The land closes in March. The system gets sized in April. Two phone calls in May stop the whole thing: an agent explaining that the carrier doesn’t write dwellings with no utility service, and a loan officer explaining that the appraisal came back thin on comparables and the file needs evidence of utilities that meet community standards. Neither person is being difficult. Both are reading a checklist written for a house on a pole.
The checklists are short and almost entirely knowable in advance. A carrier is asking about six things; a lender selling the loan onward is asking about four.
Off-grid builds trip several at once, which is why the answer arrives as a flat no rather than a list of conditions — and why the same file, resubmitted with the right documents in the right order, often comes back approved.
Below is what each side looks at, what clears it, and the wording to ask for. Rules move between carriers, lenders and countries, so treat every band here as the question to put in writing rather than the answer for your file.
Key number
10%
The share of the dwelling limit a standard homeowner policy typically allots to everything that isn’t the house.
The Insurance Information Institute’s homeowners handbook says most policies cover detached structures such as a garage, tool shed or gazebo “generally for about 10 percent of the amount of insurance you have on the structure of the house.” On a $300,000 dwelling limit that is $30,000 covering the ground-mount array, the racking, the battery shed and the pumphouse combined.
Key number
1 year
How often a solid-fuel flue has to be swept under the departmental sanitary regulations governing wood heat in France — and how recent the certificate needs to be before a fire claim on a wood-heated house turns into an argument about maintenance. Only a mechanical sweep by a professional produces the certificate an insurer accepts; a chemical log does not.
Why Standard Home Insurance Balks at an Off-Grid Build
Underwriting a house is a scoring exercise, and almost every input is a fact about the building rather than an opinion about your lifestyle. An off-grid property changes several inputs at once, and a file with four flags on it gets declined faster than one with a single fixable flag.
| What the carrier is actually asking | Why an off-grid build trips it | What clears it |
|---|---|---|
| Is the electrical installation permitted, inspected and signed off? | Owner-built systems often have no inspection record at all | The final electrical sign-off for the whole system, in writing |
| Is the dwelling finished and legally habitable? | Off-grid builds run in phases, sometimes across several winters | Certificate of occupancy or the local equivalent — and builder’s risk cover until you have it |
| What heats it, and can it run unattended? | Wood or pellet as the only heat source | Listed appliance, professional install, flue to standard, spark arrestor, dated inspection record |
| What is it built of? | Yurt, straw bale, earthbag, cob, cordwood, owner-milled timber | Evidence the method is a recognized construction type in your jurisdiction |
| How fast can the fire service get here, and with what water? | Rural parcels sit outside hydrant range and often outside a service boundary | Nothing you can change — but you can price it before you buy |
| Can a fire truck physically reach the house? | Unmaintained two-track, no turnaround, seasonal access | A road built to the local emergency-access standard, plus a recorded easement |
The heat-source question is the one people underestimate. A stove is a red flag because its safety depends almost entirely on how it was installed and how often the flue is cleaned, and a carrier has no way to verify either unless you hand over the paperwork. Use an installer whose certificate you can photograph, and keep every sweep receipt.
Alternative construction surprises people more, because it isn’t really about durability.
The US model residential code carries adoptable appendices for exactly these methods — strawbale construction and cob (monolithic adobe) among them in the 2024 edition, alongside hemp-lime and 3D-printed construction, with tiny houses in an appendix of their own.
But as the International Code Council puts it, “the provisions contained in this appendix are not mandatory unless specifically referenced in the adopting ordinance.” If your county never adopted the appendix, your straw-bale house isn’t a dwelling built to a recognized standard; it is an unclassified structure.
That distinction is invisible while you build and decisive when you insure.
Distance to help is the input nobody can negotiate.
Most US carriers rate fire risk off the Public Protection Classification that Verisk’s ISO assigns to a community, and the Texas Department of Insurance sets out the geometry plainly: the first number in a split classification applies to properties “within five road miles of a fire station and within 1,000 feet of a creditable water supply,” the second to properties “within five road miles of a fire station but more than 1,000 feet from a creditable water supply,” and “any building more than five road miles from a fire station or outside the boundary of a city or volunteer fire department service area has a PPC score of 10.” Class 10 is where a great many off-grid parcels land, and it is the largest single premium input on the file.
