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What Is a Tiny Home? The 2026 Definitions Guide
The phrase "tiny home" covers four distinct legal categories of small dwelling, each with different permitting, financing, and resale implications. Here's the 2026 reference.
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The phrase "tiny home" gets used as if it describes one product. It does not. In 2026 the phrase covers four distinct legal categories — recreational vehicle, park model RV, HUD-Code manufactured home, and small modular home — each with different construction standards, different permitting pathways, different financing options, and very different resale market dynamics. Buyers who treat "tiny home" as one product make the most consequential decision of their purchase by accident. Buyers who understand which category they actually want make every subsequent decision better.
The Four Categories
Category 1 — Recreational Vehicle on Wheels
An RVIA-certified tiny home built on a chassis and titled as a recreational vehicle through the state DMV. Financed as an RV. Permitted as an RV — meaning it cannot be a primary residence in most US jurisdictions and is restricted to RV parks, campgrounds, or temporary accessory placements with strict duration limits. Typical footprint 100 to 400 square feet. Depreciates on the vehicle comp curve.
Category 2 — Park Model RV
A larger fixed-trailer unit, typically 400 square feet, built to the ANSI A119.5 park model standard. Also titled as an RV in most jurisdictions but designed for semi-permanent placement. Same primary-residence restrictions as Category 1 in most US jurisdictions.
Category 3 — Manufactured Home
A factory-built home constructed to the HUD Code — the federal manufactured housing standard. Can be placed as a primary residence on appropriately-zoned land across the US, financed through manufactured-home specialty lenders like 21st Mortgage or Triad Financial Services, or through conventional mortgage products after foundation conversion and title cancellation. Typical footprint 400 to 1,800 square feet. Appraises on the manufactured-housing comp curve.
Category 4 — Small Modular Home
A factory-built home constructed to the local building code (the same code that governs site-built houses), shipped in modules, assembled on a permanent foundation. Treated as conventional real property from day one. Financed through standard mortgage products. Appraises on the same comp curve as site-built homes. Typical footprint 400 to 1,200 square feet for the small-modular subset of the category.
Why The Category Matters More Than the Category Name
The marketing phrase "tiny home" can describe any of the four categories. The legal classification determines:
What permit office handles the project. What lender will finance it. What insurance products apply. What zoning frameworks permit it as a primary residence. How it appraises. What it resells for. Whether it qualifies for FHA, VA, or conventional mortgage products. Whether it pays property tax or personal property tax.
The same exterior unit, marketed as a "tiny home," can route through any of these four categories depending on the construction standard and the documentation. The category — not the marketing phrase — determines the buyer's experience.
How to Identify Which Category a Specific Unit Falls Into
Five signals identify the category quickly.
First, the manufacturer's data plate. The plate records the construction standard the unit was built to (RVIA, ANSI A119.5, HUD Code, or local building code). The plate is the authoritative document.
Second, the title or absence of title. RVs and park model RVs are titled through the state DMV. Manufactured homes have a separate title that is "killed" upon permanent installation and conversion to real property. Modular homes have no separate title and convey with the land.
Third, the chassis or absence of chassis. RVs and park model RVs are built on a chassis. Manufactured homes are built on a chassis (which is often removed at permanent installation). Modular homes are built without a chassis.
Fourth, the wheels or absence of wheels. RVs have wheels for road use. Park model RVs have wheels but are typically set on blocks. Manufactured and modular homes may have transport wheels for delivery but are not wheeled at installation.
Fifth, the marketing language. Honest operators in each category use the legal classification accurately. Operators who blur the categories — marketing an RVIA unit as a "tiny home" without disclosing the legal classification — are signaling either ignorance or intent to obscure.
Where PERCH Fits
PERCH was built specifically to compress the operator-and-process work this guide describes. The verified ADU and small-home builder directory covers operators in each US region with documented installation history, real references, and traceable post-sale support. The marketplace surfaces verified inventory for buyers comparing options across configurations.
Ready to apply this to your specific project? Join the PERCH waitlist → for early access to verified operator inventory and concierge buyer support.
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