Short answer: As of September 2026, the five highest-scoring roofing contractors in the Santa Rosa-Petaluma, CA metro on The Roofing Brief Contractor Score are Crandall Roofing, Inc. (94.6), Heritage Quality Roofing, Inc., trading as Heritage Roofing Co. (91.3), Capstone Roofing, Inc. (83.5), Sustainable Living Builders Inc (79.8), Cornerstone Roofing Inc (79.0). Each is certified by a manufacturer whose register we checked by hand, each rating has been tested against a source outside that register, and nobody bought a place on this page.
The Roofing Brief scored 11 certified roofing contractors serving the Santa Rosa metro on a published, reproducible formula, then researched each of the top five individually to confirm its record. Sonoma County’s NOAA record contains twenty hail reports across ten years, every one of them a quarter of an inch, and zero dollars of severe-weather property damage. Pea-sized hail does not damage a shingle. Nothing in the storm record explains why roofs fail here, because the thing that destroys roofs in Sonoma County is fire. The Tubbs Fire of October 2017 burned into Santa Rosa itself and destroyed thousands of homes; the Glass Fire followed in 2020. That history is why the roofing question here is about ember resistance and assembly class, not about hail rating, and why several contractors below build fire-rated and high-performance assemblies as a matter of routine.
The conditions a Santa Rosa roof has to be specified for
The governing rule in most of this county is California’s wildland-urban interface construction standard, Chapter 7A of the Building Code, which applies in State Responsibility Areas and locally designated Very High Fire Hazard Severity Zones. Large parts of Santa Rosa, Sonoma, Glen Ellen, Windsor and the county’s rural edges fall inside them. Chapter 7A drives a Class A fire-rated roof assembly, ember-resistant venting, non-combustible detailing where the roof meets the wall, and restrictions on what can be installed in the roof-to-wall and eave junctions. Ask any contractor to state in writing which zone your address is in and how the quoted assembly complies.
The second layer is Title 24 Part 6, California’s energy code. Sonoma County sits in Climate Zone 2, and a re-roof must meet minimum aged solar reflectance and thermal emittance values or an equivalent Solar Reflectance Index before the building department will close the permit. That is a separate test from the fire rating and both have to be satisfied by the same product.
California licenses roofing properly, as Class C-39 through the Contractors State License Board, requiring four years of journey-level experience and two examinations. The CSLB record also publishes complaint and disciplinary history, which very few state registers do. In a county that has rebuilt at speed after two major fires, checking that record matters more than usual: rapid rebuild markets attract entrants, and the CSLB is where the history shows.
One practical consequence of the fire history is that a large share of Sonoma County roofs are now under twenty years old, because they were rebuilt after 2017 or 2020. If yours is one of them, a contractor recommending full replacement should be able to explain what has actually failed on a roof that age. If yours is not, you are in the older cohort and the ember-resistant detailing on your eaves and vents is probably the most valuable thing a re-roof can buy you.
The 5 best roofers in Santa Rosa, CA
Scored 2026-09-24. The metro mean rating used as the Bayesian prior for Santa Rosa is 4.755, across a pool of 11 certified contractors.
| Rank | Company | TRB Score | Certification | Rating (reviews) | Adjusted | In business since | Based in |
|---|---|---|---|---|---|---|---|
| 1 | Crandall Roofing, Inc. | 94.6 | President’s Club | 4.9 (158) | 4.865 | not published | Santa Rosa, CA |
| 2 | Heritage Quality Roofing, Inc., trading as Heritage Roofing Co. | 91.3 | President’s Club | 5.0 (46) | 4.872 | 1993 | Santa Rosa, CA |
| 3 | Capstone Roofing, Inc. | 83.5 | Master Elite | 4.9 (154) | 4.864 | 1989 | Santa Rosa, CA |
| 4 | Sustainable Living Builders Inc | 79.8 | Master Elite | 4.9 (98) | 4.851 | 2017 | Sebastopol, CA |
| 5 | Cornerstone Roofing Inc | 79.0 | Master Elite | 5.0 (36) | 4.857 | 2006 | Santa Rosa, CA |
1. Crandall Roofing, Inc. — TRB Score 94.6
Crandall Roofing, Inc. is based in Santa Rosa, CA, BBB a+ rating for more than a decade, and holds President’s Club standing on the GAF certification registry.
