Roofing contractor
ALPHA ONE ROOFING INC
2517 Williams St, San Leandro, CA 94577
- Google average
- 5.0
- Ratings counted
- 3
- One and two star
- 0 of 3
- California median
- Not comparable
The first three are Google’s own figures for ALPHA ONE ROOFING INC, read on 24 September 2026; the share is of every rating Google has counted, not of the review texts on this page. The median is ours — the middle figure among the California roofers we list with enough ratings to compare.
Rating breakdown
| 5 | 3 | 100% | |
|---|---|---|---|
| 4 | 0 | 0% | |
| 3 | 0 | 0% | |
| 2 | 0 | 0% | |
| 1 | 0 | 0% |
Too few ratings to compare against other roofers — at 3 ratings a single unhappy customer moves this figure by several points.
The critical reviews
The one and two-star reviews, first. These are what a star average hides, and they are the reason this page exists.
We hold no one or two-star review text for ALPHA ONE ROOFING INC. That is not the same as there being none — it means our capture did not reach any. The rating breakdown above is Google’s own count and is the number to go on.
Other reviews we hold
2 more of the 2 reviews we hold text for, most recent first. We do not hold every review Google has.
- 5 out of 5S Wa year ago
Without a doubt the best roofing contractor in the Bay Area! Professional, responsive and the highest quality of work. Great team to work with!
- 5 out of 5Sergio Lopeza year ago
Alpha One Roofing is the real deal. They are professional, courteous and, most importantly, they get the job done right. We knew some of our roof wood needed to be replaced, and Alpha One kept us in the loop the whole time. They came in, took away the old roof, and put in the new one so quickly and cleanly. I would highly recommend them , hands down.
What ALPHA ONE ROOFING INC says about itself
Taken from the business’s own website. We have not checked any of it. These are quotes, not credentials — a roofer writing “licensed and insured” on their homepage is not evidence that they are.
Licensed
“…to content BAY AREA • CSLB #1106302 • LICENSED • BONDED • INSURED • 510-904-2024…”
Insured
“…A • CSLB #1106302 • LICENSED • BONDED • INSURED • 510-904-2024 PROTECTING WHAT MATTER…”
Bonded
“…BAY AREA • CSLB #1106302 • LICENSED • BONDED • INSURED • 510-904-2024 PROTECTING…”
States years in business
“…• INSURED • 510-904-2024 ABOUT US With more than 20 years of experience, we provide reliable…”
Free estimates
“…• HOA & Residential Experts GET A FREE QUOTE Clients we have worked with Certified…”
Other roofers in San Leandro
Ranked by how many ratings Google has counted.
| Roofing contractor | Google average | Ratings counted | One and two star | Contact |
|---|---|---|---|---|
| Manada Roofing Companynew gutters, attention to detail, estimate4.428 ratings14.3% one and two star(510) 780-9517 | 4.4 | 28 | 14.3%4 of 28 | (510) 780-9517 |
| Moctezuma Roofingroof replacement, timely completion, solar panel expertise4.825 ratings4.0% one and two star(510) 414-9004 | 4.8 | 25 | 4.0%1 of 25 | (510) 414-9004 |
| Andy's Roofing Company, Inc.quality of work, roofing company, skilled4.725 ratings4.0% one and two star(510) 777-1100 | 4.7 | 25 | 4.0%1 of 25 | (510) 777-1100 |
| Ridout Roofing Co Incroof patch4.319 ratings15.8% one and two star(510) 351-1922 | 4.3 | 19 | 15.8%3 of 19 | (510) 351-1922 |
| State Roofing Systemsreckless driving4.316 ratings18.8% one and two star(800) 377-7663 | 4.3 | 16 | 18.8%3 of 16 | (800) 377-7663 |
| RK Roofing & Construction Inc.quality work, courteous staff, impeccable communication5.011 ratingstoo few to compare(510) 902-7663 | 5.0 | 11 | —too few | (510) 902-7663 |
Where this page comes from
Every figure above is Google’s, captured on 24 September 2026. The star average and the 3 ratings behind it are counted by Google across all of its reviews. The review text on this page is a sample — we hold 3, of which 2 have any text — and it is not everything Google shows.
Roof Warden does not verify licenses, bonds, insurance or workers’ compensation cover, and nothing on this page should be read as though we had. Confirm those directly with the contractor and with your state or provincial licensing body before you hire anyone.
There is not much data on ALPHA ONE ROOFING INC. A short record here means our capture found little — not that there is nothing to find, and not that the business is new or inactive.