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Top-Rated Addition and remodeling pros in Portsmouth - Updated Nov 2026

Wagner Home Renovation
4.5(
34
)
Addition to Existing Structure - BuildGarage - RemodelMajor Home Repairs (General Contractor)+2 more

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"The project went great; I'm very happy with the final product. It lines up exactly with what I was looking for at the start of the project and looks better than I could have planned because of some great design suggestions from Wagner Home Renovation along the way. We ended up creating two separate closets from the previous closet incorporating some previously unused space in the condo as well. Both closets are accessed through very nice double doors. The laundry closet and general/clothes closet both look great. Wagner Home Renovation used high quality repurposed wood from a previous project and black iron rods to give the general/clothes closet great character. All of the work was very well done, and blends into the existing paint and trim-work so well, you can't even tell any work has been done. As an example, they added a wooden keystone at the enlarged entranceway near the new closets that was a very nice touch and feels like it was always there. They were able to save me money throughout the project by offering to use repurposed wood from previous projects that was often better quality than what would normally be used. Wagner Home Renovation does high-quality work and has a genuine interest in how well the end result turns out. They have a great attention for detail, offer great design ideas and options, and are responsive, honest, budget-conscious, flexible, reliable and easy to work with. I highly recommend them."
Response time4 days
Response rate100%
2 neighbors recently requested a quote
Avatar for Norman Builders
Norman Builders
4.8(
86
)
Kitchen - RemodelAddition to Existing Structure - BuildAddition to Existing Structure - Build - For Business+7 more

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"Ryan and crew were awesome... professional, punctual, excellent workmanship, very fair price. Ryan and Warely did exactly what they said, exactly when they said it would be done. Excellent communications throughout the entire process. Will not hesitate to use Norman Construction again - and very happy to provide high recommendation! Norman Construction built two small-ish additions to our home (at the same time!) - the crew was able to perform some very detailed demo immediately adjacent to our living space to get the work completed .... with zero interruptions or issues to our living space."
New Kitchen
New Master Bathroom
Exterior Under Construction
The Addition from the Exterior
2nd Floor Master Bathroom

+53

1 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Horsman Builders
Horsman Builders
4.3(
23
)
Sunroom or Patio Enclosure - BuildAddition to Existing Structure - BuildAddition to Existing Structure - Build - For Business+9 more

Serving Portsmouth, NH and surrounding areas

Approved

In business since 1986

Free estimates

Emergency services offered

"I would not hesitate for a second hiring Horsman Builders for any of my house projects or remodel, in fact that is what I will do from now on. I was nervous starting a project having to handle things on my own but Tim made me comfortable with a detailed estimate, answered all my questions, kept me informed about the work, the site was always clean and the result is awesome, my neighbor was commenting on how great it is just checking it out from a window. Fair price, excellent quality and great customer service. A+"
General Remodeling Project
General Remodeling Project
Additional Photos
Additional Photos
Additional Photos

+4

Response time7 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for Chris Johnson Custom Builder
Chris Johnson Custom Builder
5.0(
9
)
Addition to Existing Structure - BuildGarage - RemodelKitchen - Remodel+2 more

Serving Portsmouth, NH and surrounding areas

Approved

In business since 1997

Free estimates

Warranties offered

"Chris did a great job with our remodel. He created a 4 season room, and remodeled a kitchen and bathroom and added built-ins to our mudroom. He made sure he understood what we wanted and was clear about timelines and cost. Would not hesitate to reach out to Chris again for work."
Donica road
Cappy’s lane York Maine
Donica road
Cappy’s lane York Maine
Donica road

+45

4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Rabbit Design Remodeling Corp.
Rabbit Design Remodeling Corp.
5.0(
10
)
Kitchen - RemodelBathroom - Remodel

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2023

Free estimates

Small jobs welcome

With over 8 years of experience as a countertop manufacturer and installer, Rabbit Design Remodeling is now also licensed as a general contractor in MA (CS-119518), making it the company you need to completely take care of your house. \nWe will take care of everything, from the initial consultation to the last detail of the job. We will always treat your property as we would our own, and you will be amazed at how simple and easy our team will make everything go wonderfully smoothly. \nCall our team today. We look forward to working with you!

Newfields NH
Island
Kitchen
Master vanity
Newfields NH

+71

Response time12 hrs
Response rate94%
5 neighbors recently requested a quote
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FAQs for addition and remodeling projects in Portsmouth, NH

The proper sequence of a kitchen installation starts with laying the foundation and structural framework. From there, you need to establish utilities like plumbing, wiring, and gas lines, then install cabinetry and countertops, and finally finish with flooring, painting, tile backsplashes, and lighting. A professional kitchen installation contractor can coordinate each component of your project to minimize the timeline and maximize resources.

The Portsmouth, NH homeowners’ guide to addition and remodeling services

From average costs to expert advice, get all the answers you need to get your job done.