California's ADU Marketplace

Find the right ADU design for your property, then get cost estimates and permits to build your project — all on one platform.
Street address
State Zip code

Get your free ADU Property Report to start your project today.

Save on design and engineering fees.
$9,357 savings *

Average saved by homeowners using our platform vs architectural design fees.

* Based on market rate architectural fees of 8% of total project cost.

Find the right price for your project.
$84,500 - $339,300 *

Range of contractor cost estimates provided to homeowners on the ADU Marketplace.

* Based on projects in 2020 and excludes DIY projects.

Statewide experience in ADU approvals.
540 municipalities *

City and county jurisdictions served accross California.

* Zoning codes, building codes and permit fees vary by jurisdiction.

See what our customers have saved!
Detached ADU in Palo Alto, CA $15,150 saved
Garage Conversion in Seaside, CA $5,675 saved
Garage Conversion in Berkeley, CA $10,225 saved

Complete 5-Step Process

Browse hundreds of permit-ready ADU designs and order one to customize to your needs.
Connect with local contractors to get site visits and cost estimates for your project.
Mark up changes to your plans and provide critical info needed to permit your project.
Finalize your project blueprints to submit for building permits.
Select your contractor and build your project.

Customer Reviews

"My experience with Housable was exceptional. The team was extremely helpful and responsive. I am very satisfied and happy to have used these services. As a home owner I do not know the construction lingo or process but the Housable team very kind and helpful and patient with me. My expectations were exceeded. Thank you for everything."

Monica H. in Oakland, CA

Detached ADU in Livermore, CA

1,003 sq. ft., 3 bed, 2 bath - Built in 2020

Completed Project

Total Project Cost:
Architectural Design Fees
Market Rate
Architecture Fees:
Percentage of Project Cost:
Housable Fees
Design + Permitting
ADU Permit Set:
Percentage of Project Cost:

Net Savings With Housable:

Free ADU Property Report

Reviewing your property’s requirements is the first step for any ADU project. Use our platform without commitment; you decide when you are ready to build.

Street address
State Zip code

Permit-ready ADU Designs

Every project is unique. That’s why we provide hundreds of permit-ready ADU designs that can be customized to suit your needs and your property.

Try before you buy

Place designs on your property to compare and find the one that best suits/fits your needs.

Fully customizable

To customize, mark up your plans using our design editor.

Design Concept Example

Construction Marketplace

Set up site visits and get cost estimates from licensed contractors who specialize in ADU construction.

On-site estimates

With plans in hand you can discuss project specifics with contractors and get realistic cost estimates.

Construction permits

Involving contractors at the start can help you make the right design decisions, avoid costly mistakes, and get permits faster.

Permit Set Example

California's ADU Marketplace

To get started, confirm what you can build on your property with a free ADU Property Report:

Street address
State Zip code