G.M. Gagne

4.93 |77 Verified Ratings
Write a Review

G.M. Gagne

4.93 | 77 Verified Ratings
Write a Review


PO Box 3202
Manchester, NH 03102
Your use of our services is governed by our Terms & Conditions

G.M. Gagne

GM Gagne (603) 418-1019

Being in the concrete trade for most of my life, I decided to start my own business in 1998. Since then, I have become well established in my area. That experience has brought me work from contractors to homeowners, many of them being repeat customers. During my years in business, I have built a solid relationship with local suppliers. These relationships allow me to quote competitive pricing with prompt/reliable service. I do offer free estimates, by phone or on site. All calls will be returned, if not answered. Please leave a message and I will return your call promptly.


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Service Area

  • Manchester

Services Offered

  • Concrete Driveways & Floors - Install
  • Concrete Flatwork Repair
  • Concrete Patios, Walks & Steps Install

Areas of Expertise

  • Concrete Driveways, Floors, Patios, Pool Decks, Slabs, Steps, Walkways.
  • Concrete Repairs, Resurfacing, Sealing.
  • Many Colors & Finishes available.
  • Bobcat / Site work.
  • Residential work only!

Product Brands Used

  • Concrete

Quick Facts

Business Hours
(Please call to confirm)
  • Free Estimates


In Business Since: 1998
Memberships & Affiliations
  • HD Supply (White Cap)
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Business Overview

How We Got Started

We describe our business as Well established

Is GM Gagne Insured?



G.M. Gagne

My Work
10 Projects
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Ratings & Reviews
G.M. Gagne

Real feedback from real homeowners.
Learn more about this pro by reading the ratings and reviews below.
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Showing 1-10 of 77
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5.0   |  
Review by in Manchester, NH
When we reached out to him through home advisor, we heard from him that same day. He came to our home the next day to go over what we were looking for. ( Concrete patio 11x13 and a concrete pad for a 14x24 shed.) He gave us an estimate and a date when he could do the job. He arrived on said date and completed the job in 5 days. We are so pleased with his work and we would definitely call him again.
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5.0   |  
Review by in Manchester, NH
Gary did an excellent job communicating the specifics of the job, what he would do, the time and dates he would be able to complete the work in, and his finish work is amazing! I would not hesitate to hire him again!
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5.0   |  
Review by
Project: Install Concrete Driveways & Floors
Gary delivered as promised. Great experience working with Gary. Great value
5.0   |  
We hired GM Gagne to replace the concrete front steps on our home. We told Gary what we wanted and he delivered exactly what we were looking for. He gave us a reasonable price and set a timeline that he stuck to. He's reliable, skilled and dealt with us honestly. This was good business and we highly recommend GM Gagne.
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5.0   |  
Review by in Merrimack, NH
Gary was prompt to answer and he always called when he said he would. He showed up when he said he would and completed the job in the estimated time frame. Could not have asked for a better experience, especially in today's world. Will highly recommend Gary and would certainly call him again if another project comes up.
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5.0   |  
Review by in Goffstown, NH
Gary was awesome! Project came out great. I would highly recommend!
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5.0   |  
Very cordial , always looking out for the best for the customer. Does what he says and always follows up. Prompt at all appointments. Makes sure your happy.
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5.0   |  
August 2016: I had several cracks in my original concrete garage floor. The floor around one particular crack was offset by more than 1/8 of an inch. Gary provided detail information on what he could do to fill/fix the floor, information on material to be used, and an explanation of what might recur in the future and why. We chose Gary out or several contractors. The result were fantastic. Just as Gary had promised! September 2017: It is now a year later and the floor still looks fantastic. Extremely happy with the work. We did have a couple of spots that the top seal chipped away from over the winter. This issue was caused by the amount of calcium used when another company poured the original floor 30 years ago. Even though the issue was not tied to the work Gary did, he came back and re-grinded and resealed where the chips had occurred. Gary did above and beyond our expectations. We found Gary prompt, hardworking, and focused on customer satisfaction. We would recommend him to any of our friends.

1 of 1 users found this review helpful.

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5.0   |  
My husband and I hired Gary to repair our front concrete steps. From the initial phone call to the final product Gary was great at communicating with me via phone and email and answered all the questions I had throughout the process. The project was done in a timely manner and Gary stayed within the budget we spoke about. Gary does quality work and my husband and I are very happy with the final product. I would highly recommend Gary to anyone.
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5.0   |  
Review by in Auburn, NH
I just had a concrete steps repaired. I can not stress enough how great a job Gary did for me. great attention to details wonderful work ethicist none stop and get the work done that's how he works. the first contractor not to be on his cell phone all day working on another job I will gladly recommend Gary to anyone Thanks' Gary
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Showing 1-10 of 77
  Page 1 of 8

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