Sierra Roofing and Solar vs Roof By Tom
East Bay Roofing Comparison · Updated January 2026
| Sierra Roofing and Solar | Roof By Tom | |
|---|---|---|
| Rating | ★ 4.8 | ★ 4.8 |
| Years Licensed | 22 years | 2 years |
| License # | 835854 | 1112980 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Dublin, CA | Moraga, CA |
| Website | www.sierraroofing.com | roofbytom.com |
Our Analysis
Roof By Tom operates from Moraga in Contra Costa County and has been licensed for 2 years with an active license status. Customer feedback describes work such as full roof replacements, overlays, leak repairs, and tile-roof repairs, with some mentions of gutter work and assistance related to water damage. Reviews often emphasize timely scheduling, crews arriving on time, efficient work, and leaving the property clean. A small number of reviews note dissatisfaction with specific outcomes or workmanship on certain jobs. Both companies are described as communicating clearly during the process, but the available information suggests Sierra is more frequently associated with inspections and solar-related work, while Roof By Tom is more frequently associated with efficiency and punctual scheduling.
Why choose Sierra Roofing and Solar?
- ✓ You want a contractor with long licensing tenure (22 years) and an active license, plus workers’ compensation coverage and a $25,000 bond.
- ✓ Your project may involve multiple exterior needs (roofing plus gutters, and potentially solar-related work) based on the services referenced in customer feedback.
- ✓ You value detailed inspections, written estimates that outline scope, and explanations of findings and next steps.
- ✓ You may need help diagnosing or addressing active leaks, including time-sensitive visits during heavy rain, as described by customers.
Why choose Roof By Tom?
- ✓ You are in or near Moraga/Contra Costa County and want a locally based contractor with an active license, workers’ compensation coverage, and a $25,000 bond.
- ✓ Your project is primarily roofing-focused, such as a full replacement, overlay, leak repair, or tile-roof repair, which are commonly referenced in customer feedback.
- ✓ You prioritize timely scheduling, crews arriving on time, and efficient job execution, as described by customers.
- ✓ You want clear scope explanations and consistent communication through completion, while noting that a small number of customers reported dissatisfaction with specific outcomes.
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Frequently Asked Questions
Yes. Both Sierra Roofing and Solar and Roof By Tom are listed as having workers’ compensation coverage and a $25,000 bond.
Sierra Roofing and Solar has been licensed for 22 years, while Roof By Tom has been licensed for 2 years.
Sierra Roofing and Solar is described as handling solar-related work in addition to roofing and gutters. Roof By Tom’s feedback is primarily centered on roofing, with some gutter work mentioned.
Sierra Roofing and Solar is based in Dublin, Alameda County, California. Roof By Tom is based in Moraga, Contra Costa County, California.
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.