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Bay Valley Roofing & Solar

4.2 (65 reviews)
Closed 7:30 am - 5:00 pm
Updated 2 months ago

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Services - Bay Valley Roofing & Solar

Roof cleaning

New roof installation

Roof repair

4 More Services

Roof replacement

Reroofing

Solar system installation

Solar shingle installation

Bay Valley Roofing & Solar Photos

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Recommended Reviews - Bay Valley Roofing & Solar

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Reviews With Photos

Enjoying our finished room!

When it comes to picking a construction company it boils down to two questions really. What is the quality of their work? Are they fair and responsive to customers? Bay Valley earns five stars from us on both accounts for the job they completed at our house. Here is why... We accepted the bid from Mr. Raul Diaz because we appreciated his candid, transparent communication about costs. We had been warned that construction companies often execute multiple surprise change orders to increase their profits throughout a job, but this never happened with Bay Valley. The one increase in cost that was unexpected was understandable and due to observable issues with our electric system infrastructure. As Mr. Diaz had initially promised, we stayed on budget throughout the job. The quality of a company's work is the end result of many small choices. We were both present during the entire job. We watched each step of the way and saw that all of the lines were perfectly straight, and everything was made perfectly level at each step of the way. One of Bay Valley's greatest assets is a finisher who does meticulous work. He came in to put the finishing touches on the flooring, every single door, the molding around the doors, the aprons for the windows, and the finishes for the bathroom - all done perfectly. Bay Valley also worked with subcontractors who held similarly high standards - Baltodanos for texture and taping of drywall and S.Y. Electric were both top shelf companies that did excellent work. In the end everything was done beautifully. We are 100 percent satisfied with how everything turned out. Also, this is important, because living in a house throughout a major construction job is an inherently stressful process. Never once did we witness any argument between anybody on the crew or with any of the subcontractors. Everybody worked cooperatively together with capable leadership and helpful communication from John Piermattei. Mr. Piermattei was wonderful to work with throughout the process. He was fair minded and a great communicator. For example, he warned us that there would be a lot of dust and then put up several high-quality dust shields that prevented nearly any dust from getting into the rest of our house. I noticed that the entire crew was really professional in the small things as well. For example, the worksite was always kept clean and organized. They never left over a weekend without putting their tools in a corner of the room in a neat and organized way and sweeping out the room. Every job will have a setback or two - this we accept as inevitable. Like any other job, this happened during the process. Here's why I mention this - you cannot know how a given company will actually treat you until you have a setback. The way that Bay Valley handled these setbacks was evidence to me that this company is dedicated to being decent, fair and reasonable with its customers. They communicated clearly with us and resolved each of the two setbacks in a way that left us feeling respected and treated fairly. Our understanding is that Bay Valley is transitioning to becoming the Bay Area's Premier roofing company. They will now be working on installing solar panels that are part of roofing systems in affiliation with a high-quality product made by GAF. We feel very fortunate to have been able to work with them before they made this transition. They made a beautiful room extension for us. If future customers have roofing needs or want to install these kinds of solar systems, we highly recommend Bay Valley as a company that is run with integrity and very high standards. 5 stars from us!

Rafi R.

We just finished our home's expansion (a very complicated project) done by Bay Valley Contractor's back in July. This was a not that so easy project. Both Bay valley contractors management and their staff member did a great job with excellent result. First of all they treated our home as their own home and were cleaning after themselves every day they finished their work even we didn't lived there during the construction. They were on top of things the whole time during the planing , permitting and construction process. It was a pleasure working with Both Raul (owner) and John (Manager, Forman) the entire time. Looking forward to work with them on the next project and enjoying some return costumers discounts from them.

Photo taken a week after the roof replacement completed
Michelle L.

