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Find Addition to existing structure builders in Watertown

"They showed up when they said they would and finished the job also when they said it would ."

Steven M on June 2021

xx

"They showed up when they said they would and finished the job also when they said it would ."

Steven M on June 2021


Avatar for M Builders, LLC

M Builders, LLC

32 School St
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

M Builders, LLC

32 School St
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
4 years of experience
Free onsite estimate

Our goal is to complete your project to perfection. We look forward to building long lasting relationships with the customers that we serve. We look forward to serving you. Call us today! You will not be disappointed. With 25+ years of experience in construction, Luis Matute and Rony Mendez, longtime friends, decided to put together their skills and found M Builders LLC. Luis holds a General Contractor license, Home improvement license, alongside with other licenses. He has an electrical company and has been supervising construction sites for years now. Rony Mendez, also has an Electrical License with multiple other licenses and has a Security Systems company. He has been supervising construction sites alongside with Luis for years. They have been working together for so long that they do not only consider each other business partners but also family. M Builders is coming to simplify construction for their clients in the State of Massachusetts.

Our goal is to complete your project to perfection. We look forward to building long lasting relationships with the customers that we serve. We look forward to serving you. Call us today! You will not be disappointed. With 25+ years of experience in construction, Luis Matute and Rony Mendez, longtime friends, decided to put together their skills and found M Builders LLC. Luis holds a General Contractor license, Home improvement license, alongside with other licenses. He has an electrical company and has been supervising construction sites for years now. Rony Mendez, also has an Electrical License with multiple other licenses and has a Security Systems company. He has been supervising construction sites alongside with Luis for years. They have been working together for so long that they do not only consider each other business partners but also family. M Builders is coming to simplify construction for their clients in the State of Massachusetts.


Legacy Building Group, LLC

13 George St Apt 3
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Legacy Building Group, LLC

13 George St Apt 3
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
1 years of experience
Free onsite estimate

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!


J.J Devine Building & Remodeling

94 Adams Street
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

J.J Devine Building & Remodeling

94 Adams Street
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
25 years of experience
Free onsite estimate

*Licensed and Insured* We take great pride our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

*Licensed and Insured* We take great pride our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.


Avatar for R & J Construction

R & J Construction

532 Water St
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

R & J Construction

532 Water St
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
4 years of experience
Free onsite estimate

We take great pride our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

We take great pride our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.


Clement Construction Inc is the reliable choice for your remodeling needs. We specialize in high end basement remodels. We pride ourselves on the quality of our work and customer relations. So give us a call!


Avatar for Hancock Building Associates Inc

Hancock Building Associates Inc

248 Mill Rd
4.88(
67
)
Approved Pro

Hancock Building Associates Inc

248 Mill Rd
4.88(
67
)
Approved Pro
Customers say: True professional
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
17 local quotes requested

The complete residential remodeling company for over forty years. We have ten full time, year-round area craftsmen that work exclusively for us full time. We limit subcontracting & focus on quality & standing behind our work. Home improvement registration #100158, construction supervisor license #16524, certified aging-in-place specialist, certified master roofer, vsi certified master vinyl sider, certified skylight installer. Call us today! (978)256-2727

"Attention to detail , timely delivery , team coordination and voila a lovely renovation . Such a pleasure to work with ! Thank you so much . This motivated me to renovate the other parts of my home with you ! Thank you most of all for helping my dreams come true ."

Ratti H on June 2023

The complete residential remodeling company for over forty years. We have ten full time, year-round area craftsmen that work exclusively for us full time. We limit subcontracting & focus on quality & standing behind our work. Home improvement registration #100158, construction supervisor license #16524, certified aging-in-place specialist, certified master roofer, vsi certified master vinyl sider, certified skylight installer. Call us today! (978)256-2727

"Attention to detail , timely delivery , team coordination and voila a lovely renovation . Such a pleasure to work with ! Thank you so much . This motivated me to renovate the other parts of my home with you ! Thank you most of all for helping my dreams come true ."

Ratti H on June 2023


McCabe General Contracting LLC

191 Middlesex Ave.
5.00(
4
)
Approved Pro

McCabe General Contracting LLC

191 Middlesex Ave.
5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
24 years of experience

With 17 years of experience in the industry McCabe General Contracting LLC is the company you need to take care of your home and business. We offer quality work at an affordable rate. Give McCabe General Contracting LLC a call today! We look forward to working with you!

"Competent and reliable team, solid schedule, very professional result. Neighbors see their results and often seek their help. Straightforward and knowledgeable. Comfortable interaction since 2015. They stand behind their work and take pride in it. We have a house built in 1838 which needed external repairs to deal with weather, recently becoming more severe. They reconstructed and restored an upper rear deck, dining room porch and far-back lower deck, repaired a front dormer, repaired an entire front & side façade and then recovered it with new clapboard, installed millwork around new Pella windows, installed real shutters, & a far-back canopy. They rebuilt an elaborate rear yard fence and built a privacy gate. It is our pleasure to write this review, we feel lucky to have them available."

