Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roofing Company Across San Ramon
If you need a Roofing Company in San Ramon that shows up with a written price before any work begins, you’re in the right place. We know the Dougherty Valley tracts, the Windermere HOA rulebooks, and the Cal Fire zones along Tassajara Road because we work on those roofs every week. A live person answers our phone around the clock at (743) 200-8347, and every technician who comes to your door has been background-checked and carries a photo ID badge. We’ll send you their name and photo before they arrive, so you know exactly who’s at the door.
Why Mercer Roofing Is San Ramon’s Preferred Roofing Company Company
San Ramon homeowners tend to ask sharper questions than most. They want to know whether the tile profile matches the HOA’s approved palette, whether the underlayment meets the Cal Fire Class A standard, and whether the price on the quote is the price on the invoice. It is. We put every number in writing before a single nail is driven, and that written price never changes mid-job. Our 365-Day Done Right Promise backs every repair: if it isn’t right within a year, we come back and make it right at no charge. That’s not a slogan. It’s the written guarantee we hand you with the work order.
We don’t play games with who shows up at your door. Mercer Roofing is part of the Threshold Group family, founded in 2000, and every independently owned location operates under the Threshold Verified standard. That means background-checked, identity-verified, uniformed technicians on every visit. Every one of them presents a photo ID badge before stepping foot inside. For a parent home alone with young kids, or an older homeowner in Gale Ranch who wants proof of who’s at the door, that single detail matters more than any marketing line ever could.
Our reviews from San Ramon customers consistently mention two things: the quote matched the final bill, and the tech was exactly who the text message said would arrive. Grant Whitlock, who leads our San Ramon work, has built the crew around those two commitments. If a repair fails within 365 days, the second visit is free. No arguing, no fine print.
Roof Inspection in San Ramon
A Roof Inspection in San Ramon typically costs $195 – $395, and it’s the single smartest move a homeowner in a 2000 – 2010 tract build can make before the 15 – 25 year failure window closes on their roof. We walk every slope, document cracked concrete S-tile, lifted ridge caps, granule loss on composition shingles, and step flashing that’s pulling away after Diablo wind events. If your home sits east of Dougherty Valley near Tassajara Road, we also verify that your current assembly meets the Cal Fire Very High Fire Hazard Severity Zone requirements, because a straightforward like-for-like re-roof may not pass permit there.
Builder Warranty Documentation
Many San Ramon tract homes built between 2000 and 2010 are still inside their original builder warranty window. Before any roofer touches your roof, you need to know whether that warranty is still in force. We document every failed flashing detail, underlayment tear, and tile crack with photos and written notes formatted for a warranty claim file. We did exactly this for a Windermere homeowner whose original 2004 concrete S-tile roof started slipping after a wind event, and that documentation became the backbone of their successful claim.
HOA Architectural Review Support
In Windermere and Gale Ranch, a roof inspection isn’t just about the roof. It’s about knowing which tile profiles and color palettes the covenants allow before you spend a dollar. We flag what needs HOA architectural approval and what doesn’t, and we’ll walk your proposed materials through the review process so you don’t get a violation notice after the work is done.
Commercial Roofing in San Ramon
Commercial Roofing in San Ramon runs $9 – $18 per square foot for flat or low-slope systems, with most retail and office properties in the Bishop Ranch and Crow Canyon corridors falling between $12,000 and $45,000 depending on square footage and the condition of the existing decking. Property managers here face the same Diablo wind and heat we see on residential jobs, but the flat membranes and TPO systems common on San Ramon commercial buildings fail differently: heat seams open, ponding water accelerates membrane breakdown, and rooftop HVAC penetrations become leak points. We handle all of it, with the same written pricing and Threshold Verified standards we apply to homes.
Tenant Improvement Coordination
Commercial re-roofs in San Ramon often have to stay out of the way of tenants, deliveries, and business hours. We sequence work in phases and keep you updated with clear, written change orders if anything unexpected shows up in the decking. The price on your original proposal is the price you pay for the work scoped. If the scope changes, you’ll know before we move a single tool.
Cal Fire Compliance for Commercial Properties
Some commercial buildings along the eastern edges of San Ramon fall under the same Very High Fire Hazard Severity Zone rules that affect residential roofs on the Tassajara Road corridor. If your property requires a Class A fire-rated assembly, we’ll tell you at inspection, not after the permit gets rejected. That’s the kind of thing that adds cost and delays when it’s discovered late. We find it early and build it into the written price.
Trusted Brands We Service in San Ramon
We install and repair GAF, CertainTeed, and Atlas roofing systems across San Ramon, and we stock common replacement parts locally so repairs on Dougherty Valley and Bollinger Canyon homes don’t wait on a warehouse shipment. For concrete tile renovations in Windermere and Gale Ranch, we work within the manufacturer-approved profiles and the HOA’s color palettes. On the hillside edges where fire codes apply, we specify GAF and CertainTeed Class A assemblies that pass San Ramon’s permit review the first time. Fast turnaround matters when a Diablo wind event lifts ridge caps on a dozen homes in the same week. We keep enough material on hand to move quickly without cutting corners.
