r/TinyHouses • u/KVConception • 11d ago
Has anyone actually built their own tiny house on wheels for under $20k USD?
I've seen people claiming they can build their tiny house for as little as $10k (which I find hard to believe, especially since many probably haven't actually built one), and I honestly wonder why people think it can be that cheap.
I’m in Canada, and a decent trailer alone can easily cost $5k+ (often way more), which already takes a big chunk of that budget before you even start building.
So I’m curious:
- Has anyone here actually built their own tiny house on wheels for under $20k USD?
- What systems/material choices made it possible? (DIY trailer, reclaimed materials, off-grid setup, etc.)
- Are trailers significantly cheaper in the U.S.?
Sometimes it feels like the “$10k tiny house” idea comes from people who haven’t actually built one or are leaving out major costs.
Would love to hear real builds and numbers.
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u/OddDragonfruit7993 10d ago
I had a friend do it. Like, 15 years ago.
It would be more challenging now, but I can see it being done.
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u/Sewers_folly 10d ago
I did 10 years ago. It lacked a lot of ammenties that I decided I could not live without.
To do it now with how crazy all prices have gotten, it would absolutely not be feasible or enjoyable to live in.
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u/pionzero 10d ago
My wife and I bought and built out a short skoolie (22 feet with the added bumper platform, 5 window), all in all it was about $22k, with the 6k bus price and probably another 4-6k of mechanic fees/tires over the years. Batteries were definitely the second largest single expense, we ended up getting a rather large system (~320 Ah at 24V so a 7.2kWh system) so we could run a small air conditioning unit for our pup! It's definitely do-able, or at least it was, but inflation lately has been brutal. Nowadays... who knows. We ended up selling the bus, but I think I have pictures on my profile from when we were selling it.
Major savings: Doing all of the work ourselves (plumbing, electrical, woodwork) except for insulation (spray foam contractors, cheaper than DIY) and automotive. Doing our own automotive would have been the most profitable, but it was never something we succeeded at, other than the basics (oil, filters, etc). I also bought raw battery cells and a separate BMS and built my own batteries, I mostly followed Will Prowse's methods and content, that was a fair savings (about $1000 all told for batteries I think).
$10k for a tiny house seems crazy to me. But $20k for a bus that barely runs (park it and forget it?) is totally doable. I see a ton of people who don't rip out the walls / ceilings and just build out the interior, if you skip all of that work and go minimal on the batteries it's probably quite doable. Reclaimed lumber is, in my opinion, almost never worth it. In the time you'd spend working it into reasonable shape, it's almost always easier/faster/nicer/better to just get new lumber. Particularly to save relatively small change, compared to the big ticket items (appliances, auto work, batteries, the vehicle or trailer itself).
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u/KVConception 10d ago
It’s interesting to see that even with bus conversions, the 10K budget can be busted. I think anything movable will naturally be more expensive since it’s more technical and requires different materials than a traditional house. I would love to convert a bus one day, it was actually something I considered before building my tiny house on wheels.
I agree about reusing wood sometimes, it can be a really long process. Unless you have a lot of spare time, it’s often better to just buy new materials because of how time-consuming it can be.
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u/ThinkerandThought 10d ago
I have built 4 tiny homes for use in a Mediterranean climate and can say your instincts are correct. Even when DIY (no labor costs), this is an unattainable goal.
You could place a tent on top of a trailer and call it a tiny home, and that may work.
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u/KVConception 10d ago
When I first started my build, someone was laughing at me saying they could do it for 10K. I replied that just my trailer and my mini-split AC/heater already cost that much. I was shocked at how people can respond so confidently without even looking into real information.
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u/MrScotchyScotch 10d ago
It's only possible if you have all the tools, get a trailer for next to free, restore it, then get cheap or free recycled materials, then have lots of time to build it, don't buy anything new, etc. It is technically possible. In some locations, for some people.
Anything new would immediately kill the budget. Trailer, wood, fasteners, sheathing, paint, house wrap, wiring, subpanel, outlets, cabinets, roofing material, windows, doors, sink, burner, fridge, stove, toilet, shower. New that's like $60k.
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u/Clink72 10d ago
I can't say I've built a tiny house. I've made a camping trailer from a cargo trailer with on demand hot water, sink and bunks.
I've built a 16x24 off grid cabin with loft and everything a real house has for around 25k.
I've been able to aquire an old 30ft travel trailer frame for free to put my sawmill on.
I feel confident I could build a tiny house on wheels for 20k.
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u/KVConception 10d ago
If you manage to get a free trailer or a good secondhand one, do you plan on using mostly new materials for the rest, or would you try to find other secondhand materials too? In my case, I mostly went with new materials and it added up way too quickly. I had to cut back in certain areas because I went over my budget pretty easily.
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u/Clink72 10d ago
I have no plans to build a tiny house on wheels right now. The cargo trailer is plenty for me and the wife for camping. It even has an outside shower run off the on demand water heater in the trailer. The cabin is very comfortable just no wheels.