Kent E on January 2024

With 17 years of experience in the industry McCabe General Contracting LLC is the company you need to take care of your home and business. We offer quality work at an affordable rate. Give McCabe General Contracting LLC a call today! We look forward to working with you!

"Competent and reliable team, solid schedule, very professional result. Neighbors see their results and often seek their help. Straightforward and knowledgeable. Comfortable interaction since 2015. They stand behind their work and take pride in it. We have a house built in 1838 which needed external repairs to deal with weather, recently becoming more severe. They reconstructed and restored an upper rear deck, dining room porch and far-back lower deck, repaired a front dormer, repaired an entire front & side façade and then recovered it with new clapboard, installed millwork around new Pella windows, installed real shutters, & a far-back canopy. They rebuilt an elaborate rear yard fence and built a privacy gate. It is our pleasure to write this review, we feel lucky to have them available."

Kent E on January 2024


Avatar for Boston Construct

Boston Construct

1660 Soldiers Field Road, Suite 7-1094
4.92(
11
)
Approved Pro

Boston Construct

1660 Soldiers Field Road, Suite 7-1094
4.92(
11
)
Approved Pro
Customers say: Quality work
6 years of experience
Free onsite estimate

Boston Construct, LLC is committed to excellence in every aspect of our business. With 25 years of expierence, we uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business. Be sure to checkout our website!

"Hello everyone ! We Living in Dorchester, MA we were nervous about tackling a full home renovation. Boston Construct LLC made it easy. They kept us updated, stuck to the budget, and the craftsmanship is excellent. We?re proud of our home again thanks to their work. They turn our bathroom to a masterpiece , we are so happy with the results !!"

Beatriz D on October 2025

Boston Construct, LLC is committed to excellence in every aspect of our business. With 25 years of expierence, we uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business. Be sure to checkout our website!

"Hello everyone ! We Living in Dorchester, MA we were nervous about tackling a full home renovation. Boston Construct LLC made it easy. They kept us updated, stuck to the budget, and the craftsmanship is excellent. We?re proud of our home again thanks to their work. They turn our bathroom to a masterpiece , we are so happy with the results !!"

Beatriz D on October 2025


Kenny Builders

P.o.Box 302090
5.00(
12
)
Approved Pro

Kenny Builders

P.o.Box 302090
5.00(
12
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
23 local quotes requested

General contractor, remodeling, new construction, fine custom building. All phases of remodeling for your home, business, bathrooms, kitchens, finishing basements, and more! Don't see your need on our list of services? Give us a call to further discuss your needs!

"Fearghal Kenny turned our 130-year-old Victorian attic into a beautiful living space with modern aesthetics and time-period sensibilities. He is a highly skilled craftsman with years of experience and a fantastic eye for detail. He managed his team of quality subcontractors beautifully. He was flexible, responded immediately to inquiries, and was respectful of requests. Our new living space, which includes a bathroom, is absolutely beautiful! We highly recommend Kenny Builders and plan to hire him for our next project."

carolyn n on August 2023

General contractor, remodeling, new construction, fine custom building. All phases of remodeling for your home, business, bathrooms, kitchens, finishing basements, and more! Don't see your need on our list of services? Give us a call to further discuss your needs!

"Fearghal Kenny turned our 130-year-old Victorian attic into a beautiful living space with modern aesthetics and time-period sensibilities. He is a highly skilled craftsman with years of experience and a fantastic eye for detail. He managed his team of quality subcontractors beautifully. He was flexible, responded immediately to inquiries, and was respectful of requests. Our new living space, which includes a bathroom, is absolutely beautiful! We highly recommend Kenny Builders and plan to hire him for our next project."

carolyn n on August 2023

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FAQs for addition to existing structure building service projects in Watertown, MA

Yes, hidden rooms are legal, as long as they meet all local building regulations. If you sell your house, most states require homeowners to disclose full houseplans, which would include any hidden rooms.

If your secret room is a safe room, it should contain a means of communication aside from a cell phone, such as a shortwave radio. You should also have plenty of drinking water, a portable generator, emergency food supplies, blankets, pillows, flashlights, batteries and a first aid kit.

Any time you update your home’s square footage, you increase its value, but a secret room is a niche feature that doesn't rank high on every buyer’s list of must-haves. Investing your money in remodeling more common living areas like bedrooms, bathrooms, or kitchens will have a higher ROI than adding a secret room. Many secret rooms can act as entertainment spaces (think a game room or wine cellar) or quiet spaces (a library or study), so when building your secret room you may want to consider its versatility for when you’re ready to sell.

The Watertown, 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.

  • A renovated kitchen with a waterfall island

    HomeAdvisor’s DIY Kitchen Remodel Cost Guide looks at the cost of buying supplies and doing the work yourself. Find the key cost factors and how to cut expenses.

  • Secret room within bookcase

    HomeAdvisor's expert guide walks you through the cost to build a secret room, whether you're creating a safe room for security or a fun space to fulfil your childhood fantasies. Use this guide to help plan your secret room project and explore room, concea