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Happy with the service at Big L?

We would love to hear about your experience working with the experts at Big L. Write us a review and let us know how we did!

Big L: 40 years Strong

Year Round Installation

Our Dedicated team of installers are Big L employees who work year-round installing windows and doors. Our promise is to provide you not only with a professional quality job done right, but also with our ongoing Total Trust Guarentee for the life of your new investment.

Hassle-Free Financing Options

We make it easy to realize your dreams today! Big L offers a variety of great financing options including "same as cash" financing with no interest and no payments for one year.

WELCOME TO BIG L
WINDOWS AND DOORS

Best replacement windows in Buffalo and Western New York State

If It's a Window or Door, Our
People Know More

Customer Reviews

Nathan Wiley
Nathan Wiley
22:18 21 Apr 19
The service was bad, choosing them was a “big L”
Linda Tatu
Linda Tatu
10:28 07 Dec 18
I love my new windows. The workers were quick, clean and considerate. The end product looks great.
Bryan S
Bryan S
18:05 05 Dec 18
Got two new windows in our family room. Amazing customer service from start to finish! Completely transformed our living room. Great company that stands behind their products! Highly recommended
Sue E
Sue E
21:11 30 Aug 18
Great Customer service, salesman Chris bent over backward to ensure we got what we wanted. Installer Bob O Brien was phenomenal, professional and spotless, as was his assistant. Love this company and will order more windows and doors soon!
Kelsey Williams
Kelsey Williams
23:12 25 Aug 18
The salesman, Xander, was wonderful to sit down with. I got another quote elsewhere but felt most comfortable with Big L. The installers were all very nice and professional! My experience was wonderful and I will always recommend this company !
Rob Smiley
Rob Smiley
21:57 23 Mar 17
One of the best companies I've ever dealt with great customer service and great installation from beginning to finish the installers did a great job and kept it real clean
Mike Santoro
Mike Santoro
18:05 24 Sep 16
one of Buffalos oldest continually ran window and door installers with a good track record. Just installed windows on my customers home and did a swift, neat and professional job
jeff worden
jeff worden
17:50 06 Jul 16
Big L claims to be the only place locally that carries Marvin windows, and so they advised that we need to pre-order and put a deposit down on replacing a vandalized window. We have left them multiple messages with no contact back over the past couple of weeks. There service is terrible, and considering this was an incident of no-fault to us, you'd think they would take pride and deliver good customer service. It's a pathetic way to run a business, and I will certainly be advising friends to not give them any business.
Egon Moldenhauer
Egon Moldenhauer
12:27 29 Jun 16
Rinki Maurya
Rinki Maurya
23:55 15 Sep 15
Next Reviews

Big L Windows & Doors in greater Buffalo, NY offers home window replacement and home door replacement featuring Marvin windows & doors for homeowners & builders. Our extensive selection of cutting edge products deliver unmatched beauty and state-of-the-art performance for energy savings, reduced maintenance and a more comfortable home.

Big L Windows & Doors delivers a wide array of custom-made styles, decorative options, complementary trim selections, and performance packages for a fully customizable solution to suit your individual needs.

We have a reputation for making a Big difference – a Big difference in sales, service, installation, and products.

Our professional approach, highly trained staff, and affordable pricing will help take the stress and confusion out of your new project.

View our home window replacement & door products and professional services.

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