Trailer Trash CashOwner financing is the whole model. Not a nice-to-have, not an occasional option for a buyer who can't get a bank loan, the entire reason this business works. You're not just reselling a home for a markup. You're turning a cheap purchase into a note that pays you every month for years, and the note is usually worth more than the flip ever was. Get the note wrong, though, and you can turn a decent deal into a legal mess that costs you the profit and then some. This guide walks through what owner financing is, how a note is put together, and the federal rules that decide how much room you actually have to work with.
What Owner Financing Actually Is
In a normal home sale, the buyer gets a mortgage from a bank, the bank hands the seller a lump sum, and the seller is done. Owner financing skips the bank. You, the seller, become the lender. Your buyer makes a down payment, and you carry the rest of the balance as a note, collecting principal and interest every month until it's paid off (or until you sell the note to someone else, which is its own conversation).
Why bother? Because most of the buyers in this market can't get a bank loan for a mobile home in the first place, especially a chattel-titled unit sitting on a rented lot. Manufactured-home loan applications get denied at a far higher rate than site-built home loans. Owner financing is what makes these homes sellable at all to a huge slice of buyers, and it's also what turns a one-time sale into recurring cash flow for you.
That second part is the actual business. A home you bought cheap and fixed up might sell for a decent one-time profit in cash. Sell the same home with a note instead, and you collect a down payment up front plus years of monthly payments that, added up, usually beat the cash-sale number by a wide margin. Less money today, more money over time, plus the risk that comes with being the bank.
The Anatomy of a Note
Whatever the specific numbers, every promissory note in this business needs the same core pieces:
- Principal: the amount financed, which is your resale price minus the buyer's down payment.
- Fixed interest rate: stated plainly in the note itself, not buried in a payment table where nobody will find it.
- Term: how many months the loan runs before it's scheduled to hit zero.
- Payment schedule: the exact monthly payment and the day of the month it's due.
- Late-payment terms: a grace period and a specific late fee, spelled out as real numbers. "Reasonable" is not a number. Don't use it.
- Default terms: what counts as a default and what you do about it. This is the section that decides how much trouble a non-paying buyer can cause you, and it deserves its own conversation about what happens if a buyer stops paying.
- Acceleration clause: your right to call the entire remaining balance due the moment a buyer defaults, instead of chasing one missed payment at a time for years.
- Amortization schedule: the full month-by-month breakdown of principal and interest, matching the payment you actually calculated.
That last piece runs on straightforward arithmetic, not gut feel. The standard loan-payment formula is:
M = P × [r(1 + r)ⁿ] ÷ [(1 + r)ⁿ − 1]
where P is the amount financed, r is your annual rate divided by 12, and n is the term in months. You don't need to do this math by hand every time. Plug your numbers into the free Deal Calculator and it'll spit out the monthly payment, total interest, and your annualized return in seconds, which is exactly the kind of thing you want to check before you hand someone keys, not after.
The Rule That Actually Runs This Business: Dodd-Frank and the SAFE Act
Before 2010, a seller could write as many owner-financed notes as they wanted, on whatever terms they wanted. The Dodd-Frank Act and the SAFE Act changed that, and they apply here whether you like it or not.
Federal regulation defines a "dwelling" to include a mobile home or trailer, whether or not it's attached to real property, as long as someone is going to live in it. That single detail is why this matters to you. A chattel-titled mobile home on a rented lot in a park counts, the same as a house on a foundation, the moment your buyer intends to live in it. You don't get a pass because the home isn't real estate. Unless you fit inside one of two narrow exclusions built for individual sellers, financing that sale is regulated like a mortgage.
One property, twelve months. If you're a natural person, not a business entity, and you finance the sale of one property in any rolling twelve-month period on a home you actually own, you get real flexibility. A balloon payment is allowed, meaning you can structure a shorter payment schedule with a lump-sum payoff at the end instead of paying it down to zero through regular payments. There's no formal requirement to document that you checked the buyer's ability to repay. You still have to avoid negative amortization, and your rate has to be fixed, or an adjustable rate that doesn't reset for at least five years.
Two or three properties, twelve months. Finance two or three properties in that same rolling year, and you can still avoid being treated as a loan originator, but the terms get stricter, not looser. Balloon payments are off the table entirely. The note has to be fully amortizing, meaning regular payments that pay the loan to zero by the end of the term. You also have to document a good-faith determination that the buyer has a reasonable ability to repay the loan. That's not optional paperwork you can skip if you're in a hurry. It's baked into the exclusion itself.
Read those two side by side and the pattern should be obvious: going from one deal a year to two or three doesn't just add a documentation step, it removes your ability to structure a balloon note at all. More volume means stricter structure, not looser. If you're planning to write more than one seller-financed note a year, plan around the fully-amortizing, ability-to-repay-documented version from day one. Don't treat the one-property path as a trick you run repeatedly, waiting out the twelve-month clock between deals. That's not what it's for.
Four or more, and you're outside both exclusions. At that point you're exposed to loan-originator compensation and qualification rules, and separately, you may need to think about mortgage loan originator licensing under the SAFE Act. Here's the honest, unsettled part: the SAFE Act's trigger is written around whether someone is originating loans "habitually or repeatedly" in a commercial context, and regulators have never drawn a hard number for what counts as habitual. It's administered state by state through the national licensing registry, so the answer can differ depending on where you live. At this volume, the practical move isn't to look for a workaround. It's to structure through a licensed or exempt lending arrangement, a dealer relationship, or an actual licensed loan originator. Keep a simple running log, closing date next to each note, and check it against the rolling twelve-month window before you write a new one. It's the cheapest insurance you'll ever buy in this business.
Usury: Keep Your Rate Under the Cap
Separate from all of the above, every state caps the interest rate you're legally allowed to charge, and a seller who carries a note counts as a lender for this purpose. Go over the cap and you risk losing the interest, losing the whole contract's enforceability, or worse, depending on your state's penalty structure.
These caps vary a lot and they change. Texas's default legal rate for a written contract runs around 10% a year under a genuinely complicated finance code. Florida's civil usury ceiling sits at 18% a year on most loans, with criminal exposure above that. Every other state has its own number, and you need to look yours up before you set a rate, not estimate it from a guide like this one and not copy a number you saw in a forum post. You may also run into something called the time-price doctrine, a legal theory in some states that treats a credit-sale price difference as part of the purchase price rather than interest. Treat that as a concept to be aware of, not a plan to build a deal around. Its availability is inconsistent and contested in plenty of states. If a deal only works because you're counting on a usury workaround, the deal doesn't actually work.
Structuring a Note That Protects You
Put it all together and a note that protects you does four things: it stays inside one of the two federal exclusions for your actual deal volume, it states a rate you've confirmed is under your state's cap, it spells out late fees and default terms in real numbers instead of vague language, and it gives you an acceleration clause so you're not stuck chasing one missed payment a month for years. None of that is complicated once you know the shape of it. Most of the risk in this business isn't the home. It's writing a note like it's still 2005.
Once your note terms make sense, the next question is what you actually do when a buyer stops paying, and how the title and tax pieces fit around the deal. Those, along with contract templates you can actually use and worked example deals, are in the complete toolkit.
This is educational content, not legal advice. Seller-financing law, usury caps, and licensing thresholds vary by state and change over time. Before you write a note, have a local attorney confirm how these rules apply to your specific situation.