Ask the county emergency-services office for the responding department and the road-mile figure before you make an offer. It is a free call, and the answer sometimes moves a whole class between two parcels a mile apart.
Wildfire is the second immovable input, and where the admitted market retreats the state pool absorbs the risk.
The California FAIR Plan told the Assembly Insurance Committee on 28 January 2026 that it held 668,609 policies in force as of December 2025, up 146% since September 2022, with total exposure of $724 billion.
Its residential product is a dwelling fire policy with a $3 million limit rather than a homeowners policy, which is why FAIR Plan households typically pair it with a difference-in-conditions policy covering liability, theft and water damage.
If your parcel sits in mapped high hazard, find out which state pool covers it and what the wrap-around costs before the mitigation work becomes urgent.
The other landing place is the surplus lines market. The NAIC describes non-admitted insurers as covering “risks not available within the admitted market,” and reports the segment grew 12.2% in 2024 to $131 billion, around 12% of all US property and casualty premium.
One line matters more than the growth: state guaranty-fund protection is “a consumer protection within the admitted market, but not available to the surplus lines market.” A surplus lines policy can be the right answer for an unusual house.
It also means the carrier’s own financial strength rating is the only backstop you have.
Free calculator
Load Calculator
Tick your appliances and get daily kWh, peak and surge watts, and a plain verdict. Live, free, no sign-up — and the result becomes a brief you can buy against.
What Actually Gets a Policy Issued
Every flag has a document that answers it, and all of them are cheaper to collect while the trades are still on site than to chase two years later. Treat this as the underwriting file you assemble as you build.
- Permit numbers and final inspection sign-offs — building, electrical, well and septic, each as a scanned certificate rather than a receipt.
- Named installer certification for the electrical system — array, charge controllers, inverter and battery, signed by whoever is licensed to sign it where you are.
- Listing labels for the battery — in the US the National Electrical Code’s energy-storage article requires the system or its components to be listed, and the fire-code standard covering the installation is NFPA 855. Photograph the data plate showing the UL 9540 listing before the cabinet goes on the wall.
- Stove documentation — appliance listing, the flue system it was installed with, clearances, and a spark arrestor. The residential code’s spark-arrestor section calls for mesh whose openings pass nothing larger than a half-inch sphere and block nothing smaller than three-eighths of an inch.
- An annual inspection record for anything that burns — NFPA 211 is the US consensus standard for chimneys and solid-fuel appliances, and annual inspection is its baseline expectation. The receipt is what turns “we maintain it” into evidence.
- A documented water source — well completion report and yield, or the storage volume and treatment train if you are on catchment.
- Defensible space, photographed and dated — before and after, every season.
California sets the defensible-space reference standard even outside California.
Public Resources Code 4291, last amended in October 2025, requires an owner in a state responsibility area to “maintain defensible space of 100 feet from each side and from the front and rear of the structure, but not beyond the property line,” with more intensive fuel reduction between 5 and 30 feet, an ember-resistant zone within 5 feet of the structure, roofs kept clear of vegetative debris, and any part of a tree removed that “extends within 10 feet of the outlet of a chimney or stovepipe.” Carriers in fire country increasingly ask for those exact items, and dated photographs are what settle the question at renewal.
Permits run through all of it; the US permitting guide covers which office issues what, in what order.
Read the same problem through European property insurance and the vocabulary changes while the logic does not. Cover on a rural house turns on two attestations: that the electrical installation conforms, and that anything burning solid fuel was signed off and is maintained.
A private low-voltage installation is normally expected to carry a conformity document issued by a registered installer before it counts as a compliant installation at all.
In Spain that is the certificado de instalación eléctrica — the boletín — issued by an installer on the region’s industrial register and evidencing compliance with the low-voltage regulation, Real Decreto 842/2002.
In Italy the equivalent is the dichiarazione di conformità under Ministerial Decree 37/2008, released by the installing firm at the end of the work.
Worth asking early: those rules were written around installations serving a building on the network, and for a genuinely stand-alone system installers differ on how much of it the declaration covers. Get that in writing before the invoice.
