Every cost line from our 2026 off-grid tiny home cost breakdown, in a calculator that adds itself up. Put in the quotes you have actually been given, leave the rest at zero, and see where your build really lands — including the 10% contingency almost nobody budgets for.
Type your own quotes into the boxes and everything totals itself. The grey figures are typical 2026 US ranges, there to sanity-check what you are being quoted. Leave a line at zero if it does not apply to your build — several are alternatives to each other. Nothing is sent anywhere; it all stays in your browser.
Figures are 2026 US averages compiled from HomeGuide, Little Houses For Sale, SepticTankHub and Off Grid Authority. Land, labor and permits vary enormously by county — replace every one with a local quote before you commit money.