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How much does a tiny house trailer cost?

Work out what a tiny house trailer actually costs to land in your driveway, ready to frame on, rather than the base price a maker quotes. A purpose-built THOW chassis gets priced by its length, but the quote is not the whole story: to build on it you add the width kit that carries the deck out to the full road-legal 8.5 feet, the utility and flashing provisions, a spare, and the freight to get an oversize load from one of a few makers to your lot, plus what your state charges to title it. Put in the base quote and each of those extras, and see the landed, build-ready total and how far the base price sits below it. This prices the foundation only. The house built on top is the large money and it is a separate budget.

§ 01 Your numbers

Change anything. The answer updates as you type.

The purpose-built tiny house chassis a maker quotes for a given length, with axles, wheels, brakes and lights. The default is ours and a placeholder.
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This is the number a maker puts on a base bumper-pull chassis of a standard length, and it is the figure people repeat as the trailer's cost, which is why the rest of this form exists. Two forks set it before you tick a single option. The first is length, because a tiny house trailer is sold by the foot and the length you pick is the one thing you cannot change once the house is framed, so it caps your floor area for the life of the build. The second is a purpose-built THOW trailer against a repurposed flatbed or a used gooseneck, and the used route is the frugal way in with a catch worth pricing now: a chassis engineered for a house comes with the deck height, the outrigger points and the weight layout a dwelling needs, and a hauling trailer was rated for a load that sits low and comes off again, not for a cabin bolted on for good. Get the axle and frame ratings in writing whatever you start from, because this is the one line you build everything else onto.
The outriggers or wideners that carry a narrower base deck out to the full 102 inches you are allowed to tow. The default is ours and editable.
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Many base chassis are quoted with a deck around 8 feet, and the law lets you tow to 8.5 feet, so the outriggers that reach that extra half-foot are a real option rather than a luxury, because every inch of deck width is an inch of floor and wall you get to keep for the whole life of the house. The kit is steel that extends the frame past the wheels and gives the walls something to land on out at the legal edge, and it is far cheaper to specify when the chassis is built than to weld on afterward. Decide it against your floor plan rather than in the abstract: a design that runs cabinets and a stair down one side wants the full width, and a simpler plan may not, but the choice is made once, at the frame, and it sets the footprint you live in.
The provisions that make a bare chassis ready to build on: a utility access box, a flashing or skirt kit, a spare wheel and stabiliser jacks. The default is ours and a placeholder.
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A bare rolling chassis is not the same thing as a chassis you can start framing on, and this line is the gap between them. The provisions that matter are the ones you cannot easily add once the subfloor is down: a utility box or access point for the water, power and waste that have to come up through the deck, a flashing or skirt kit that closes the trailer off underneath so the floor cavity is sealed and insulated, stabiliser jacks so the house sits still while you build and live in it, and a spare wheel for an oversize trailer you will one day tow loaded. None of it is glamorous and all of it is far cheaper specified now than retrofitted through a finished floor, which is exactly why it slips off the base quote and onto this line.
A step up in axle rating and running gear, or the move to a gooseneck, for a heavier or longer build. Put zero if the base rating suits your plan. The default is ours and editable.
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The base chassis is rated for a build of a certain weight, and a heavier design pushes past it, so this line prices the step up before the house makes the decision for you. A tiny house is dense: framing, sheathing, cladding, a metal roof, appliances, water and a loft of belongings add up faster than first-time builders expect, and a chassis that was fine on paper can be over its rating once it is a finished home you tow down a motorway. The forks here are a higher axle rating and heavier running gear on the same bumper-pull, or the move to a gooseneck, which buys length and a more stable tow and a raised bedroom over the hitch at a higher price. Size the rating to a realistic finished weight with a margin, not to the frame empty, because the rating is fixed the day the chassis is built and the house only ever gets heavier.
What it costs to get the trailer from one of a few makers to your lot. Put zero if you are collecting it yourself. The default is ours and a placeholder.
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A tiny house trailer is built by a small number of specialist makers rather than sold off a local lot, so unless you happen to live near one, the chassis has to travel to you, and an 8.5-foot-wide trailer is an oversize load that a hauler charges for by the mile. This is the line first-timers leave off the most reliably, because it is invisible on the maker's web quote and only appears when you ask for a landed price, and on a cross-country haul it is a figure that competes with the options above rather than a rounding error. You can cut it by collecting the trailer yourself if you have a tow vehicle rated for an empty chassis and the time for the trip, which is a fair trade to price rather than assume, so this line is editable to zero for exactly that case.
What your state charges to title and register the trailer. The default is ours and a placeholder, because this one is local.
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A tiny house trailer is titled and registered as a trailer, and the path is its own and worth ten minutes with your state's rules before you take any total seriously, including this one. Some states register it on weight alone, some want an inspection or a VIN check, and the makers usually supply a manufacturer's certificate of origin that the process starts from, so keep it with the chassis paperwork rather than in a drawer. The fee itself is usually modest next to the trailer, but the registration is what makes the finished house legal to tow to the site you park it on, so it belongs on the ledger from the start. Put your own figure in and treat our default as a stand-in that is probably wrong for your state.
Estimated cost
$7,950
  • Base trailer quote (engineered THOW chassis)$5,200
  • Width kit (outriggers to full 8.5 ft deck)$700
  • Build-ready options (utility box, flashing, spare, jacks)$500
  • Heavier axle rating or gooseneck upgrade$600
  • Freight from the maker$800
  • Title and registration$150
  • Total$7,950
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$6,500 to $11,000 is the usual shape of a trailer bought to carry a real tiny house: a purpose-built chassis of a proper length, the width kit out to 8.5 feet, the utility and flashing provisions, a rating sized to a realistic finished weight, and the freight to land it. This is the band where the split matters more than the total. Look at how much of your number is the base quote and how much is the extras that land it, because the extras are the part that makes the trailer build-ready and the part most likely to be left off a web quote and then discovered at a point where it is far more expensive to fix.

