A 1950s Staten Island home with unmodified original plumbing has copper supply that's now 70 years old and cast-iron DWV that's the same age. Copper from the 1950s is reaching the end of its reliable lifespan — pinhole leaks at fittings and elbows are the first sign. Cast-iron DWV from that era typically holds up well on vertical runs but may have cracked or scaled sections at the horizontal base runs. A pressure test and basement inspection will tell you which systems need attention without opening walls.
Adding a bathroom in a Staten Island two-family means rough-in for cold water supply, hot water supply, drain (connected to the existing stack or a new drain run to the main), and a vent. The drain routing is the key constraint — we need to establish where the new drain can connect with the correct pitch and how it ties into the existing system. We'll assess the layout and recommend whether to connect to the existing stack or run a new line, then provide a rough-in estimate with permit included.
Call or send a message. We're about 45+ min away.