Custom ADUs Made Simple

Custom ADUs Made Simple

Custom ADUs Made Simple

Why Homeowners Choose Cottage

House
Services
Heart
Hammer

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.

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

3

Permitting

4

Construction

Bang For Your Buck

Our contractor and supplier partnerships unlock scaled discounts that you wouldn’t get independently. Get a custom ADU for the price of a prefab.

ADU Estimate

CottagePrefab ADUsDesign-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
$20,000
upcharge
Included
Construction
Included
$190,000
$230,000
Total
$195,000
$227,500
$262,000

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.

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Vetted by industry experts

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Licensed, bonded, and insured

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1 Year Workmanship Guarantee

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HammerAre you a contractor looking to partner with Cottage?Learn more
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Cottage really helps make the ADU process accessible, approachable, and less intimidating.

Harold

Redwood City, CA

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