On the heating side, Germany makes the sequence explicit — a new stove or boiler may not be put into service until the district chimney sweep has certified the flue as suitable and safe to use, and the same office runs the periodic inspection afterwards.
France runs it as a maintenance duty instead: the annual mechanical sweep and its certificate are what an insurer asks for when a wood-heated house has a fire. The practical rule is identical to the US one.
The appliance has to be signed off by the person entitled to sign it, and the sweep record has to be current. Country-by-country paperwork for the power system is in the Europe permits and incentives guide.
How the Array and the Battery Bank Are Actually Covered
Two questions decide whether a claim on the power system is worth having. Which coverage part does the equipment sit in, and is it paid at replacement cost or depreciated value? Most people assume “the house, at replacement cost” and never check.
| The equipment | Where it usually lands | What that means |
|---|---|---|
| Roof-mounted array on the dwelling | Coverage A — dwelling | Inside the main limit; replacement cost if the dwelling limit passes the 80% test |
| Ground-mount array, battery shed, pumphouse | Coverage B — other structures | Typically around 10% of the dwelling limit for all of them combined |
| Battery inside the house or attached garage | Coverage A, usually | Confirm in writing; a wall unit in a detached shed is a different answer |
| Portable power station, spare panels, generator on a cart | Coverage C — personal property | Settled at actual cash value on the unendorsed form |
| Racking, mounts, outdoor equipment | Often treated as neither dwelling nor building | The standard form settles “structures that are not buildings” at actual cash value |
That last row is the expensive one, and it comes straight off the standard ISO homeowners form.
Buildings under the dwelling and other-structures parts are settled “at replacement cost without deduction for depreciation” — but only where the amount of insurance on the damaged building “is 80% or more of the full replacement cost of the building immediately before the loss.” Under that threshold the payout drops to the greater of actual cash value or a proportional share.
A separate list on the same form — personal property, “outdoor antennas and outdoor equipment, whether or not attached to buildings,” and “structures that are not buildings” — is settled “at actual cash value at the time of loss.”
So the question to put in writing before you sign is one sentence: which coverage part does my ground-mounted array sit in, what is the limit on that part, and is it settled at replacement cost or actual cash value? Then ask what it costs to raise the other-structures limit and endorse the array and battery onto replacement cost.
Ask separately what deductible applies to wind and hail — in hail country that is frequently a percentage of the dwelling limit rather than a flat amount, which on a ground mount can consume the whole claim.
Two more gaps worth naming.
Lightning and surge on a stand-alone system have nothing utility-side in front of them, and a strike that takes charge controllers, inverter and battery management boards at once is a single event with a five-figure parts list; ask whether the policy covers lightning and surge damage without a separate sublimit, and price a lightning-protection installation against it.
Then ask directly whether the policy carries any exclusion or sublimit on lithium battery fire or thermal runaway.
Carriers are actively rewriting that language, two policies with the same name give different answers, and a listed system installed to the fire code is your strongest argument for having the exclusion removed.
European household policies split the same problem differently — usually a building section, a contents section, and a separate schedule for fixed technical installations — and the practical questions stay the same three.
Is the photovoltaic installation named in the building section or only in contents, which changes both limit and deductible? Is it valued at reinstatement or at depreciated value once past a stated age?
Is there a sublimit or exclusion for the battery specifically, and for lightning and overvoltage damage to the electronics? Get each answer in writing with the conformity certificate attached.
On a rural property the storm and hail wordings deserve the same reading as the fire section, because hail is the peril most likely to take a whole ground-mounted array in one afternoon.
Insuring the Build Itself
A homeowner policy insures a finished, occupied home.
During construction the cover that fits is builder’s risk, also sold as course-of-construction insurance: property cover on the structure, materials and fixtures while work is underway, written for a fixed term and typically ending at completion or occupancy.
It matters more on an off-grid site for a boring reason — those builds sit unattended for long stretches with expensive, portable, resaleable hardware on them.
