I had O'Sullivan Installs put siding on my house almost 3 years ago. Shortly after install a few pieces began to warp. I contacted Tim (owner) to report the issue. He told me he would send someone out to match the prices to replace the warped pieces. The exact lot cannot be matched and Tim told me that it would be a warranty issue with the manufacturer. He told me this about a year ago! It is ridiculous! Tim is hoping I forget about this while keeping my money and not standing by his promise. I would not recommend using this company. read more

I have hired O'Sullivan to replace 10 windows in my home and re-side the entire house. Siding work has not yet started but last week the windows were done and I just had to write a review on the spectacular work O'Sullivan has done. Everyone I have worked with so far--Brian, Melissa and Tim--have provided outstanding service and support. The windows look incredible. I thought I was going to miss my old wood (super inefficient) windows and that vinyl was somehow going to look cheap but it couldn't be further from the truth. From a windows perspective, they only use quality products. The windows look incredible from both the inside and outside, and our giant picture window is a statement piece in our living room. I especially want to make a shout out to the window install crew, Vlad and his team. They were super professional, arrived and were done on time, and best of all, I can honestly say the house was as clean, if not cleaner than I had left it. Both my husband and I were expecting to come home to a construction site and that could not be further from the truth. Thanks guys! Can't wait for my new siding! read more

I had 13 new Provia windows installed in my home yesterday, by two men from the "O'Sullivan Installs" company. They did an outstanding job, working very hard all day, and they were able to finish the installation in just one day, which is what I was hoping for. The entire process went very smoothly, from the initial sales call at my home, to the final installation, I couldn't be happier with how everything went with the O'Sullivan company. They not only sell and install windows, they sell and install siding and doors as well. Their phone number is 1-888-876-3777 and the link to their website is set forth below: https://www.yelp.com/.../o-sullivan-installs-north... I highly recommend the O'Sullivan company for all of your window - siding - and door needs. read more

This past summer I had a decision to make on siding a small Cape in Andover. There was a tenant family with young children living in the home and it was important to me that the work be done well and safely. O'Sullivans price was higher than some but it was very obvious that the quality and workmanship was also going to be much higher. When the work was completed I was very delighted. Tenant told me he had to pick up nails off the driveway. When I told the crew chief this they were over in about an hour to sweep the driveway and the yard for nails. Good decisions often lead to good outcomes and as fate would have it the tenant family wanted to buy the house after it was cited so beautifully. It is now their property and the warrantees have transferred to them for lifetime service. read more

O'Sullivan Installs sided my 2-family in Medford in November 2020. After they had begun the project and we were walking around the house, I said out loud to my friend "I wish I had thought to install new 1st floor front windows before the siding!" Tim O'Sullivan heard that and generously offered to wait to complete the siding until the windows were installed. I was so surprised that he was willing to do that for me. He waited to complete the project for a few weeks until the windows were installed and then came back and finished the siding. This was huge. I now have new front windows and the siding job and siding materials looks wonderful. I think O'Sullivan Installs is great. read more

O'Sullivan Installs just replaced 8 regular windows and 1 large bay window in my home. I am so thrilled with the professionalism and talent of the crew! They are meticulous with every detail, no "cutting corners", and they treated the work as if the home were their own. Tim O'Sullivan is very easy to talk with and visited the house twice to talk about the job - once before to measure the windows to be replaced and next as the new windows were being installed. REALLY glad I hired O'Sullivan Installs! Thank you! I will be getting siding soon and now I know who to hire! read more

I had 2 exterior doors, along with 2 storm doors installed. The process from start to finish was exceptional, The guys that came were very polite and careful to get the job done right. As they were finishing I notice a small paint bubble in one of the doors. I notified Tim and he was out to see the door the next day. He took a picture and sent it to the makers, in a short time I received a new door. Everyone I either talked too or came in contact with was great. I would highly recommend them to anyone!! Thanks to all!!! read more

I had new vinyl siding installed at my 100 year old home by O'Sullivan Installs and I am thrilled with the end product and the quality of the work. The process started with Brian and his presentation of the vinyl installation options available and it progressed from there. Tim and the crew checked in with me on several occasions to ensure I was satisfied with the job as it progressed and to keep me updated on the installation. The crew was on time, courteous and kept the worksite neat and uncluttered. The installation took place in November and the crew had to work through less than ideal weather. Everything was done to ensure that I was happy and satisfied with the final product. Tim and the crew even did little added extras that was not their responsibility. I would highly recommend Tim and O'Sullivan Installs if you are looking for quality work and professionalism. read more

O'Sullivan Installs is an extremely good choice for your siding work. Everyone that I was in touch with from the sale to the final walk through- Brian, Paul, Mark and Bobby - were professional and wonderful to work with. They are fairly priced and their work is solid. The job took longer than expected to begin - however, unlike most other contractors who disappear, O'Sullivan stays in regular communication about where you are in the queue, and respond quickly to any requests for updates. The crew was great, and we're very happy with the entire job. Can't go wrong with a call to O'Sullivan. read more

O'Sullivan Installs is by far the best contractor that I have had the pleasure to work with. They show up on time, and complete in a timely manner. They operate a clean job site, and when they leave, it's like they were never there! I had two doors installed on my home, along with a storm door (2 years ago). Tim and his crew also move one of my original door to replace a broken and battered garage door at minimal cost. That remove and reinstallation looks as good as the new doors that were installed. I can't speak highly enough about the way that Tim operates, as everything is all inclusive. I can only image that most of the big box store installers would nickel and dime you on ever consumable used and I doubt that the attention to detail would be the same as well. Yesterday I had a second storm door installed. Mark came over and started working with a new employee (his first day) and spent time walking him through every process of installing a simple storm door. Marks dedication not only to the job at hand, but also his skill as a teacher/trainer is commendable. I directly gave Mark the praise he deserved when the job was completed as well. As for the door, it looks perfect and will add years of use and beauty to my home. read more

For window, door, and siding installs, Tim O'Sullivan and his crew are the best. I won't go too deep into details, but they install my insulated siding, new windows (including a bow window), and door. Everything came out great and they did the work in the winter snow. From the start to the finish the crew was on top of it and Tim (the owner) was either on site or communicated everyday. They took care of all the little extras and did the minor changes without charging extra or writing up a change order. I can't praise them enough for their professionalism or excellence. read more

We had new siding and thirteen new "full frame replacement" windows installed (all new frames and sashes installed from outside). I did a lot of research on line at "window dog" and many other sites investigating a wide range of windows and siding products. We were happy with the products Brian showed us and he patiently went over all out requirements regarding weather concerns, stock sizes and preparation etc. We were concerned about the weather but Paul, Mark Dmitri and his crew worked with us to pace the work to the (unusually) good weather we had in February and we were never "exposed" to the elements. From their first visit to assess timing, to adhering to our requirement to provide the finish stock a week ahead of use so we could pre paint two coats, to Dmitri keeping us informed of our choices in execution (profile vs sill. how to handle the bell, etc.) and Mark catching the fact that we had the wrong window stool stock (we specified 3 inch) but Mark saw that we needed wider boards to get the effect we wanted and stopped the work and provided the new stock, they were a pleasure to work with. They have followed up with us twice since completion and we have faith that if we do have a problem down the line they will make it right. We highly recommend O'Sullivan Installs to anyone contemplating windows and siding. read more