This is one of the most common things we hear from New York City residents — and it’s also one of the most misunderstood realities of living in this city’s housing stock.
In a Brooklyn brownstone, a Queens rowhouse, or a pre-war walk-up in the Bronx, German cockroach infestations rarely start with the tenant who’s calling us. They travel through shared pipe chases, electrical conduits, trash chutes, and the gaps in cracked plaster walls that connect your unit to the ones next to it, above it, and below it. A single infested unit in a multi-family building can seed an entire floor within weeks.
A tenant who treats their own apartment without addressing the building-level source will almost always see roaches return. This is why we inspect thoroughly before we treat. We’re not just looking at your kitchen. We’re looking at how this building is built, where the migration pathways are, and what’s actually driving the pressure into your unit. That context changes the treatment. And it’s the kind of knowledge that comes from 50 years of working inside New York City’s specific building stock — not from a national playbook written for suburban ranch homes.