Boston Home Addition Builders
Essex builds home additions in Boston and across the Greater Boston area. We are an award-winning custom home builder and remodeler based in Wilmington, MA, and for more than 30 years we have guided homeowners from early planning and budgeting through permitting and construction.
As your home addition builder, we price the project line by line and show you actual costs against the forecast every week, so you always know where the money and the schedule stand.
Most Homeowners Building Additions Fear Scope Creep. Here Is How We Prevent It
Scope creep is the slow, unmanaged growth of costs and timelines, and it is the biggest fear with a home addition. We prevent it with a system that keeps you in the driver’s seat.
- Weekly actuals vs. forecast. Every week you get an update comparing actual costs to the budget, so there are no surprises when the project ends.
- Structure that lasts and matches the house. Whether you own a 1920s Colonial in Winchester or a mid-century modern in Lexington, we engineer new foundations, rooflines and transitions to last and to blend with the original house.
- A clean, safe job site. Additions are often built while you are still living in the home, so we keep the job site organized, safe and free of debris to limit disruption to your daily life.
Types of Home Additions We Build
Not sure which type fits your house? We will look at your site and your goals and tell you what makes sense. Looking for home extension contractors? These are the ways we expand a home.
1. Second-Story Additions
Build up to add bedrooms or a primary suite without giving up any yard. We check the existing structure first to confirm it can carry the extra weight.
2. Kitchen and Family Room Additions
Sometimes you need more square footage, not just a new layout. We add an open kitchen or great room that flows into your existing floor plan.
3. Primary (Master) Suite Additions
A bedroom, bathroom and closet space in one project, built over the house or on the ground floor.
4. In-Law Suites and ADUs
An in-law suite or accessory dwelling unit (ADU) gives family a private place to live. ADU rules vary by town, so we sort out zoning and permitting early.
5. Sunroom and Mudroom Additions
Smaller additions that solve one problem: a place for coats and boots, or a bright room to relax. They still need proper foundations, insulation and air sealing to hold up through a New England winter.
Why Homeowners Hire Essex as Their Home Addition Builder
Here is what you get when Essex builds your home addition:
- In business since 1995, with more than 500 projects completed.
- Our employees, including carpenters and project managers, do the bulk of the work and are on site every day.
- Open-book contracting with no hidden markups.
- We work with your architect, or we introduce you to one.
- Members of the Builders & Remodelers Association of Greater Boston (BRAGB), the National Association of the Remodeling Industry (NARI) and the National Association of Home Builders (NAHB).
- Our 346 Highland project, a new home, won a Gold PRISM Award from BRAGB for Best High Performance / Energy Efficient Home.
Frequently Asked Questions
Cost depends on size, layout changes and finish level, so we do not guess. We build a detailed, line-item budget with you before construction starts, and it becomes the baseline for your weekly cost reports.
It depends on the size, the design and permitting. We build a realistic schedule with achievable deadlines for each phase and review it at every weekly meeting.
We use a “surgical” approach to integration. This includes advanced dust-containment systems, floor protection, and temporary weather barriers to ensure that the lived-in portions of your home remain clean and protected throughout the build.
Because an addition is only as good as its weakest link. If a new room isn’t built to high-performance standards, it can create cold spots, moisture issues, or air leaks that affect the comfort of the entire house.
Yes. Our deep experience in towns like Concord, Lexington, and the North Shore means we understand how to work within the constraints of local building departments and historic commissions.
Ask for references from similar projects, walk a job site to see how it is kept, and ask to see a sample weekly report. A contractor who cannot show you one is telling you something.
Start the Conversation
If you are thinking about a home addition, the first step costs nothing. Book a discovery call and we will talk through your house, your goals and what a realistic path looks like. You can also see recent projects in our portfolio.
Call 978-658-6300 or book a discovery call online. We Build for a Century.
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Contact Us
Ready to start your remodeling project? Our team is here to answer your questions, discuss your ideas, and provide the guidance you need to move forward with confidence. Whether you’re in the early planning stages or ready to schedule a consultation, we’re just a phone call away.
Start Your Project With Us
We believe a clean job site is a visible signal of a professional project. Our approach ensures that your home remains a safe, organized environment throughout the duration of the build.
- Discovery & Feasibility: We review your goals, site conditions, and budget expectations.
- Pre-Construction & Planning: Detailed budget forecasting and scheduling to mitigate risks.
- Execution & Reporting: Weekly meetings and financial actuals keep the project on track.
- Post-Construction Support: We stand by our work long after the dust has settled.
John and Walter, We are so happy! Can’t begin to tell you what a pleasure it has been to work with Essex, you and all your crew, all wonderful people. Any time you would like a rave review just say the word.
We couldn’t be happier with the work! We can certainly attest to your flexibility, ‘can do’ approach, and innovative solutions. Thanks again for a great job that was on time, on budget and exceeded expectations!
Walter and John unfailingly put in the time and effort needed to ensure that I understand my options and can choose those that meet my needs best. Essex staff are true professionals, from their craftsmanship to their project management and communication with me as a client. I will not hesitate to use them for home improvements in the future.
Never in all my years of home remodeling projects have I experienced the work ethic your group displayed. From your timeliness, quality of workmanship, and right down to the end of the day clean up. Everything by Essex was top notch and I am pleasantly surprised by how the team came together to get the job done.
Thanks for everything Walter. It is a pleasure to work with a true professional like you – you are a dying breed, I am afraid.
I just wanted to say how much I enjoyed having them work here. I know it’s a weird thing to say, but they are all perfectly delightful, so professional, talented and knowledgeable gentlemen.
Walter, I felt a great need to let you know what a great group of guys you have hired.
Walter. You and your team are the best!!
You took good care of me! I liked working with you and the crew a great deal, and even two years later still get compliments on the excellent quality of the workmanship.
Thank you for the phenomenal job. The patience, attention and professionalism that you displayed made what we thought would be a stressful and uncertain experience seamless and stress-free. You returned our calls, showed up on time, and you completed the project on schedule.
Walter and John have led their company in highly successful projects with Torrey Architecture. Our firms have collaborated to provide design-build capabilities to realize our clients’ dreams to transform their homes. I recommend Essex as a capable and trustworthy builder who is a pleasure to work with.
