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Free Planning Tools

Free Tiny Home Calculators & Planning Tools

Size it, price it, finance it and see what it could earn — before you ever call a builder. Every tool is free, runs in your browser and takes about a minute.

Plan Smarter

Tools Built by Tiny Home Designers

Cowboy Tiny Homes built these calculators from the same planning numbers our designers use in first consultations. Use them in order — or jump to the one you need.

CalculatorTiny Home Cost CalculatorPick a home type, size, finish level and add-ons like septic, solar and utility hookups to get a low-to-high Texas budget with a line-by-line breakdown.Estimate my cost → QuizWhich Tiny Home Is Right for Me?Six questions about your land, lifestyle, budget and financing match you with a tiny home on wheels, park model, ADU or custom foundation home.Take the quiz → PlannerTiny House Size PlannerAdd bedrooms, baths, lofts, kitchens and storage to see how many square feet you need and which home types can hold it.Plan my space → CalculatorADU Rental Income CalculatorCompare long-term and short-term rental income for a backyard casita and see monthly cash flow, cash-on-cash return and payback.Run the numbers → CalculatorTiny Home Loan CalculatorCompare RV loans, personal loans, HELOCs, mortgages and construction loans with a monthly payment and year-by-year payoff schedule.Estimate payments →

How Our Estimates Work

Every cost figure across these tools comes from one shared model: Texas 2026 planning ranges per finished square foot for builder-built homes, adjusted for finish level, plus typical price ranges for site work such as foundations, septic systems, wells, utility hookups and solar. A tiny home on wheels, for example, is modeled at roughly $175 to $300 per square foot at standard finishes, and an ADU at roughly $190 to $340.

The results are planning ranges, not bids. Land is never included, and real projects vary with design complexity, site conditions, material prices and local permit fees. Loan rates in the tools are illustrative examples — replace them with quotes from your lender.

When your numbers look right, each tool's results button sends a summary straight into our contact form, so a Cowboy Tiny Homes designer can turn your estimate into a written quote.

Suggested order

  1. Take the quiz

    Find the home type that fits your land and lifestyle.

  2. Plan the size

    Add up the rooms you really need.

  3. Price it

    Get a full budget with site costs.

  4. Finance it

    See the monthly payment — and rental income for an ADU.

Read the Guides Behind the Numbers

GuideCost to Build a Tiny House in TexasReal 2026 cost ranges for tiny homes on wheels, park models, ADUs and foundation tiny houses in Texas, with a line-by-line budget breakdown.Read more →GuideTiny House Laws in TexasAre tiny homes legal in Texas? How building permits, zoning, IRC Appendix Q, RV rules and HOA restrictions apply, plus an interactive permit checklist.Read more →GuideTiny Home Financing in TexasHow to finance a tiny home in Texas: RV loans, personal loans, HELOCs, construction loans, mortgages, builder financing and cash, compared.Read more →

Ready to Build Your Tiny Home in Texas?

Tell Cowboy Tiny Homes about your land, budget and must-haves. We will map out what you can build, what it will cost and how long it will take — free, with no obligation.

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