Certifications held: President’s Club (GAF), Diamond Certified. Certification by more than one manufacturer is uncommon and requires meeting each programme’s separate standards for insurance, training and track record.
| Score component | Points | Max |
|---|---|---|
| Certification tier | 35 | 35 |
| Adjusted rating | 34.6 | 40 |
| Review corpus depth | 15.0 | 15 |
| Metro proximity | 10.0 | 10 |
| Total | 94.6 | 100 |
Independently corroborated:
- A+ rated for more than a decade, with CSLB licence 452195 on the BBB record expiring 30 November 2026. BBB
- Diamond Certified, awarded only after an independent researcher telephone-surveys a random sample of the company’s own customer list; 305 surveys on record. Diamond Certified
- Long review history on Angi. Angi
What they actually do. Repairs, re-roofing, installation and storm damage across Sonoma County.
Why it ranks here. Diamond Certified with 305 independent telephone surveys behind it is the most rigorous consumer credential any contractor in this programme holds, because it cannot be gamed the way an open review platform can. Add President’s Club certification, a CSLB licence in the low 452,000s indicating a licence issued decades ago, and a decade of A+ rating, and this is the strongest combined record in the county. Its 94.6 leads by 3.3 points.
Best fit for: Santa Rosa homeowners generally, and anyone who wants independently surveyed evidence rather than volunteered reviews.
Verify the certification yourself on the GAF registry listing. The number carried on that listing is (707) 586-2500, which is the registry’s contact line and is often a directory tracking number rather than the contractor’s own: take the number from the company’s own website and compare the two.
2. Heritage Quality Roofing, Inc., trading as Heritage Roofing Co. — TRB Score 91.3
Trades as Heritage Quality Roofing, Inc., trading as Heritage Roofing Co.; listed on the GAF registry as Heritage Quality Roofing Inc.
Heritage Quality Roofing, Inc., trading as Heritage Roofing Co. is based in Santa Rosa, CA, in business since 1993, Not accredited; BBB file opened 9 July 2001, and holds President’s Club standing on the GAF certification registry.
| Score component | Points | Max |
|---|---|---|
| Certification tier | 35 | 35 |
| Adjusted rating | 34.9 | 40 |
| Review corpus depth | 11.4 | 15 |
| Metro proximity | 10.0 | 10 |
| Total | 91.3 | 100 |
Independently corroborated:
- Not BBB accredited; the BBB file was opened on 9 July 2001 and the business started locally on 1 July 1993. BBB
- Neighbour reviews describe a hands-on owner and a hard-working crew. Nextdoor
- More than 25 years roofing in Sonoma County. Company
What they actually do. Residential roofing across Sonoma County.
Why it ranks here. A clean 5.0 registry rating with President’s Club certification, and a business trading in this county since 1993, which means it roofed here before the 2017 fires and rebuilt after them.
Best fit for: Santa Rosa homeowners wanting a long-established local firm.
What we would want clarified. Not BBB accredited, and 46 registry reviews is a thin sample. Check the CSLB record, which publishes complaint and disciplinary history. We publish this because a ranking that only prints the flattering findings is an advertisement, not an assessment.
Verify the certification yourself on the GAF registry listing. The number carried on that listing is (707) 544-4500, which is the registry’s contact line and is often a directory tracking number rather than the contractor’s own: take the number from the company’s own website and compare the two.
3. Capstone Roofing, Inc. — TRB Score 83.5
Capstone Roofing, Inc. is based in Santa Rosa, CA, in business since 1989, BBB accredited since 1 July 2000, A+ rating, and holds Master Elite standing on the GAF certification registry.
| Score component | Points | Max |
|---|---|---|
| Certification tier | 24 | 35 |
| Adjusted rating | 34.6 | 40 |
| Review corpus depth | 14.9 | 15 |
| Metro proximity | 10.0 | 10 |
| Total | 83.5 | 100 |
Independently corroborated:
- A+ rated and accredited since 1 July 2000, a 26-year unbroken record, in business since 1 January 1990. BBB
- Family owned since 1989, more than 50 in-house roofers and over 20,000 roof replacements completed. Company
What they actually do. Residential, commercial and industrial roofing including composition shingle, single-ply and TPO.
Why it ranks here. Twenty-six years of unbroken A+ accreditation and more than 20,000 completed replacements, using more than fifty in-house roofers rather than subcontracted labour. Subcontracting is where installation quality most often diverges from the certification a company holds, and at this scale that distinction matters.
