Louis L. Buttermark & Sons Inc. is a trusted name in commercial plumbing, proudly serving all five boroughs of New York City from our Staten Island, NY, headquarters. With a legacy dating back to 1961, we’ve handled everything from routine commercial plumbing alterations to complex infrastructure upgrades for high-profile properties.
Whether it’s a school renovation, hospital expansion, or medical gas system installation, our licensed team brings precision, experience, and reliability to every job. Call us today to discuss your next project with a team that’s been getting the job done right for over 60 years.
Commercial Plumbing Work That Holds Up in High-Stakes Environments
Our projects include standout jobs like the restoration of St. Patrick’s Cathedral, the Staten Island Mall expansion, and NYU medical facilities — including emergency department upgrades and medical gas systems. We don’t subcontract, and we never cut corners. You get direct communication with a licensed team that handles installations, excavations, and all necessary commercial plumbing solutions.
Medical Gas Systems for Hospitals and Universities
Plumbing for New Construction, Renovations & Facility Expansions
RPZ Testing & Backflow Preventer Installation (Required for Businesses)
Plumbing Upgrades for Schools, Medical Facilities, and Retail Spaces
Commercial Water Heater Installations
Custom Piping Systems & Commercial Fixtures
A Legacy of Integrity & Licensed Expertise
We’re not just another plumbing company — we’re a union-rooted, family-operated business with decades of experience and three active Master Plumbing Licenses (#840, #817, #1283). Our commitment to quality has earned us the trust of building owners, contractors, and institutions across NYC. From backflow compliance to full-scale piping projects, Louis L. Buttermark & Sons Inc. is ready to support your commercial property with precision and professionalism.