We've hired Bay Valley contractors for a couple of roofs. We had good experience in the past however when we hired them for a roof replacement this April they did a sloppy job. - Ugly stucco patch. A couple of neighbors even came to tell me that "your roofer did a terrible job with your wall, are you going to repaint?" - When they took down the old gutter a bit of wall damage occurred. They should have painted the exposed stucco before adding the new gutter but they didn't. Now it's very hard for us to paint the stucco to avoid water damage without taking those gutters down! - They left a huge mess in our attic. I didn't know about it because they picked up in the yard. When my electrician told me that our attic is covered in roofing debris I couldn't even believe it. He said the roofer should have protected it with a tarp and it's unusual that it's left so dirty. I uploaded the photos my electrician took to show me, but it's actually worse than the photos can show. - They also left roof debri in the gutter, which can clog our new gutters - The estimator gave us a verbal estimate on lifting the solar panels (by a third party provider) but never provided us a written contract, until the day before the take down. They called and said the solar take down would be $6000 (in addition to the roof replacement charges) instead of the $3000 that we were told before. With this change we decided to evaluate other options including getting new solar panels. We wanted them to inform us the exact cost of the different sizes of the solar panels in order for us to decide, but they said "You just need to tell me that size of the panel you want. Our workers are ready to start the job and you have to decide now!" without even telling us how much it would cost. We were firm that we are not starting the job unless we know how much will have to pay, and finally an hour later we received the solar contract in the email. The solar part was done by a third party but the estimator of Bay Valley recommended the provider and was supposed to coordinate for us. It could have been much less stressful if he didn't wait until the last day to tell us about the big price change. Although the review on the company is overall negative, i would like to mention that the owner Raul had been extremely professional and courteous as usual. Maybe it's just hard to maintain the quality of the crew with the expansion of business.

New roof

We had them replace our roof. They were not the cheapest bid we received, but we were very impressed by their quality product and 50 year guarantee. Everyone we worked with was very professional. We had no conflicts and necessary change orders were clearly explained and priced fairly. The job was completed in a reasonable time frame. We were really impressed with their clean-up ethic. We definitely recommend Bay Valley Contractors for roof work.

Metal roof by Gerard and installed by Bayvalley Contractor.

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Ask the Community - Bay Valley Roofing & Solar

Review Highlights - Bay Valley Roofing & Solar

When what I thought was a pretty standard roof job got complicated, Jose, Raul, Dean and team never blinked.

Mentioned in 20 reviews

Read more highlights

Symplify Roofing

Symplify Roofing

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**If I could give more than 5 stars, I would!**…read more Simplify Roofing did an absolutely outstanding job on my roof in early 2025. From start to finish, the entire experience was smooth, professional, and genuinely stress‑free -- which is saying a lot when it comes to roofing projects. Their communication was excellent. They walked me through the entire process, answered every question clearly, and were always punctual and reliable. The crew treated my home with care, kept the worksite tidy, and finished right on schedule. Most importantly: the quality of their work is exceptional. My roof looks fantastic, and you can immediately tell they take pride in doing things the right way. It's rare to find a company that is this honest, efficient, and committed to craftsmanship. If you need roofing work done, *don't hesitate*. Simplify Roofing is truly top‑notch. Highly, highly recommended!

Ethan and his team were knowledgable, professional, clear in explaining options, never pushed or…read moretried to sell me, and really stood out from the 10 other estimates we received simply by listening. Unlike others, Ethan knew exactly what type of roof we had, took the time to look at our neighborhood, and listened to my preferences and hopes for the project. The roof installation itself was quick, without hassle, and were respectful of our home, cleaned up thoroughly, and even kept things tidy inside while installing two skylights. We would definitely recommend reaching out to Ethan and Simplify Roofing, at least including them in your estimates. They really set the bar for how this kind of work should be done!

Equinox Roofing - New Shingle Roof

Equinox Roofing

(235 reviews)

Getting two new commercial roofs was a big deal for my partnership and there are lots of details…read morewhich concerned us. We went with Equinox and I am so happy we did-the price was excellent, the job was done really well, we had two commercial tenants which required specific scheduling and they were well accommodated for, and both roofs look great and, since its been a few months with rain, we know they are both sturdy. I could not be more satisfied and we have a couple of projects coming up in the next year and will definitely use them. We now have a roofer for any needs. My highest recommendations for Ben and Equinox!

We recently had our entire roof replaced by Equinox Roofing and had a really positive experience…read morefrom start to finish. Dave was our project manager and he was great to work with. He explained the process clearly, answered all of our questions, and kept us updated throughout the project. The crew was always on time, very professional, and respectful of our property. They worked efficiently and what stood out to us was how clean they kept the area around the house during the project. At the end of each day they made sure everything was picked up, which we really appreciated. The project moved along smoothly and the roof replacement was completed within the timeframe we were given. The finished result looks great and we're very happy with the quality of the work. For a full roof replacement, the pricing felt fair for the quality and service we received. Overall, it was a solid experience and we're glad we chose Equinox Roofing for the project. Adding here pictures Dave were sending to us throughout the whole process.

Bay Valley Roofing & Solar - roofing - Updated May 2026

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