Central Builders Supply Inc

Not super helpful and argumentative. I tried to go here for a replacement part and the person I talked to seemed to just make everything more complicated and seems to be in a bad mood. I think if you know exactly the part number you need, they’re probably fine. But if you go in asking for a part that fits into another part you have, you’re wasting your time with this place.

Had an obscure, impossible to find adapter for a Japanese bidet install. Provided everything. Incredibly knowledgeable and well priced.

Would not recommend. They sold me a faulty replacement part. When I wanted to return it since the part broke during installation they laughed and said that this has never happened, even though the internet shows it as a common problem.

tl;dr: Well-stocked plumbing supply shop with a strong commercial focus, but still very welcoming to casual shoppers; standout staff make it especially beginner-friendly. This store is a bit of a hidden gem if you're working on anything plumbing-related, whether it's a full commercial project or just a home repair you’re figuring out as you go. While most of their inventory is geared toward contractors and professionals, I felt completely comfortable browsing as someone with minimal plumbing experience. What really stood out was the staff. They were not only friendly but also genuinely enthusiastic about helping someone new to the scene. I never felt rushed or brushed off, and their advice was practical without being pushy. That kind of service goes a long way, especially in a specialty

This is the Best plumbing store in San Francisco. If they don't have it in stock they can order it. Elson and Dan are the best. No one is better in the city.