Key takeaways
- Your home type decides your loan options. RV-certified homes on wheels and park models qualify for RV loans; ADUs and foundation homes open up home equity, construction loans and mortgages.
- Certification matters. Uncertified homes on wheels are often limited to personal loans or cash.
- Home equity is often cheapest for ADUs if you already own a house — but Texas has special home equity rules.
- Rates change constantly. Compare at least three lenders and check current offers.
Why tiny home financing is different
Traditional mortgages are designed for real estate: a house permanently attached to land that a lender can appraise against comparable sales. Many tiny homes do not fit that box. A tiny house on wheels is legally a vehicle. A park model is usually personal property. Even a foundation tiny home can be hard to appraise when there are few similar sales nearby, and some lenders set minimum loan amounts or square footage.
So the first step is knowing what you are building. Our ADU vs park model vs tiny house on wheels guide explains the categories; the options below are matched to each.
The 7 main financing options
1. RV loans
Best for: tiny houses on wheels and park models that are RVIA certified or inspected to an RV standard. RV loans are secured by the home itself, work much like auto loans and often offer longer terms than personal loans. Lenders usually require proof of certification, a down payment and good credit. Without certification, many RV lenders will decline.
2. Personal loans
Best for: smaller budgets, uncertified builds, DIY materials or filling a gap. Personal loans are usually unsecured, fund quickly and do not care what you build. The trade-offs are typically higher interest rates, shorter terms and lower maximum amounts than secured loans, which can make monthly payments steep on a larger home.
3. Home equity loan, HELOC or cash-out refinance
Best for: backyard ADUs and casitas when you already own a home with equity. Borrowing against your house often brings lower rates than unsecured loans, and a HELOC lets you draw money as construction progresses. Texas has its own home equity rules: in most cases, total borrowing against a homestead is capped at 80% of the home's value, and there are required waiting periods and disclosures. Talk with a Texas lender who knows these rules well.
4. Construction loans
Best for: custom tiny or small homes on a foundation and larger ADUs. A construction loan pays the builder in draws as work is completed and inspected, then often converts to a permanent mortgage at the end (a "construction-to-permanent" loan). Expect the lender to want detailed plans, a fixed-price contract, a builder they approve and a down payment.
5. Traditional mortgage
Best for: permanent foundation homes on land you own, built to the local residential code. A small home that meets code, sits on its own land and can be appraised may qualify for conventional, FHA, VA or USDA loans, depending on the program and lender. Very small homes can be harder to appraise, so ask lenders early about minimum square footage and comparable sales.
6. Chattel loans
Best for: manufactured homes and some park models placed on land you do not own or on leased lots. A chattel loan is secured by the home as personal property, not by land. They are common in manufactured housing but usually carry higher rates and shorter terms than mortgages.
7. Builder or manufacturer financing — and cash
Some builders partner with lenders who understand tiny homes, which can make approval smoother. Compare those offers against your own bank or credit union. And many tiny home buyers pay cash, or combine savings with a smaller loan — one of the biggest draws of living small is owning your home outright years sooner.
Comparison table
| Option | Works for | Secured by | Typical terms* | Watch out for |
|---|---|---|---|---|
| RV loan | Certified THOW, park model | The home | Often 10–20 years | Certification required |
| Personal loan | Any build, DIY | Usually unsecured | Often 2–7 years | Higher rates, lower limits |
| Home equity / HELOC / cash-out refi | ADU, casita | Your existing home | Often 10–30 years | Texas 80% limit; your home is collateral |
| Construction loan | Foundation home, large ADU | Land and home | Short build period, then converts | Detailed plans and approved builder |
| Mortgage | Code-built home on owned land | Land and home | Often 15–30 years | Appraisal and minimum size rules |
| Chattel loan | Manufactured home, some park models | The home | Often 15–25 years | Higher rates than mortgages |
| Builder financing / cash | Any | Varies | Varies | Compare against outside lenders |
*Typical ranges only. Terms, rates and requirements vary by lender and change often — always confirm current offers.
What will my monthly payment be?
Your payment depends on the amount borrowed, the interest rate and the term. A longer term lowers the monthly payment but increases total interest. For a quick estimate across RV loans, personal loans, HELOCs and mortgages, use our tiny home loan calculator. To figure out how much you need to borrow in the first place, start with the cost calculator and our Texas cost guide.
How to improve your chances of approval
- Choose a certified or code-built home. RVIA/NOAH certification for homes on wheels, or IRC-compliant plans and permits for foundation homes.
- Get detailed plans and a written quote. Lenders want to see exactly what they are financing.
- Check your credit and pay down high-interest debt before applying.
- Save a down payment. Even 10–20% can improve your rate and approval odds.
- Talk to credit unions. Local Texas credit unions can be more flexible with unusual properties.
- Get pre-qualified before you finalize your design, so your plans fit your budget.
Using ADU rental income
If you are building a backyard ADU to rent, the future rent can help justify the investment — though most lenders will not count projected rent toward qualifying for the construction loan itself. Run the numbers with our ADU rental income calculator to see cash flow, return on investment and payback.
Cowboy Tiny Homes provides the detailed plans, specifications and quotes lenders ask for. We are not a lender and do not give financial advice, but we are happy to work with yours. This guide is general information; talk to a licensed loan officer about your situation.