Best fit for: Homeowners who want to know the crew works for the company, and commercial or flat roofs.
What we would want clarified. Master Elite rather than President’s Club, which is the only reason it sits third. We publish this because a ranking that only prints the flattering findings is an advertisement, not an assessment.
Verify the certification yourself on the GAF registry listing. The number carried on that listing is (415) 297-1166, which is the registry’s contact line and is often a directory tracking number rather than the contractor’s own: take the number from the company’s own website and compare the two.
4. Sustainable Living Builders Inc — TRB Score 79.8
Sustainable Living Builders Inc is based in Sebastopol, CA, in business since 2017, and holds Master Elite standing on the GAF certification registry.
| Score component | Points | Max |
|---|---|---|
| Certification tier | 24 | 35 |
| Adjusted rating | 34.0 | 40 |
| Review corpus depth | 13.6 | 15 |
| Metro proximity | 8.2 | 10 |
| Total | 79.8 | 100 |
Independently corroborated:
- Holds a B general building licence and is listed with the North Coast Builders Exchange. Trade body
- Member of the Santa Rosa Metro Chamber. Chamber
- Specialises in sustainable roofing, solar and high-performance construction across Sonoma County and the Bay Area. Company
What they actually do. Sustainable roofing, solar and high-performance building envelopes.
Why it ranks here. 98 registry reviews at 4.9 from a firm holding a B general building licence alongside its roofing work, specialising in high-performance envelopes and solar. In a county rebuilding to Chapter 7A fire standards, a contractor that thinks in whole-assembly terms rather than shingle-only terms is genuinely useful.
Best fit for: Roof-and-solar projects, high-performance retrofits and Sebastopol and west county properties.
What we would want clarified. No BBB profile or rating was locatable, and the company was established in 2017 so the record is short. Verify the CSLB licence directly. We publish this because a ranking that only prints the flattering findings is an advertisement, not an assessment.
Verify the certification yourself on the GAF registry listing. The number carried on that listing is (707) 595-8500, which is the registry’s contact line and is often a directory tracking number rather than the contractor’s own: take the number from the company’s own website and compare the two.
5. Cornerstone Roofing Inc — TRB Score 79.0
Cornerstone Roofing Inc is based in Santa Rosa, CA, in business since 2006, BBB profile on record, and holds Master Elite standing on the GAF certification registry.
| Score component | Points | Max |
|---|---|---|
| Certification tier | 24 | 35 |
| Adjusted rating | 34.3 | 40 |
| Review corpus depth | 10.7 | 15 |
| Metro proximity | 10.0 | 10 |
| Total | 79.0 | 100 |
Independently corroborated:
- BBB profile on record, showing CSLB licence 909400 expiring 31 January 2028. BBB
- Founded 2006, grown from a single truck to an established Sonoma County roofing company. Company
What they actually do. Residential roofing across Sonoma County.
Why it ranks here. A clean 5.0 registry rating with a CSLB licence number and expiry both verifiable on the public record, and twenty years trading in the county.
Best fit for: Santa Rosa homeowners.
What we would want clarified. Thirty-six registry reviews, and no BBB letter rating was displayed on the profile we retrieved. We publish this because a ranking that only prints the flattering findings is an advertisement, not an assessment.
Verify the certification yourself on the GAF registry listing. The number carried on that listing is (707) 546-3547, which is the registry’s contact line and is often a directory tracking number rather than the contractor’s own: take the number from the company’s own website and compare the two.
1 severe weather reports in a decade, and why that matters in Santa Rosa
Aggregate hail counts tell you very little about a specific roof. These are the individual events: every severe-weather report logged by the National Weather Service across the 1 county of the Santa Rosa-Petaluma, CA statistical area over ten years, with the dates, the stone sizes and the towns they landed on. Over that decade the metro logged 20 hail reports, 1 severe thunderstorm and high wind report and 0 tornadoes. The database’s property-damage fields are left blank for most of these reports, so it carries no usable loss total for this metro and we do not quote one.
The biggest hail to fall on Santa Rosa in a decade
| Date | Stone size | Reported near | County |
|---|---|---|---|
| 5 March 2017 | 0.25 in | Mark West | Sonoma |
| 10 March 2021 | 0.25 in | Santa Rosa | Sonoma |
| 11 June 2017 | 0.25 in | Cotati | Sonoma |
| 11 June 2017 | 0.25 in | Santa Rosa | Sonoma |
| 14 March 2018 | 0.25 in | Petaluma | Sonoma |
| 15 February 2019 | 0.25 in | Windsor | Sonoma |
The largest stone on record for this metro fell on 5 March 2017 near Mark West, measured at 0.25 inches. That is below the size at which hail normally damages a shingle roof.
