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Top-Rated Addition to existing structure builders in North-westchester - Updated Nov 2026

Avatar for TimberWolf Contracting LLC.
TimberWolf Contracting LLC.
4.2(
55
)
Addition to Existing Structure - Build

Serving North-westchester, CT and surrounding areas

Approved

In business since 1985

Free estimates

Emergency services offered

"Timber and Meghan were great to work with. The price for the work was extremely reasonable and Timber was very flexible and creative with solutions. The original plan was to power wash and treat the existing fence and pergola. Timber suggested going over the old fence with a new fence and building a new pergola.The overall cost for these changes was pretty much the materials. We provided Timber with a photo of a pergola that we found on line and he recreated it flawlessly. I cannot praise Timber highly enough. We are thrilled with the new deck. One of our friends is a retired home builder who is never impressed. He had nothing but praise for the quality and craftsmanship of the work. We already have plans to engage Timber for additional projects. PS We had to order a new dishwasher while Timber was here. He installed it for us and took the old one away."
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+16

Response rate100%
1 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Aestheticore Construction LLC
Aestheticore Construction LLC
5.0(
2
)
Addition to Existing Structure - Build

Serving North-westchester, CT and surrounding areas

Approved

Free estimates

Warranties offered

Small jobs welcome

"I needed to have the old flooring removed and the new flooring put down. They team was very professional. They realized the subflooring was messed up in a section and made sure to stop and communicate so the job can be doone correctly. I appreciated that factor and was able to approve a replacement of the messed up board the great thing was they were still able to finish the job in the time frame they originally stated! I plan to use them for all jobs moving forward. Priced fair,quality work, and friendly and professional!"
6 neighbors recently requested a quote
Sonart Construction Corp.
2.3(
7
)
Addition to Existing Structure - Build

Serving North-westchester, CT and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

"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."
Avatar for Four Sons Home Improvement LLC
Four Sons Home Improvement LLC
New to Angi
Addition to Existing Structure - Build

Serving North-westchester, CT and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

With over 20 years of hands-on construction experience, Four Sons Home Improvement brings leadership, precision, and integrity to every project. Our background includes serving as a Commercial Carpentry Lead and Foreman, as well as a Residential Project Manager, giving us a unique blend of large-scale expertise and detailed home renovation knowledge.\n\nWe specialize in meticulous, high-quality craftsmanship, backed by industry qualifications including OSHA 30 & OSHA 10 certifications and HIC #0703971.\n\nWhat truly sets us apart is our commitment to communication, quality, cleanliness, and transparency—values we bring to every home we enter. We proudly service Hartford and Tolland Counties, delivering dependable improvements that families can trust.\n\nAt the heart of our work is family. Four Sons Home Improvement is driven by the desire to show our children what hard work, faith, and dedication can achieve—building not only better homes, but a lasting example for the next generation.

Before
Bathroom Remodel
Bathroom Remodel
Bathroom Remodel
Bathroom Remodel

+10

KBK Construction LLC
4.9(
66
)
Addition to Existing Structure - Build

Serving North-westchester, CT and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"KBK Construction does an excellent job. Top notch work that reflects our vision every time. Easy to communicate with, reliable and punctual. We started with a clean slate in the basement and KBK listened, fulfilled every detail and built an amazing playroom with built-ins, bar, and home theatre. They also helped with built-in entryway cubbies which turned out great and working on updating our kitchen. We have been extremely pleased with results and highly recommend!"
Recommended by98%of homeowners
Avatar for Trust Builders, LLC
Trust Builders, LLC
4.8(
20
)
Addition to Existing Structure - Build

Serving North-westchester, CT and surrounding areas

In business since 2000

Emergency services offered

"We had an old deck that needed to be replaced.  When the old deck came down we had to do some grading of the soil.  Jim worked with us to schedule himself and the tractor work to make this happen.  The new deck exceeds our expectations.  Jim has great attention to detail and made sure that every part of the deck looked correct and pleasing to the eye.  We added string lights and outdoor lights to the project and he was happy to add that as well.  It is very hard to find people who are excited about your project and take ownership of it.  We found that in Jim and his team!  We are SUPER happy and would reccommend Jim to anyone.
"
We take great care wit the simplest details.
We can transform the curbside appeal of your home.
Sunroom 1
Stained glass door
Lofted book case

+1

Recommended by93%of homeowners
Avatar for A & W Carpentry
A & W Carpentry
4.9(
26
)
Addition to Existing Structure - Build

Serving North-westchester, CT and surrounding areas

In business since 2007

Free estimates

Credit card accepted

"The door looks great - the job was very good. My only issue was I had mentioned saving the old door to send to Habitat and it was cut so we couldn't donate it. I guess they just forgot. Since then A&W has gotten smaller and their time line is longer so...we'll see if we use them again.
"
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Recommended by100%of homeowners
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FAQs for addition to existing structure building service projects in North-westchester, CT

You can typically raise your roof by four to eight feet, depending on your home's structure and roof design. The exact amount depends on factors like roof slope and framing support. Raising the roof creates additional interior space, enhances natural light, and increases your home's value. Consult a professional to determine the feasible height increase for your home.

Yes, you need a building permit to raise your roof. Obtaining a building permit ensures your project complies with local building codes and safety regulations. A professional contractor can assist with the permit and inspection process and ensure all legal and safety requirements are met. Your contractor will be familiar with building codes in your area, which can differ between cities or states.

While it's possible to raise a flat roof, it requires extensive structural modifications. Flat roofs lack the attic space and support structures of pitched roofs, so raising them involves significant engineering to ensure safety and durability. This process can be complex and costly, so professional assessment is essential before undertaking a project of this magnitude.

The North-westchester, CT homeowners’ guide to addition to existing structure building services

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