Custom ADUs Made Simple
Custom ADUs Made Simple
Custom ADUs Made Simple
Why Homeowners Choose Cottage
Custom Designed Just For You
Unlike prefab ADUs, we offer custom designs to match your unique space, budget and needs.
Custom Designed Just For You
Unlike prefab ADUs, we offer custom designs to match your unique space, budget and needs.
Recently we’ve designed and built
This Spanish Bungalow ADU is The California Backyard Dream
Custom Cottage Designed, Permitted, and Built in < 10 Months
2 Bedroom San Jose Detached Backyard Cottage
Brand New Guest Cottage in Midtown Palo Alto for Local Residents
468 Sq Ft, 1 Bedroom ADU Perfect for Your Backyard Space
Custom Craftsman ADU for Multi-Generational Family in Los Altos
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.
Feasibility
Design
Permitting
Construction
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.
Bang For Your Buck
Our contractor and supplier partnerships unlock scaled discounts that you wouldn’t get independently. Get a custom, lasting ADU for less than the price of prefab.
Cottage's ADU Estimates are All-Inclusive
| Cottage | Prefab ADUs | Design-Bid-Build | |
|---|---|---|---|
Design | Included | $2,500 upcharge | $10,000 |
Engineering | Included | Included | $7,000 |
Site Prep | Included | $5,000 upcharge | $5,000 |
Utility Connections | Included | $10,000 upcharge | $10,000 |
Foundation | Included | $10,000 upcharge | Included |
Construction | Included | $279,000 | $250,000 |
Total | $250,000 | $306,500 | $282,000 |
Build with a Vetted Pro
We'll pair you with a licensed contractor from our network of trusted partners. Each builder is fully qualified, vetted, and prepared to deliver your ADU.
Vetted by industry experts
Licensed, bonded, and insured
1 Year Workmanship Guarantee