Three things to settle at the start. Whether stored materials are covered before installation, because the pallet of modules sitting in a container for six weeks is the classic uninsured loss. Who is named as insured, because an owner-built project has no general contractor carrying the policy. And when builder’s risk ends and the homeowner policy begins, because a gap between the two is one you only discover afterwards.
Liability on raw land before the house exists is the piece most buyers assume they don’t have. Often they do.
The standard homeowners form defines an insured location to include “vacant land, other than farm land, owned by or rented to an insured” and “land owned by or rented to an insured on which a one, two, three or four family dwelling is being built as a residence for an insured.” If you already own a home with a policy on it, your personal liability may already follow you to the parcel and the build.
Check your own declarations, because that “other than farm land” carve-out does real work on an agricultural parcel — and with no existing policy, standalone vacant-land liability is the cheapest paperwork in this guide.
Whether the road is a recorded easement rather than a neighbor’s goodwill is a title question, a lending question and an emergency-access question at once. It gets full treatment in the 15-point land checklist.
Why a Conventional Mortgage Struggles
Lending splits cleanly in two. A loan the bank intends to sell is written to somebody else’s rulebook, and that rulebook was drafted around utility service. A loan the bank intends to keep is written to its own credit judgement. Almost every off-grid mortgage that exists was written by a lender in the second category, and working out which kind you are talking to in the first five minutes saves weeks.
The appraisal fails first, independently of everything else.
Fannie Mae’s Selling Guide requires that “a minimum of three closed comparables must be reported in the sales comparison approach.” An owner-built off-grid house on 40 acres in a county with two similar sales in a decade puts the appraiser exactly where the guide anticipates for rural work — reaching for properties that are not truly comparable, at considerable distance, with written justification.
That appraisal can come in low, and a low appraisal shrinks the loan regardless of your credit.
Then the property rules.
The Selling Guide’s general property eligibility topic requires a property to be “served by utilities that meet community standards,” “readily accessible by roads that meet local standards” and “suitable for year-round use.” The appraisal-site topic is more specific: “if public sewer and/or water facilities, those that are supplied and regulated by the local government, are not available, community or private well and septic facilities must be available and utilized by the subject property,” and those facilities must sit on the subject site unless there is “an adequate, legally binding agreement for access and maintenance.” The property “should front on a publicly dedicated and maintained street,” and a private road needs “an adequate, legally enforceable agreement or covenant for maintenance.” Nothing there forbids off-grid power.
What it forbids is a house with no septic, no potable water on site, or a road nobody is legally bound to maintain.
The government programs add a heat test and a water test.
HUD Handbook 4000.1 requires the appraiser to report a deficiency where the permanently installed heating system fails to “automatically heat the living areas of the house to a minimum of 50 degrees Fahrenheit,” to “rely upon a fuel source that is readily obtainable within the subject’s geographic area,” to “have market acceptance within the subject’s marketplace” and to “operate without human intervention for extended periods of time” — the clause a hand-loaded stove cannot satisfy alone.
The same handbook requires the appraiser to report water “supplied by dug wells, cisterns or holding tanks used in conjunction with water purchased and hauled to the site,” and that such a supply “may violate” the minimum property requirements.
VA’s Chapter 12 requires “safe and adequate pedestrian or vehicular access from a public or private street with an all-weather surface,” heating “permanently installed” and holding at least 50 degrees Fahrenheit “in areas with plumbing,” and a written borrower acknowledgement where water comes from “dug wells, cisterns, or holding tanks” or “a rainwater catchment system.” USDA’s guaranteed-loan handbook requires roads “hard surfaced or all-weather surfaced” with maintenance arrangements in place, rules that “water systems that require continuous or repetitive treatment to be safe bacterially or chemically are not acceptable,” and excludes income-producing land outright — a real constraint on acreage with any agricultural use attached.
One more catches solar buyers specifically. VA instructs appraisers to give no value to leased mechanical systems and equipment, naming “fuel or propane storage tanks, solar or wind systems (including power purchase agreements), and other alternative energy equipment,” because leased items “are not suitable security for a loan.” A leased array contributes nothing to value, and the lease may encumber title.
European lending hits the same wall from the valuation side.
