How much do addition contractors typically cost?
- Candia, New Hampshire Average$59,380
- Typical Range$21,360 - $59,380
- Low End - High End$8,200 - $180,000

Deck or Porch - Build or Replace, New Homes / Family Room Additions / Garages / Remodels /Renovations
"Paul and Jay Built A 26x28 two car garage for us could not have found nicer people and more professional couple of guy's. From the foundation crew electrician and excavation everybody Paul deals with are to notch and all do the best work I have seen done. you hire O'Regan Construction he will be the only contractor will hire any more."
Don W. in December 2016

"Michael and his team did an amazing job remodeling our kitchen. From start to finish, they were professional, reliable, and paid close attention to every detail. The quality of the workmanship exceeded our expectations, and the finished kitchen looks absolutely beautiful. The project stayed organized, communication was great throughout the entire process, and the crew always kept the work area clean. I highly recommend Michael’s company to anyone looking for a high-quality kitchen remodel. Thank you for an outstanding job!"
4043E29E8201B03EE33838DF02544CDEF40876D1C5568125B5F971DB36F2C2A6 4. in July 2026

Custom Cabinets, New Home Builds, Porches and Decks , and 2 more
"Steve and his crew were great!"
96BCA1801292AD24F1007149CC38F25039844DD0E8698FD78DB2CE04DFF73B93 D. in June 2024
Garages, Kitchen Remodel, Composite Decks and Porches , and 2 more
"Dependable and easy to work with. He showed up at everyday and worked hard . I would definitely recommend him! Extremely happy with the finish product!"
Lisa M. in July 2024
Kitchen - Remodel, Bathroom - Remodel
"Great company to work with, very responsive and did exactly what they said they would. They constructed us a large second floor deck in our backyard within our deadline. Great guys to work with, would highly recommend them for your next project."
Jonathan T. in August 2020

Hardscaping, Excavation, Landscaping , and 2 more
"Great job! On Time! Professional!"
Sabrina H. in May 2019
"They had the job done fast, and at a good price!"
5C62E091B8C0565F1BAFAD0DAD5934276143AE2CCEF7A5381E8ADA5B1A8D26D2 E. in September 2026
In business since 1990
About us: "C & O Contracting has the knowledge and expertise to assist you with your entire home improvement and remodeling needs. Established in 1990, we have years of experience and know that the customer must be the first priority. Our company is known for our quality craftsmanship and timely work. C & O Contracting is a locally owned and operated company. Our staff is highly skilled and trained to meet all of your expectations and requirements. Please call us today, as we would be happy to discuss your needs."
"I recently had my shingle roof replaced and I?m very happy with the results. The team was professional, punctual, and completed the job efficiently. The quality of the work is excellent, and the new roof looks great. They kept the work area clean and communicated well throughout the process. I would definitely recommend them to anyone needing a roof replacement."
01C40F612736BA43A3D69F48BE813B7873B163B03ADDA786326EBB1D80B37326 D. in March 2026
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Depending on the type of project, you may find subtle differences in the hiring process. Here’s a look at task-specific advice.
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Your research doesn’t stop here. Once you’ve found a few prospective companies, make an call to ask a few questions about work history, licensure and more:
In most cases, the responses you get to these three questions will give you a very good idea of the right pro for your project. If you have more than one front-runner, these additional questions can help you narrow it down.
Any good contractor will answer these questions, and most will appreciate dealing with a client that takes such an active interest in finding good service. On the other hand, if a contractor gives you a hard time with these questions, you probably want to find someone else.
Candia Addition & Remodeling Contractors are rated 4.5 out of 5 based on 70 reviews of 70 pros.
The HomeAdvisor Community Rating is an overall rating based on verified reviews and feedback from our community of homeowners that have been connected with service professionals. See individual business pages for full, detailed reviews.
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