Wind. The strongest thunderstorm gust logged in the metro was 60 knots, about 69 mph, near Jimtown on 16 August 2020. Asphalt shingles begin lifting at roughly 67 mph when they are correctly nailed, and considerably below that when they are not.
What the National Weather Service wrote about it
The NWS logs a written account of each severe-weather episode. This is its description of the 5 March 2017 event near Mark West, reproduced verbatim:
A cold front moved through the MTR CWA the night of Saturday March 4th producing steady rain and isolated thunderstorms into Sunday. This system resulted in minor roadway flooding, a debris flow, and pea sized hail.
That account is the design case for a roof here, and it comes from the agency that recorded it rather than by a contractor selling the repair.
When it happens. Severe weather reports cluster in March (7), January (6), February (4). The worst years on record were 2018 (9), 2020 (6), 2017 (3). If you are scheduling non-urgent work in Santa Rosa, the months outside that window are when crews are least stretched and least likely to be triaging emergency callouts ahead of your job.
Source: NOAA National Centers for Environmental Information, Storm Events Database, county-level detail files 2016 to 2025, filtered to the counties of this statistical area by The Roofing Brief. Damage figures are as reported to the NWS and undercount insured losses.
What to do with this. Hail is not the governing risk in Santa Rosa. Weight your decision toward wind rating, ventilation and flashing detail rather than paying extra for impact-rated shingles.
Before you sign anything in Santa Rosa
Licensing is required in CA. California requires a Contractors State License Board licence for any job where labour and materials combined reach $1,000 or more, a threshold raised from $500 by Assembly Bill 2622 on 1 January 2025. The exemption never covers a reroof, because the Board treats any work that needs a permit as requiring a licence whatever its value. Roofing is the C-39 classification; a B General Building licence can also cover it.
A C-39 qualifier must document at least four years of journey-level experience and pass both a trade examination and a law and business examination. Every active licence carries a $25,000 contractor’s bond, and C-39 roofing licensees must carry workers’ compensation whether or not they have employees: roofing is one of the few classifications that cannot file the no-employee exemption.
Check here: CSLB Check a License. The CSLB record also shows complaint and disciplinary history, including citations and accusations. Treat any status other than Active as disqualifying.
Four checks to run before you sign anything, in any state.
- Verify certification at the source. Use the GAF verification tool rather than trusting a badge image on a company website.
- Get the certificate of insurance from the insurer, not the contractor, and confirm general liability and workers compensation are both active on the day work starts.
- Confirm who pulls the permit. If a contractor asks you to pull it as the homeowner, that moves liability onto you. Decline.
- Get warranty terms in writing before any deposit, and check the manufacturer warranty being promised actually requires the certification tier the contractor holds.
What the rest of the Santa Rosa field looks like
11 certified roofing contractors serve the principal cities of the Santa Rosa-Petaluma, CA statistical area, of which 2 hold the top President’s Club tier. The pool carries 708 customer reviews between them at a mean rating of 4.755. The statistical area had a 2024 population of 485,375, a change of -0.71% against the 2020 census base, per the U.S. Census Bureau Vintage 2024 estimates.
How these Santa Rosa rankings were produced
Every contractor in the Santa Rosa-Petaluma, CA pool was scored out of 100 on four published components: certification tier, a Bayesian adjusted rating, review depth and distance from the metro centre. In this metro that meant scoring 11 certified contractors, of whom 2 hold President’s Club standing and 9 Master Elite, against a metro mean rating of 4.755. The top five were then researched individually against Better Business Bureau records, state licence registers and manufacturer directories. Anything unflattering that research surfaced appears above alongside the rest, and no company bought its position.
The full method, the weightings, what the GAF certification tiers actually mean, who is eligible to be ranked and what we do not claim are all set out on our roofer ranking methodology page. Last updated: September 2026. Scoring run: 2026-09-24. Corrections go to the editor and are actioned on verification.
Questions Santa Rosa homeowners ask
Who is the best roofer in Santa Rosa, CA?
