Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
After
Before
AfterFast, Reliable Roof Replacement Across San Lorenzo
Roof replacement in San Lorenzo, CA typically runs $12,000 – $28,000 for a standard asphalt shingle roof on a 1,500 – 2,500 square foot home, with most jobs completed in 2 – 4 days depending on decking condition and weather. We’re Crestview Roofing, and our crews work San Lorenzo neighborhoods regularly, from the older ranch homes near Hesperian Boulevard to the hillside properties off Grant Avenue where wind exposure accelerates shingle wear. Our San Francisco Bay Area dispatch office coordinates scheduling and live arrival tracking for every San Lorenzo appointment, and a live person answers our phones 24/7 at (325) 246-5075. If your roof is past 20 years, showing curled or missing shingles, or you’ve spotted daylight through the decking in your attic, it’s time to talk through your options with a crew that knows this specific market.
Why Crestview Roofing Is San Lorenzo’s Preferred Roof Replacement Company
We’ve been replacing roofs since 2000, and the San Lorenzo market has distinct characteristics that matter for pricing and material selection. The mix of 1950s – 1970s tract housing near Lewelling Boulevard and the custom builds in the unincorporated pockets east of downtown means we see everything from original 3-tab shingles on 1,200-square-foot ranches to complex architectural layouts with multiple valleys and dormers. Our Roof Replacement team carries GAF and CertainTeed materials suited to both, and we pull the proper permits through Alameda County for every job that requires them.
San Lorenzo homeowners tell us the same thing repeatedly: they want to know who’s coming, when they’ll arrive, and what the final number will be before anyone steps on a ladder. That’s exactly what The Relay Visibility Guarantee delivers. You get a written price before work starts, before-and-after photo documentation sent to your phone, a live trackable arrival time, and a digital invoice by text. No four-hour windows. No surprise charges when the crew finds soft decking. The price we put in writing is the price on your invoice, every time.
Our 365-Day Done Right Promise covers every repair for a full year, in writing, included with every job. If something we installed fails within that window, we come back and fix it at no charge. That includes a free second visit if the repair doesn’t hold. Dylan Pace built Crestview Roofing on this standard, and it’s why San Lorenzo customers refer us to neighbors in the Ashland and Cherryland areas.
Asphalt Shingle Roof Replacement in San Lorenzo
Asphalt Shingle Roof Replacement in San Lorenzo is our most common request, and for good reason. The majority of San Lorenzo’s housing stock, particularly the post-war ranches between Washington Avenue and Via Del Rey, was built with 3-tab asphalt shingles that reach end-of-life right around the 20 – 25 year mark. A full replacement strips the existing shingles down to the decking, inspects and replaces any compromised plywood or OSB, installs new underlayment and flashing, and finishes with architectural or 3-tab shingles. In San Lorenzo’s market, most standard asphalt shingle replacements run $12,000 – $18,000 for a single-story home under 2,000 square feet, while two-story homes or those with complex rooflines near the hills climb toward $22,000 – $28,000.
When Decking Needs Replacement Too
San Lorenzo’s marine-influenced climate, with its persistent morning fog rolling in from San Francisco Bay, keeps roof decking damp longer than inland East Bay cities. We regularly find plywood delamination and mold growth during tear-offs in the lower-lying neighborhoods near San Lorenzo Creek. When we encounter compromised decking, we replace those sections with 1/2-inch CDX plywood before installing new underlayment. This adds $800 – $2,500 to the total depending on how many sheets need replacement, and we document every board with photos before and after.
Architectural vs. 3-Tab for San Lorenzo Homes
Most San Lorenzo homeowners upgrading from original 3-tab shingles choose architectural laminate shingles for the dimensional look and longer lifespan. Architectural shingles from Owens Corning or GAF typically add 15 – 20% to material cost but carry 30-year to lifetime warranties and handle the wind gusts that come off the Bay better than flat 3-tab products. If your HOA or budget requires staying with 3-tab, we stock those too, installed to the same standard.
New Roof Installation in San Lorenzo
New Roof Installation in San Lorenzo covers homes being built from the ground up, major additions, or complete teardowns where the existing structure is removed. Unlike a replacement, there’s no tear-off phase, but the job requires precise coordination with your framing contractor to ensure proper sheathing, ventilation planning, and ice-and-water shield placement at valleys and penetrations. In San Lorenzo’s market, new construction roofing typically runs $10,000 – $16,000 for a standard asphalt shingle system on a 2,000-square-foot home, with flat roofing or premium materials pushing higher. We also handle Roof Installation in San Lorenzo for homeowners adding ADUs or second-story expansions, which is increasingly common in the Grant Avenue corridor.
Flat Roofing for Modern Additions
San Lorenzo’s newer construction and ADU builds increasingly specify low-slope or flat roofing for contemporary designs. We install TPO and modified bitumen systems with proper tapered insulation to ensure drainage, critical in a climate where standing water accelerates membrane failure. Flat roofing for a typical 400-square-foot ADU addition runs $4,500 – $7,500 in this market.
Ventilation Design for Marine Climates
Proper attic ventilation gets overlooked on too many San Lorenzo roofs. The combination of cool, moist marine air and summer heat buildup creates condensation problems that shorten shingle life from the underside. On every new installation, we calculate ridge vent, soffit vent, and static vent placement to meet manufacturer warranty requirements and California Title 24 energy standards.
