Valley Stream wears out street by street
A house from the 1920s or 30s is on at least its third roof, second or third heating plant, and an electrical system that has been extended by every owner since. None of that is a reason not to buy — it is the reason to know which round of replacements this particular house is due for, because on these blocks the neighbours' recent bills are a preview of yours.
Lou's job is to put dates and conditions on those systems: how much life the roof covering has, what the boiler and its piping say about their age, and whether the panel has kept up with the house above it.
Related: What New York requires of the report · What an inspection costs · Schedule an inspection.