Servicing San Diego, LA, & Bay Area
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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.
Kitchen
Ample natural light
Space to entertain
Indoor-outdoor living
$200k-$250k budget

Recently we've designed and built

This Spanish Bungalow ADU is The California Backyard Dream
Flex Space
Rental Income
In-Law Unit
Office / Hobby Space
This Spanish Bungalow ADU is The California Backyard Dream
San Diego Surf Casita - Rental Income ADU with California Vibes
Rental Income
Flex Space
San Diego Surf Casita - Rental Income ADU with California Vibes
Custom Cottage Designed, Permitted, and Built in < 10 Months
Flex Space
Rental Income
In-Law Unit
Custom Cottage Designed, Permitted, and Built in < 10 Months
2 Bedroom San Jose Detached Backyard Cottage
Flex Space
Rental Income
In-Law Unit
2 Bedroom San Jose Detached Backyard Cottage
Brand New Guest Cottage in Midtown Palo Alto for Local Residents
Rental Income
Brand New Guest Cottage in Midtown Palo Alto for Local Residents
468 Sq Ft, 1 Bedroom ADU Perfect for Your Backyard Space
Flex Space
In-Law Unit
Rental Income
Office / Hobby Space
468 Sq Ft, 1 Bedroom ADU Perfect for Your Backyard Space
Custom Craftsman ADU for Multi-Generational Family
In-Law Unit
Flex Space
Custom Craftsman ADU for Multi-Generational Family
Efficient and Open 2 Bedroom Accessory Dwelling Unit in Castro Valley
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.
Cottage floor plans

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
Best Value ADUs, Transparent Pricing

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.
Phone image of stick built construction
Text conversation image
Hi Christina, I stopped by the site today and things are coming along well - right on schedule. Walls are framed out.
Text conversation image
Amazing! Can't wait to see!

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
Local Contractors
"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
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