02/27/2026
Combining two apartments in NYC can create an exceptional home — but the process is more complex than many people expect.
Apartment combinations often require co-op or condo board approval, NYC Department of Buildings filings, structural review, and careful coordination of plumbing and building code requirements.
When handled properly, the result can feel seamless. When rushed, projects can face unnecessary delays.
I wrote a detailed guide explaining how apartment combinations work in New York City and what homeowners should understand before starting.
https://fontanarchitecture.com/combining-apartments-in-nyc/
In New York City, combining adjacent apartments is often the most effective way to create a larger, cohesive residence within an established building. For