Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
After
Before
AfterFast, Reliable Roof Inspection Across San Mateo
A roof inspection in San Mateo runs between $150 and $400 for most homes. Larger properties with acreage, outbuildings, or complex low-slope sections land on the higher end. If you’re dealing with a leak, storm damage, or a moss problem that’s gotten away from you, call Brennan Roofing at (361) 320-9467 and we’ll get you on the schedule.
We know San Mateo roofing differently than a company that just drops a ladder in your driveway. The fog that rolls over the hills every morning does real things to a roof deck. The heritage oaks that make neighborhoods like Baywood and Aragon beautiful also drop debris that holds moisture against shingles. A proper inspection here means reading those conditions, not just checking boxes. Our crew serves San Mateo directly, and our Roof Inspection team has walked enough of these roofs to know what the marine layer leaves behind.
Why Brennan Roofing Is San Mateo’s Preferred Roof Inspection Company
Homeowners in San Mateo call us because we show up when we say we will, and we put numbers on paper before any work starts. That’s The Garrison Standard. Every technician who climbs onto your roof is background-checked and in uniform, so you know exactly who’s up there. Travis Oakley built this operation around a simple idea: a roofer’s word should mean something, and the price should not move at the door.
We hear the same story from San Mateo customers again and again: a previous roofer no-showed, or found “unexpected damage” once the tear-off started and jacked the price. We don’t operate that way. Our inspection reports are detailed and honest, and they include the exact scope and cost of any repair we recommend, in writing, before you approve a dollar. No surprises, no pressure.
Dispatch and scheduling are coordinated from the brand’s San Francisco Bay Area office, but our crews are local to San Mateo and move fast. Phones ring to a live person 24/7, not a voicemail tree. When you call about a sagging ceiling or a damp wall in the Shoreview area, you’ll talk to a human who can get a tech dispatched to your street.
Hail Damage Roof in San Mateo
Hail damage roof claims in San Mateo are less common than in the Central Valley, but when a storm pushes off the Pacific, it can bring hail that bruises shingles and cracks tiles on exposed ridges. Hail damage roof repairs start around $450 for isolated shingle replacement and can exceed $2,800 when multiple planes, flashing, and underlayment are involved. If you suspect hail hit your roof, the inspection documents the damage with photos and moisture readings so you have what you need for an insurance claim.
Displaced Granules and Bruised Mats
Hail doesn’t always punch a visible hole. It knocks granules off the shingle surface and bruises the fiberglass mat underneath. That bruise becomes a failure point a year or two down the road. Our inspectors look for these on every slope, not just the ones facing the storm.
Flashing and Vent Damage
Hail bends aluminum flashing around chimneys, skylights, and pipe penetrations. Even a small dent can break the seal and let water in. We check every penetration on the roof, not just the field shingles, because that’s where hail damage hides.
Roof Estimate in San Mateo
A roof estimate in San Mateo from Brennan Roofing is a written, line-by-line price you can hold in your hand before any work begins. A full roof replacement estimate in San Mateo typically ranges from $14,000 to $32,000 depending on size, material, tear-off complexity, and slope. Repair estimates run lower. We scope the job on site and put the number on paper that same visit. For acreage properties with long hauls and outbuildings, we include access and disposal costs in the estimate so there’s no second conversation about “unforeseen” charges later.
Estimates That Account for Moisture
San Mateo’s fog means decking needs a moisture check before you quote a re-roof. Soft sheathing changes the scope. We test it during the estimate so the price you sign is the price you pay, not a starting point.
Written Price Before Work Starts
The Garrison Standard means the estimate is fixed. If we find decking rot under the old shingles during tear-off, we discuss it with you and adjust in writing before proceeding. No work starts until you approve the number on paper.
Trusted Brands We Service in San Mateo
We install and inspect roofing systems from GAF, CertainTeed, and Owens Corning, among others. For San Mateo’s low-slope mid-century homes, we also work with Atlas and Boral membrane systems that hold up better under constant fog moisture. Having these materials available from local supply houses off Highway 101 means faster turnaround when a repair is urgent. We stock common flashing and underlayment profiles for older San Mateo homes, including the undersized drip edge we find on 1950s ranches, so a simple repair doesn’t turn into a week-long wait.
