Servicing San Diego, LA, & Bay Area
Watch our free ADU webinar
How it WorksFloor PlansFeatured ProjectsCareersAbout
Resources
Our ADU Guide
ADU Regulations
For Partners
For Contractors
For Designers
Sign In
Homeowners
Contractors
Custom ADUs Made Simple
Why Homeowners Choose Cottage
Custom Designed
Custom Designed
Zero Hassle Process
Zero Hassle
Best-In-Market Value
Best Value
Vetted Professionals
Vetted Pros
Custom Designed Just For You
Unlike prefab ADUs, we offer custom designs to match your unique space, budget and needs.
Ample natural light
Space to entertain
Indoor-outdoor living
$200k-$250k budget
Recently we've designed and built
Flex Space
Rental Income
In-Law Unit
Office / Hobby Space
This Spanish Bungalow ADU is The California Backyard Dream
Rental Income
Flex Space
San Diego Surf Casita - Rental Income ADU with California Vibes
Flex Space
Rental Income
In-Law Unit
Custom Cottage Designed, Permitted, and Built in < 10 Months
Flex Space
Rental Income
In-Law Unit
2 Bedroom San Jose Detached Backyard Cottage
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
In-Law Unit
Flex Space
Custom Craftsman ADU for Multi-Generational Family
Flex Space
Rental Income
Efficient and Open 2 Bedroom Accessory Dwelling Unit in Castro Valley
Hassle-Free Process
We handle your project from design to permitting to construction with a vetted contractor. We involve you in the fun parts of design while saving you 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.
Choose from dozens of floor plans
Get started with one of our team’s favorite floor plans. We’ve hand selected these plans for their smart usage of space and value-engineered details. By starting with a Cottage Favorite floor plan, you’ll be able to move more quickly through design and permitting, saving you both time and money.
Find Your Floor Plan
Best Value ADUs, Transparent Pricing
Unlock scaled contractor discounts you won't get independently
Avoid hidden fees of prefab & modular construction
Build with a Local Vetted Pro
We'll pair you with a licensed contractor from our trusted network across San Diego, Los Angeles, and the San Francisco Bay Area. Each builder 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!
Before partnering with a contractor, our team visits past projects, reviews experience online and checks references.
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.
All ADUs are covered by a 30 day no-questions-asked callback period and a 1 year warranty on workmanship.
Are you a contractor looking to partner with Cottage?
Local Contractors
We set you up with a vetted ADU contractor near you, which means that they're easily within reach and know the finer points of building in your neighborhood.
See Where We Work
"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
Redwood City, CA
"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
"Cottage really helps make the ADU process accessible, approachable, and less intimidating."
Harold
Redwood City, CA
"My ADU all comes down to speed of execution and efficiency, and that has all been there with Cottage."
Harmol
Berkeley, CA
"This ADU is important because it keeps the family together. Family has been the most important thing for us."
Jill & Joan
Santa Clara, 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
Redwood City, CA
"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
