Everything you need to know about ADUs.
Guides, zoning deep-dives, and case notes on backyard ADUs — written by the architects and project managers who file the permits for a living.
City of Yes ADU Rules for NYC Backyard Units
On December 5, 2024, New York City adopted City of Yes for Housing Opportunity, the most significant overhaul of residential zoning rules in a generation. Among its many provisions, one matters more than almost anything else for owners of one- and two-family homes: the city now…
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Can You Airbnb Your Backyard ADU in NYC? What Short-Term Rental Laws Mean for ADU Owners
It is one of the first questions NYC homeowners ask when they learn about backyard ADUs: can I list it on Airbnb? The appeal is obvious.
The Plus One ADU Program: Everything NYC Homeowners Need to Know
The Plus One ADU Program is the most significant public financing tool available to New York City homeowners who want to build an accessory dwelling unit.
What Happens to Your NYC Property Taxes When You Add an ADU?
If you’re considering building a backyard ADU (also known as a backyard cottage or granny flat), chances are someone has already warned you: “Your property taxes will go through the roof.” It’s one…
Can Your Property Have an ADU? How Haven's Eligibility Tool Works
Most NYC homeowners think about ADUs in one way: a small house in the backyard. But that’s just one of four possible ADU types you might be able to build.
NYC Homeowner’s Guide to Backyard ADUs (2026)
If you own a one- or two-family home in New York City, the zoning rules that govern your backyard changed fundamentally in late 2024.