Bayside Roofing vs Mortensen Roofing & Gutters
East Bay Roofing Comparison · Updated January 2026
| Bayside Roofing | Mortensen Roofing & Gutters | |
|---|---|---|
| Rating | ★ 1.0 | ★ 5.0 |
| Years Licensed | 16 years | 36 years |
| License # | 939666 | 583533 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Castro Valley, CA | Concord, CA |
| Website | baysideroofing.org | www.mortensenroofing.com |
Our Analysis
Key differences appear in tenure, location, and the tone of customer feedback. Mortensen Roofing & Gutters has been licensed for 36 years, compared with 16 years for Bayside Roofing. Geographically, Bayside Roofing operates from Castro Valley in Alameda County, while Mortensen Roofing & Gutters operates from Concord in Contra Costa County; this may affect travel time, scheduling, and whether the contractor regularly works in your neighborhood.
Customer feedback summaries differ notably. Bayside Roofing’s summary centers on dissatisfaction with professionalism and communication, including difficulty getting responses after payment when following up about a reported roof leak. Mortensen Roofing & Gutters’ summary emphasizes professionalism, clear communication, dependable scheduling, and workmanship that meets expectations, including help with leak repairs and sourcing replacement materials after damage. These summaries reflect reported customer experiences rather than verified outcomes.
Why choose Bayside Roofing?
- ✓ You’re located in or near Castro Valley or elsewhere in Alameda County and want a contractor based in that area.
- ✓ You value that the company reports an active license, workers’ compensation coverage, and a $25,000 bond.
- ✓ You’re comfortable setting clear expectations in writing about communication, follow-up, and how post-job issues (such as leaks) will be handled.
- ✓ You want to evaluate responsiveness during the estimate process, given the customer feedback summary referencing follow-through concerns.
Why choose Mortensen Roofing & Gutters?
- ✓ You’re located in or near Concord or elsewhere in Contra Costa County and prefer a contractor based nearby.
- ✓ You prioritize longer licensing tenure (36 years) alongside an active license status.
- ✓ You want a contractor whose customer feedback summary highlights clear communication, scheduling follow-through, and straightforward estimating.
- ✓ You may need leak-related repairs or help sourcing replacement materials after damage, which is specifically mentioned in the feedback summary.
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Frequently Asked Questions
Yes. Both Bayside Roofing and Mortensen Roofing & Gutters are listed with an active license status, indicating they are currently authorized to perform roofing work in the state.
Yes. Each company reports workers’ compensation coverage and a $25,000 bond, which can be relevant for jobsite injury protection and certain contractual obligations.
Mortensen Roofing & Gutters has been licensed for 36 years, while Bayside Roofing has been licensed for 16 years.
Bayside Roofing is based in Castro Valley in Alameda County and primarily serves surrounding Alameda County areas and nearby communities. Mortensen Roofing & Gutters is based in Concord in Contra Costa County.
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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.