Home Addition Building Services
For over 35 years, JM Construction has been using our design-build experience to develop home additions that add both space and functionality to houses all over the Metrowest area. From in-law suites to home offices to kitchen expansions, a well-planned home addition can enhance the style of your house as well as add room to play, work, and relax. Our services ensure you have the features and design you desire, including storage space and home amenities.

Why Choose a Home Addition
While you may love your home and your neighborhood, it’s difficult to call a house your dream home when you’re feeling limited within your space. A home addition offers homeowners not only more room, but versatility and freedom. You can add a second floor in-law suite to turn the house into a multi-family home, or a sunroom as an additional living space. The possibilities are endless.
Types of Home Additions We Build
Kitchen & Dining Room Expansions
The kitchen and dining room are spaces typically bustling with activity. We can expand them so they fit more people and appliances, allowing them to feel equally welcoming and functional. optimizes efficiency and aligns with the client’s preferences.
Family & Sunrooms
Give your family and guests a place to congregate and relax. Our team can determine how to get the best light for the sunroom and how to make the family room feel luxurious and comfortable.
Primary Suite Additions
We can enhance your primary suite by expanding it. We can build additions like a walk-in closet, en-suite bathroom or spa, or dressing room.
Home Offices & Studios
We create peaceful spaces dedicated to your work or craft, allowing you to be productive without needing to leave your property.
In-Law Apartments & Accessory Dwelling Units (ADUs)
Our expert team can turn your house into a multi-generational home with an in-law suite or ADU. We can design it with accessibility in mind for elderly family members as well as privacy and independence for all inhabitants.
What Our Customers Say
David CarosellaSeptember 12, 2025Trustindex verifies that the original source of the review is Google. JM really hit a home-run! We wanted a screened in porch, but ended up with a luxurious four season sunroom! Jenn was great to work with for design and when we finally got started on the project Skipper was a true professional. He kept a close eye on the construction and was always available (even on off days) to clear up confusion or provide direction for an unscheduled delivery. the entire JM team have been fantastic from the beginning design phase straight through construction and to punch list and follow up. Their estimate process was clear and accurate, the design process was just what we needed to realize our dream room and we look forward to working with them again on our next project! Julia CarbonettiJuly 22, 2025Trustindex verifies that the original source of the review is Google. JM Construction did a great job with our basement home gym. O’ben in particular was excellent! He kept us updated with next steps, timing, and overall process. We would recommend JM Construction for those looking to do a home project. Mark PolnyJuly 22, 2025Trustindex verifies that the original source of the review is Google. We recently used JM Contruction to convert a portion of our garage to a laundry room. From design to finish the were easy to work, friendly and professional. Our project manager Todd is a skilled carpenter and kept us updated on the progress of the project. He was easy to taslk to and communicated any chanes and quickly resolved any issues. Claire RichardsonJuly 15, 2025Trustindex verifies that the original source of the review is Google. I rarely write reviews, but JM fully deserves these 5 stars for their recent remodel of almost the whole upstairs of our home! The team have created 3 wonderful new bathrooms, where we originally had two, and found space from what seemed like thin air! The master en-suite JM designed with us is the spa-like space we have always dreamed about and is better than any hotel we have ever been in. We are delighted with it! JM has constructed a suite-like space for our son, with an incredible walk-in closet and en-suite bathroom, complete with a window, where there was none! In our spare room, they have created a beautiful en-suite and added a window for natural light. Working with Skipper as our project manager was an absolute pleasure. He is calm, thoughtful and an amazing problem solver. We appreciate everyone who has helped to realize our vision for what our home could be. We recommend without hesitation. T.D. ThompsonMay 29, 2025Trustindex verifies that the original source of the review is Google. JM Construction just remodeled my home office. Even though it was probably a “smaller” project compared to the type of work they usually do, the entire JM team made me feel like I was their most important client. Communicative, committed to staying within our budget, and extremely clean and meticulous with every aspect, our Project Manager, Steven, went above and beyond to minimize disruptions for my family and complete the project on schedule. And he was a joy to interact with. I couldn't be happier with my refreshed office that allows me to run my small business more efficiently, and will enlist JM Construction again for future home renovations. They exceeded all expectations, and I highly recommend JM for anyone considering a home renovation project. Jason TeetsApril 10, 2025Trustindex verifies that the original source of the review is Google. We were in desperate need of an exterior refresh in the backyard including replacement of our existing wood deck that was in need of a facelift. We selected JM Construction to help us with a new deck remodel including composite deck materials, new railings and stairs. They provided us with excellent material suggestions and helped walk us through the design and construction process. Even though the project was scheduled for March, they were here everyday working through the cold weather. We are very happy with the end result and recommend their work for any project inside and outside. Christopher HalloranFebruary 26, 2025Trustindex verifies that the original source of the review is Google. We have had a great experience working with Justin and the Team at JM Construction. They are extremely knowledgeable, courteous, and professional always! Rob JosephDecember 19, 2024Trustindex verifies that the original source of the review is Google. Todd did a great job on our new porch. Good communication and work was great. Would recommend and will use JM again. Vidya VaradarajanDecember 12, 2024Trustindex verifies that the original source of the review is Google. We chose JM Construction for our kitchen, living, dining area remodeling. The team we worked with was fantastic from start to finish of the project: Excellent communication at every phase of the project, designing to our needs and budget, keeping the promised timelines and an overall excellent workmanship. They have a policy to finish every detail of the design work and order all parts before starting any work on site. The project consultation with Tim and design phase with Jenn were excellent. Tim sat with us for multiple meetings to answer all our questions regarding pricing and timelines. Jenn is a great designer and was fantastic to work with. While she incorporated all our needs in terms of opening up the space and increasing storage, she also clarified when we tended to make questionable design choices. The end product is a beautiful space with all our original problems resolved! For the construction phase we worked with Justin and O'Ben. They maintained the 12-14 week timeline, communications were timely, there was full transparency about any cost changes with customer approvals, any problems identified during construction were dealt with smoothly. Justin and O'Ben communicated with us no matter when we reached out to them, including some issues over the weekend. O'Ben and his crew on site were very pleasant from start to finish. They built us a comfortable temporary kitchen space through the 12 weeks of work. They left a clean construction area every day. Once the work was completed, they let us use the space for some time to fix any problems before calling the project fully done. Overall, we are very happy with this team and look forward to working with them for our future projects. Luke MillerNovember 4, 2024Trustindex verifies that the original source of the review is Google. The JM Team was a fantastic partner bringing our vision to life with our home addition project. They were transparent, on time, and quick to resolve any issues. The final outcome was everything we had hoped for!
Our Design Build Work


















Our Design-Build Approach
Our design-build approach to home additions means we handle the entire process from conception to completion. JM Construction’s team consists of expert designers, builders, and subvendors who seamlessly collaborate with one another to provide a remodeling experience that’s as stress-free as possible.
From the start you’ll be consulted and made to feel in control of the remodel, with us working with you to create your dream home addition to life. You’ll be given frequent progress reports, updates, and schedules, and we will answer any questions throughout the process to ensure you’re happy with the final result.
Let's Talk - Start Your Addition
Speak to our design-build team today to start building the home addition of your dreams. With over 35 years of experience, we have the knowledge and skills to execute your vision.