Second-Story Addition on Jefferson Ave, Redwood City
Jennifer M., Jefferson Ave, Redwood City — a second-story addition completed in June 2026.
Location
Redwood City, California
Homeowner
Jennifer M.
Timeline
Completed June 2026
Investment
$550,000–$600,000
The brief
Jennifer M. added a second story on Jefferson Ave in Redwood City. The project demolished the existing garage and added a new staircase, a primary bedroom suite and an office upstairs, with a new primary bathroom, new second-zone HVAC, new electrical circuits and new plumbing for the bathroom, eight new-construction windows, and a full re-roof with a new deck.
Scope of work
- Demolition of the existing garage and a new staircase
- Second-story framing and roof framing
- Foundation reinforcement and seismic retrofit
- New primary bedroom suite and office upstairs
- Primary bathroom with a double-sink vanity, tile shower with glass door, heater fan, can lights and sconces
- New second-zone HVAC, new electrical circuits and new plumbing for the bathroom
- 8 new-construction windows
- Re-roofing with a new deck
Project gallery
Frequently asked questions
What did the Jefferson Ave second-story addition include?
The project added a second story on Jefferson Ave in Redwood City, with a primary bedroom suite and an office upstairs, a primary bathroom with a double-sink vanity and tile shower, a new staircase, foundation reinforcement and seismic retrofit, a new second-zone HVAC system, new electrical circuits and plumbing, eight new-construction windows, and a full re-roof with a new deck.
When was the Jefferson Ave addition completed, and what was the investment?
The addition was completed in June 2026. The investment is shown as a range, $550,000–$600,000.
Explore more
Planning a similar project? Explore our room additions & ADU services, browse more case studies, or see remodeling in Alameda.
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