Common Roof Inspection Problems We See in San Mateo Homes
- Moss and algae on north-facing slopes under tree canopy: Fog keeps roofs damp, and heritage oaks in Baywood and Aragon drop debris that feeds moss growth. Within a few years, moss lifts shingle tabs and traps water against the decking.
- Failed underlayment at valleys on low-slope roofs: Mid-century ranches in San Mateo often have low-slope or flat sections where old felt underlayment breaks down faster. Water pools, seeps through, and rots the decking before you see a ceiling stain.
- Undersized drip edge and compromised flashing at penetrations: Homes built in the 1950s and 1960s frequently have drip edge that’s too small for modern code, and pipe boot flashing that’s cracked from years of damp air. Both let water behind the gutter line and into the soffit.
- Soft decking around plumbing vents on fog-damp mornings: The marine layer keeps plywood decking from drying out, so a small leak at a vent pipe becomes a soft spot that spreads. We moisture-read every penetration during an inspection because this is exactly where hidden damage hides.
Pricing for Roof Inspection in San Mateo, CA
A standard visual roof inspection in San Mateo runs $150 to $400 for most single-family homes. Homes with multiple roof planes, detached structures, or acreage that requires longer access walks land at $350 to $500. If we find damage and you approve a repair, we credit the inspection fee toward that work. What drives the cost on larger properties is time on site and the number of penetrations and flashings we test, not some arbitrary upcharge. Call (361) 320-9467 for a free estimate and we’ll give you a firm number before you commit.
One thing that surprises people new to San Mateo roofing: the fog means we can’t always tear off and re-roof on the first clear day. Decking needs to be dry before new underlayment goes down. A good inspector reads the moisture conditions and schedules work accordingly. That’s part of what you’re paying for when you hire someone who works these roofs regularly.
We Also Serve Cities Near San Mateo
Brennan Roofing serves homeowners across the Peninsula, including Burlingame, Belmont, Millbrae, and San Carlos. If you’re in one of those communities and need a Roof Inspection in San Mateo or nearby, the same local crews and The Garrison Standard apply. One call covers the whole area.
Serving San Mateo, CA - Our Local Coverage Area
We’re based in the San Mateo area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Roof Inspection in San Mateo
Yes. Unincorporated San Mateo County parcels follow county permitting rules rather than city code, and well and septic setbacks on acreage can limit where we can stage equipment or place a dump trailer. Our inspectors factor that into the access plan and the estimate before work begins. Call (361) 320-9467 and we’ll walk your property with the county requirements in mind.
Morning marine-layer fog keeps roofs in Baywood, Aragon, and other tree-canopied San Mateo neighborhoods damp well into the afternoon. A friend a few miles inland on the Peninsula might get six or eight hours of full sun that dries out a roof deck. Your roof might get four. When moss takes hold on a north-facing slope under a redwood, it lifts shingle tabs within two or three seasons. Treatment and occasional cleaning are part of living under that canopy. We can scope a maintenance plan during an inspection.
Yes. Many 1950s and 1960s ranches in San Mateo have low-slope or flat roof sections, and these require a different inspection than a pitched shingle roof. We check the membrane for ponding water, seam separation, blistering, and UV breakdown. We moisture-read the decking underneath. These roofs fail differently than a steep roof, and a generic inspection that skips membrane testing misses the point.
We scope the haul route during the estimate. Long driveways, soft ground, and tight gate clearances change how we stage materials and where we can safely place a dump trailer. We don’t surprise you with an access fee later; it’s on the original written estimate. If we need to shuttle materials with a smaller vehicle, that’s included too. For detached ADUs and outbuildings, we inspect them separately and itemize any roof work on their own line.
It covers the full roof surface, all penetrations, flashing, drip edge, valleys, gutters, and attic ventilation. On foggy San Mateo roofs, we also take moisture readings on the decking at every penetration and valley, because soft sheathing hides under intact shingles. We photograph everything, document what’s failing now and what’s likely to fail within two or three seasons, and write the scope and cost in English you can read. Call (361) 320-9467 to schedule your free estimate.
Written by Travis Oakley, Owner at Brennan Roofing, serving San Mateo and the wider Peninsula under The Garrison Standard.