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Room Additions & ADUs

Expand Your Home & Living Space in Marin County.

Turnkey ADU & Expansion Solutions

Whether you want to build a secondary cottage for family, generate passive rental income, or add a primary suite, Yee Built provides comprehensive general contracting from foundation to roofline.

Detached Cottages

Standalone secondary units complete with kitchen, bath, and separate utilities.

Garage Conversions

Transform existing square footage into rentable studio or office space.

Primary Suites & Extensions

Seamless structural extensions that match original architecture.

Permitting & Utilities

Full jurisdiction compliance, environmental reviews, and site tie-ins.

Yee Built ADU Addition
San Rafael ADU Before

Before

The client had a vision—a self-contained space for his creative work and a truly comfortable, private haven for guests.

San Rafael ADU After

After

We crafted a custom extension of the main home. Featuring vaulted ceilings, this ADU is now the tranquil sanctuary of his dreams.

San Rafael ADU Project

This was more than just adding square footage; it was about realizing the client’s ultimate vision for his property. We replaced wasted space with a premium, multi-functional asset that elevates his lifestyle and delivers a significant return on investment.

Planning a Home Remodel? Let's Talk About Your Vision.

Schedule a Free Home Estimate Today!

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Phone or Text: (415) 246-1148

FAQ

An ADU (Accessory Dwelling Unit) is a secondary housing unit on a single-family or multi-family residential lot. Recent California state laws have made it much easier to build detached cottages, attached mother-in-law units, or garage conversions across Marin and Sonoma counties.