Residential RoofersCheck a roofer's license before you sign anything

Glendora roofing license lookup

9 licensed residential roofers are based in Glendora, CA. Search the list below, then check California's verification steps if you're comparing a bid from somewhere else.

Licenses checked · California Contractors State License Board

33median years licensed

What Glendora's roofing licenses show

Glendora has 9 roofing licenses on file, the oldest dating to 1979.

78% of them have been active for 10 years or more.

Search any of Glendora's licenses by name below before you take a bid at face value.

Data: California Contractors State License Board license records, checked 2026-09-30.

Glendora roofing license records

Listed A to Z by business name. Search by name or license number; this isn't a ranking.

  • Advanced Roofing And Sons INC684276C-39 RoofingExpires May 31, 2028Verify license
  • De Lorenzo's Guaranteed Roofing660528C-39 RoofingExpires Dec 31, 2026Verify license
  • Dowd Industries Corporation380611C-39 RoofingExpires Jan 31, 2028Verify license
  • Gardenball General Construction Company1041273B General Building / C-36 Plumbing / C-39 RoofingExpires Jun 30, 2028Verify license
  • Maximum Coverage Roofing673028C-39 RoofingExpires Jun 30, 2027Verify license
  • Rain Dance Roofing683813C-39 RoofingExpires Jan 31, 2028Verify license
  • Readers Roofing1146274C-39 RoofingExpires Sep 30, 2028Verify license
  • S D Young Roofing691337C-39 RoofingExpires Sep 30, 2028Verify license
  • Storm Tight Roofing INC790524C-39 RoofingExpires Sep 30, 2027Verify license

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]

What the federal hazard data says about Glendora

FEMA's county-level hazard data rates hail risk near Glendora as Relatively Moderate.

Hail is one of the two most common reasons a roofer knocks on a Glendora door uninvited, according to insurance-industry fraud warnings.

That's exactly the moment to check a license instead of signing on the spot in Glendora.

Hail
Relatively Moderate
Strong wind
Relatively Moderate
Wildfire
Very High

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

More California license lookups

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