A Los Gatos ADU, Designed and Built by One Team
An accessory dwelling unit is one of the smartest moves a Los Gatos homeowner can make. Whether you want a private suite for aging parents off Blossom Hill Road, a rental that helps carry a Silicon Valley mortgage, or a quiet studio behind a downtown bungalow, an ADU adds real living space and real value. New Key Construction designs and builds these units end to end, so you have one accountable team from the first sketch through the final walkthrough, priced options up front, and a photoreal 3D rendering of your finished ADU before a single permit is pulled.
Los Gatos is not a place where a generic backyard box belongs. The town blends turn-of-the-century downtown cottages, Craftsman and Spanish Revival homes, mid-century ranches on the flats, and contemporary builds climbing into the Santa Cruz foothills. A good ADU here reads as part of the property. We design every unit to sit comfortably with the main house and the street, matching rooflines, materials, and proportions so the result feels intentional and permanent.
Built for Los Gatos Lots and the Town Code
What works on a flat parcel near Vasona Park is rarely what works on a sloped hillside lot above town, and the rules reflect that. In Los Gatos, ADUs and JADUs are reviewed under Division 7 of Chapter 29 of the Town Code, and standard ADU approval is ministerial, meaning a qualifying unit needs a building permit rather than a discretionary planning hearing. We design to those objective standards from day one so your project stays on the fast path instead of getting pulled into avoidable review.
The details matter. Junior ADUs are capped at 500 square feet and must sit within the walls of an existing or proposed single-family home, including an attached garage, while detached and attached ADUs follow their own size, setback, and height limits. Los Gatos requires a permanent kitchen with built-in appliances, and the unit must meet the current California Fire Code for access and water supply, which gets especially important on the narrow, winding streets and hillside parcels where fire access is scrutinized. If your property falls in the hillside areas or carries a Landmark and Historic Preservation overlay in the R-1D downtown zone, additional architectural and site review can apply, and we flag that early rather than letting it surprise you mid-build.
Because the town sits within Santa Clara County, your project also touches county and regional layers for utilities, fees, and inspections. We coordinate those threads so you are not chasing departments. The goal is a plan set that is correct the first time, designed to the standards the reviewers actually use.
One Team, Priced Options, and Renderings Before Permits
The usual ADU path splits the work. You hire a designer, bid the drawings to contractors, then discover the build costs far more than the design implied. New Key Construction removes that gap. We are a design-build firm, which means the people drawing your ADU and the people constructing it are the same team, working from the same budget. You get fixed, priced options up front, so the choices in front of you are real and costed, not loose estimates that drift upward once demolition starts.
Before we pull any permit, you see your ADU as a photoreal 3D rendering. You walk the space, test the kitchen layout, check how morning light falls in the bedroom, and confirm how the exterior meets your existing home, all while changes are still inexpensive. From there, our white-glove project management carries the permit submittal, scheduling, trades, and inspections, with a single point of contact at every stage. The result is an ADU that looks like it has always belonged on your Los Gatos lot, without the finger-pointing and budget surprises that make so many homeowners dread the process.
Frequently Asked Questions
Do I need a planning hearing to build an ADU in Los Gatos?
For a standard qualifying ADU or JADU, no. Los Gatos reviews these ministerially, so you need a building permit and any related permits rather than a discretionary planning permit with public notice or a hearing. Hillside properties and homes with a historic preservation overlay can trigger additional architectural and site review, which we identify before design begins.
How big can my Los Gatos ADU be?
Junior ADUs are limited to 500 square feet and must be contained within an existing or proposed single-family home, including an attached garage. Detached and attached ADUs follow their own size, setback, and height standards under the Town Code. We design to the maximum that genuinely fits your lot and budget.
How long does an ADU project take from start to finish?
Timelines vary with lot conditions, site access, and town review, but most homeowners should plan for several months of design and permitting followed by construction. Hillside parcels and historic-overlay properties typically take longer because of added review. Our up-front design and accurate plan sets are built to reduce permit back-and-forth and keep the schedule predictable.
What does an ADU cost in Los Gatos?
Cost depends on size, site grading, foundation work, finishes, and whether the unit is attached, detached, or a garage conversion. Rather than quote a number we cannot stand behind, we give you fixed, priced options up front. You approve a costed design, not a moving target.
Will the ADU match my existing home?
Yes. We design every unit to read as part of your property, coordinating rooflines, materials, windows, and proportions with the main house and the surrounding street. You confirm all of it through a photoreal 3D rendering before any permit is pulled.
Ready to see your Los Gatos ADU before you build it? Let New Key Construction show you a costed design and photoreal rendering up front, then handle design and construction as one team. Reach out to start the conversation.
