2026 cost guide
Tiny Home & ADU Cost Guide (2026)
By the Home Repair One data team · Updated July 2026 · Ranges from our estimator engine
Tiny homes carry a high per-square-foot cost precisely because they're small: a full kitchen, bath, and mechanical systems get packed into a tiny footprint. Prefab builds run roughly $140–$290 per square foot; custom work runs $255–$515. Type matters too: a tiny home on wheels, a foundation build, a park model, and a backyard ADU each price differently. Every range below is engine-derived and matches your estimator quote to the dollar.
Tiny home cost by size & finish
Every figure below is computed by the same estimator engine that gives you an instant quote, so the numbers here match what you'll see when you run yours.
| Size | Prefab essentials | Standard build | Custom & premium |
|---|---|---|---|
| Micro · ~200 sq ft | $29,000–$44,000 | $36,000–$55,000 | $52,500–$77,500 |
| Classic tiny · ~400 sq ft | $57,500–$87,500 | $72,500–$110,000 | $105,000–$160,000 |
| Roomy · ~600 sq ft | $85,000–$132,500 | $107,500–$162,500 | $155,000–$240,000 |
| ADU-size · ~900 sq ft | $130,000–$197,500 | $162,500–$245,000 | $235,000–$355,000 |
National ranges for 2026, building only. Land, site prep, permits, and utility hookups are quoted separately. Enter your ZIP in the estimator for a region-adjusted price.
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Type is the first lever
A foundation tiny home is the most economical per foot; a home on wheels adds a certified trailer and RVIA build standards; a park model is a purpose-built RV-class cottage; and an ADU carries the highest per-foot cost because it needs a foundation, permits, and utility connections tied into your property.
Small footprints, high per-foot rates
Because kitchens, baths, and systems don't shrink much, a 200 sq ft micro home can cost nearly as much per foot as a luxury house. In real quotes, going from 200 to 600 sq ft often earns a slightly better per-foot rate for the same reason. The estimator prices conservatively at a flat per-foot rate; your builder's firm quote captures any size efficiency.
Finish level and off-grid
Prefab-essentials builds keep it simple and affordable; standard builds add a full kitchen and bath with quality finishes; custom and off-grid packages (solar, composting, battery, designer materials) push the top of the range. The estimator lets you see the gap before you commit.
What the price does and doesn't include
The ranges here are for the home itself. Land, a foundation or pad, utility hookups, delivery, and ADU permit fees are separate. ADUs in particular carry site and permit costs that a home on wheels avoids, which is part of why they're priced higher.
Common questions
Can I legally live in a tiny home?
It depends on your local zoning and whether the home is on wheels, on a foundation, or a permitted ADU. ADUs are legal in a growing number of areas; a foundation tiny home follows residential code. Your matched builder knows what your jurisdiction allows.
What's the difference between the types?
A tiny home on wheels (THOW) is movable and RVIA-certified; a foundation build is permanent and code-built; a park model is a ~400 sq ft RV-class cottage; and an ADU is a legal second dwelling on a lot with a main house. The estimator prices each differently.
How accurate is the instant price?
It's built from published 2026 tiny-home and ADU cost data, adjusted for your type, size, finish, and region. It's an honest range, not a bid. Your builder sets the firm price after reviewing your plan and site.
Will a bunch of companies start calling me?
No. We match you with one vetted local builder for your project, your contact details are never sold to a marketplace of six.
Is an ADU worth it for rental income?
Often, yes, a well-placed ADU can generate meaningful rent and add real value to your property. The math depends on your local rents and build cost, both of which your matched builder can help you pencil out.
Do you build in my area?
We match nationwide through local tiny-home builders and ADU pros. Enter your ZIP in the estimator for a region-adjusted price; if we can't match you locally, you'll know quickly.
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