Additions
Additions & ADUs That Feel Original to the House
Second-story additions, ADUs, and extensions that give you the space you need without leaving the neighborhood you love.
Moving isn't always the answer. A lot of Peninsula homeowners just need more space on the lot they already have. We build second-story additions, ADUs, and home extensions that are sized and detailed to feel like they were part of the original house.
Every addition project starts with a feasibility review of your lot and current zoning, so you know what's actually buildable before you fall in love with a design. From there we manage structural engineering, permitting, and construction through final inspection.
01
Feasibility & Zoning Review
02
Design & Structural Engineering
03
Permitting & Construction
04
Final Inspection & Walkthrough
Recent Work
Addition & ADU Projects
FAQ
Common Questions
Is an ADU or a second-story addition better for adding space?+
It depends on your goals. An ADU adds a separate, income-generating unit and typically has a more streamlined permitting path under California law. A second-story addition adds space to the main house itself, which usually makes more sense if you need bedrooms directly connected to your existing living space.
How long does ADU permitting take?+
California law requires ministerial (non-discretionary) review for compliant ADU applications, which has made timelines far more predictable than a few years ago, though exact turnaround still varies by city.
Will my addition match the existing house?+
Yes, we match siding, rooflines, and trim details so additions read as original to the house rather than an obvious add-on, both for curb appeal and resale value.
Do I need to move out during an addition?+
For most additions, no. We can sequence construction to keep the existing home livable, with the main disruption limited to the connection points between old and new construction.