Residential RoofersCheck a roofer's license before you sign anything

10 top-rated roofers near Alum Rock: check before you call

Alum Rock has 10 top-rated roofers on this page, screened from Google rather than a state file. Reviews behind them range from 19 to 325 per business. Before you sign, run whatever number they give you through your state's lookup, not through this page.

Google Maps ratings checked · How we rank

10 top-rated roofers near Alum Rock: check before you sign

We sort this list by Google rating, pulled down a notch when the review count behind it is thin; it's a sort, not the license check this tool otherwise runs, so look that number up separately.

  1. Los Gatos RoofingRoofing contractor · 4.8 out of 5 on Google · 325 Google reviews · San Jose 95112Google reviews
  2. Deluxe Roof RepairRoofing contractor · 5.0 out of 5 on Google · 32 Google reviews · San Jose 95111Google reviews
  3. Sterling Roofing RepairRoofing contractor · 4.9 out of 5 on Google · 33 Google reviews · San Jose 95113Google reviews
  4. RoofCore SolutionsRoofing contractor · 4.9 out of 5 on Google · 31 Google reviews · San Jose 95112Google reviews
  5. Rooflow Roof Repair & InstallationRoofing contractor · 4.9 out of 5 on Google · 23 Google reviews · San Jose 95113Google reviews
  6. Vargas Crown Peak RoofingRoofing contractor · 4.9 out of 5 on Google · 21 Google reviews · San Jose 95122Google reviews
  7. Peak Roofing San JoseRoofing contractor · 4.9 out of 5 on Google · 19 Google reviews · San Jose 95127Google reviews
  8. TitanShield RoofingRoofing contractor · 4.8 out of 5 on Google · 25 Google reviews · San Jose 95132Google reviews
  9. SecurePeak RoofingRoofing contractor · 4.8 out of 5 on Google · 23 Google reviews · San Jose 95110Google reviews
  10. Superior Roof RepairRoofing contractor · 4.8 out of 5 on Google · 19 Google reviews · San Jose 95131Google reviews

How to check a license in California

  1. Search using the license number, the business name, or the name of whoever qualifies the license.[1]
  2. Confirm the classification reads C-39, the roofing classification, rather than relying on a general "B" license for a single-trade roof job.[2]
  3. Check that workers' compensation is shown on file; C-39 roofers must carry it whether or not they have employees.[2]
  4. Review the license's status and any disciplinary history displayed on the same result page.[1]

CSLB Check a Contractor License

Warning signs

  • A license status that reads inactive, revoked, or suspended, or a business name that doesn't match your bid.[1]
  • No pocket license or photo ID offered when someone arrives to give you a bid in person.[3]
  • A deposit bigger than the state's own cap, the smaller of a tenth of the job's price or $1,000, without a bond on record to explain the extra.[4]
  • Pressure to waive or rush past your three-day right to cancel after signing.[4]

Rules that protect you

  • California requires a $25,000 bond for a C-39 license, on top of mandatory workers' compensation coverage for every C-39 roofer.[2]
  • Any roofing job with combined labor and materials of $500 or more requires a C-39-licensed contractor by law.[2]
  • A written contract is required for home improvement work over $500, with a right to cancel within three days of signing.[4]

Before you let anyone on your {city} roof

  1. Does the name on the bid match the name on the license exactly?
  2. Is the license active, and when does it expire?
  3. Does the company have a local address, or only a cell phone number and an out-of-state plate?
  4. Did they contact you first, unprompted, right after a storm?
  5. Are they asking for full payment, cash only, or a deposit before any paperwork is signed?
  6. Will they give you a written, itemized estimate before you commit to anything?

More on California →

Storm risk near Alum Rock

Storm season is when out-of-town crews travel the farthest looking for damaged roofs, Alum Rock included.

Hail
Relatively Low
Strong wind
Very Low
Wildfire
Relatively Moderate

Data: FEMA, National Risk Index for Natural Hazards - County-level table, v1.20 (v1.20, December 2025).

Check other cities in California

All cities in California →

Sources

  1. Check a Contractor License or Home Improvement Salesperson (HIS) Registration, Contractors State License Board, accessed 2026-09-30
  2. Roofing Contractor (C-39) Licensing Classification, Contractors State License Board, accessed 2026-09-30
  3. How do I find the right licensed contractor?, Contractors State License Board, accessed 2026-09-30
  4. What Should I Look for in a Contract and Binding Agreements?, Contractors State License Board, accessed 2026-09-30