Common Roofing Company Problems We See in San Ramon Homes
- Same-age tract roof failures. The Dougherty Valley and Gale Ranch developments went up almost simultaneously between 2000 and 2010, which means thousands of near-identical roofs are now failing in the same seasons. We see the exact same cracked tile pattern on one street after another.
- HOA architectural review surprises. Windermere and Gale Ranch covenants restrict concrete tile profiles and approved color palettes. A homeowner who re-roofs without architectural approval can get a violation notice and be forced to redo work at their own cost.
- Cal Fire Very High Fire Hazard Severity Zone rejections. Homes on the eastern edges of Dougherty Valley and along Tassajara Road legally require Class A fire-rated assemblies. A like-for-like shingle swap gets rejected at permit, which blindsides homeowners who already bought materials.
- Diablo wind damage on east-facing slopes. Hot, dry easterly winds funneling down from the Diablo Range lift ridge caps and loosen step flashing on hillside homes. We see the same east-facing slope damage concentrated in Dougherty Valley and Gale Ranch after every wind event.
Pricing for Roofing Company in San Ramon, CA
Here are real numbers for San Ramon’s market. A roof inspection runs $195 – $395. A standard shingle repair on a composition roof costs $350 – $900. A full roof replacement on a 2,000 – 2,800 square foot San Ramon tract home runs $14,000 – $28,000 for architectural shingles, and $28,000 – $55,000 for concrete S-tile matching Windermere or Gale Ranch covenant palettes. Commercial flat or low-slope systems run $9 – $18 per square foot. The factors that move you through those ranges: tile profile, decking condition, whether you’re in a Very High Fire Hazard Severity Zone, and whether your HOA requires a specific material that costs more. You’ll get a written price for your exact roof before any work starts. Call (743) 200-8347 for a free estimate.
We Also Serve Cities Near San Ramon
Our crews work across San Ramon and the surrounding East Bay communities daily. If you’re in Dublin, Danville, Hayward, or Pleasanton, the same Threshold Verified technicians, the same written pricing, and the same 365-Day Done Right Promise apply. Dispatch is coordinated from our San Francisco Bay Area office, and crews serve San Ramon locally. Call (743) 200-8347 and a live person will answer.
Serving San Ramon, CA - Our Local Coverage Area
We’re based in the San Ramon 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 Roofing Company in San Ramon
Yes, it can, if the original builder warranty is still in force and you have unauthorized work done. Many San Ramon tract homes built between 2000 and 2010 still fall inside their coverage window. Before any roof work begins, we check whether your warranty is active and document everything you need to file a compliant claim. Call (743) 200-8347 and we’ll walk you through what your warranty status means for your roof.
Yes, if your community’s covenants require it, and those two communities almost always do. Gale Ranch and Windermere enforce approved concrete tile profiles and color palettes, and an unapproved re-roof can trigger a violation notice and forced rework. We’ll handle the architectural review submission and the City of San Ramon permit together, so you’re not stuck navigating two approval processes on your own. Call (743) 200-8347 to get your roof and your paperwork right the first time.
Because the Dougherty Valley and Gale Ranch tracts were built almost simultaneously between 2000 and 2010, tens of thousands of nearly identical roofs are hitting the 15 – 25 year failure window at once. The San Ramon Valley also traps inland heat far more than coastal cities, with summer highs regularly above 100°F, which accelerates granule loss and thermal cracking in composition shingles. Add periodic Diablo wind events that lift ridge caps and loosen flashing, and you get block after block of roofs in the same failure stage. Call (743) 200-8347 to find out where your roof sits on that curve.
Yes, it almost certainly does. Homes on the eastern edges of Dougherty Valley and the Tassajara Road corridor fall inside Cal Fire’s Very High Fire Hazard Severity Zone, which legally requires Class A fire-rated roofing assemblies. A same-material replacement can be rejected at permit. We’ll confirm your zone at inspection and build the correct fire-rated spec into your written price. Call (743) 200-8347 for an inspection and a real number.
Some is genuinely fine as-is. If your composition shingles are mid-life and the underlayment is sound, you don’t need to spend money replacing them. But the builder-grade 3-tab shingles common on early Bollinger Canyon and Crow Canyon builds rarely make it past 20 years in San Ramon’s inland heat, and the original underlayment on many 2000 – 2010 concrete tile roofs is now the weak point, not the tile itself. We’ll tell you plainly what’s worth replacing, what’s worth monitoring, and what’s fine to leave alone. Call (743) 200-8347 for an honest read, not a sales pitch.
Written by Grant Whitlock, Owner at Mercer Roofing, serving San Ramon since 2000.






Before
After
Before
After
Before
After