Trusted Brands We Service in San Lorenzo
We install and repair using manufacturer-backed materials from GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. For San Lorenzo homeowners, that means we’re not locked into a single supplier with limited color options or backordered inventory. We maintain relationships with distributors across the East Bay, so when you want GAF Timberline HDZ in Barkwood to match a neighbor’s recent replacement, or CertainTeed Landmark PRO in Moire Black for a modern look on a hillside home off Bockman Road, we can source it without the month-long delays that plague smaller operators. Every brand we carry qualifies for our 365-Day Done Right Promise, and we register your warranty directly with the manufacturer so there’s no paperwork gap if you need to make a claim in year fifteen.
Common Roof Replacement Problems We See in San Lorenzo Homes
- Fog-driven moisture infiltration at valleys. San Lorenzo’s location in the Bay’s fog belt means morning condensation collects in roof valleys longer than it does in Livermore or Pleasanton. We regularly find deteriorated valley flashing and saturated underlayment in homes north of Lewelling Boulevard, where the fog lingers until midday during summer months.
- Original wood shake conversions done poorly. Many San Lorenzo homes built with wood shakes in the 1960s received asphalt overlays in the 1990s without proper decking replacement. The gaps and irregularities in the original shake substrate telegraph through, causing premature shingle failure and creating leak paths we only discover during full tear-off.
- Wind uplift along the I-880 corridor. Homes closest to the freeway and the open spaces near the San Leandro border experience higher sustained winds. We’ve replaced sections of roofing on multiple properties near Marina Park where improperly nailed shingles lifted in 40-mph gusts, particularly on west-facing slopes.
- Age-related granule loss on south-facing exposures. San Lorenzo’s south-facing roof planes take the brunt of direct sun during our clear fall days. We see accelerated granule loss and thermal cracking on these slopes, often a full 5 – 7 years ahead of north-facing sections on the same home. This uneven aging can trick homeowners into thinking a partial replacement will suffice when the whole system is nearing failure.
Pricing for Roof Replacement in San Lorenzo, CA
Here’s what roof replacement costs look like in the San Lorenzo market right now. These are written-quote ranges based on actual jobs we’ve completed in the last 18 months, not bait-and-switch estimates that balloon once work starts.
| Service | Typical Range in San Lorenzo |
|---|---|
| Asphalt shingle replacement, single-story, 1,200 – 1,800 sq ft | $12,000 – $16,000 |
| Asphalt shingle replacement, two-story or complex roof, 2,000 – 2,800 sq ft | $18,000 – $28,000 |
| Roof decking replacement (per sheet, as needed) | $85 – $140 |
| Architectural shingle upgrade from 3-tab | +15 – 20% material cost |
| Flat roofing (TPO/modified bitumen), per sq ft | $8.50 – $14.00 |
| New construction roof installation, 2,000 sq ft standard | $10,000 – $16,000 |
What moves you within these ranges? Roof pitch matters, steep roofs require more labor and safety equipment. The number of penetrations, chimneys, skylights, and vent stacks adds flashing work. Decking condition is the big variable, we can’t price rotted plywood until we see it, but we build decking replacement into your written quote line-by-line once we do. Every San Lorenzo homeowner receives a fixed written price before any work begins. Call (325) 246-5075 to schedule your free estimate.
We Also Serve Cities Near San Lorenzo
Our crews work throughout the East Bay, and we regularly handle Roof Replacement in San Lorenzo alongside neighboring communities. If you’re in Castro Valley, San Leandro, Union City, or Oakland and need a roof evaluated, we apply the same live-tracked arrival times, written upfront pricing, and photo-documented process. We also provide Roof Repair in San Lorenzo for homeowners not yet ready for full replacement.
Serving San Lorenzo, CA – Our Local Coverage Area
We’re based in the San Lorenzo 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 Replacement in San Lorenzo
We typically schedule roof evaluations in San Lorenzo within 2 – 3 business days of your call, and our live arrival tracking lets you see exactly when your technician is approaching. Call (325) 246-5075 to book, estimates are free and come with a written line-item quote.
Yes, we work across San Lorenzo including the Hesperian Boulevard corridor, Grant Avenue hillside area, Lewelling Boulevard tract neighborhoods, and the Ashland-adjacent streets near Marina Park. Our Bay Area dispatch office routes crews efficiently to all ZIP codes in the 94580 area.
We provide emergency tarping and temporary weatherproofing for storm damage or sudden failures, but full roof replacement is planned construction work that requires material ordering, permit pulling through Alameda County, and crew scheduling. We do not promise same-day replacement, that would mean cutting corners on permits or material quality. For urgent leak situations, call (325) 246-5075 and we’ll get a technician out for temporary protection while we plan the permanent solution.
San Lorenzo pricing sits roughly in line with San Leandro and Castro Valley, slightly below Oakland’s steeper-labor market and above Central Valley cities where permitting is lighter. The main local cost driver is Alameda County’s permit and inspection requirements, which add value by ensuring code compliance but do add to total project cost compared to unincorporated areas with less oversight.
Every replacement includes our 365-Day Done Right Promise in writing, covering any installation-related issues for a full year at no charge, including a free second visit if needed. Manufacturer warranties on GAF, CertainTeed, or Owens Corning materials run 25 years to lifetime depending on product tier, and we register these directly so your coverage is never in question. Call (325) 246-5075 for exact warranty terms on your preferred shingle.
Written by Dylan Pace, Owner at Crestview Roofing, serving San Lorenzo and the East Bay since 2000.