Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders in Westport, MA

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Addition to existing structure builders in Westport

Avatar for Casieri Construction Co, LLC
Casieri Construction Co, LLC
5.0(
30
)
Addition to Existing Structure - Build

Serving Westport, MA and surrounding areas

Approved

In business since 1989

Free estimates

Credit card accepted

"We hired James, Dan, and their crew for a major deck renovation. The level of thoughtfulness and craftsmanship throughout the project was outstanding. This was not a simple refresh — it involved removing an existing hot tub, renovating a cabana, reworking the deck framing to convert it into a single-level deck, installing a new staircase, and adding a cable rail system. Every aspect of the project was approached with precision and care, and the finished product is without flaw. They were easy to work with from start to finish, handling decisions and mid-project modifications thoughtfully and professionally. The whole crew was consistently approachable and friendly, and clearly took pride in their work. Daily cleanup was always done well, which we especially appreciated since we had a puppy at the time. Definitely recommended!"
Front view
Side view
Front view
After photo
Front view

+26

Response time10 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for Ocean Break Remodel, LLC
Ocean Break Remodel, LLC
5.0(
19
)
Addition to Existing Structure - Build

Serving Westport, MA and surrounding areas

Approved

In business since 1999

Free estimates

Small jobs welcome

"We hired Ocean Break Remodel to finish our small basement (~225 sq ft). Peter and his crew were great to work with and in addition to doing high quality work, they also finished on schedule and within budget. I am very glad we chose to work with them and would highly recommend them."
kitchen remodel
Framing an Addition
finished addition
exterior cedar shingling Little Compton RI
wooden shingles siding

+90

Response time1 day
Response rate88%
Recommended by94%of homeowners
Avatar for Wood Trades LLC
Wood Trades LLC
4.8(
12
)
Addition to Existing Structure - Build

Serving Westport, MA and surrounding areas

Approved

In business since 2021

Emergency services offered

Customers say: True professional

"I can not say enough about John and his team! From the first time I met John, arrived on time, spoke straight and honestly about what needed to be done. I agreed with his rationale, asked for a quote, received it as promised and it was very reasonable compared to others. The work started on time, status and communication was a 10 out of 10. Most importantly the work was completed as scheduled and the work was just outstanding! I’ve already recommended him to 3 friends. Can’t say enough positive things about his work!"
Bathroom remodel
Bathroom remodel
Bathroom remodel
Additional Photos
Additional Photos

+60

Response time7 hrs
Response rate100%
3 neighbors recently requested a quote
Avatar for Liberty Construction & Landscape
Liberty Construction & Landscape
3.5(
109
)
Addition to Existing Structure - Build

Serving Westport, MA and surrounding areas

Approved

In business since 1987

Free estimates

Customers say: Quality work

"Adam the owner knows construction and is easy to work with. His employees are great to work with, are very skilled as well as respectful of both our home and ourselves. They delivered on what we wanted and proved to be flexible in that regard. One project turned into a second one and we would hire Liberty again."
Traditional Landscape - Arch Grand Multiple Roof Lines
New garage doorway
Transitional Garage - Gray Tile Small Windows On Garage Doors
Traditional Walkway - Grey Tile White Columns Around Walkway
Traditional Home Exterior - Cozy Open Painted Balcony Railing

+8

Response time1 day
Response rate100%
14 neighbors recently requested a quote
Avatar for Doherty Construction LLC
Doherty Construction LLC
5.0(
7
)
Addition to Existing Structure - Build

Serving Westport, MA and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"Highly recommend! I recently hired Doherty Construction for a major renovation project at my rental property and couldn’t be happier with the results. Dan stood out because of his knowledge, honesty, and fair pricing. When adding a new bathroom to a very old building, he quickly identified a major plumbing challenge that required new pipes in the crawl space. His assessment, estimate, and scope of work were accurate from the start. In addition to building the new bathroom, Dan and his crew renovated an existing bathroom, kitchen, rebuilt stairs, closets and installed LVP and Pergo flooring in several rooms. The quality of the workmanship and attention to detail were excellent. Dan was professional, responsive, and great to work with throughout the project. He was especially helpful in brainstorming solutions and navigating the inevitable surprises that come with renovating an older property. The project was completed on time, and I would absolutely hire them again!"
New home
New home
New home
New home
New home

+15

1 neighbors recently requested a quote
Recommended by42%of homeowners
Avatar for LionHeart Finish Carpentry, Inc.
LionHeart Finish Carpentry, Inc.
5.0(
9
)
Addition to Existing Structure - Build

Serving Westport, MA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"I recently hired LionHeart Finish Carpentry for a bathroom remodel, and I honestly couldn?t be happier with the results. The entire process was smooth from start to finish. They were professional, punctual, respectful, and paid close attention to every detail. The quality of the work truly surprised me ? the bathroom came out even better than I expected. Everything looks clean, modern, and very well finished. They communicated well throughout the project and made sure everything was done the right way. It?s hard to find contractors who combine quality, professionalism, and reliability like this. I would definitely hire them again and highly recommend them to anyone looking for remodeling or finish carpentry work."
Kitchen
Kitchen
Kitchen
Kitchen
Deck

+9

Avatar for EAP Construction
EAP Construction
4.1(
23
)
Addition to Existing Structure - Build

Serving Westport, MA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"To be fully honest, at first I was a little skeptical, as I am with most contractors, but they came in on time, were very clean, and were punctual about the things I asked for and needed done. The crew was efficient and the work was done correctly. They even helped and built my elderly neighbor a garage bathroom after seeing the work at my house. I definitely will have them back to build my ADU for my in-laws."
Remodeling - Kitchen & Bathroom Project
Remodeling - General Project
General Remodeling Project
Remodeling - General Project
Remodeling - Kitchen & Bathroom Project

+23

Response time2 days
Response rate100%
14 neighbors recently requested a quote
Avatar for PIERRE CONSTRUCTION LLC
PIERRE CONSTRUCTION LLC
3.9(
35
)
Addition to Existing Structure - Build

Serving Westport, MA and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"Pierre Construction demo'd an existing porch and replaced it with a covered farmers porch, removed an existing exterior door and replaced with a picture window, replaced 8 double hung windows, and resided our home, and we can't speak any more highly of Dave and his crew. They were a pleasure to work with, do extremely high quality work, are extremely creative and talented, and are open minded and reassuring in the project. The communication and follow through was great throughout the entire project. I would highly recommend Dave to anyone and wouldn't think twice of using him again for anything as small as a minor repair to something as substantial as a full remodel/new build."
Response time2 days
62 neighbors recently requested a quote
Recommended by42%of homeowners
...
Showing 1-10 of 169
FAQs for addition to existing structure building service projects in Westport, MA

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 Westport, MA 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.