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Business Details
Expert Home Remodeling Services in New Hampshire
Granite State Home Improvements has been dedicated to enhancing residential properties across New Hampshire for over five decades. Our expertise spans energy-efficient upgrades, exterior renovations, and interior transformations, prioritizing quality craftsmanship and customer satisfaction. We maintain industry-leading certifications, including CertainTeed Elite 5-Star Contractor and Lead Safe Certified Firm designations, ensuring adherence to best practices and safety standards. Our partnerships with trusted manufacturers like Harvey, Pella, and ThermaTru guarantee access to premium materials.

With a focus on transparency and client education, we guide homeowners through every project phase, from product selection to completion. Our award-winning work in historic restoration and durable installations reflects our commitment to exceeding expectations. Backed by extended warranties and a reputation for reliability, we serve communities from the seacoast to the lakes region, delivering tailored solutions that enhance both aesthetics and property value.
Services
Windows Metal Roofing Vinyl Siding Decks Interior Remodel Asphalt Roofing Doors
Highlights and features
  • We offer 50+ years of local remodeling expertise
  • Our team holds elite industry certifications from CertainTeed and VSI
  • We provide SureStart PLUS extended warranty coverage
  • Our historic restoration work has received national recognition
  • We use only premium products from trusted manufacturers
Associations and certifications
  • CertainTeed Elite 5-Star Contractor
  • Vinyl Siding Institute Certified Installer Program
  • CertainTeed ShingleMaster Company
  • Lead Safe Certified Firm
Services
Windows
We install premium windows from trusted brands like Harvey, Paradigm, and Pella. Our energy-efficient solutions improve home comfort while reducing utility costs. Professional installation ensures proper sealing and longevity, with expert guidance available for material and style selection.
Metal Roofing
Drexel metal roofing systems withstand extreme weather conditions. Our installations feature Kynar 500 technology for superior durability and a 35-year non-prorated paint warranty. This low-maintenance solution offers long-term protection with aesthetic appeal.
Vinyl Siding
CertainTeed vinyl siding enhances curb appeal while providing weather resistance. Our certified installers ensure proper fit and finish, offering a range of styles and colors. This durable, low-maintenance option improves energy efficiency and property value.
Decks
AZEK composite decking creates durable, low-maintenance outdoor spaces. Our designs withstand harsh weather while maintaining aesthetic appeal. Stain-resistant materials allow homeowners to enjoy functional outdoor living areas without extensive upkeep.
Interior Remodel
We handle complete interior transformations including basements, bathrooms, and kitchen upgrades. Our process prioritizes minimal disruption while maximizing functionality and value. Custom solutions incorporate modern materials and energy-efficient design principles.
Questions
What areas do you serve?
We serve homeowners throughout New Hampshire, from the Seacoast region to the Lakes area.
Are your contractors certified?
Yes, we maintain multiple industry certifications including CertainTeed Elite 5-Star Contractor and Lead Safe Certified Firm status.
Do you offer warranties on installations?
We provide extended warranty coverage through manufacturer partnerships, including CertainTeed's SureStart PLUS program for roofing systems.
What window brands do you install?
We work with trusted manufacturers including Harvey, Paradigm, and Pella to offer high-quality window solutions.
Can you handle historic home renovations?
Yes, we've received national recognition for historic restoration projects while maintaining modern energy efficiency standards.
What payment methods do you accept?
Please contact our office directly for current payment options and financing availability information.
Reviews (5)
Christina Amodie
Jun 17, 2021 Report
Loved everything that had to do with my experience with GSHI. I needed the deck boards on my 80' dock replaced. GSHI immediately jumped in to action. They helped me select with best materials and were there through the entire installation process. I will use them again for other renovation projects at my home. They are professionals in every way. It was like working with an old friend. I recommend them without reservations.
Pamela Bates
Jun 06, 2021 Report
We were very happy with the service and work done on our home by Granite State Home Improvements, from start to finish. Peggy was thorough with assessment of our roof issues, and was responsive anytime we emailed or called. The team was awesome and had obviously done this many times before. Right on time, and made quick work of replacing the front side of our roof, which was older than our addition.

The team took the time to go over the area more than once to check for debris. Peggy came back the to check in and to also go over the area one more time for debris that may have been missed, though there wasn't any. We would definitely use Granite State Home Improvements again. I was happy to hand this home repair job off to the pros! Garrett Bates
Judy Acevedo
Apr 03, 2021 Report
Side door Poor service, Long wait times, Slow response times, took several months to fix what could have been done in a lot less time if they new what they were doing its all on them paid them and i will finish the sloppy work cause im way over frustrated with the whole thing and very distrespectfull when people are in my home, Thats bad CS and not called for dont blame authers for your mistakes!
Anne Dolan
Jun 25, 2019 Report
This company is very unreliable and unprofessional. I hired them in good faith in January and paid good money for work that wasn't done correctly or completely. There were repeated cancellations, delays and excuses. The job was started but still wasn't completed by June, the work done was sloppy and many mistakes were made. I let them know I could no longer deal with the way they did business and hired a reliable contractor to finish it. Check them out on BBB where there are other complaints as well.
TIm Snow
Jan 14, 2017 Report
GSHI replaced the siding and my front door at my house, and I could not have asked for anything better! Professional, affordable, on time and on schedule, which are very important to me. I would recommend them 100%