Serving San Diego, Greater LA, SF Bay, & Seattle
Watch our free ADU webinar
Custom ADUs Made Simple
Why Homeowners Choose Cottage
Custom Designed
Custom Designed
Zero Hassle Process
Zero Hassle Process
Best-In-Market Value
Best-In-Market Value
Vetted Contractors
Vetted Contractors
100+ completed ADUs and counting
In-Law Unit
Flex Space
Stunning San Jose ADU Adds Space for Hosting and Working
In-Law Unit
Office / Hobby Space
Cozy Scandinavian-Inspired ADU Doubles as a Workspace and Guesthouse
In-Law Unit
Flex Space
Mill Valley ADU for In-Laws and Family Flex Space
Flex Space
Rental Income
In-Law Unit
Office / Hobby Space
This Spanish Bungalow ADU is The California Backyard Dream
Flex Space
In-Law Unit
Rental Income
Los Angeles Garage Conversion ADU
In-Law Unit
Flex Space
Modern ADU for Family in Saratoga
Rental Income
Flex Space
San Diego Surf Casita - Rental Income ADU with California Vibes
Flex Space
Rental Income
In-Law Unit
Modern ADU with Customized Design & Turnkey Build
In-Law Unit
Santa Clarita Attached ADU for Multigenerational Living
Flex Space
Office / Hobby Space
Rental Income
ADU in Alameda HOA Adds Flexible Space for the Family
In-Law Unit
Flex Space
Customized Craftsman ADU for Multi-Generational Family
Rental Income
Flex Space
Customized LA Bungalow ADU for Rental and Personal Use
Rental Income
Brand New Guest Cottage in Midtown Palo Alto for Local Residents
Flex Space
In-Law Unit
Rental Income
Office / Hobby Space
468 Sq Ft, 1 Bedroom ADU Perfect for Your Backyard Space
Flex Space
Rental Income
Efficient and Open 2 Bedroom Accessory Dwelling Unit in Castro Valley
"Cottage really helps make the ADU process accessible, approachable, and less intimidating."
Harold
Cottage Homeowner
"Cottage really helps make the ADU process accessible, approachable, and less intimidating."
Harold
Redwood City, CA
"My ADU comes down to speed of execution and efficiency, and that has all been there with Cottage."
Harmol
Berkeley, CA
"From our first interaction with Cottage, we were extremely happy. They took us through all the necessary steps and handled everything with the city. We are so happy with how our ADU turned out!"
Marisa
Los Angeles, CA
"My ADU journey was as easy as can be, thanks to the Cottage model and team."
Tom
Los Angeles, CA
"Having built ADUs at our two previous homes, I have to say, working with Cottage has been orders of magnitude easier than doing it ourselves."
Christine & Stanley
Palo Alto, CA
"Cottage was always very calm, professional, friendly, approachable, and kept us in the loop. They made us feel good every step of the way."
Kim
Cottage Homeowner
"I chose Cottage for my ADU because of the team’s ability to meet my personal needs and fit the unit onto my lot. I’m excited to watch my dream be constructed!"
Jean
North Hollywood, CA
"The Cottage team has been fabulous!"
DJ
Cottage Homeowner
"The team at Cottage is excellent! Super professional, knowledgeable and very transparent during the process."
Rebeca
Cottage Homeowner
"The team at Cottage is excellent! Super professional, knowledgeable and very transparent during the process."
Rebeca
Cottage Homeowner
Custom Designed Just For You
Your property, budget, and design preferences are unique – so your ADU should be, too. You’ll work with a dedicated Cottage designer who will craft a custom architectural plan that checks all your boxes.
Custom Designed Just For You
Your property, budget, and design preferences are unique – so your ADU should be, too. You’ll work with a dedicated Cottage designer who will craft a custom architectural plan that checks all your boxes.
It all starts with a floor plan. Select from dozens of Cottage-designed plans as the jumping off point for your custom ADU.
From fine-tuning the layout, to selecting materials, to adding your must-have features, you’ll work with your designer to tailor your ADU design.
We provide a curated list of finishes and appliances for you to customize the interior of your ADU. You’ll have plenty of options to choose from to meet your design and budget goals.
Find Your Floor Plan
Jumpstart the design process with a floor plan from our catalog of proven designs. Varying in size, shape, and layout, each blends space efficiency and comfort. You’ll be able to customize your design to achieve exactly what you want.
Explore Floor Plans
Best-in-Market Value
Best-in-Market Value
No Surprises
At no cost to you, we scope the details up front to keep your project within budget
Preferred Pricing
We've surveyed the market and negotiated competitive contractor pricing for you
Quality for Less
We design for both elegance and efficiency, keeping build costs down
Hassle-Free Process
We guide you through design, permitting, and construction with a vetted contractor. You get to be involved in the fun parts of design, while we handle the paperwork and heavy lifting.
1
Feasibility
Feasibility
Discover what type of ADU is best suited for your property, goals, and budget.
2
Design
Design
Work with a Cottage Designer to develop custom architectural plans and select finishes for your ADU.
3
Permitting
Permitting
We prepare your permit application and work directly with the city to expedite your permits.
4
Construction
Construction
We pair you with a pre-vetted General Contractor and work together to bring your ADU plans to life.
Build With the Best Contractors Near You
We'll pair you with a trusted builder from our network. Each contractor is fully qualified, vetted, and ready to build your ADU.
Hi Christina, I stopped by the site today and things are coming along well - right on schedule. Walls are framed out.
Amazing! Can't wait to see!
We rigorously review contractors for quality, communication, and pricing that's competitive in the market. You save the time and effort needed to vet builders yourself.
We've surveyed hundreds of contractors, and only 5% of applicants have met the quality standards we require to join our builder network. You’ll get a beautiful, well-constructed ADU within budget and on-time.
All General Contractors hold an active contractor's license in good standing, Contractor's Bond, Commercial General liability insurance of $1 million, Worker's Compensation and Employer's Liability insurance of $1 million.
Are you a contractor looking to partner with Cottage?
Local Experts
With your exact location and project details in mind, we match you with a vetted contractor to take on your project. They’ll have extensive experience building near you, which means they know the finer points of ADU construction in your neighborhood.
See Where We Work
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