Manhattan roofing for co-ops, condos, townhouses and businesses
Roofing in Manhattan is as much about logistics and paperwork as it is about the roof: board approvals, insurance certificates, sidewalk protection and building access. We handle all of it so the work stays simple for you.
- Co-op and condo board documentation prepared
- Certificates of insurance on request
- Flat roof repair and replacement: TPO, EPDM, PVC, mod-bit
- 5.0 from 154 reviews
GAF Master Elite®- Lic. #2129904-DCWP
Get your free roof estimate
Step 1 of 3Takes 30 seconds. A real person from our team calls you back, usually within the hour.
Alter Phase Roofing Contracting repairs and replaces roofs on Manhattan co-ops, condos, townhouses and commercial buildings. A 1,000 sq ft flat roof replacement in Manhattan typically costs $8,000–$22,000+, higher than other boroughs because of sidewalk protection, hoisting, building height and permit complexity.
- Free inspection with photosYou see exactly what we see
- Written price in 24 hoursItemized, no pressure
- Most roofs done in 1 dayTear-off to cleanup
- Up to 50-yr warrantyPlus 25 yrs on workmanship
Manhattan roofing services
Flat roof replacement
Tear-off, insulation to code, tapered drainage, new membrane and flashing, with cool-roof requirements met.
Roof & leak repair
Seams, drains, bulkheads, parapets and penetrations. Same-day response for active leaks.
Townhouse roofs
Brownstone and townhouse roofs, skylights and hatches, often in historic districts.
Co-op & condo buildings
Board-ready scopes, insurance certificates and scheduling around residents.
Commercial buildings
Retail, office and mixed-use roofs. See commercial roofing.
Inspections
Condition reports with photos for boards, managers and buyers. See commercial roof inspections.
What we take care of in Manhattan
- Building approvalsboard applications, alteration agreements and the documents managing agents ask for
- Insurancecertificates of insurance naming the building, owner and managing agent
- PermitsDOB filings, plus Local Law 92/94 and cool-roof review on full replacements
- LandmarksLandmarks Preservation Commission considerations for buildings in historic districts
- Logisticshoisting, sidewalk and neighbor protection, debris removal and quiet hours
Manhattan neighborhoods we serve
Upper East Side · Upper West Side · Harlem · East Harlem · Washington Heights · Inwood · Midtown · Murray Hill · Gramercy · Chelsea · Hell's Kitchen · Greenwich Village · West Village · East Village · SoHo · Tribeca · Lower East Side · Financial District · Battery Park City.
Managing more than one building? See our page for property managers, HOAs and co-op boards.
What roofing costs in Manhattan
Averages from our own jobs. Your exact price comes in writing after a free inspection.
New flat roof, installed · Manhattan
Flat roof replacement by borough (≈1,000 sq ft)
Alter Phase Roofing Contracting job averages, updated October 26, 2026. Your exact price comes from a free on-site inspection.
From first call to finished roof.
No pushy salespeople and no surprise bills. Every job follows the same four steps.
- Fast scheduling
We inspect your roof
We climb up, scan for hidden leaks with an infrared camera, find the real cause and take photos so you see exactly what we see.
- Within 24 hours
You get a written quote
Clear options, repair or replace, with materials, cleanup and permits itemized. No pressure.
- On your schedule
Our own crew does the work
Marke is part of every job. We protect your property and clean up every day.
- Final walkthrough
Warranty in writing
Up to 50 years on materials and up to 25 years on our workmanship, handed to you.
What Manhattan customers say
“Called them up thinking I needed a new roof and gutters. They stopped by the same day, gave me an assessment of everything and it turns out the roof was repairable. They didn't try to pressure me into any unnecessary work. Just simply he gave me a couple of prices depending on what I decided to do. They were able to schedule the job quickly for a few days later and by the middle of the afternoon everything was done and it looks great!”
“I called for an estimate for a new roof. The price they quoted was way below two other estimates I received. I was also told that it would take 1-2 days to complete. Everything Alter Phase Contracting Inc promised was delivered. They gladly supplied me with their licensing and insurance information. The warranty is printed on my…”
“Just WOW! I expected that this would take several days, they got my new roof done in just 1 day. The guys did a thorough job, from set up to clean up. The price quoted was the price I paid, no gimmicks. True Staten Islanders. My roof looks great, couldn't be more happier. Would recommend to anyone who asks.”
“Marke and his team did an excellent job on replacing my roof! He and his brother came to my house, climbed up the roof to investigate the condition unlike other contractors which were only using a drone to take pictures. He gave me honest opinion and options for replacing my roof. Great communication and very easy to work with during…”
“I called a few roofers & Alter Phase was the only one that returned my call promptly & showed up the next day to give the estimate. They were very detailed in their explanation and immediately put me at ease. They showed up 3 days later and did the work in one day. Every worker on the job was courteous and friendly. My house now…”
“10/10 would recommend! This is the second time I've used this company, and they've been excellent both times. The first time was a few years ago for a full shingle replacement. Most recently, I called them back to repair my flat roof and gutter system after a rough winter caused pooling and a leak. They came out the very next day to…”
Roofing: your questions, answered
Don't see yours? Call or text and you'll talk to someone who actually works on roofs.
(929) 370-1552Roofing: common questions
Why does roofing cost more in Manhattan?
Material hoisting, sidewalk protection, limited staging space, building height and more complex permits all add labor and time. A 1,000 sq ft flat roof that might cost $5,000–$13,000 on Staten Island typically runs $8,000–$22,000+ in Manhattan.
Can you work with our co-op or condo board?
Yes. Boards typically require a scope of work, certificates of insurance naming the building and managing agent, and a contractor application. We prepare those and plan the work around building rules and quiet hours.
Do you repair parapets found during Local Law 11 inspections?
Parapet and coping issues often come up during facade (FISP / Local Law 11) inspections, and roofing work at the parapet is part of what we do. For structural facade work your building's engineer will specify the repair.
Do you work on Manhattan townhouses?
Yes. Brownstone and townhouse roofs are similar to Brooklyn row homes: flat roofs, parapets and shared walls, which we work on every week.
Get an honest answer about your roof.
Free inspection, photos of what we find and a written quote. If it only needs a repair, we'll tell you.
Prefer to talk? Call or text, emergencies 24/7:
(929) 370-1552- Family-owned, Staten Island based
- Owner on every job
- Written warranties, permits handled
Get your free roof estimate
Step 1 of 3Takes 30 seconds. A real person from our team calls you back, usually within the hour.