Construction Company reviews in Oakland, California

We had minor water intrusion from an exterior staircase that leads to a rooftop deck on our San Francisco home. The original stair finish was a fabric-and-latex system that wasn’t meant to be a wear surface, and over time it started to fail.

After doing some research, we found Westcoat and decided their ALX™ system was the right solution. Westcoat referred us to M 7.24 Builders as a certified installer, and we couldn’t be happier with how things turned out.

Enrique responded quickly, came out for measurements and photos, and had the job scheduled within just a few weeks. As the project moved forward, we added some much-needed railing repairs to the scope, which they priced fairly and handled smoothly.

The crew was fantastic—professional, respectful, and incredibly clean. Since they had to bring materials through the house, I appreciated how careful they were in protecting the interior.

The finished project exceeded expectations. If you need deck waterproofing or exterior work done right, I highly recommend M 7.24 Builders.

They're a licensed contractor and do much more than Westcoat systems. They're knowledgeable, flexible, and resourceful—well worth considering for other construction needs as well.

I'm including some before and after photos of stairs.

Henry and Dionne are great! M7.24 completed our laundry room renovation, which was our very first renovation project. Henry provided a very fair estimate and was available throughout the process if we had any questions. Throughout the project, Henry and his team were communicative, efficient, and flexible--especially as we were trying to coordinate weekend and holiday schedules. They made our project feel as streamlined and smooth as possible, and we'll definitely contact them for future projects!

If I could give 10 stars to Misael and Carlos and his entire crew at Castillo Bay Builders I would. I was absolutely blown away by the ADU they built. It's better then I even imagined. Their attention to detail, professionalism, work ethic, responsiveness, and joy in building is on a level I've never seen in builders and contractors. I can't recommend them enough!

Misael and the Castillo team did an excellent job from start to finish with our new ADU construction. It was beautifully and efficiently built in less than 6 months. We have been using the ADU daily for a year now and everything is holding up well. After the ADU was done, we hired Castillo Bay Builders again to redesign and re-landscape our backyard, side alley, and front entryway. We have recommended CBB to several friends, and we would love to work with them when we need more home upgrades in the future!