A mortgage valuation is a comparison exercise against recent local sales, and a rural property with no network connection is exactly the case where the valuer has no close comparables and marks the figure down for marketability rather than for anything wrong with the building.
Banks also read habitability off the paperwork: whether the dwelling is registered as a dwelling, whether completion and occupancy permissions exist, and whether the technical installations carry their conformity certificates.
A finished house with missing certificates is valued as an unfinished house.
The route out looks like the US one. Local and regional banks, cooperative banks and credit unions that keep the loan on their own books decide case by case, and they are the ones to approach with a full document pack rather than a summary. Ask three questions at the first meeting: does the bank lend on a property with no network connection at all, which valuer will it instruct, and what does it want to see before instructing.
The Paths That Do Work
Nearly every off-grid build gets financed through one of six routes, sometimes two stacked. The differences that matter are the down payment, the term, and what happens if the build runs long.
| Route | How it’s structured | The catch |
|---|---|---|
| Cash, built in phases | Land outright, then shell, then systems, as money allows | Slowest, and every phase re-mobilizes trades at full price |
| Land loan, then construction-to-permanent | Lot loan first, refinanced into a construction loan that converts at completion | Two sets of closing costs, and a hard deadline on completion |
| Portfolio lender — community bank or credit union | Held on the lender’s own books, underwritten on judgement | Local footprint only, and pricing above the national benchmark |
| Agricultural and rural cooperative lenders | Long-term rural real-estate lending outside the conventional secondary market | Eligibility rules of their own; ask before you assume you qualify |
| Owner financing from the seller | Seller holds the note; you pay them directly | Balloon dates, forfeiture clauses, and title that may not transfer until the end |
| Equipment or solar loan for the power system only | Unsecured or equipment-secured, alongside cash for the build | The dealer fee is inside the price you were quoted |
Two of those rows have US mechanics worth knowing before you pick.
On construction-to-permanent, Fannie Mae’s single-closing rules say loans combining construction and permanent financing “cannot be purchased by Fannie Mae until the construction is completed and the terms of the construction loan have converted to the permanent financing,” and that the construction period “may have no single period of more than 12 months and the total period may not exceed 18 months.” Design the build schedule around that 18-month ceiling, because a project carrying a well, a septic system, a road and a power system is exactly the kind that slips.
On rural cooperative lending, the Farm Credit System is a network of four banks and 55 associations covering all 50 states and Puerto Rico, and its long-term lenders are explicitly authorized to make rural home loans.
The eligibility rules are narrow enough to read before you call: federal regulation defines a rural home as “a single-family moderately priced dwelling located in a rural area that will be owned and occupied as the rural homeowner’s principal residence,” with a rural area meaning “open country within a State or the Commonwealth of Puerto Rico, which may include a town or village that has a population of not more than 2,500 persons,” and caps rural home lending at 15% of an association’s outstanding loan volume.
Inside those lines this is portfolio lending on rural property by institutions that do nothing else.
Owner financing is where the traps live, and the federal rules map them usefully.
Regulation Z excludes a seller from the loan-originator definition on “three or fewer properties in any 12-month period” only where the financing is “fully amortizing,” the seller “determines in good faith the consumer has a reasonable ability to repay,” and the rate is fixed or adjustable only “after five or more years, subject to reasonable annual and lifetime limitations.” A natural person selling “only one property in any 12-month period” gets a narrower version that still bars negative amortization.
Read that as the shape of a clean seller-financed deal, and treat a five-year balloon or an interest-only structure as the warning it is.
Then ask what the federal rules don’t answer: does the deed transfer at closing with a mortgage or deed of trust recorded against it, or is this a contract for deed where title stays with the seller and a missed payment can forfeit everything you have paid?
That distinction is the difference between a mortgage and a very expensive rental.
Europe has one instrument the US mostly lacks: subsidized renovation and heating loans, several of which finance the same hardware an off-grid build needs, none of them aimed at off-grid living specifically.
Three that were live when this was written, with their dates named because that is the part that expires.
France’s éco-prêt à taux zéro lends interest-free against energy renovation work on a main residence at least two years old, over terms up to 20 years for a whole-house renovation, with the complementary loan available through 31 December 2027.
