Get matched with top addition to existing structure builders in Sterling, MA

"For our home addition/renovation we are very grateful to have found Richard Connolly and his site iCornerstone. Our vision was a Two-story + basement + livable attic space home addition which would provide significant practical square footage to our existing house and integrate seamlessly with it. We interviewed a number of general contractors but we were overall a bit uncomfortable after the interviews due to gaps in transparency regarding how costs were calculated and how timelines were established, resulting in some lack of confidence. We happened upon Richard’s iCornerstone site via Angies. Richard provided an extremely transparent and detailed description of his unique and practical process, which delivered a set of superb designs along with a truly logical, transparent, and honest listing of costs, both materials and labor, at all stages, and how those costs were derived. Richard also delivered transparency on timelines, and he provided recommendations for all the needed tradespeople that he had historically a close working relationship with; alternatively we could have selected tradespeople of our own choosing. Richard and his process gave us the utmost confidence for proceeding. We proceeded with our renovation under Richard’s guidance and his own crew and the entire process went according to plan with excellent communication, rapport, and confidence at all stages from excavation to final finish work. Transparency, confidence-building, dependability, highly knowledgeable, customer-friendly, and results-oriented are all terms we would use to describe Richard and the iCornerstone process. We strongly recommend Richard for anyone contemplating any home renovation or home addition, large or small."

"When we started our plan of remodeling, the first thing we did was the complete roof replacement including kitchen vent & duct pipe installation to the roof, and new installation of attic ventilation. MMP did not only completed it just as agreed but also very efficiently. The crews were friendly, professional, and careful. The jobs were carefully managed and implemented effectively. I was impressed by Matt, who is the manager, and he does an outstanding job in managing the crews and the progress of the situation, and the communication was clear and always to the point. We then moved to initiate a search for a contractor of two bathrooms remodeling after completing the roof and attic vent, MMP was one of the many candidates. Matt has had not only the best idea and proposals but also shown an impressive & professional sense of evaluating the project accurately, including the possible structural modification as well as a competitive estimate of the cost of the build. His proposal included a rebuild of a wall of the bathroom to expand another one adjacent to it. Matt accepted to use my schematic design image (made with a software tool) and a spreadsheet list of the fixtures that I created - as many as fifty items including TOTO, Grohe, American Standard, Panasonic, and IKEA - to start the job (later changed some of them due to local plumbing code compliance) After beginning the bathroom remodel project, Matt shared what jobs will be done with us timely and efficiently via text so that we feel comfortable enough in knowing what is going on while living in the house of dust & noise from remodeling. The crews, Zen and Mark, were very courteous, extensively experienced, reliable, and friendly with excellent communication, sometimes with songs of 80s rock music. They ask me when more precise specifications are needed and notified me when they feel advance notifications are required. When a change is necessary due to inspection, they informed me and clarified what and why. I have never felt uncomfortable in living together with the remodel job which has lasted over four months. The completed two bathrooms were stunning, just as I imagined. Matt, Zen, and Mark have proved their strong & thoughtful expertise and lived up with my request patiently until completion. Great job. A home remodeling project cannot be successful without having a trusted partner, and my experience with MMP has led me to be glad to share my confidence that MMP has a credential to become your reliable partner to manage a construction project together."

We’re a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor Home Improvement services that are customizable to each individual project. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!

"Jason and his team did a fantastic job on an external stairwell for our property. It is now the nicest part of our house! Jason is personable and professional. Communication was easy throughout. Jason works as an inspector in his home town, which made me feel very comfortable that his work would be to code. He gave us a fair quote and not only stuck to this, but also adjusted the price downward when he did not use some materials that he anticipated needing initially. I will certainly be using Jason's services in the future if needed and would highly recommend Mason Sky."

"Jefferson was GREAT. Very responsive. Fast work but does it right. Will hire him again for any additional projects."

"They have a great process and team! Communication from the planning stage to final is key, Art and Scott where there to answer questions and update us on the schedule. We are very happy with our remodeled kitchen and hallway stairs."

"Did excellent work! Was professional, honest, and explained how the process works. Equally as important to me is that he answered all of my questions. Admittedly, I can be overbearing in that regard, so I genuinely appreciated his patience. Highly recommended and look forward to having other projects done by him and his team when my budget allows for it again."

"CP construction and carpenrty did a great job building a new deck for my family. I was kept in the loop during the building process. Most importantly the price was right and great workmanship. I will use CP construction again and I highly recommend. Thanks again guys, from Nigel."

"I hired Quality Construction (QC) to build a 22x24 two car garage, started from preparing the site. Turns out the site has ledge, QC worked with the foundation guy and did it very reasonable price. QC framed in garage, matched existing vinyl siding to house, iced and water shield the whole roof. QC installed garage door and garage side entrance door. QC installed gutter for the garage and also a French drain behind the garage, paved a new drive way leading to the garage. I also hired QC to build a deck between the house and the garage. Very thing comes out so beautiful excellent job. There is no issue working with QC. I really appreciate his workmanship and efficiency according to the schedule. I definitely will hire him for my future projects again. As a matter of fact, two of my neighbors have hired him for their projects."

Welcome to JNBA Development, where we build, renew, and care for the spaces you call home. Our team specializes in new construction, creating modern, durable, and functional properties from the ground up. \nWe also focus on property renovation, transforming existing spaces with fresh designs and upgraded features. With an eye for detail, we ensure every project reflects both quality and value. \nBeyond building and renovating, we provide property management services that keep homes and investments in excellent condition. From routine upkeep to on-demand support, we make ownership worry-free. \nAt JNBA Development, our mission is to deliver reliable solutions in every stage of real estate. We are proud to be your trusted partner in building, improving, and maintaining properties