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.
ADU Construction & Build in Los Gatos, CA
GS Design and Build handles full ADU construction for San Jose and Menlo Park homeowners ready to add living space.
- Adds a fully code-compliant living unit to your existing San Jose or Menlo Park lot
- Increases property market value by expanding usable square footage
- Creates a dedicated space for family members without requiring a separate property purchase
- Generates long-term rental income on land you already own
- Detached units and garage conversions both handled under one contractor relationship
- Design and build scope managed together, reducing coordination gaps between trades
Expert ADU Construction & Build in Los Gatos, CA
GS Design and Build provides ADU construction and build services for homeowners in San Jose and Menlo Park. We manage the full scope of your project, from site evaluation and design to structural framing, electrical, plumbing, and final finishes. Whether you want a detached backyard unit, a garage conversion, or a junior ADU within your existing footprint, we build to California Building Standards Code and local requirements. San Jose is one of the most active ADU markets in California, with permitted ADU projects rising sharply year over year. Menlo Park single-family lots can support both a standard ADU and a junior ADU on the same property, giving you real options for how you use your land. We help you understand what your lot allows before any work begins. Our goal is a finished unit that adds livable square footage, supports multigenerational living, or generates long-term rental income. Call us to talk through your property and get a clear plan in place.
What's included
- Adds a fully code-compliant living unit to your existing San Jose or Menlo Park lot
- Increases property market value by expanding usable square footage
- Creates a dedicated space for family members without requiring a separate property purchase
- Generates long-term rental income on land you already own
- Detached units and garage conversions both handled under one contractor relationship
- Design and build scope managed together, reducing coordination gaps between trades
More ADU Construction Services
Need this service?
Get a clear roof assessment before you commit.
ADU Construction & Build FAQ
Common questions about adu construction & build in Los Gatos, CA.
Yes, most single-family lots in San Jose are eligible for at least one ADU and one junior ADU. GS Design and Build reviews your specific lot and zoning before any work begins.
We build detached ADUs, attached ADUs, and garage conversions in Menlo Park. Each type has different setback and size rules, and we walk you through what fits your property.
No, owner-occupancy is not required for a standard ADU in San Jose under current state law. A junior ADU does require the owner to live on the property.
Detached ADUs in Menlo Park can reach up to 1,000 square feet with a minimum 4-foot side and rear setback on qualifying builds. We confirm exact size limits for your lot before design starts.
No replacement parking is required when you convert a garage to an ADU in San Jose. GS Design and Build handles the full conversion scope, including all required utility work.
Yes, you can rent your ADU in Menlo Park for terms of 30 days or longer. Short-term rentals are not allowed for units approved after January 1, 2020 under current rules.
Still have questions?
Call us directly. Real answers, no scripts.
What Santa Clara County homeowners say.
Worked with us?
Leave a ReviewProudly Based in Campbell, CA
Stop by, call, or book online — we're always nearby when you need us.
Phone
(415) 933-2547Hours
- 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
Real Work. Real Results.
Every photo is from an actual project we completed — no stock images, no renderings.
Ready to start your project?
Talk with GS Design and Build about your goals and get a clear, no-pressure estimate.
Mon–Fri 8:00 AM - 7:00 PM · Sat Closed · Responses within 2 hrs