Germany’s KfW supplementary loan for individual measures, programs 358 and 359, runs to terms of up to 35 years with interest fixed for up to ten, and is only available where a grant approval was issued first and is less than twelve months old.
Ireland’s Home Energy Upgrade Loan Scheme runs through the Strategic Banking Corporation of Ireland with a guarantee from the European Investment Fund and the European Investment Bank: unsecured, no personal guarantee, terms of one to ten years, priced well below standard unsecured lending, available only alongside a grant-funded upgrade, and open for drawdown “up to 31 December 2026 (unless the scheme is fully allocated before then).” Check current terms with the scheme before you build a budget on any of them; every one has been amended more than once.
Size it first
Solar Sizing Calculator
Daily kWh in, array kW, panel count, battery bank and inverter size out — the number every carrier and lender conversation starts from. Borrow against your own figures, not a guess.
Rates, Terms, and What Borrowing Does to Payback
Rates move weekly, so the useful thing is the shape: which route sits close to the conventional mortgage benchmark, and which sits well above it.
| Route | Typical down payment | Term | Where the rate sits |
|---|---|---|---|
| Conventional mortgage on a conforming house | 3–20% | 15–30 yr | The benchmark everything else is priced against |
| Raw land loan | Commonly 35–50% | 5–15 yr | Well above the mortgage benchmark |
| Improved lot with utilities and road access | Commonly 20–25% | 5–20 yr | Above the benchmark, below raw land |
| Construction-to-permanent | 10–25% | Converts to 15–30 yr | Near the benchmark once converted |
| Unsecured solar or equipment loan | Often none | 7–25 yr | Rate near the benchmark, true cost above it |
| Line of credit against an existing home | Equity, not cash | Draw then repay | Above the benchmark and variable |
For the US anchors as this was written: Freddie Mac’s Primary Mortgage Market Survey put the 30-year fixed at 6.65% and the 15-year at 5.95% on 20 August 2026, and Bankrate’s survey of large home-equity lenders put the national average HELOC rate at 7.31% on 19 August 2026.
Land-lender and land-brokerage guides published through 2026 put raw land roughly 1.5 to 3 percentage points above the mortgage benchmark, with 35–50% down on raw acreage and 20–25% on an improved lot — ranges wide enough that only a real quote from a real lender means anything.
Ask every land lender the same three questions: the down payment on this parcel, whether the note balloons, and whether they will roll it into construction financing later.
The unsecured solar loan deserves its own warning, because the arithmetic is counterintuitive. EnergySage’s own marketplace data has the median quoted solar loan rate at 7.24% in the second half of 2024, down from 7.49% in the first half, with the most frequently quoted loan running 8.49% over a 20-year term and 60% of quotes at 6% or higher. Those rates look competitive against a mortgage. The cost lives somewhere else.
When an installer brings a financing partner to the table, the lender pays the installer a dealer fee out of the loan, and that fee is priced into the quote you were handed.
EnergySage puts the average dealer fee across all quotes at 12% in the second half of 2024, and defines a low-fee loan as one at 3% or less.
What makes that matter more than the interest rate is the shape of the money: dealer fees are, in EnergySage’s words, “typically front-loaded, nonrefundable, and can’t be offset through refinancing or early repayment like interest can,” so “a loan with a higher interest rate but lower fees may actually be cheaper than one with a much lower interest rate.” Ask every installer for a cash price and a financed price on the same specification, in writing, and ask what the dealer fee is as a percentage of the loan.
Then run the consequence. An off-grid system already has a payback measured in years, and financing extends it by whatever interest and fees add to the total.
The payback guide lays out the crossover math against a grid extension or a generator, and the honest version is that borrowing pushes the crossover year later even when the monthly payment is comfortable.
If the system is what makes the property buildable at all, that is a fair trade; if it is a discretionary upgrade, the financed total is the number to judge it on.
With a hardware quote in hand, the hidden-costs guide covers what the quote leaves out, and the 2026 cost report gives the line-item breakdown to test it against.
The Questions to Ask, in Order
Nine questions, all free, all answerable before your money is committed.
