To buy a tiny house, start by deciding whether it will sit on a permanent foundation or on wheels, because that one choice controls your financing options, where you can legally place it, how it’s taxed, and what insurance you can get. From there the process runs in a predictable order: line up a loan that matches the classification, confirm the site is zoned for the home, collect the right certifications and documents, close the purchase, and arrange utilities before delivery. Most tiny homes cost somewhere between $30,000 and $100,000 depending on size, finishes, and that foundation-or-wheels question.
Decide Between a Foundation and Wheels First
A tiny house built on a permanent foundation is generally regulated like any other house under local building codes. The International Residential Code’s Appendix Q, first included in the 2018 edition, specifically addresses tiny houses of 400 square feet or less on permanent foundations, setting standards for ceiling heights, loft dimensions, and emergency exits that differ from those for larger homes.1International Code Council. Appendix Q Tiny Houses – 2018 International Residential Code (IRC) A foundation-built tiny home that meets code is treated as a permanent dwelling. That opens the door to traditional property ownership and the obligations that come with it, including property taxes and full building inspections.
A tiny house on wheels, often called a THOW, follows a different legal path. Most jurisdictions classify these as recreational vehicles or personal property rather than permanent residences. You gain mobility and may avoid property taxes on the structure itself, but you lose access to conventional mortgage financing and face stricter rules about how long you can occupy the unit in one location. Buyers who plan to live in a tiny house full-time usually discover that this classification question matters more than the floor plan.
How to Finance a Tiny House
The biggest financing hurdle is that most traditional mortgage lenders won’t touch a tiny house. Fannie Mae requires manufactured homes to be at least 600 square feet, and the FHA sets a floor of 400 square feet along with a HUD certification label. Those requirements exclude the vast majority of tiny homes from government-backed loans. If your tiny house sits on a foundation and exceeds 400 square feet, an FHA loan is theoretically possible, but finding a lender willing to underwrite one for a structure this small remains difficult in practice.
That leaves three main routes.
Personal Loans
Personal loans are the most accessible option because they don’t require the tiny house as collateral. You’ll generally need a credit score of at least 680 to get competitive rates, and even then, expect interest rates in the range of 8% to 15%. Terms typically run five to seven years, which means higher monthly payments than you’d see on a 30-year home loan. The upside is speed: approval is usually faster, and the lender doesn’t need to appraise the tiny house or verify its classification.
RV Loans
If your tiny house on wheels carries certification from the Recreation Vehicle Industry Association (RVIA), it can qualify for an RV loan. These loans offer longer terms and lower rates than personal loans, but lenders typically expect a down payment of 10% to 20% and will scrutinize your debt-to-income ratio. The home must be RVIA-certified before the lender will consider it, which eliminates many custom-built tiny houses that were constructed without going through the certification process.
Chattel Loans
Chattel loans are designed for movable property and tend to be the best fit for tiny houses on wheels that lack RVIA certification. Specialized lenders in this space understand the tiny house market, though they often set minimum loan amounts around $25,000. Terms are usually longer than a personal loan but shorter than a traditional mortgage, and interest rates fall somewhere in between. Expect to provide recent tax returns, pay stubs, and bank statements covering the previous few months.
Confirm the Site Is Legal Before You Buy
Zoning is where tiny house plans most often collide with reality. The rules governing where you can place a tiny house vary dramatically by jurisdiction, and a home that’s perfectly legal in one county may be flatly prohibited in the next.
Foundation-built tiny houses that comply with Appendix Q of the IRC are treated as permanent dwellings in jurisdictions that have adopted that appendix. The problem is that adoption is optional, and many local governments haven’t adopted it. Even where they have, minimum square footage requirements in the local zoning code can create a separate barrier. Some municipalities require primary residences to be at least 1,000 square feet, which effectively bans most tiny houses from being the sole structure on a residential lot.
Tiny houses on wheels face a different set of obstacles. Because they’re typically classified as recreational vehicles, they fall under camping and occupancy ordinances that limit how long you can live in one at a fixed location. Some jurisdictions cap continuous occupancy at 30 days, others at 180 days, and a few don’t allow full-time RV living at all outside of designated parks.
The most promising legal path for many buyers is the accessory dwelling unit (ADU) route. A growing number of jurisdictions allow tiny houses, on foundations or wheels, as ADUs on lots that already have a primary residence. ADU regulations typically specify maximum size, height limits, and minimum setback distances from property lines. The ADU option works well if you have family willing to share a lot or if you buy land with an existing home on it.
Before committing to a location, contact the local zoning office directly and ask three questions: whether tiny houses are permitted as primary or secondary dwellings, what minimum square footage applies, and whether your classification triggers any special occupancy restrictions. Get the answers in writing. That record protects you if enforcement interpretations change later.
Documents and Certifications You’ll Need
Before money changes hands, you need paperwork that proves the home exists legally and was built safely. Missing even one of these can stall financing, insurance, or registration.
- Manufacturer’s Certificate of Origin (MCO). This establishes the home’s chain of ownership from the factory. Without it, titling the home with your state’s motor vehicle or housing agency becomes far more complicated.
- RVIA or NOAH certification. Insurance providers increasingly require one of these before they’ll write a policy. RVIA certification confirms the home meets recreational vehicle safety standards; certification from the National Organization of Alternative Housing (NOAH) verifies that the builder followed safety standards for wiring, plumbing, and structural integrity. Getting certified after construction is possible but significantly more expensive than having the builder include it from the start.2NOAH RDI. Insuring Your Tiny Home
- Bill of sale with identification number. The bill of sale should include the VIN for a wheeled unit or a unique serial number for a foundation-built home. It’s your legal receipt and is required for registration.
