The Upper West Side is defined by its grand pre-war apartment buildings, the Dakota, Ansonia, Beresford, San Remo, El Dorado, alongside dense rows of late-19th-century brownstones and townhouses. Most buildings have large flat roofs with extensive parapet walls, water tank platforms, bulkheads, cornices, and decorative copper or slate mansards visible from the street.
Co-op boards, managing agents, and townhouse owners on Central Park West, West End Avenue, Riverside Drive, Broadway, Columbus, Amsterdam, West 72nd, West 86th, and West 96th trust MLM for full flat roof membrane replacement, parapet repointing, copper cornice restoration, slate mansard matching, EIFS facade repair, and emergency leak response. We handle NYC DOB permits and LPC review in the Upper West Side and Riverside-West End Historic Districts.
Local details (10023, 10024, 10025, 10069): The UWS covers 59th St to 110th St between Central Park and the Hudson. Multiple LPC historic districts apply, Upper West Side / Central Park West, Riverside-West End, West End-Collegiate, Morningside Heights. Common issues we see: aging EPDM/built-up flat roofs at end of life, parapet wall brick failure and water infiltration, copper cornice corrosion, water tank and bulkhead flashing leaks, slate mansard slipping and broken tiles.
📞 Serving the Upper West Side, Lincoln Square, Manhattan Valley, Morningside Heights, and surrounding Manhattan neighborhoods. Call (516) 713-9199 for a free estimate.


The Upper West Side splits into two roofing problems. The brownstone and limestone rows off Columbus, Amsterdam and West End Avenue have small flat roofs behind a cornice, usually with a rear extension at a lower level, a skylight or two over the stair, and a hatch as the only way up. The pre war apartment buildings along Riverside Drive and Broadway are a different job entirely, with setbacks, bulkheads and terraces.
On the brownstones the leak is almost always at a transition. Where the main roof steps down to the rear extension, where the roof meets the cornice at the front, or around the skylight curb. These are small areas that take a lot of water, they were often detailed decades ago, and a patch over the top of a bad transition does not last a season.
Skylights deserve their own mention here, because so many of these houses have an original one over the stairwell. The glass is rarely the problem. It is the curb the skylight sits on and the flashing where that curb meets the roof. People replace the unit and keep the leak. We look at the curb and the flashing before anyone talks about replacing glass.
Riverside Drive, West End Avenue, Broadway, Amsterdam Avenue, Columbus Avenue and Central Park West, from Lincoln Square through Manhattan Valley to the Morningside Heights border.
The step down to the rear extension, the cornice line at the front, every skylight curb and its flashing, the hatch, the pipe penetrations, and the condition of any neighboring party wall coping. The inspection and the written estimate cost nothing.
Q: Do you handle UWS Historic District and LPC roof work?
A: Yes. The UWS has multiple LPC designated historic districts. We file LPC applications, work with Certificate of No Effect / Certificate of Appropriateness, and use period appropriate materials, slate, copper, terra cotta, for any visible exterior work.
Q: What ZIP codes do you serve on the Upper West Side?
A: We serve 10023, 10024, 10025, and 10069 covering Lincoln Square through Manhattan Valley. Free estimates throughout the UWS.
Q: Do you handle pre-war co-op flat roof replacement?
A: Yes. Pre-war UWS co-ops typically have large flat roofs with parapet walls, water tanks, bulkheads, and HVAC. We install full TPO, EPDM, and modified bitumen systems with manufacturer warranties, plus all detail work: parapet coping, bulkhead flashing, water tank platforms.
Q: Can you respond to emergency leaks on the Upper West Side?
A: Yes. We answer 24/7 and dispatch into Manhattan rapidly. Call (516) 713-9199 for active roof leaks, parapet emergencies, or co-op level urgent water infiltration.
Q: Why does my brownstone roof leak where it steps down to the rear extension?
A: Because that step is a transition, and transitions take far more water than the flat field of the roof. On Upper West Side brownstones it is one of the two most common leak points, along with the skylight curb. A patch laid over a failed transition detail rarely lasts a season, so the detail has to be rebuilt rather than covered.
Q: My skylight leaks. Do I need a new skylight?
A: Usually not. The glass is rarely the problem. It is the curb the skylight sits on and the flashing where that curb meets the roof. People replace the whole unit and keep the leak. We look at the curb and the flashing first and tell you honestly whether the unit itself needs replacing.
Q: Do you work on Upper West Side co op and apartment buildings as well as brownstones?
A: Yes. The pre war buildings along Riverside Drive and Broadway have setbacks, bulkheads and terraces, which is different work from a brownstone roof. We provide a written scope and the insurance documentation a board or managing agent will require. Call (516) 713-9199.
MLM Construction Group works out of 1717 Avenue P in Brooklyn, NY 11229. Upper West Side is inside our regular service area, so estimates and emergency calls there are handled by the same crew, not subcontracted out.
Highest possible Better Business Bureau rating. Verified track record of pre-war co-op, brownstone, and historic district work on the Upper West Side.
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Licensed & Insured. We pull NYC DOB permits, file with LPC for historic districts, and meet all Manhattan high rise requirements. Full liability and workers' comp.
Active leak on the UWS? We respond fast, nights, weekends, and holidays. Call (516) 713-9199.
Every major installation backed by our 20-year workmanship warranty plus manufacturer materials warranty.
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