Home Addition Construction in Los Gatos, CA

GS Design and Build handles home addition construction in Menlo Park and across the Bay Area Peninsula.

Call (415) 933-2547
  • More living space sized and designed to fit your specific lot and zoning limits
  • A finished addition that ties into your home's existing roofline, foundation, and exterior materials
  • Full coordination with Menlo Park's Building and Planning divisions so inspections move forward without gaps
  • Electrical, plumbing, and mechanical systems extended into the new space to current California code
  • Added square footage that strengthens your home's value in a competitive Peninsula real estate market
  • A single point of contact from initial design through final walkthrough, so nothing falls through the cracks
A newly completed two-story home addition on a single-family residence in Menlo Park, California, with exterior siding and roofline matched to the original structure. The addition includes new windows and a finished exterior that blends with the existing home.

Expert Home Addition Construction in Los Gatos, CA

GS Design and Build plans and builds home additions for homeowners in Menlo Park and the surrounding Peninsula. Whether you need a primary suite, a family room expansion, or a second-story addition, we manage the project from design through final inspection. Menlo Park's residential zoning sets specific rules on setbacks, lot coverage, floor area ratio, and building height that shape what can be built on your property. Each parcel is evaluated on its own, so we review your lot's specific zoning classification and constraints before any plans are drawn. We coordinate with the city's Building and Planning divisions so the work moves forward correctly. Our goal is to give you more usable space that fits your home's existing structure and your family's real needs. We serve homeowners across Menlo Park, Palo Alto, Atherton, San Mateo, Redwood City, and the broader Bay Area Peninsula. Contact us to talk through your addition and get the process started.

What's included

  • More living space sized and designed to fit your specific lot and zoning limits
  • A finished addition that ties into your home's existing roofline, foundation, and exterior materials
  • Full coordination with Menlo Park's Building and Planning divisions so inspections move forward without gaps
  • Electrical, plumbing, and mechanical systems extended into the new space to current California code
  • Added square footage that strengthens your home's value in a competitive Peninsula real estate market
  • A single point of contact from initial design through final walkthrough, so nothing falls through the cracks
15+ Years Residential Construction Experience
Family-Owned and Operated
ADU Specialists
Full Remodel Services
Multi-City Service Coverage

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Home Addition Construction FAQ

Common questions about home addition construction in Los Gatos, CA.

Your lot's zoning classification, setback requirements, floor area ratio, and lot coverage limits all determine what can be built. We review those factors for your specific parcel before any design work begins.

We build primary suite additions, family room expansions, second-story additions, and kitchen additions for homeowners across Menlo Park and the Peninsula. Each project is designed to connect cleanly with your home's existing structure.

Yes, we design additions to match your home's existing roofline, exterior materials, and overall style. A seamless exterior finish protects both the look of your home and its resale value.

In most cases, yes, especially when the addition is built on an exterior wall or in a section separate from your main living areas. We keep the active construction zone clearly separated from the spaces you use daily.

Yes, we manage both the design and the build under one roof so San Mateo homeowners work with one team from start to finish. That single-team approach reduces handoff problems and keeps the project on track.

Property values across the Peninsula are high, and moving to a larger home often costs far more than expanding the one you already own. A well-planned addition gives your family the space it needs while keeping you in the neighborhood you chose.

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What Santa Clara County homeowners say.

4.9
52 Google reviews

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From our very first appointment with Gershon, we felt confident we were in excellent hands. He listened carefully to what we wanted, offered thoughtful design suggestions, and walked us through the process and timeline in a clear, transparent way. Every step—from initial design and planning to the finishing touches—was handled smoothly, with consistent updates so we always knew what was happening next. The crew that worked on our home was hard working, professional, and very knowledgeable. They arrived on time, respected our home, and kept the work area as tidy as possible, which we really appreciated. The finished kitchen looks fantastic and functions even better than we hoped and the quality of the workmanship really stands out. Friends and family have already commented on how beautiful and well thought-out the space is. We would not hesitate to hire GS Design & Build again for future projects. If you’re looking for a top-tier contractor for your home remodeling, GS Design & Build are an outstanding choice.

Charles Decker, DC, ACN Google review · June 2026

GS Design and build did an amazing job uplifting my garage. Gheri was the most responsive of the contractors I got quotes from and he was very quick to respond with a reasonable estimate. He was always reachable and ensured the team was very punctual. His crew did a great job completing the job and handling surprises. I didn’t have to contact Gheri for anything during the job. The final work quality was great and my garage looks great! I will highly recommend GS Design and Build for your home improvements Update: i did a bathroom remodel with them 6 months after the garage upgrade and it was amazing! The team has remained consistent with their quality and workmanship!

viswanathan vaidyanathan Google review · June 2026

Just got my home addition done! GS design helped us build a new bathroom and a new master bed in new construction. Everything was fully licensed and Geri managed everything at his end. I found Geri on Nextdoor and was nervous before signing him up but to my surprise, I couldn’t have asked for more! He has a lovely team of people who specialize in what they do. Geri cared for me and made sure I am satisfied at each step. He gave me a good run down of what he plans to do in the coming week which was very satisfying. Geri’s rates were also very competitive and he was reasonable when the work order changed. What I liked about Geri a lot is also that his interior designing skills are also very strong so he guided us when the size of the window was off or in making lovely choices of the flooring. You can trust Geri blindly and go with him. You will not regret it. Thanks Geri, for all the great work.

Vedant Dhandhania Google review · April 2022

I hired GS Design and Build for a full remodel on our home in Santa Clara and was blown away by the results. Geri provided a detailed estimate and timeline upfront, and everything stayed on track. Her design sense helped transform a dated layout into an open, modern living space. Her crew was friendly, tidy, and very skilled. They even handled a few surprises during demo without adding delays. It’s hard to find a full remodel contractor who keeps every promise, but Geri does. I wouldn’t hesitate to recommend her for any large-scale renovation project. Truly five-star work.

Patricia R Google review · September 2025

GS Design and Build completed a room addition for us in Foster City, and we’re beyond happy with the outcome. We needed more space for our growing family, and Geri made the entire process seamless. She coordinated with the city, helped with layout ideas, and oversaw every detail. The construction crew was clean, courteous, and clearly experienced. The addition flows beautifully with the original home and feels like it was always there. If you’re looking for a reliable room addition contractor who cares about getting it right, this is the team to hire. Great experience from start to finish.

Corrie Google review · August 2025

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Hours

  • Monday 8:00 AM - 7:00 PM
  • Tuesday 8:00 AM - 7:00 PM
  • Wednesday 8:00 AM - 7:00 PM
  • Thursday 8:00 AM - 7:00 PM
  • Friday 8:00 AM - 7:00 PM
  • Saturday Closed
  • Sunday Closed

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Talk with GS Design and Build about your goals and get a clear, no-pressure estimate.

15+ Years Residential Construction Experience
Family-Owned and Operated
ADU Specialists
Full Remodel Services
Multi-City Service Coverage
Call (415) 933-2547

Mon–Fri 8:00 AM - 7:00 PM · Sat Closed · Responses within 2 hrs

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