Home renovations in Atherton, on estate-scale lots, built to last a generation.

Hand-vetted contractors for kitchens, bathrooms, ADUs, and whole-home estate renovations across West Atherton, Lindenwood, Lloyden Park, and Atherton Oaks. Matched by a team that works the Peninsula.

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San Mateo County

Renovating in Atherton.

Atherton is estate-scale and low-density in a way few Peninsula towns still are. Most parcels run roughly an acre or larger, and West Atherton lots commonly stretch from one to three acres with long setbacks, mature hedges, and gated entries. These are large custom homes, not tract housing, and the town caps residential floor area ratio at about 0.45 of lot size (rising toward 0.55 when all resident parking goes below grade), which on a one-acre lot allows on the order of 19,000 to 24,000 square feet of buildable area. Lindenwood sits on park-like, roughly one-acre parcels behind gated streets. Lloyden Park is the exception, the one pocket in town with a grid layout, sidewalks, and smaller quarter- to half-acre lots that feel like an upscale extension of Menlo Park.

Our team works the Peninsula, and Atherton renovations tend to run a tier above almost everything around them, both because the homes are large custom estates and because the town's design review adds real scope and time. We place contractors on full-gut estate renovations, primary-suite and gallery-scale additions, detached ADUs on acre-plus lots, and kitchens and baths finished to estate grade. Below-grade work, motor courts, and heritage-tree protection are routine parts of the conversation here, not exceptions.

  • West Atherton
  • Lindenwood
  • Lloyden Park
  • West of Alameda
  • Atherton Oaks
Popular Projects

What homeowners renovate in Atherton.

Realistic 2026 cost ranges based on the projects our contractors are actually pricing in Atherton right now.

Kitchen remodels

$120K – $250K+

Atherton kitchens are finished to estate grade: full-custom cabinetry, stone slabs, professional appliance suites, and often a back kitchen or scullery alongside the main room. Because the homes are large and frequently part of a broader renovation, the kitchen scope usually includes structural openings and rerouted plumbing and electrical. Estate finishes push these projects toward the top of the range.

Bathroom remodels

$70K – $130K+

Primary baths in Atherton estates are full-scope, with stone-clad showers, freestanding tubs, double vanities, heated floors, and dedicated dressing areas. Most projects we see are gut renovations rather than refreshes, frequently tied to a larger primary-suite reconfiguration. The high-end fixture and stone packages typical here sit at the upper end of the Bay Area range.

ADUs (detached & garage conversions)

$280K – $650K+

Atherton recently eased FAR and setback rules for accessory dwelling units while keeping strict design review for primary residences, so the front-end timeline for a second unit on a one-acre-plus lot is materially shorter than it was a few years ago. Acre-scale parcels suit detached new-build ADUs well, whether for staff, guests, or multigenerational living. Atherton is a premium market, so detached units here sit at the higher end of the range.

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Whole-home renovations & additions

$750K – $5M+

The signature Atherton project: a full down-to-studs renovation or a major addition on a large estate, often with below-grade buildout to capture the higher FAR allowance. Scope routinely includes new systems, foundation and seismic upgrades on older homes, arborist-supervised work around heritage oaks, and extensive site, drainage, and landscape coordination. Estate-scale projects here can run from contract to certificate of occupancy in a year-plus.

Local Knowledge

What to know about renovating in Atherton.

Permitting in Atherton

Permits run through the Town of Atherton at Town Hall, 80 Fair Oaks Lane (phone 650-752-0560), where the Building Department handles plan review and inspections (via Interwest Consulting Group) and the Planning Department handles zoning and design review (via M-Group). Atherton layers a Planning design review of building mass, exterior lighting, architectural compatibility, and neighbor impacts on top of standard building plan check. Builder guidance puts design and planning review at roughly 4 to 8 weeks beyond plan review, and total pre-construction for a major estate project commonly at 8 to 14 months once design, arborist review, and engineering are included.

Heritage trees and design review

Atherton's Heritage Tree Ordinance (Municipal Code Chapter 8.10, adopted via Ordinance 646 in October 2020) protects heritage trees, generally oaks with a trunk circumference of 48 inches or more measured at 54 inches above grade. A Heritage Tree Protection and Preservation Plan and an arborist review are required on new construction, remodels, and demolition, and removing a heritage tree needs a permit with possible mitigation. There is no formal local historic district in town, so exterior work is controlled through Planning Department design review and the Planning Commission rather than a historic-preservation body.

Fire zone and seismic notes

Atherton was not included in a Cal Fire High or Very High Fire Hazard Severity Zone on the 2025 state maps, so Chapter 7A ignition-resistant exterior assemblies and defensible-space rules are generally not triggered town-wide the way they are in hill towns nearby. Heritage oaks and redwoods still create local fuel loads, so confirm any specific parcel. The nearest major active fault is the San Andreas, running up the Peninsula to the west, and the Bay region carries roughly a 72 percent chance of a magnitude 6.7 or larger quake within 30 years, so foundation bolting and cripple-wall bracing are common adders on major remodels of older homes.

FAQ

Common questions from Atherton homeowners.

How long does a major renovation take in Atherton?
Longer than most Peninsula towns, because the town layers a Planning design review on top of building plan check. Expect design and planning review to run roughly 4 to 8 weeks beyond standard plan review, and total pre-construction for a major estate project commonly 8 to 14 months once design, arborist and tree-protection review, and engineering are included. Estate-scale work can run a year-plus from contract to certificate of occupancy, so we match these projects with contractors who have carried Atherton design review before.
Will the Heritage Tree Ordinance affect my project?
On most Atherton lots, yes. The Heritage Tree Ordinance (Municipal Code Chapter 8.10) protects heritage trees, generally oaks with a trunk circumference of 48 inches or more measured at 54 inches above grade. New construction, remodels, and demolitions require a Heritage Tree Protection and Preservation Plan and an arborist review, and removing a protected tree needs a permit with possible mitigation. It is a routine cost and schedule item here, so we build it into the plan from the start.
Are ADUs allowed in Atherton?
Yes, and the front end has gotten easier. Atherton eased FAR and setback rules for accessory dwelling units in 2024 and 2025 while keeping strict design review for primary residences, so a second unit on a one-acre-plus lot moves faster than it used to. Statewide law applies as well, so most single-family parcels can add a detached ADU and a junior ADU. Acre-scale lots suit detached new-build units well.
How much does a whole-home renovation cost in Atherton?
Atherton sits at the top of the San Mateo County range. A full down-to-studs estate renovation or major addition typically starts around $750K and runs to $5M or more, depending on size, below-grade buildout, systems, and finish level. Estate-grade kitchens land roughly $120K to $250K-plus and full primary baths roughly $70K to $130K-plus, with most homes here finishing toward the upper end.
What happens after I submit my project?
A matchmaker calls you within one business day, learns about your project and timeline, and hand-picks 2 to 5 contractors from our vetted network who have worked Atherton and the rest of the Peninsula. You meet only the ones you want to. We sit in on bid comparisons and stay involved through the final walkthrough, with project support that runs for three years after that.
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Ready to renovate in Atherton?

Tell us about your project. A matchmaker will call you within one business day and hand-pick 2–5 contractors from our vetted network who have worked in Atherton before.

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Match with a Atherton contractor

  • A call with a matchmaker, usually within one business day
  • 2–5 hand-picked contractors vetted across 9 inspection points
  • Bid review, contract help, and 3-year project support
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