Roofing Contractor in San Mateo County, CA

Three roofing regions in one county: estates, bay fill and the coast

Housing here changes sharply over short distances, and roof problems change with it.

The I-280 estate belt

Atherton, Woodside, Portola Valley and Hillsborough hold large homes under heavy oak canopy, often roofed in slate, clay tile or wood shake with copper details. The flashings and underlayment usually wear out long before the slate or tile.

Bayside planned communities

Foster City and Redwood Shores were built on filled bay marshland in the 1960s and 70s: townhome blocks, HOA roofs, low-slope decks and steady wind off the water.

Older bayside cities and the Coastside

San Mateo, Burlingame, San Carlos, Belmont and Millbrae mix pre-war and mid-century homes, from 1920s houses under dense street trees to 1950s-60s hillside tracts on steep lots. Over Highway 92, Half Moon Bay's roofs face salt air, fog and wind-driven rain.

San Mateo County cities and towns we serve

Split from San Francisco County in 1856, San Mateo County counted 764,442 residents in the 2020 Census across 20 incorporated cities and towns. Pages for the 15 we cover give drive time, roof conditions and the permit office.

• Redwood City: Mount Carmel's older homes and Redwood Shores townhomes on bay fill.
• Menlo Park: Craftsman and mid-century houses under oaks in the Willows and Allied Arts.
• San Carlos: hillside view homes above 1940s-60s flatland houses.
• East Palo Alto: post-war homes, apartment roofs and bayside drainage.
• Belmont: steep-lot hillside homes where access sets the plan.
• North Fair Oaks: unincorporated homes and duplexes permitted by the county.
• Atherton: slate, clay tile and copper on large estates.
• Woodside: equestrian properties and Class A reroofs toward Skyline Boulevard.
• Portola Valley: wooded lots on the San Andreas Fault.
• San Mateo: pre-war neighborhoods and foggy western-hill tracts.
• Foster City: lagoon homes and HOA townhome roofs.
• Burlingame: 1920s-40s homes under heavy street-tree canopy.
• Millbrae: 1950s hillside homes in the fog belt.
• Half Moon Bay: Coastside roofs in salt air and wind-driven rain.
• Hillsborough: residential estates subject to design review.

Faults, fire maps, fog and flood zones across the Peninsula

A few county-wide conditions shape our advice from one end of San Mateo County to the other:

• San Andreas Fault: USGS maps it running northwest through Portola Valley, Woodside and the Crystal Springs Reservoir valley. Older masonry chimneys and heavy tile deserve a closer look on homes nearby.
• Wildfire zones: wooded slopes toward Skyline Boulevard fall inside mapped CAL FIRE hazard zones, where California's wildland-urban interface code expects Class A roofs and ember-resistant vents.
• Coastal fog: fog crossing the ridge keeps north slopes damp in San Mateo, Millbrae and Hillsborough, feeding moss and attic condensation.
• Bayside flooding: parts of East Palo Alto and other shoreline areas are mapped in FEMA flood zones, which makes gutter and downspout discharge more important.
• Winter storms: nearly all rain falls between November and March, and atmospheric-river storms bring wind, falling limbs and leaks in a short window.

Which permit office handles your San Mateo County roof

Roofing permits in the county are issued by the city or town where the property sits: Redwood City's Building Division, the Town of Atherton, the City of Half Moon Bay and so on. Unincorporated areas, including North Fair Oaks, Emerald Lake Hills and Ladera, fall to the county's Planning and Building Department, even when the mailing address names a nearby city. Some towns add a step: Hillsborough, Woodside and Portola Valley review many exterior changes for design, and Half Moon Bay sits in the California Coastal Zone. Ask the relevant office before choosing a new material, and we'll file the permit once the path is clear.

Scheduling a Peninsula visit from our Campbell shop

1. You call or send the form; we place your address on a day our crews are already working in that part of the county.
2. The estimator inspects the roof, flashings, gutters and attic where reachable, and photographs every finding, sometimes with video.
3. You receive a written, itemized estimate. Material warranties come from the manufacturer under its terms; our workmanship terms are written on the estimate.
4. We file the permit with the right city, town or county office and schedule its inspections.
5. Crews clean up at the end of each day and haul debris away, with extra care on steep lots and shared HOA grounds.

Honest proof for a county at the edge of our map

Most of our work, and nearly all of the 64 Google reviews on our profile as of May 2026, comes from Campbell and the South Bay. We don't have San Mateo County project photos to publish, and we won't borrow stories that aren't ours. What we do bring: a family-run team, free written estimates, photo documentation, daily cleanup and help documenting storm damage with your insurer. We also take on small jobs, from a single flashing piece to a skylight reseal, not only full replacements. For homes near Palo Alto and Stanford, our Santa Clara County roofing coverage is closer still.