- Floor plans and engineering stamps. If you’re placing a tiny house on a permanent foundation, your local building department will likely require stamped engineering drawings before issuing permits.
For tiny houses on wheels, also get the builder’s specification sheet showing total weight and dimensions. Most THOWs weigh between 10,000 and 15,000 pounds, which dictates the towing vehicle. Width is the critical transport dimension: federal regulations cap vehicle width at 102 inches (8.5 feet) on the National Network of highways, and anything wider triggers oversized load permit requirements. There is no federal height limit; states set their own, with 13.5 feet common but not universal. Confirm your state’s height restriction before delivery.
Budgeting for Taxes and Insurance
How your tiny house is taxed depends almost entirely on its classification. A tiny home on a permanent foundation is typically assessed as real property, meaning you’ll owe annual property taxes. A tiny house on wheels is generally classified as personal property, which may exempt it from real estate taxes on the structure, though you could still owe property taxes on the land and some jurisdictions assess personal property taxes on movable units separately.
Sales or use tax applies to the purchase itself in most states, with combined state and local rates typically ranging from about 4% to over 12% depending on where you buy and where the home is delivered. On a $70,000 tiny house, that’s potentially several thousand dollars buyers frequently overlook when budgeting.
On the federal side, if your tiny house qualifies as your main home, meaning you own it and live in it as your primary residence, you may be eligible for the same tax benefits available to owners of conventional houses. The IRS considers mobile homes eligible as a main home for purposes of the capital gains exclusion when you sell. To qualify for the full exclusion of up to $250,000 in gain ($500,000 for married couples filing jointly), you must have owned and used the home as your primary residence for at least two of the five years before the sale.3Internal Revenue Service. Selling Your Home Mortgage interest deductions may also apply if you have a qualifying loan secured by the home.
Insurance is one area where certification pays for itself quickly. Most insurers require RVIA or NOAH certification before they’ll issue a policy on a tiny house, and uncertified homes are often uninsurable through standard channels.2NOAH RDI. Insuring Your Tiny Home A tiny house on a permanent foundation can sometimes be covered under a standard homeowner’s policy or a manufactured home policy, which typically includes the structure, attached features like decks and porches, personal belongings, and liability. A THOW is more commonly insured through an RV policy or a specialty tiny house policy. Flood and earthquake coverage is usually available as an add-on but isn’t included by default.
Transport insurance is a separate concern. Federal rules require interstate movers to offer liability protection, but the baseline level, called released value protection, covers only 60 cents per pound per item.4FMCSA. Liability and Protection On a 12,000-pound tiny house, that works out to just $7,200, a fraction of the home’s value. Full value protection or a separate transit policy is worth the added cost.
The Purchase and Delivery Sequence
With financing approved and a legal site confirmed, the actual purchase combines elements of buying a car, hiring a contractor, and closing on a house.
The purchase contract between you and the builder should spell out the total price, a payment schedule tied to construction milestones, the expected delivery date, and detailed specifications for materials, finishes, and systems. Many buyers use an escrow service to hold funds until the home passes inspection, which is one of the best protections against builders who take full payment upfront and then cut corners. Wire transfers are standard for large payments; triple-check routing information before sending anything, because wire fraud targeting real estate transactions remains common.
Delivery requires coordination with a professional transport company. Before the truck arrives, your site needs to be accessible and prepped, either with a finished foundation for permanent placement or level, compacted ground for a THOW. Verify that access roads can handle the width and turning radius of the loaded trailer.
When the home arrives, conduct a thorough walk-through before signing anything that acknowledges delivery in acceptable condition. Check plumbing connections, electrical panels, appliances, windows, and any custom features against your contract specifications. Look for transit damage. Cracked trim, shifted cabinetry, and loose plumbing fittings are the most common issues. An independent professional inspection on a structure under 1,000 square feet typically runs $200 to $250 and is money well spent.
The transaction closes when the title or Certificate of Origin transfers to your name. Keep copies of every signed document: the purchase contract, bill of sale, final inspection report, proof of payment, and warranty paperwork. You’ll need these for registration, insurance claims, tax filings, and any future resale.
Arrange Utilities Before the Home Arrives
A tiny house needs water, power, and waste disposal regardless of classification. Settling these before delivery prevents owning a home you can’t legally live in yet.
Most tiny houses are wired for either a 30-amp or 50-amp hookup. A 30-amp system handles basic lighting, a refrigerator, and small appliances, but running an air conditioner or electric heater alongside other loads usually requires 50-amp service. Off-grid solar is an option, but sizing matters. An undersized array in a cloudy climate leaves you without power when you need it most.
Waste disposal is regulated almost entirely at the state and local level. The EPA does not regulate individual onsite septic systems; that authority belongs to state, tribal, and local governments.5U.S. Environmental Protection Agency. Septic Systems Reports, Regulations, Guidance, and Manuals Options range from connecting to a municipal sewer line to installing a small septic system or using a composting toilet. Composting toilets are popular in the tiny house community because they eliminate the need for a sewer connection, but not all jurisdictions accept them as a legal primary waste system. Check local health department rules before committing.
Water follows a similar pattern: connect to municipal water if available, or install a well or rainwater collection system in a rural area. Each option carries its own permitting requirements, and rainwater harvesting is restricted or regulated in several states.