Calisco Roofing vs Williams Roofing
East Bay Roofing Comparison · Updated January 2026
| Calisco Roofing | Williams Roofing | |
|---|---|---|
| Rating | ★ 5.0 | ★ 4.6 |
| Years Licensed | 3 years | 32 years |
| License # | 1105093 | 687391 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Brentwood, CA | Fremont, CA |
| Website | caliscoroofing.com | williamsroofing.net |
Our Analysis
Williams Roofing is based in Fremont in Alameda County and has been licensed for 32 years, compared with Calisco Roofing’s 3 years licensed. Customer feedback commonly references roof repairs and full roof replacements, including addressing leaks and completing projects as promised. Customers also describe timely scheduling, clear communication, and a straightforward approach to recommendations, including comments that the company does not push unnecessary work and provides fair pricing. Both companies list an active license status, workers’ compensation coverage, and a $25,000 bond, so practical differences may come down to service area, project type fit, and operating history.
Why choose Calisco Roofing?
- ✓ Your property is in or near Brentwood/Contra Costa County and you want a contractor described as serving that local area.
- ✓ You need residential roofing services such as inspections, leak repairs, maintenance, or roof replacement.
- ✓ Your project involves specific systems mentioned by customers, such as low-slope roofing, PVC membrane, torch-down, or tile roof maintenance/repairs.
- ✓ You value process details described by customers, such as on-roof inspection, clear explanation of options/scope, and before-and-after photos.
Why choose Williams Roofing?
- ✓ Your property is in or near Fremont/Alameda County and you prefer a contractor based in that area.
- ✓ You want a company with a longer licensing history (32 years licensed) while still holding an active license.
- ✓ Your need is a roof repair or full roof replacement, including work to address leaks.
- ✓ You prefer a quoting and recommendation approach described as straightforward, with customers noting the company does not push unnecessary work and communicates clearly.
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Frequently Asked Questions
Yes. Both Calisco Roofing and Williams Roofing are listed with an active license status, workers’ compensation coverage, and a $25,000 bond.
Calisco Roofing is based in Brentwood in Contra Costa County and is described as serving customers in the surrounding area within Contra Costa County.
Calisco Roofing is commonly contacted for urgent leak response, and Williams Roofing is commonly referenced for repairs that address leaks.
Customer-referenced examples include low-slope roofing, tile roof maintenance and repairs, PVC membrane roofing, torch-down roofing, gutter cleaning, and roof vent/flashing installation, along with inspections, leak repairs, maintenance, and roof replacement.
Other East Bay Roofing Comparisons
Data Sources: License information from California CSLB. Ratings and reviews from Google. Last verified January 13, 2026.
This comparison is based on publicly available information. We recommend getting multiple quotes and verifying all credentials directly before hiring.