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

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

Serving Assonet, MA and surrounding areas

Approved

In business since 1989

Free estimates

Credit card accepted

"Hired Casieri construction to build decks and a carport as part of a new construction project. James and his crew do a great job and he is very responsive and timely. I would highly recommend them for any projects!"
Front view
Side view
Front view
After photo
Front view

+26

Response time10 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for US ProPaint and Renovation, Inc.
US ProPaint and Renovation, Inc.
4.6(
280
)
Addition to Existing Structure - Build

Serving Assonet, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2003

Free estimates

Emergency services offered

"I needed a pergola which supported wisteria vines rebuilt after a windstorm knocked several support columns and wooden structures to the ground. They removed and replaced the old lattice work with a combination of new and original wood and left me with a solid new pergola in less than a day. Very happy, and would definitely use them again."
After
Kitchen after
After
Exterior siding
Siding

+791

Response time1 day
785 neighbors recently requested a quote
Recommended by87%of homeowners
Ross Construction
4.1(
25
)
Addition to Existing Structure - Build

Serving Assonet, MA and surrounding areas

Approved

In business since 2008

Free estimates

Small jobs welcome

"Very quality conscious contractor who made sure we were happy with the materials and workmanship provided. The business owner checked the daily progress of the work crew and ensured the job was executed professionally and quickly. Adjustments were made per our request without issue when we wished to fine tune details. Would definitely hire again."
Response time2 days
Recommended by94%of homeowners
Avatar for Wood Trades LLC
Wood Trades LLC
4.8(
12
)
Addition to Existing Structure - Build

Serving Assonet, MA and surrounding areas

Approved

In business since 2021

Emergency services offered

Customers say: True professional

"I recommend this wonderful company without any hesitation. I first contacted Wood Trades LLC seeking a deck quote in September 2024, and John and Karin came out the very next day. From day one, John and Karin provided impeccable service. I cannot say enough wonderful things about their communication, transparency, honestly, and reliability. All current insurance/contractor licenses were provided up front, and any change in cost was documented through clear contracts. In addition, they patiently navigated me through a difficult permitting process from start to finish. Once the work was started, I had a gorgeous new deck in just over one week. I cannot thank this company enough for gaining, and more importantly, maintaining my trust through this project. I certainly look forward to working with Wood Trades again, and highly recommend their services to anyone seeking high quality results from a wonderful company. Exceeded expectations!"
Bathroom remodel
Bathroom remodel
Bathroom remodel
Additional Photos
Additional Photos

+60

Response time7 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for L2 Homes
L2 Homes
5.0(
15
)
Addition to Existing Structure - Build

Serving Assonet, MA and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"NML Legacy was very responsive and quick to schedule. They prepared our space taking care of our belongings, completed the task start to finish and followed up to ensure we were pleased with the final result. Would recommend!"
Rubber Roof Install
Roof Replacement
Roof Replacement
Roof Replacement
Complete Home Renovation

+8

6 neighbors recently requested a quote
Avatar for Doherty Construction LLC
Doherty Construction LLC
5.0(
7
)
Addition to Existing Structure - Build

Serving Assonet, 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 Assonet, 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 Assonet, 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%
11 neighbors recently requested a quote
Avatar for PIERRE CONSTRUCTION LLC
PIERRE CONSTRUCTION LLC
3.9(
35
)
Addition to Existing Structure - Build

Serving Assonet, 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
45 neighbors recently requested a quote
Recommended by42%of homeowners
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FAQs for addition to existing structure building service projects in Assonet, 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 Assonet, 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.