What this assumes, and where it could be wrong

Every one of these is a place the number could be off. They are here because you should be able to check our working, not because we are hedging.

THE PRICE YOU ARE QUOTED IS THE BASE TRAILER, AND THE BASE IS NOT THE BUILD-READY ONE.
This is the whole page. A maker quotes a base chassis of a given length, and that is the figure people repeat as the cost of a tiny house trailer, but it is not the trailer you can start framing on. To get there you add the width kit that carries the deck to the full road-legal 8.5 feet, the utility and flashing provisions that seal the floor and route the services, a spare, the heavier rating if your build is heavy, and the freight to move an oversize load from one of a few makers to your lot, plus the plate. At our defaults the base is $5,200 and those extras are $2,750, for a landed, build-ready total of $7,950. None of the second half is hidden and none of it is exotic, it is just that it lives off the web quote and appears one option at a time, so it never gathers itself into the headline figure the way the base price does. Adding it up before you order is the single most useful thing this page can do for you.
The trailer is the one line you cannot redo later, so it is the wrong place to save.
Every other part of a tiny house is changeable: you can re-clad it, re-wire it, swap the appliances, gut and rebuild the interior. The trailer is the exception, because the dwelling is bolted to it for its whole life, so the length caps your floor area, the rating caps how heavy you can build, and the width is fixed by the law that lets you tow it. That makes the dollar spent here the one with the most leverage in the project and the one place where a saving today is paid back with a rebuild tomorrow. The reader most tempted to buy the frugal chassis is exactly the reader this line is for: a used flatbed or an under-rated bumper-pull looks like a few thousand saved, and it can cost far more than that when a finished house has to come off a trailer it should never have been built on. Buy the trailer for the house you are going to build, with a margin, and treat this as the line to get right before any other.
Freight is a real line, and it is the one that is invisible on the web quote.
A tiny house trailer is built by a small number of specialist makers rather than sold off a local lot, so the chassis usually has to travel to you, and an 8.5-foot-wide trailer is an oversize load a hauler charges for by the mile. At our defaults that is $800, and on a cross-country haul it competes with the options rather than rounding away. It is invisible on the maker's web quote because that quote is for the trailer at the factory gate, not landed at your lot, so the honest total only appears when you ask for delivery and add it yourself, which is what this line is for. You can cut it to zero by collecting the trailer with a tow vehicle rated for an empty chassis, and that is a fair trade to price rather than to assume, because the trip has a cost in fuel and days even when the hauler's invoice goes away.
No cost for the house on top, because that is a different and larger budget.
The figure you would most like this page to also print is the one it will not: what the tiny house itself costs. That is deliberate. The dwelling built on the trailer is the large money and it ranges from a weathertight shell to a fully finished home with appliances and off-grid systems, so a single number for it would swamp the foundation figure this page exists to isolate and quietly become the answer to a question you did not ask. Price the trailer here, treat it as the foundation line of a bigger budget, and take the landed total across to a full tiny house build budget as its starting number. Keeping the two separate is the point: the trailer is a quote plus freight plus a plate, and the house is a build, and folding them together is how a reader ends up unable to say what either one actually cost.

