Enhance your home's comfort, energy efficiency, and curb appeal with premium replacement windows professionally installed by our experienced team.
Our friendly experts are here to guide you through every step—from choosing the right products to ensuring a smooth, hassle-free installation experience.
At American General Windows & Renovations, quality craftsmanship has always been at the heart of what we do. What began as a personal passion for building and creating has grown into a trusted home improvement company serving homeowners throughout New Jersey.
Over the years, we have built a team of experienced craftsmen and professional installers who take pride in every project. From windows and doors to siding, roofing, decks, and more, our goal is to deliver work that is built to last and a finished result you can feel proud of.
We would be honored to welcome you into the American General Windows & Renovations family of satisfied customers.
Top-quality products installed by experienced professionals.
Skilled craftsmen dedicated to exceptional workmanship.
We are committed to customer satisfaction from start to finish.
Serving homeowners throughout New Jersey.






Very knowledgeable and also pleasant, very good, reliable work. Screen door was made to fit and took 2 weeks to arrive.
We had a waiting period which was specified in advance as the door opening for the door & screendoor we were replacing was an odd size and they had to be special made. Once the material arrived Lenny made an appointment and the work was done in a timely and professional manner. We are pleased with the quality of the product and the workmanship.
My overall experience with American General Windows & Reno was really great. Lenny Berk, the owner showed up for estimate appt was right on time. Lenny provided a detailed estimate and it did not take long at all to get the materials installed. His installers were very professional and everything was completed and cleaned up in one day. All garbage was also removed by the installers. While the installation was in progress, Lenny was on site numerous times during the day to check up on the progress. I would highly recommend this company to anyone & I would use them for any further reno needs.
Lenny Berk was a pleasure to work with from the initial quote to the final day. He took an extra trip to the house to ensure the measurements were correct. He and his workers were immaculate - I think my basement is cleaner after they left than before they got there. The quality of the windows is outstanding. We considered glass-block, but these the same price, are exolite (a clear, hard plastic for safety) and look like the high-quality windows they are. They fit with the dutch colonial look of the house perfectly. We initially got a quote for more windows and couldn't afford to do them all at once, so will definitely be going back to Lenny & American General to finish our basement and move on to the upstairs. I also really appreciated that Lenny didn't give us a hard time about reducing our order after we got the quote.
It went great - job was done exactly as promised, at the price that was agreed upon, and working with Lenny Berk, the company owner, is a pleasure. I tend to ask a lot of questions before I have a job done, and Lenny is not only knowledgeable but extremely patient as well. I trust Lenny completely both as a person and as a professional and I know I will use his company's services again.
I was extremely pleased with American General Windows & Revovation's performance. Not only did they perform quality work, they communicated well (featuring on-time appearances), and they absolutely managed my expectations ... then delivered as promised. Their attention to detail and clean-up after completing the work earns applause. Owner (Lenny Berk) is totally hands-on -- a terrific attribute with a terrific attitude. In other words, you are speaking directly with the boss and decision-maker. The materials used were of the highest quality. The workmen were job-focused and courteous. American General Windows & Renovation is a "turn-key" operation. All in all, I was delighted with their overall operation and highly recommend them.
Lenny Berk was a pleasure to work with from the initial quote to the final day. He took an extra trip to the house to ensure the measurements were correct. He and his workers were immaculate - I think my basement is cleaner after they left than before they got there. The quality of the windows is outstanding. We considered glass-block, but these the same price, are exolite (a clear, hard plastic for safety) and look like the high-quality windows they are. They fit with the dutch colonial look of the house perfectly. We initially got a quote for more windows and couldn't afford to do them all at once, so will definitely be going back to Lenny & American General to finish our basement and move on to the upstairs. I also really appreciated that Lenny didn't give us a hard time about reducing our order after we got the quote.
Lenny Berk, the owner, gives the estimate and is there during the entire job. He is really great - very responsive, professional, thorough, a true delight to work with. His pricing is good, he sells only quality products, and his service beats all. He does not badmouth previous contractors who installed your old windows, even when they deserve it! He delivers on time, and his workers show much respect for your house and belongings. They protect your carpet and your furniture during the job. Lenny goes way out of his way to make sure he keeps his word. On a recent job, at my request, he personally removed all of our alarm connections from the old windows that were going to be trashed. He follows up on all complaints and tries very hard to keep the customer happy. I have dealt with many contractors over the years and none is as good to deal with as Lenny. I highly recommend him.
I have been doing business with American General for 7 years. The company has successfully replaced my windows, siding, front door and has finished the basement. The owner, Lenny, is extremely attentive to detail and strives to provide excellent customer support. If anything in the projects were not to my liking, Lenny was quick to provide a solution without the usual difficulties that you contractors provide. I would definitely have him back for additional renovations and you should too!