DADU Solutions · Know Before You Build

DADU Cost Estimator

Start with a realistic planning range—not an artificially low number that grows later. ZIP code, property conditions, project size, and finish level all affect the cost of a DADU.

Tell us about the project

This takes about one minute. No contact information is required.

Square feet: 400–1,200
Bedrooms
Bathrooms
Quality and finish level
Site conditions
Utility complexity
Existing structure removal

The model uses ZIP-based regional adjustments plus construction, design, engineering, permitting, site, utility, demolition, and contingency allowances. It is intended for early planning—not bidding, lending, appraisal, or construction contracting.