Constraction reviews in Waltham, Massachusetts

We recently completed a large project with the team and are extremely happy. We were able to turn our musty old basement into a wonderful place the entire family enjoys. This was a project that involved significant structural, electrical, and plumbing components. The Byggmeister team was professional, well-organized, and very talented. The level of finish was extraordinary!

Professional plumbers contracted. Had water heater replaced within 1.5 hrs. They dont leave a mess behind them, explain, everything, and avoid charging extra.

Awesome service!

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Professional, honest, hardworking with a hyper attention to detail. Could not recommend more.

Prompt, kind and knowledgeable. Job work completed in a very timely manner with great care for my surrounding landscape.

They gave different options for insulating the rim joistand explained the pros and cons of each. They were personable, unobtrusive and communicative. Despite running into some significant unforseen problems with the job, they stuck to their estimate.

Calnan Energy replaced my bathroom window. The attention to detail and the quality of work were astonishing and far beyond my expectations. I am happy and beyond complete satisfaction. If you need a contractor use Calnan Energy. You will be happy, happy, and more happy.

We used Rob to replace windows. The work is done professionally and he takes care of details very well. The service is courteous and genuine. We would recommend Rob to anyone.

I hired Rob to add insulation to my attic. He and his team were extremely professional and thorough. The work was done in a timely manner and completed as promised. I would hire him again.

Robert Calnan and his crew replaced all the windows in my house and added insulation in the attic. My energy bills were reduced by half. He recently replaced a door that was in tough shape. He and his crew do excellent work, communicate well, leave no mess, and do it all with a smile! I will be hiring him again soon for another project.

Rob, his son and a helper did a wonderful job replacing my back door. The work was done as promised, on time, neatly and better than the original. Rob also offered several helpful suggestions for future improvements to my home.

This is the second time we have used Rob Calnan and his company to provide new storm windows for our circa 1900 house plus some other weatherization services. He is totally honest and professional, and we are more than satisfied with his work. Moreover, we found him personally to be extremely congenial and, more importantly, communicative. This latter is a real benefit in a time when delivery dates and other timelines can be unpredictable, in which case having a contractor who communicates honestly and readily is a big plus.

I recommend Calnan's without hesitation. From my initial telephone inquiry to completion of the job, Rob Calnan answered my calls and emails right away. Amazing! We got nine new windows, and it was a seamless undertaking. Rob and his employees took care of every detail and go above and beyond. The staff is unobtrusive, polite, and totally professional. Plus, they leave the place immaculate. Calnan's is a highly professional company. We really appreciated the excellent communication through every step of the process and the completed job is top notch.

The roofing company we hired to reshingle our roof suggested that we consider upgrading the attic insulation, and recommended Rob Calnan. Rob came by the day we called him. He was very attentive to our schedule, and went out of his way to fit us in, and through the entire process was readily available and responsive both to cell phone and email. The work took five days, and after each day we received a call about how things went, and what would be done the next working day. This is a family business. Several of his employees are his own children. He takes great pride in the quality of the work that they do under difficult work conditions, squeezing up through narrow openings into cramped, dark attics with little headroom. Rob was very knowledgeable, and enthusiastic about sharing his storehouse of knowledge about insulation. He educated us. He has been actively involved in developing standards in the insulation industry. Three months after the job was completed, when we emailed on the eve of solar panel installation to ask about whether the solar installers should know anything about the insulation, he responded immediately, and said that the solar installers should call him with any questions. We are very impressed by his commitment to his work. The insulation has made the house noticeably cooler.

My husband and I hired Rob to replace our front door, which had failed due to water leakage into the frame... and we are so glad that we did! As Rob will tell you himself, he is likely not the absolute cheapest option - but his commitment to "getting it done correctly the first time" was exactly what I was looking for, and really sets him apart from everyone else I talked to. He and his sons were extremely detail-oriented, thorough, and professional; every step of the process was explained/shown to me, and the end result looks and functions great. We will definitely use Rob and his team for other jobs in the near future... highly recommend!

Absolutely HANDS DOWN - we had THE best experience with Calnan's Energy Systems!

I'd reached out to two other insulation companies to get quotes to have the walls of our 1940's Cape insulated -- one company never got back to me, and the other came out to measure quickly but I had to chase down their prohibitively-high quote call after call, for a couple weeks.

Rob Calnan came out promptly, took the measurements and explained the process and the materials used. He kept in touch, keeping us updated on the status of the building permit, when our work would start (no small feat during this mostly-rainy summer!), and was here as the insulation was going in.

Rob and his sons were very professional, personable and knew their job! Trust, on-time, reliable, professional, and friendly are all words that I'd use to describe the entire crew at Calnan's Energy Systems.

Our project took only two days, and at the end you couldn't find a single paint chip on the ground, nor any disruption at all.

We live on a moderately-busy road, and we can tell in the noise level, that the insulation is already having a positive impact. We can't wait to see how much energy we can save this winter during the cold weather!

I would not hesitate to call Rob (and only Rob) to insulate our attic next!

Rob Calnan was recommended by a neighbor. I thank her every time I see her! I met Rob a month ago and he insulated my basement last week. He has every quality you would want in a contractor and more. He is a perfectionist and a great communicator, you will never be in the dark about anything! He is also a great human being, I am glad to have Rob in my contacts going forward.

Rob was a great communicator and his promptness and knowledge were one of the main reasons we went with him over a slightly lower estimate we got. His sons did a good job of doing the work we required, which was messy work, and they left the place in pretty good shape with just some leftover bits of insulation here and there. If I have any additional insulation needs, Calnan would be my first call.

After a poor experience with Revise energy, I reached out to Calnan in the hopes of having quality work performed. They exceeded my expectations. R60 cellulose for the attic with R60 foam board for the verticals. The house is SO much more comfortable now. They also put in a cat walk in the attic so I can reach key parts of the attic easily. The workmanship is just top notch, as are the materials, service, and communications. They cleaned up after every day of work so the house wasn't a mess of insulation, and told me what they were attempting to achieve every day. I'm recommending them to everyone I know.

Rob and his crew’s work was exceptional. His initial consultation gave me a great deal of confidence about moving forward with a difficult construction job, then the actual work was impeccable. Rob organized and handled all communications with vendors (dumpster) and updated me regularly and with great detail. His work was professional, fast, and very clean. He will always be my first phone call for any contracting work I need done.