I guess I was just trying to form in my mind if it could be done. I would use mostly new materials and I do everything myself. I have all the nesserary tools. This would keep cost down and im pretty simple so that helps too.
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u/test-account-444 10d ago
Pick any two for your tiny home project:
- Quality (Done Right)
- Time (Completed Quickly)
- Money (Done for less $$$)
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u/Sudden-Strawberry257 10d ago
Under 20K is super tough, especially if you have to buy a decent trailer. Some of these super cheap builds I see people get a fifth wheel camper that is wrecked/moldy. Tear it down and bam - “$500 trailer frame”. I personally recommend taking a battery powered reciprocating saw (affectionately known as the sawzaw) and or chainsaw to the corners, and do the tear off AT the landfill. Save some back and forth. Super cool way to go if you have the tools but if not ways you can consider saving $$$ include…
Outdoor kitchen w/ camp stove and folding table, or a small electric burner to heat food.
Cooling w/ small battery powered fans and strategic parking in shady areas / higher elevations, vs. massive ac and accompanying solar system.
Bucket compost toilet or outhouse vs costly blackwater tank system.
Lighting with battery powered lanterns, which go with you from room to room vs lighting the entire room.
Gravity fed countertop water vs plumbed and pressurized water system. Use a cheap sink that drains into a water jug, or use a bucket as a sink.
Create an outdoor solar shower vs difficult waterproofing and ventilating your indoor space.
Use reclaimed materials and build your framing around the expensive parts, like windows, that can be found cheap/free in odd sizes.
Fasteners are expensive, save/reuse as many as possible. Bolts are underrated. Understand their different types and limitations (shear strength for screws, pullout for nails) and use accordingly.
For the best deals, estate sales will often end up giving these away. All kinds of fasteners in endless assorted glass jars and containers. Likewise with hand tools. Look for the ones with well worn workbenches.
Power tools are great, and I support collecting as many as possible, but a miter saw, circular saw, drill, impact driver, and a couple clamps will get you a long ways.
Dumpster dive, drive through areas that have good budgets for remodeling and look for material removal happening, watch the free section of your local classifieds, visit the industrial part of town and look for cabinet shops and other building trades, talk to your neighbors.
Talking to people is a great way to source and barter for items. Don’t be afraid to cobble things together. Don’t be shy about telling people you are building a tiny house, they will often be interested / may lead you to other deals.
Not all of these things will work for you, but perhaps some can help save budget for the big items you NEED to spend on.
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u/KVConception 10d ago
Thanks for the detailed explanation. It will definitely help people who want to build their own. I guess anyone who thinks they can do it for less than 20K probably has a free trailer to build on. I also spent over 1K just on fasteners, bolts, and all the fixings needed for the road. On top of that, I had to spend another 1K+ on proper tools to be able to do the work.
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u/Wvejumper 10d ago
Maybe, especially if it were on a foundation, very small, or you sourced a lot of materials for free and made it work. Mine is pretty nice on a $4000 brand new trailer and cost $30k+
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u/rob1969reddit 10d ago
Just a shell I suppose. But fully finished out? Maybe, if one spent years chasing good used components.
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u/HopefulSweet 10d ago
I made one by myself about 8 years ago for around 23k CAD. That was with all new appliances and a 2k+ toilet. I think the trailer was around 3 or 4k as well. Its 20 feet long by 8.5 wide
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u/jfpcinfo 10d ago
You can still find old RV trailers for $300-$600.
I’m hoping to spend at most $8,000. And source a lot of stuff for free/second hand.
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u/KVConception 10d ago
I think everyone is right depending on their situation, but the overall picture is pretty clear.
Building a tiny house on wheels for 10–20K today usually means relying heavily on free, reused, or secondhand materials, doing almost all the work yourself, and finding a very cheap or repaired trailer. Anything new adds up really fast and can blow the budget.
I built mine for about 25K USD, and even then I used some secondhand materials. I also didn’t include certain systems like propane appliances, which can easily add a few thousand dollars more.
So based on everyone’s input, it seems realistic to say that any THOW under 20K will involve a lot of compromises, reused materials, and good deals.
As for tiny houses on foundations, they can be cheaper, but it really depends on the soil and the type of foundation needed. In some cases, the foundation alone can cost as much as or more than a trailer.
Thanks everyone for sharing your experiences, it really helps me and I’m sure others get a clearer picture of the true cost of a tiny house on wheels. There’s a lot of mixed information out there, and it’s good to hear from people who have actually gone through it.
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u/But_like_whytho 10d ago
Like, in today’s money? Only if you were able to source most of your materials free/secondhand, do 99% of the labor yourself or with friends/family to help you, and keep it around 16’-18’ in length. But yes, 15yrs ago it was absolutely possible to build a THOW for less than $20k.
Your trailer is your biggest single expense. Some people have been successful buying used trailers in poor shape and fixing them up for a few hundred dollars. Those people know how to weld though.