This ledger is the trailer, landed and build-ready, and it stops at the point you can begin framing. What is above is the base chassis, the width and build-ready provisions, the rating you need, the freight and the plate. It does not include the tiny house built on top, which is a separate and larger budget, nor the tow vehicle to move a finished house, nor the land or the parking spot, nor what it costs to insure and maintain the trailer over the years it carries the home. If you are comparing a purpose-built THOW trailer against a repurposed flatbed or a used gooseneck, run this page for your build-ready total on the purpose-built side and hold the used chassis up against it honestly, adding the outriggers, the deck prep and any re-rating the used one needs to reach the same starting point, because the frugal trailer is only frugal after those are counted. Finance charges are absent here too: this is what the trailer costs, not what a loan on it costs.

Frequently asked questions

How much does a tiny house trailer cost?
It depends on the length, the width and the options, which is why this page adds up your own figures rather than quoting one. A purpose-built THOW chassis is priced by its length, and the base quote is the figure people repeat, but the trailer you can actually build on adds the width kit that reaches the full road-legal 8.5 feet, the utility and flashing provisions, a spare, a heavier rating if the build is heavy, and the freight to get an oversize load from one of a few makers to your lot, plus the plate your state wants. At our defaults the base quote is $5,200 and those extras are $2,750, for a landed, build-ready total of $7,950, and every one of those defaults is ours and editable. Put your own numbers in the form above and you get a figure for the foundation you are actually going to build on. This prices the trailer only; the house on top is a separate budget.
Why is the landed price higher than the quote I saw online?
Because the online quote is the trailer at the factory gate, and the price that matters is the trailer landed at your lot and ready to frame on. The maker quotes a base chassis of a given length, and the extras that turn it into a build-ready foundation live off that quote and appear one at a time: the width kit out to 8.5 feet, the utility and flashing provisions, a spare, the heavier rating a dense build needs, and the freight for an oversize load. At our defaults those extras are $2,750 against a $5,200 base. Freight is the one people leave off the most reliably, because it is invisible on the web quote and only appears when you ask for a landed price. The way to stop being surprised is to price the extras before you order, which is what the form above is for: fill each line from a real quote and the total stops being a moving target.
Should I buy a purpose-built tiny house trailer or repurpose a used one?
A purpose-built THOW trailer costs more up front and comes ready for a house, and a used flatbed or gooseneck is the lower cash figure with work to do, so the honest comparison is your build-ready total on both sides rather than the two sticker prices. A purpose-built chassis arrives with the deck height, the outrigger points and the weight layout a dwelling needs, and it is rated and documented for the job. A used hauling trailer was engineered for a load that sits low and comes off again, so to reach the same starting point you often add outriggers, deck prep and a re-rating, and you take on the risk that a chassis you did not spec is under-built for a house bolted on for good. Run this page for your purpose-built landed total, add the retrofit to the used trailer honestly, and compare the two build-ready figures. The trailer is the one line you cannot redo once the house is on it, so this is a place to let the numbers rather than the sticker make the call.
Is the tiny house itself included in this total?
No, and that is on purpose. This page prices the trailer only: the base chassis, the width and build-ready provisions, the rating, the freight and the plate. The dwelling built on top is a separate and larger budget, and it ranges from a weathertight shell to a finished off-grid home, so folding it in would swamp the foundation figure this page exists to isolate and turn a clear trailer number into a fuzzy whole-project one. Use the landed total here as the foundation line of your full build budget and add the house to it there: the subfloor and framing, the cladding and roof, the windows and doors, the interior, the plumbing and electrical, and the appliances and systems. Keeping the trailer separate is what lets you say cleanly what the foundation cost, which matters most when you are choosing between chassis or between building and buying a finished tiny house.

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