Local business · North Reading, MALocal business · 126 Main St Ste 5, North Reading, MA 01864
Verified record
Typical Greater Boston range for this kind of work, from regional averages — not a quote from CJM Builders Inc.. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$23,000 – $35,000
Typical remodeling project around $29,000
Twenty-four people have written about CJM Builders since 2022, and a striking share of them were on their second or third job with the company. One family, writing this August, had CJM turn an unfinished third floor into a guest suite and then came back for the primary bathroom. Another, writing in July, followed a screened porch and deck with a finished basement. That is the pattern worth knowing: the North Reading company that trades as CJM Builders — and files as CJM Inc. — gets hired for the awkward space nobody else wants to tackle. In a 2025 review a homeowner described an attic turned into a second living area; a 2024 reviewer had a deck converted into a three-season porch, drawings through permitting to final details; another in 2024 had a pop-up window fitted into a pool house. A September 2025 customer had the whole exterior replaced at once — doors, windows, siding, a roof and a deck — and said it went faster than expected. The names recur too. Chuck — Charles Mulik, whom BBB lists as president — came out to walk through options for a 2024 addition customer whose lot made the job tricky. Cait and Mike turn up as project managers across four years of reviews, and reviewers writing in late 2024 described tracking schedules and approving changes through the Buildertrend app. A 2024 kitchen customer said the subcontractors were scheduled efficiently enough that the renovation finished quickly; a 2025 reviewer said the crew cleaned the work area and the pathways to it at the end of every day. On Google the company holds a 5-star average across 28 ratings. Its BBB file is graded A+, though that grade sits on a profile which also states the business is NOT BBB Accredited — two separate facts, not one endorsement. BBB records a business start of 1 January 1992 and incorporation in January 1998, matching the company's own claim to have started in North Reading in 1992. One caution, and it is about the paperwork rather than the work: BBB's own page contradicts itself, saying in one place that the company employs 14 people and in another that it employs 4, and describing the business as established and incorporated in 1998 while its own field records a 1992 start. If crew size matters to your project, ask directly how many people are on the payroll now. The company says it covers Andover, Middleton, North Reading, Reading, Wakefield and Wilmington, and it takes commercial work — tenant build-outs and business renovations — alongside houses. For an addition, a gut kitchen or bath, or turning dead space into a room, this is a sensible call, and the 3D walkthrough before construction suits people who want to see it before committing. Get the current home improvement contractor registration number and check it against the state yourself.
⭐⭐⭐⭐⭐ We can’t recommend CJM Builders highly enough! This is the second major project they’ve completed for our family, and once again they exceeded every expectation. The first time we worked with CJM, they transformed our unfinished third floor into a beautiful guest suite complete with a spacious family room. The craftsmanship, professionalism, and attention to detail were outstanding, so when it came time to renovate our primary bathroom, there was never a question about who we’d call. Our bathroom has been transformed into a true luxury sanctuary complete with soaking tub, rain shower, sauna, and TV! Every detail was thoughtfully executed, from the quality of the workmanship to the finishing touches. The entire space feels like something you’d find in a high-end spa, and we couldn’t be happier with the result. Throughout both projects, the CJM team was reliable, communicative, respectful of our home, and committed to delivering exceptional work. They stayed focused on quality, offered great recommendations along the way, and made what could have been a stressful renovation a smooth experience. Finding a contractor you can trust is invaluable, and CJM Builders has earned our trust twice over. We wouldn’t hesitate to hire them again and wholeheartedly recommend them to anyone looking for a builder who takes pride in their work, is committed to their customers, and delivers beautiful, lasting results.
Thrilled with how our basement came out! The team at CJM is very communicative, helpful, organized, and overall great to work with. This is the second project CJM has done for us (screened in porch/deck was the first), and we anticipate more projects with them in the future. Highly recommend!
We hired CJM Builders for an addition and extensive renovations throughout our home, and the team was absolutely AMAZING from start to finish! Their guidance and support were incredible, making the entire process stress-free. The attention to detail was unmatched, and the workmanship top-notch! We couldn’t have asked for a better general contractor to work with on our home!
CJM did a complete new exterior for my house: doors, windows, siding, a roof, and a deck. The project went better and faster than I expected. They were great to work with. Great communication. The quality exceeded my expectations.
We couldn't be happier with the work CJM did to turn our attic into a home away from home. We were referred by friends, and we were not disappointed. The entire team, including the subs, were amiable, quick, clean, and professional. We couldn't have asked for a better GC than CJM. We'll absolutely refer them to others looking for builds or finishing and will most likely use them again when we refresh a bathroom or two. :-) Thanks again for the help!
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Added 24 new comments, added 56 new photos, established rating 4.1
Roof deck builds4.4
Porch and deck rebuilds4.4
49 years in business4.4
Low-disruption projects4.4