One Team for Estate-Scale Work on the Peninsula
Atherton is unlike anywhere else on the Peninsula, and a renovation here has to respect that. With a one-acre minimum lot size, residential-only zoning, and some of the deepest setbacks in San Mateo County, every project sits on land that the Town protects carefully. New Key Construction works as a single design-build team for Atherton homeowners, which means interior design and construction live under one roof. You get priced options up front, photoreal 3D renderings before any permit is pulled, and white-glove project management from the first concept through final walkthrough.
That structure matters more in Atherton than in most towns. You are working inside an estate context where neighborhood character, heritage trees, and privacy from adjacent properties all factor into what the Town will approve. When the people drawing the plans are the same people building them, there is no gap between the rendering and the result.
Built for Atherton's Architecture and Its Rules
Atherton's housing stock runs the full range. West Atherton leans toward mid-century ranch homes and newer contemporary estates, with low-pitched roofs, broad glazing, and open plans. Central Atherton carries more Mediterranean and traditional estate work, with stucco, tile roofs, and detailed ironwork. A design-build approach lets us honor whichever language your home speaks rather than imposing a generic look, detailing interiors that read as original to the house and then building them to match.
The regulatory side is where one team earns its keep. The Town of Atherton requires design review for new construction and significant exterior modifications, and that review weighs architectural compatibility with the neighborhood along with view and privacy impacts on neighbors. Design review can add several weeks beyond standard plan check, and plan review for larger residential work commonly runs in the range of six to ten weeks. We plan for that timeline from day one instead of discovering it midway through.
The heritage tree ordinance is among the strictest on the Peninsula. Oaks, redwoods, and other significant specimens are protected, and work inside a root protection zone can require an arborist report and mitigation. We map protected trees early and design around their root zones, and the same discipline applies to the R-1A development standards, with their generous front, side, and rear setbacks and the building height limit, all of which shape what is buildable on your lot.
Priced Options and 3D Renderings Before Permits
Most of the risk in a high-end Atherton renovation shows up before a single wall comes down. It hides in vague allowances, in scope that drifts, and in a design that looks different once it is real. Our process removes that risk early.
We start with a design phase that produces photoreal 3D renderings of your actual spaces, so you walk through the kitchen, the primary bath, or the new great room before we ever submit to the Town. Materials, millwork, stone, fixtures, and lighting are all chosen and shown, not left to a future decision. Alongside the design, you receive priced options up front, so you see what each direction costs while you can still adjust rather than reacting to change orders later.
Only once the design is settled and the numbers are agreed do we take drawings into Atherton's permit and design review process. Because the same firm designed the project and will build it, the permit set reflects what we can actually construct on your site, within the setbacks, height limit, and tree constraints specific to your parcel. White-glove project management carries it the rest of the way, with one point of contact, a clear schedule, and protection of your home and grounds throughout the build.
Frequently Asked Questions
Do I need design review for a remodel in Atherton?
The Town of Atherton requires design review for new construction and significant exterior modifications, and it weighs neighborhood compatibility along with view and privacy impacts on adjacent properties. Interior-only work often falls under standard building permits, while anything touching the exterior or footprint usually triggers review. We assess which path your project falls into early and plan the schedule around it.
How long does permitting take for an Atherton project?
Plan review for larger residential work in Atherton commonly runs about six to ten weeks, and design review can add several weeks on top of that. Heritage tree documentation and arborist reports can extend it further when protected specimens are near the work. We build these timelines into the schedule from the start so the permit phase does not surprise you.
How do the heritage tree rules affect my renovation?
Atherton has one of the strictest heritage tree ordinances on the Peninsula, protecting oaks, redwoods, and other significant trees. Work inside a root protection zone, or any removal, can require an arborist report and mitigation plantings. We map protected trees before design is finalized and shape the project around their root zones to avoid costly delays.
Why choose design-build instead of hiring an architect and contractor separately?
With design-build, the team that designs your home is the team that builds it, so there is no gap between the drawings and the field and no conflict between two firms. You get priced options up front and photoreal 3D renderings before permits, which means fewer change orders and a result that matches what you approved.
Can you match my home's existing architectural style?
Yes. Atherton ranges from mid-century ranches in the west to Mediterranean and traditional estates in the central neighborhoods, and we detail interiors to read as original to your specific home. We design within your home's language rather than imposing a generic look, then build to match the renderings exactly.
If you are planning a renovation or interior project on your Atherton estate, New Key Construction will show you priced options and photoreal 3D renderings before any permit is pulled. Reach out to see your home before the work begins.




