Your ADU, simplified

We’ve reimagined the experience of building a custom ADU to save you time and money.
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Save money and time on your construction project

200+ completed projects


Cedar-Sided ADU Adds Space for Hosting and Working


Light-Filled ADU for In-Laws and Family Flex Space


Modern ADU Delivered with Transparent, Streamlined Process


The Ultimate ADU for Senior Living and Work-from-Home


Cozy Scandinavian-Inspired ADU Doubles as a Workspace and Guesthouse


This Burlingame ADU is the Perfect Blend of Comfort and Space Efficiency


Santa Clarita Attached ADU for Multigenerational Living


ADU in Alameda HOA Adds Flexible Space for the Family


Customized Craftsman ADU for Multi-Generational Family


Los Angeles Garage Conversion ADU

Design and build the smart way

Save money

with multiple competitive bids

Get three bids from providers in our network. Multiple bids means you get competitive pricing.
Get Started
Get Started

Save time

by accessing all the pros you need, in one place

We connect you with vetted architects, engineers and contractors to save you the time and hassle of piecing a team together yourself.
We connect you with vetted architects, engineers and contractors.
Start a Project
Start a Project

Avoid headaches

by connecting with trusted pros

Our network of providers is highly vetted and invite-only. We track how our pros perform on timeline and budget, keeping only the top providers on our platform.
Our providers are highly vetted, and we continuously track performance on timeline and budget.
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Learn More

“Working with the designer we found through Cottage was really collaborative, and we achieved exactly what we wanted. It felt like we were a team.”

Kathy, homeowner
Sophia, Designer
Gabriel, Contractor
Wyatt, Structural Engineer
Christian, Civil Engineer

"Working with Cottage was a fantastic experience. The designer and contractor they matched us with stayed on budget and on time. We love the result!"

Angela, homeowner
Evelyn, Designer
Aaron, Contractor
Jordan, Land Surveyor

“I had a great experience with Cottage. It was great to be able to manage everything for my project online.”

Jocelyn, homeowner
Sophia, Designer
Dylan, Structural Engineer
Javier, Contractor
Chloe, Energy Consultant

“Cottage was a great solution for our project. We liked that we could find all the providers we needed on the Cottage platform.”

Bob, homeowner
Elijah, Designer
Aaron, Contractor
Joseph, Civil Engineer

Streamlined process

Understand what’s possible on your property. Get preliminary guidance on budget and timeline.
Design & Permit
Choose from a curated list of architects best fit for your project. Work directly with them on design and permitting.
Get competitive bids from vetted ADU contractors. Choose the builder that’s right for your project and budget.
Your contractor will bring your ADU to life. Track their progress and make payments through our digital platform.

Already have a set of plans?

Upload them and we’ll get you multiple bids.
Get Bids
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Make room for more
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flexible space
family time
rental income