ADU Design & Planning in Los Gatos, CA

GS Design and Build provides ADU design and planning services for homeowners in San Jose and Menlo Park.

Call (415) 933-2547
  • Site-specific design that accounts for your lot's setbacks, zoning district, and utility connections
  • Reduced risk of plan rejection by aligning drawings to San Jose and Menlo Park local standards from the start
  • Design options across ADU types including detached units, garage conversions, and junior ADUs
  • Exterior design matched to your primary home to meet Menlo Park's aesthetic requirements
  • Clear, buildable scope delivered before construction begins, so there are no surprises on site
  • Increased property value potential through a properly planned and code-compliant additional dwelling unit
Architectural floor plan and site layout drawing for a detached ADU on a single-family residential lot in San Jose, California. The plan shows the proposed unit footprint, setback lines, and connection to the primary dwelling.

Expert ADU Design & Planning in Los Gatos, CA

ADU design and planning in San Jose and Menlo Park requires more than a floor plan. Local zoning rules, setback requirements, and utility connection standards all shape what you can build and where. GS Design and Build works through each of these factors before a single drawing is finalized. We review your lot, confirm what your zoning district allows, and map out a design that fits your property and your goals. Whether you want a detached backyard unit, a garage conversion, or a junior ADU inside your existing home, we build the plan around your specific site. San Jose properties can carry one ADU and one JADU, while Menlo Park requires exterior design to match the main dwelling. Getting those details right at the planning stage protects your project later. We handle site assessment, design development, and plan preparation so you move forward with a clear, buildable scope. Call us to schedule your site review.

What's included

  • Site-specific design that accounts for your lot's setbacks, zoning district, and utility connections
  • Reduced risk of plan rejection by aligning drawings to San Jose and Menlo Park local standards from the start
  • Design options across ADU types including detached units, garage conversions, and junior ADUs
  • Exterior design matched to your primary home to meet Menlo Park's aesthetic requirements
  • Clear, buildable scope delivered before construction begins, so there are no surprises on site
  • Increased property value potential through a properly planned and code-compliant additional dwelling unit
15+ Years Residential Construction Experience
Family-Owned and Operated
ADU Specialists
Full Remodel Services
Multi-City Service Coverage

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ADU Design & Planning FAQ

Common questions about adu design & planning in Los Gatos, CA.

Yes, San Jose allows one ADU and one junior ADU on a single-family property. GS Design and Build can assess your lot and design both units to fit within the applicable size and zoning limits.

Yes, Menlo Park requires the ADU's exterior design, including roof pitch, siding, and color, to match the primary dwelling. We factor those requirements into the design from the beginning.

We plan detached backyard units, attached additions, garage conversions, and junior ADUs for San Jose homeowners. The right type depends on your lot layout, zoning district, and how you plan to use the space.

A detached or attached ADU in Menlo Park can be up to 1,200 square feet, and a junior ADU is capped at 500 square feet. Your lot size and zoning classification may affect what applies to your specific property.

San Jose's local zoning rules control setbacks, height limits, and utility connections, and these vary by property type and district. Starting with a thorough design plan helps avoid costly changes once construction is underway.

Yes, we plan garage conversions to ADUs in Menlo Park, including layout design and exterior compliance with local standards. No replacement parking is required when converting a garage to an ADU under current California rules.

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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

We used GS Design and Build for a room addition in Redwood City and couldn’t be happier. Geri helped us figure out the best layout for our new sunroom and made sure the style blended with the rest of our house. Her crew worked clean and fast, and everything passed inspection the first time. The project wrapped up on schedule and within our budget. The space gets amazing light and has quickly become our favorite part of the house. If you’re in the market for a room addition contractor who truly listens and executes, don’t look any further.

Ronda Richardson Google review · September 2025

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

We live in Redwood City and reached out to GS Design and Build for a second-story room addition. Geri coordinated with our structural engineer and managed the project with confidence. We were impressed with how smoothly everything went. Her communication throughout the process was excellent. The new space has completely transformed our home and given us the extra flexibility we needed. Top-notch room addition contractor and a pleasure to work with.

Deanna Callison Google review · September 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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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