In a 1950s Bayside Cape Cod, the three priorities for a pre-purchase inspection are: copper supply lines (now 70 years old — check for pinhole leaks and green corrosion at fittings), the boiler or furnace (oil systems from the 1970s–1980s are due for replacement, and a full oil heat system has additional components like the tank that need evaluation), and the cast-iron DWV (which holds up well but can crack at horizontal runs from soil movement over decades). A plumbing and heating inspection before closing typically costs less than the first unexpected repair after.
A simple test: check if cold water pressure is also low throughout the house, or only hot water pressure is reduced. If both are low equally, the supply pipes are the likely cause — galvanized narrowing affects both hot and cold. If cold pressure is normal but hot is low, the problem is specific to the hot water side — either a kinked flex supply to the water heater, a failing pressure-reducing valve on the hot side, or sediment buildup in the water heater's dip tube. Each has a different fix; we can diagnose which it is in one visit.
Call or send a message. We're about 30 min away.