Commercial Plumbing
In a ground-floor kitchen on Ninth Avenue, a blocked waste line is not an inconvenience. It is a closed restaurant.
What is different about commercial work
The plumbing is not fundamentally different. The consequences are. A residential blockage is unpleasant for one household; a commercial one stops a business trading, and it usually does so at the worst possible hour. That changes what is worth doing in advance.
Restaurants and food service
The west side is dense with ground-floor food service, and those premises put more through a waste line in a month than an apartment does in years.
- Kitchen waste lines on a known cleaning interval rather than on demand. The interval comes from what the camera shows after the first proper clean
- Grease interceptors, where a functioning unit is what determines how often the line behind it needs work. Servicing the interceptor itself is a separate trade, but its condition is our first question
- Floor drains and trench drains, which block with solids rather than grease and need different treatment
- Hot water capacity, frequently undersized for what a kitchen actually demands once it is running
- Backflow protection, which food service premises are generally required to have and which often surfaces late in a fit-out. See backflow prevention
Retail and offices
Lower volume, but the failures are more visible. Public restrooms take abuse, and fixtures in them are worth specifying for durability rather than for appearance. Flush valves, faucet cartridges and stop valves are the recurring items. In an office the other standing risk is the pantry: a dishwasher or icemaker connection above a finished ceiling on the floor below.
Fit-outs and change of use
The storefronts along these avenues turn over regularly, and an incoming tenant inherits whatever the last one left behind, often including work that was done quickly. The moment to find that out is during the survey, while the lease terms and the build cost are still being negotiated.
What a survey establishes: what the existing waste and supply actually are and where they run, whether the drainage can take the intended use, what condition the existing fixtures and valves are in, and whether anything required for the new use is missing. See camera inspection.
Some work in New York City requires plans to be filed with the Department of Buildings before it can begin, which adds time to a schedule. Where your project reaches that threshold, we will say so at the survey rather than at the point of installation, so it can be planned around.
Mixed-use buildings
A building with apartments above a storefront has one drainage system serving both, and the two uses put very different demands on it. A commercial kitchen at the base of a residential stack is a known source of trouble upstairs, and it is worth the building understanding that relationship before the complaints start rather than after.
Work in occupied buildings comes down to coordination: agreed hours, access arranged in advance, protection of common areas, and clear notice to whoever is affected. See repiping for how larger jobs get phased.
Need this doing?
Call and describe the problem. You will get the price before anyone starts.