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The MZO Group is an architecture firm based in Stoneham, MA. On its website it says it has been creating award-winning architecture since 1990, with design work for custom single-family homes, additions and renovations, multi-family developments, and commercial and institutional clients. A 2015 custombuilderonline.com article said the firm is based in Stoneham, Mass., and also has offices in Houston. Its Houzz reviews date from 2015 to 2017. In a 2017 Houzz review, the reviewer said they first worked with John Cronin and the firm in 1991 on a first home in Lincoln MA, and returned in 2014 for a house in Gloucester with a roof pool that required steel beams to be placed precisely; that review says "Hundreds of revisions were made, and dozens of preliminary plans were drawn up with no extra fees." A 2015 Houzz review names John Cronin as "one of the founders of The MZO Group" and describes a new 10K SQFT home in a suburb of Boston, which took about 2.5 years from first drawings to completion, with the firm working closely with the builder, Fallon Custom Homes. A 2016 Houzz review describes a large-scale addition to a 1950's colonial home, where a "boxy, compartmentalized house is now spacious with an open floor plan." In a 2015 Houzz review, the reviewer said they hired the firm on 6 projects since 2009, including a carriage house, a pool cabana and an antique 19 century barn restoration, and called them "always on time and money." A 2016 Houzz review says the firm designed 55 custom single family detached condos for the reviewer's company, a project that won PRISM awards. The firm holds an A+ grade from the Better Business Bureau, where it is listed as accredited, and it has a 5.0★ rating from 9 ratings on Houzz.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from The MZO Group. 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
“when Bruni’s architect, Andrew Zalewski of the MZO Group in Stoneham, said it would cost $25,000 to $30,000 per car.”
“They searched the Internet for Boston-area residential architects and found The MZO Group, which is based in Stoneham, Mass., and also has offices in Houston.”
“One move-down couple, who had recently married, asked Cronin to design for them a new home that would blend the nautical/sailing theme of his bachelor pad with the West Texas ambience”
My Husband and I first worked with The MZO Group and John Cronin in 1991 when we built our first home in Lincoln MA - We wanted contemporary and finding an architect with a modern vision that we could have confidence in was difficult when most New Englanders wanted traditional at that time. We were thrilled with the results and when we decided in 2014 to build our ultimate dream house in Gloucester, we returned to John Cronin and his associates - This was not an easy project; for example, there was going to be a roof pool that required steel beams to be placed precisely to make sure it didn't end up in our bedroom and issues with zoning laws over heights, water drainage, etc.. Plus, I had some unusual design ideas that I really needed to be confirmed. To be able to have that confidence in knowing your architect has what it takes to insure the integrity of your build and that what you're envisioning is architecturally sound takes a lot of the pressure off during a very stressful and exciting time. John Cronin is pure class and it was a pleasure to work again with him - a really wonderful human being. I began calling him "Mr. Accessible" because I rarely had to leave a message - he'd pick up and answer any questions I or my husband had. The Architects work collaboratively, so when questionscame up, they call upon everyone's expertise on the many projects that they have worked on to come up with the best solutions. Hundreds of revisions were made, and dozens of preliminary plans were drawn up with no extra fees. John also came by regularly to check out the project as well. MZO is top-tier at an amazingly affordable price. To find a firm that can allow you to design what YOU have in mind and work with that concept and inject those special touches that truly results in a dream home is so satisfying! I know there will never be a cookie-cutter house designed by MZO. Thank you All!!
Consistent with prior work product generated for my company, MZO's current project, 55 custom single family detached condos, successfully produced a wide variety of custom designs that typify traditional village homes; in the process establishing a new price point for this community . Project won PRISM awards for "best multi unit for sale community detached homes" and "best detached home under 2500 sf"; what I consider an awesome accomplishment. MZO's strength from my perspective has been their ability to design product that meets the markets we target.
The MZO Group is an exceedingly qualified organization with immense talent for the housing industry. We have utilized this company for 35 years going back to Claude Miquelle Tradition. For us they have designed in access of 3,000 units including single family homes, apartment buildings, condominiums/townhouse developments and numerous mixed use developments. MZO has performed extraordinarily, especially in unique design and character on every one of our projects. Current Project $10,000,000: - Norfolk, MA consists of 20 Condo Townhouses - Started project January 2016. Expect the duration of the project to take 18 months to completion.
We hired the MZO Group to design a large scale addition to our 1950's colonial home. We had a long wish list for our dated home, and the MZO Group helped us turn it into a beautiful and detailed plan that was easily executed by our contractor. What was once a boxy, compartmentalized house is now spacious with an open floor plan. His design updated our house yet preserved it's colonial charm, which is exactly what we wanted in our historic town. John had a wonderful vision and was incredibly professional, timely and always had our best interests in mind. He has kept an open dialogue with our contractor as the project unfolded, and worked with us as new ideas surfaced along the way. We are thrilled with the project and experience overall.
We contacted the MZO Group to design our custom home. We worked with Jim Zegowitz and were more than pleased. After hearing our ideas and seeing some rough sketches he really blew our minds. Every aspect of the design process was a treat. We looked forward to his updates and are very happy with the end results. Highly highly recommend them to anyone interested in hiring an architect. .
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2 changes recorded — last scanned Sep 24, 2026.
Quotes that never go over4.8
Plaster repair and wallpaper removal in old houses4.7
Full-service deck builds4.4
Craftsmanship4.4
Careful with older homes3.5