Cost estimator · Free · No sign-up
What will your project actually cost?
A preliminary planning range for your ADU, conversion, or addition. Adjust the sliders to see how project type, size, finish, and site conditions move the number. This is a planning estimate, not a bid.
Project type
New standalone build w/ own utilities.
Square footage
750 sf
400 sf1200 sf
Finish level
Region
Site conditions & add-ons
Next step
Turn your estimate into a detailed written proposal.
Send us your address and we'll pull the zoning, run a feasibility check, and come back with a plan. HomeAdd typically responds within one business day.