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Roof Warden

Roofing contractor

Cal State Roofing & Sheet Metal Company

509 Mayfair Ave, South San Francisco, CA 94080

Listed under San Francisco, CA

Google average
4.6
Ratings counted
11
One and two star
1 of 11
California median
Not comparable

The first three are Google’s own figures for Cal State Roofing & Sheet Metal Company, 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

4.6
11 ratings
How the 11 ratings break down, from five stars to one
5
1091%
4
00%
3
00%
2
00%
1
19%
9.1%of these 11 ratings are one or two stars (1)

Too few ratings to compare against other roofers — at 11 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 Cal State Roofing & Sheet Metal Company. 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.

What reviewers keep mentioning

Topics Google extracted from this business’s reviews, with how many mention each. These are words that appeared in reviews, which is not the same as a service the business sells.

  • project3
  • roof replacement3
  • communication3
  • efficient work2
  • quotes2
  • pricing2
  • workmanship2
  • gutters2

Other reviews we hold

10 more of the 10 reviews we hold text for, most recent first. We do not hold every review Google has.

  • 5 out of 5DJP DJPa week ago

    South Bay Single Family House, needing a new roof, insulation. Very professional and recommend. Very communicative, understanding of my budget. I always go with a referral but in this case I didn't know anyone in roofing. I gemini'ed AI my needs for insulated roof and foam boards and wanted a qualified contractor in the area. Cal State Roofing was the third one. The first two companies: the first didn't do residential and the second was in San Jose and willing to come up. Luckily bc Noah showed up answered my questions, provided me with a quote, (very reasonable) and gave me dates. I ran quotes with three others in the area, Cal State was not the cheapest but they were the most transparent, value add, and trustworthy. I didn't feel like being sold by a sales person.

  • 5 out of 5Anand Pattabiraman (Mochi)2 weeks ago

    We just redid our roof with Noah and I had a fantastic experience. We had gotten quotes from him over the last few years and when we finally pulled the trigger, we felt he gave us the fairest price and had the fairest recommendations about …

    Google cut this review short. The full text is on their Google profile.

    Reply from the business

    Thanks so much for this - it really made my day. I truly appreciate you taking the time to share all of that. It’s means a lot to hear that my honest and practical approach made a difference. I always try to recommend what’s best for the homeowner, not just most expensive options. Thanks again and if you ever need anything, or even just have a question , you know where to find me ! Noah Choi

  • 5 out of 5Lauralee Sciaroni6 months ago

    We had to have our entire roof replaced! Their prices were good and their service was outstanding. Any questions I had or any repairs I didn’t quite understand, Nosh was right there to explain everything to me. Their workers are excellent. …

    Google cut this review short. The full text is on their Google profile.

  • 5 out of 5k c8 months ago

    I was referred to Cal State Roofing and Sheet Metal by my neighbor, who had their roof replaced and had a great experience. After working with them myself last December, I completely agree with the recommendation. From the start, Noah was extremely helpful—he clearly explained the entire process, helped me choose the right materials, and answered all of my questions. The installation went smoothly. The crew arrived on time, worked efficiently, and cleaned up the area thoroughly at the end of each day. At one point, some debris fell onto my neighbor’s property, and the team immediately took responsibility and cleaned everything up, which I really appreciated. A few months after the project was completed, I suspected a possible leak near the gutter. Noah was very responsive—he came out quickly to inspect and confirmed that there was no leak. His follow-up and willingness to check on the issue shows how much they stand behind their work. The roof looks great, and the overall workmanship and customer service have been excellent. I’m very satisfied and highly recommend Cal State Roofing and Sheet Metal to anyone looking for a reliable and professional roofing contractor.

  • 5 out of 5Lillian B. Archera year ago

    We found Noah and Cal State Roofing by chance—just saw his truck on the street—and I’m so glad we did! From start to finish, Noah was fantastic to work with: incredibly detailed, clear in his communication, and responsive before, during, …

    Google cut this review short. The full text is on their Google profile.

  • 5 out of 5Morgan Hudsona year ago

    The entire Cal State Roofing team truly exceeded our expectations and our expectations were sky high. Noah, our team lead, was detailed, communicative and had impeccable follow-up. We trusted him from the jump and weren't disappointed. Our project was on time, remained in scope and turned out great. Thanks Cal State Roofing!

  • 5 out of 5Jack Mui2 years ago

    Noah is very knowledgeable and got the job done earlier than anticipated. His crew was very nice and efficient. Overall I had a great experience. I would recommend Noah and his team for any roof work needed.

  • 5 out of 5Edwin4 years ago

    Good place

  • 5 out of 5Louis7 years ago

    I am very happy with the roofing repair and maintenance services provided by Cal State Roofing. Noah and his crew were professional and customer-oriented. Noah responded to my inquiry in a prompt manner and was flexible with scheduling for …

    Google cut this review short. The full text is on their Google profile.

  • 5 out of 5Diane Tom7 years ago

    Recently had my roof replaced by Cal State Roofing and can’t use enough superlatives to describe my experience and their work. From the first meeting with Noah to describe what would be done to the completion of the job I was in good …

    Google cut this review short. The full text is on their Google profile.

Other roofers in San Francisco

Ranked by how many ratings Google has counted.

Other roofers we list in San Francisco
Roofing contractor
Ace Roofing SF, Incleakage, skylights, courteous staff4.5170 ratings11.8% one and two star(415) 872-9300
Eco Smart Roofersolar panels, sustainability, free inspections4.9142 ratings1.4% one and two star(415) 240-9840
ELM Roofing Contractors Incflat roof replacement, inspections, respectful staff5.0135 ratings0% one and two star(415) 534-4396
7x7 Roofingleak, efficient team, quick work5.0128 ratings0% one and two star(415) 535-8170
Mr. Roofing, Inc.skylight repair, solar installation, gutter replacement4.7117 ratings6.0% one and two star(650) 832-9995
San Francisco Roofing Prohome, inspection, roof repair4.9110 ratings0% one and two star(628) 500-7390

All roofers in San Francisco →

Where this page comes from

Every figure above is Google’s, captured on 24 September 2026. The star average and the 11 ratings behind it are counted by Google across all of its reviews. The review text on this page is a sample — we hold 11, of which 10 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 Cal State Roofing & Sheet Metal Company. 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.