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(650) 400-7606

Free preliminary planning tool

Preliminary ADU Cost Calculator

Carry your model forward and build a transparent preliminary cost and financing scenario in 9 simple steps.

Preliminary estimate

Project setup

Your selections are saved automatically.

Step 1 of 9 · Property

Progress saved

Step 1 of 9

Property

Confirm the project location and optional property dimensions.

Select a suggestion to auto-fill the city and ZIP code.

Parcel and existing home size auto-fill when you start from a property check. Both are optional and only refine your estimate.

Start with your property, then talk through the details.

(650) 400-7606ADUcaliforniainc@gmail.comADU California Inc. / ADU.zone