ADU Cost Calculator

Planning to build an Accessory Dwelling Unit? Use our advanced estimator to get a breakdown of design, permitting, and construction costs tailored to your market.

Project Details

Configure your ADU parameters

Select Market

ADU Type

Size (Sq Ft)500 sqft

Most ADUs range between 400 and 1200 sq ft depending on lot size and local regulations.

Finish Level

Estimated Cost

Preliminary Quote

...estimated total

Construction

Materials & Labor

Design & Engineering

Plans & Architecture

Permits & Fees

City & Impact Fees

This estimate assumes a flat lot with standard utility connections. Site-specific conditions like slope, soil quality, and utility upgrades can affect final pricing.

Get a Formal Quote

Send this estimate to our team for a detailed feasibility review.

Market Specific

Our data is calibrated for specific markets including Los Angeles, San Diego, and the Bay Area to ensure accuracy.

All ADU Types

From garage conversions to detached new construction, we cover every standard ADU configuration.

Real-time Estimates

Adjust size, finishes, and project scope to see how they impact your bottom line instantly.