Call an insurance agent about a tiny house and listen for the hesitation. Their software has no tiny house box, so your home becomes either an RV or a dwelling, and guessing wrong leaves you uninsured at claim time or overpaying every year for coverage that does not quite fit.
This guide covers both insurance paths in full: RV policies for houses on wheels, dwelling policies for foundation builds, replacement-cost versus actual-cash-value traps, liability, in-transit coverage, and off-grid equipment. You will also learn which insurers actually write tiny house policies and how DIY builders get covered.
Insuring the Uncategorizable
Tiny house insurance is confusing because insurers, like lenders, do not have a “tiny house” box. A tiny home on wheels is usually insured as an RV; a tiny house on a foundation is usually insured as a dwelling. Get the classification wrong and you are either uninsured (the policy excludes your house type) or overpaying. This guide covers both paths: what coverage you need, what it costs, and which insurers actually write it.
1. THOW Insurance: The RV Policy Path
Most tiny houses on wheels are insured under RV policies (Class A/B/C motorhome policies adapted, or more commonly, travel trailer / fifth-wheel policies). What the policy covers: the structure (comprehensive + collision, like a vehicle), personal property inside (typically $5,000–10,000 included; schedule more), and liability (if someone is hurt in or by your house). Typical cost: $800–1,500/year for a $80,000–120,000 THOW. Almost every RV insurer requires RVIA certification — the uncertified THOW is largely uninsurable in the standard market.
Critical gap: standard RV policies assume recreational use. If you live in the THOW full-time, disclose it; some insurers exclude full-time residency or require a full-timer endorsement. An undisclosed full-time claim can be denied.
2. Foundation Tiny House: The Dwelling Policy Path
A tiny house on a permanent foundation, built to code and permitted, insures as a standard dwelling under a homeowner’s (HO-3) policy: dwelling coverage (replacement cost of the structure), other structures (deck, shed), personal property (50–70% of dwelling coverage), loss of use (temporary housing if the house is uninhabitable), and liability ($100,000–300,000 standard). Cost: $600–1,200/year for a $100,000–200,000 tiny dwelling, varying wildly by state and hazard (Florida wind and California fire price very differently). The foundation path is the simplest insurance story in tiny housing.
3. What “Replacement Cost” Means for a Tiny House
Insist on replacement cost coverage (pays to rebuild at today’s prices), not actual cash value (pays depreciated value — devastating for a 5-year-old THOW). For custom and DIY builds, standard replacement-cost estimators undervalue the work; get an agreed-value endorsement (you and the insurer agree on the insured value upfront, documented with build receipts and photos). Update the agreed value every 2–3 years; construction inflation runs 4–7% annually.
4. Liability: The Overlooked Half
Liability coverage protects you when someone is hurt on your property or by your property (a guest trips on the loft stairs; your THOW’s awning detaches in wind and hits a car). Minimum sensible liability: $300,000 for a stationary tiny house; $500,000 if you host guests, run a business, or Airbnb the unit. Umbrella policies ($1M for $200–400/year) are cheap catastrophe protection. Liability claims, not structure fires, are the most common tiny house insurance events.
5. In-Transit Coverage
Moving a THOW is the highest-risk hour of its life. Verify: does your RV policy cover the house while towed by a third-party transport company (many exclude commercial towing)? Does the transport company’s cargo insurance cover your house’s full value (ask for their certificate; verify the limit)? For DIY moves, your auto policy’s trailer coverage may extend — call and confirm in writing before moving day. A $100,000 house on a $1M liability auto policy with no cargo coverage is a total-loss risk.
Transport checklist: transporter’s cargo insurance certificate (verify limit ≥ house value), your policy’s transit clause confirmed in writing, photos of the house pre-move (timestamped), and a written condition report signed at pickup and delivery.
6. Off-Grid Systems Coverage
Solar arrays, battery banks, wells, and septic systems need explicit scheduling: standard policies may cap “other structures” below the cost of a 5 kW solar + battery system ($15,000–25,000). List major off-grid components separately with values. Battery fires (lithium thermal runaway, rare but real) are a growing underwriting concern; some insurers now ask about battery chemistry and installation (UL-listed batteries in proper enclosures are insurable; DIY powerwalls in the bedroom are not).
7. Renters, Airbnb, and Business Use
Standard homeowner’s and RV policies exclude business activity. Renting the tiny house (long-term tenant or Airbnb) requires: a landlord endorsement or commercial STR policy (proper short-term rental policies run $1,500–3,000/year), and disclosure to the insurer (undisclosed rental voids coverage). If you work from the tiny house, a home-business endorsement ($100–300/year) covers business property and liability. The uninsured Airbnb tiny house is one guest injury from financial ruin.
8. DIY Builds: The Hard Case
DIY tiny houses are the hardest to insure: no manufacturer, no RVIA certification, no professional documentation. Paths that work: builder’s risk policy during construction converting to a dwelling policy (foundation builds with permits and inspections), RV policies from specialty tiny-house insurers (some accept well-documented DIY THOWs with professional electrical/plumbing sign-off), and farm/ranch policies (a DIY cabin as an “other structure” on an insured farm). Document everything (photos of framing, electrical, plumbing; receipts; inspection records) — documentation is what makes the unclassifiable insurable.
9. Shopping for Tiny House Insurance: The Process
- Start with specialty insurers: companies that explicitly advertise tiny house coverage understand the product; start there, not with your auto insurer’s call center.
- Get 3 quotes: specialty insurer, an independent agent (who shops multiple carriers), and your current insurer.
- Compare on coverage, not price: replacement cost vs ACV, full-time residency, transit, off-grid systems, and business use are the differentiators.
- Read the exclusions: the exclusions page is the policy; everything else is marketing.
- Re-shop every 2–3 years: the tiny house insurance market is evolving; new entrants undercut incumbents regularly.
10. Claims: What Actually Happens
The most common tiny house claims: water damage (roof/seal failures — often contested as “maintenance” so maintain seals and document it), wind damage (awnings, roof components), theft (tools and systems from rural sites), and transport damage. Claims discipline: document maintenance (seal inspections, photos dated), report promptly, and never admit fault or speculate on cause to the adjuster. A well-documented claim on a proper policy pays; a poorly documented claim on a wrongly classified policy does not.
Final Considerations
Tiny house insurance is a solved problem for the owner who classifies correctly (RV policy for THOWs, dwelling policy for foundation), insures to replacement cost, discloses full-time use and rentals, and documents the build. The uninsured tiny house is not saving money; it is self-insuring a six-figure asset against fire, wind, and liability with no reserves. Buy the policy before you need it.