Crandall Roofing, Inc. of Santa Rosa, CA scores highest in the Santa Rosa metro on The Roofing Brief Contractor Score, at 94.6 out of 100 as of September 2026. It holds President’s Club certification with a 4.9 rating across 158 reviews. Highest-scoring is not the same as best fit for your specific job, and the four companies behind it score within 15.6 points.
How many certified roofing contractors serve Santa Rosa?
11 contractors on the GAF certification registry serve the principal cities of the Santa Rosa-Petaluma, CA statistical area as of September 2026, of which 2 hold President’s Club status.
How much damaging hail does Santa Rosa get?
The Santa Rosa-Petaluma, CA statistical area recorded 0 hail reports of 1 inch or larger and 0 of 2 inches or larger between 2016 and 2025 in the NOAA Storm Events Database. The largest hailstone reported measured 0.25 inches.
Did any contractor pay to appear on this list?
No. The Roofing Brief takes no placement fees, no lead fees and no affiliate commission from any roofing contractor. Ranking comes entirely from the published formula applied to public registry data, followed by an individual research pass on the top five.
What was the worst hailstorm in Santa Rosa in the last ten years?
The largest hailstone logged by the National Weather Service in the Santa Rosa-Petaluma, CA statistical area between 2016 and 2025 measured 0.25 inches, reported near Mark West on 5 March 2017. That is below the size at which hail normally damages a shingle roof. Across the decade the metro recorded 20 hail reports. The database’s property-damage fields are left blank for most of these reports, so it carries no usable loss total for this metro and we do not quote one.
When is the worst time of year for roof damage in Santa Rosa?
Severe-weather reports in the Santa Rosa-Petaluma, CA statistical area cluster in March, January, February, on the NOAA record for 2016 to 2025. Booking non-urgent roof work outside those months usually means shorter lead times, because local crews are not simultaneously triaging storm callouts.
Do roofers need a licence in CA?
California requires a Contractors State License Board licence for any job where labour and materials combined reach $1,000 or more, a threshold raised from $500 by Assembly Bill 2622 on 1 January 2025. The exemption never covers a reroof, because the Board treats any work that needs a permit as requiring a licence whatever its value. Roofing is the C-39 classification; a B General Building licence can also cover it. A C-39 qualifier must document at least four years of journey-level experience and pass both a trade examination and a law and business examination. Every active licence carries a $25,000 contractor’s bond, and C-39 roofing licensees must carry workers’ compensation whether or not they have employees: roofing is one of the few classifications that cannot file the no-employee exemption.
What should I check before hiring a roofer in Santa Rosa?
The CSLB record also shows complaint and disciplinary history, including citations and accusations. Treat any status other than Active as disqualifying.
Is Santa Rosa a hard market to find a good roofer in?
Sonoma County’s NOAA record contains twenty hail reports across ten years, every one of them a quarter of an inch, and zero dollars of severe-weather property damage. Pea-sized hail does not damage a shingle. Nothing in the storm record explains why roofs fail here, because the thing that destroys roofs in Sonoma County is fire. The Tubbs Fire of October 2017 burned into Santa Rosa itself and destroyed thousands of homes; the Glass Fire followed in 2020. That history is why the roofing question here is about ember resistance and assembly class, not about hail rating, and why several contractors below build fire-rated and high-performance assemblies as a matter of routine.
Roofer rankings for other metros
The Roofing Brief scores certified roofing contractors in the 400 largest U.S. metropolitan and micropolitan areas on the same formula.
- Best roofers in Vallejo, CA, about 34 miles from Santa Rosa
- Best roofers in San Francisco, CA, about 49 miles from Santa Rosa
- Best roofers in Sacramento, CA, about 67 miles from Santa Rosa
- Best roofers in Stockton, CA, another CA metro on the same formula
- Best roofers in San Jose, CA, another CA metro on the same formula
- Best roofers in Visalia, CA, a metro of comparable size
- Best roofers in Wilmington, NC, a metro of comparable size
- Best roofers in Chico, CA, also scored, about 102 miles away
- Best roofers in Honolulu, HI, also scored, about 2394 miles away
See the full index of all 400 metro roofer rankings, or read how to find and vet a roofing contractor anywhere in the country.
Cite this analysis
The Roofing Brief. “Best Roofers in Santa Rosa, CA: The Roofing Brief Contractor Score.” Published September 2026. Inputs: GAF certification registry; NOAA Storm Events Database 2016-2025; U.S. Census Bureau Vintage 2024 population estimates; Better Business Bureau and independent review-platform records for each ranked contractor.