Window repair for NYC apartments and buildings
Foggy and broken glass, sashes that won't stay up, drafts. We issue the COI your managing agent asks for and reach upper floors from outside when the glass can't come through the apartment.
- Free estimate from photos
- Reply within 2 hours on business days
- $11M insured
- COI in 24-48 hours
What failed on your window?
Each page covers the causes, the fix and what to expect in an NYC apartment.
Send photos for a quote- Window Repair Services NYC
Foggy glass & condensation
Foggy glass & condensation
Fog between the panes means the seal failed.
We replace the insulated glass unit and keep your frame.
Broken & cracked glass
Broken & cracked glass
Cracked or shattered panes, matched for thickness, tint and Low-E coating.
On upper floors we can set the glass from outside.
Stuck & hard-to-open windows
Stuck & hard-to-open windows
Painted shut, swollen or off the track.
We free the sash, clean the track and realign it.
Drafty & leaking windows
Drafty & leaking windows
Worn weatherstripping, failed caulk, water at the sill after rain.
Balances, locks & tilt latches
Balances, locks & tilt latches
A sash that drops or won’t stay open has a failed balance.
We replace balances, tilt latches and locks with OEM parts from Andersen, Pella and Marvin.
How a repair goes
- 1
Send photos
The window, a close-up of the failed part and the brand label if there is one.
- 2
Get a quote
Before anyone comes out. We reply within 2 hours on business days.
- 3
COI for your building
Within 24-48 hours, naming the building and the management company.
- 4
The repair
Parts and glass units that have to be made or ordered mean a second visit, so plan apartment access for both.
Window balances carry a 2-year warranty.
Repair or replace?
Repair
The frame is sound. Seals, glass units, balances and hardware are replaceable parts, and most repairs only need a COI for the managing agent.
Replace
The frame is rotted or bent. In a co-op or condo, replacement usually goes through the alteration agreement. See window replacement in NYC.
How we work in NYC buildings
COI in 24-48 hours
Certificates of insurance naming your building and management company as additional insureds, plus a site-specific safety plan if the building asks for one. $11M liability coverage.
Only the failed part
A new glass unit goes into the existing sash. Frames, trim and walls stay where they are.
OEM parts
Andersen, Pella, Marvin, Skyline. Balances and hardware are matched to the window, not adapted.
Clean apartment
Shoe covers, drop cloths, and the old glass leaves with us.
Access & safety
Every job starts with a site-specific safety plan and OSHA-compliant procedures.
Upper floors from outside
Upper floors from outside
SPRAT-certified rope access and our own aerial lifts up to 300 ft. No scaffolding, no waiting on a rental.
Landmarked buildings
Landmarked buildings
Original profiles matched, documentation prepared for LPC review.
Photos before a visit
Photos before a visit
Send photos of the window, a close-up of the failed part and the brand label if there is one. Most seal and hardware failures can be quoted from that.
Who we repair for
A pre-war co-op, a brownstone and a storefront need different paperwork and different crews.
For property managers
- Photo assessment: Video or photos for a quick quote.
- COI in 24-48 hours: Naming the building and the management company.
- Safety hardware: Window limiters and locks.
- Tenant scheduling: Repairs planned around residents and building work hours.
For homeowners
- Save the frame: A new glass unit costs far less than a new window.
- Drafts and locks: Drafts sealed, locks and sliding doors repaired.
- Technicians: Uniformed and background-checked.
For retail & showrooms
- Emergency board-up: 24/7 response to secure broken storefront glass.
- Large glass: Tempered panels and door hardware, including floor closers.
1010+ excellent Google reviews
- ★★★★★
They did the windows for my store !! Incredible job and so professional
Karley FreitasOctober 29, 2026 · Google
- ★★★★★
Very good. Technicians were prompt, neat, and did a great job. Windows look terrific.
Jory B ZimmermanOctober 29, 2026 · Google
- ★★★★★
Sergio and Sergio did a wonderful and professional job. I highly recommend them.
Jennie EmilOctober 29, 2026 · Google
- ★★★★★
Big Apple had been cleaning my apartment window for 4 years on an annual basis and have always provided excellent service. They are timely, communicative, friendly and priced well. It’s always a pleasure.
Laura Smith SacklerOctober 27, 2026 · Google
- ★★★★★
Sergio & Sergio were wonderful! Thank you so much!
Taylor BosOctober 26, 2026 · Google
- ★★★★★
Very professional and courteous team. They are well organizer and very tidy, wear shoe protectors and bring covers for the floor. The job is impecable, our windows are now sparkling clean. Will use then again in spring. I highly recommend them.
Honest ToysOctober 23, 2026 · Google
Window repair questions
-
How much does window repair cost in NYC?
It depends on what failed, not on the window. A balance or a lock is a part and a short visit. A foggy double-pane unit is made to measure, so it usually takes a second visit. Glass on an upper floor that can’t be carried through the apartment adds the cost of access from outside.
Send photos and you get a quote before anyone comes out. What drives the cost of each repair is on the foggy glass, broken glass and window balance pages.
-
Should I repair the window or replace it?
If the frame is sound, repair. Seals, glass units, balances and hardware are replaceable parts. Replacement makes sense when the frame is rotted or bent.
In a co-op or condo, replacement usually goes through the alteration agreement; most repairs only need a COI for the managing agent. More on window replacement in NYC.
-
Why are my windows foggy?
If the fog is between the panes, the seal around the insulated unit failed and moist air got in. Wiping won’t reach it. The unit gets replaced, the frame stays. Fog on the room side is indoor humidity. See foggy glass in co-ops and condos.
-
Can windows be replaced from the outside?
Yes, and on some buildings it’s the only way: the unit is too big for the apartment door, or the glass is set from the exterior. We use SPRAT-certified rope access and our own aerial lifts up to 300 ft, without scaffolding.
-
What does my managing agent need before you start?
Usually a certificate of insurance naming the building and the management company as additional insureds, sometimes a site-specific safety plan. We issue both within 24 to 48 hours. Coverage is $11M, including NY Labor Law 240/241 with no Action Over exclusion.
-
Do you repair windows in landmarked buildings?
Yes. On a landmarked building, work that changes how a window looks from the street needs Landmarks Preservation Commission approval. We match original profiles and prepare the documentation. See historic window repair.
Send photos, get a quote
200+ NYC buildings use us for exterior maintenance.
While we’re on-site
Our technicians identify early signs of wear before they turn into costly repairs.
Torn screens?
We custom-fabricate and install exact-fit replacement screens, including premium TruScene® micro-mesh to keep out the smallest NYC pests.
See screen solutions
Facade work coming up?
We give your inspector close-up access under Local Law 11 and do the repairs.
See Local Law 11 support