- Which fire department responds, and how far is it by road? The county or municipal emergency-services office knows; ask for road miles, not straight-line distance.
- Is this parcel in a mapped high wildfire or flood hazard area? Public maps, free, and the answer changes both premium and availability.
- Is the access road recorded, and who is legally bound to maintain it? The title commitment answers the first half; the county road office the second.
- Will you write a policy on an owner-built dwelling with a stand-alone power system and wood heat? Ask three carriers and one independent broker before you buy the land, describing the build honestly.
- Which coverage part covers the array and the battery, at what limit, and at replacement cost or actual cash value? In writing, before you sign the policy.
- What deductible applies to wind and hail, and is it a percentage or a flat amount? A percentage deductible on a ground-mount hail claim can leave nothing behind.
- Is there any exclusion or sublimit for lithium battery fire, or for lightning and surge damage to electronics? Ask it as two questions; the answers are often different.
- Do you keep this loan on your own books or sell it? One question tells you which rulebook you are up against.
- What documents do you need before you instruct the appraisal? Get the list and collect it before you apply, rather than after the first decline.
Still deciding where to buy rather than what to build? The land and siting hub starts a step earlier, and the land mistakes guide catalogs what goes wrong when these questions get asked in the wrong order. If you want the load figure first, the load calculator produces it in a few minutes.
Insurance and Financing FAQ
Can you insure an off-grid house at all?
Usually yes, but often not with the first carrier you call and sometimes not in the admitted market.
The things that decide it are checkable before you build: whether the structure is permitted and signed off, what heats it, what it is built of, how far the fire service is, and whether the electrical and the stove were installed and certified by someone licensed.
A house that fails several at once frequently ends up with a non-admitted surplus lines carrier, which the NAIC notes is not backed by state guaranty funds, so the carrier’s own financial strength matters more than usual.
Will a bank give a mortgage on an off-grid house?
A loan sold into the US secondary market is the hard case.
Fannie Mae’s Selling Guide requires that a property be served by utilities that meet community standards and be readily accessible by roads that meet local standards, and where public water or sewer is unavailable it requires private well and septic facilities that are on the site or covered by a legally binding access agreement.
Lenders who keep loans on their own books — community banks, credit unions, Farm Credit System associations — are not bound by that wording and are where most off-grid mortgages actually get written.
Is a ground-mounted solar array covered by home insurance?
Ask in writing which coverage part it sits in. A roof array attached to the dwelling is normally part of the dwelling limit.
A ground mount set apart from the house falls under other structures, which the Insurance Information Institute puts at generally about 10 percent of the amount of insurance you have on the structure of the house.
The standard ISO homeowners form also settles structures that are not buildings, and outdoor equipment whether or not attached to buildings, at actual cash value rather than replacement cost, so a depreciated payout on a ten-year-old array is a real possibility without an endorsement.
Does a wood stove as the only heat source stop a loan or a policy?
For FHA it is the specific problem.
HUD Handbook 4000.1 requires the appraiser to flag a deficiency if the permanently installed heating system does not automatically heat the living areas to at least 50 degrees Fahrenheit and does not operate without human intervention for extended periods of time — a stove you load by hand fails the second test, so a conventional backup heat source is what clears it.
VA’s rule is that heating must be permanently installed and maintain at least 50 degrees Fahrenheit in areas with plumbing. Carriers care less about the loan test and more about installation: a listed appliance, a flue built to standard, a spark arrestor, and an inspection record.
Is a solar loan cheaper than putting the system in a mortgage?
The headline rate says yes and the total cost often says no. EnergySage’s marketplace data put the median quoted solar loan rate at 7.24% in the second half of 2024, close to the 6.65% Freddie Mac reported for the 30-year fixed mortgage on 20 August 2026.
The difference is the dealer fee, which averaged 12% of the loan across all quotes in that same period and is front-loaded and nonrefundable, so a low-rate financed quote can carry a materially higher installed cost than a cash purchase of identical hardware.
Ask for both prices on the same specification.
None of this is a reason to give up on an off-grid build. It is a reason to collect the paperwork while the trades are still on site, and to find out which carrier and which lender will say yes before the earnest money goes hard.