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Find Addition to existing structure builders in Cornwall

MC Squared Renovations

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Approved Pro

MC Squared Renovations

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
10 years of experience
Free onsite estimate

MC Squared Renovations is committed to excellence in every aspect of our business. 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.

MC Squared Renovations is committed to excellence in every aspect of our business. 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.


Avatar for American Pioneer Construction

American Pioneer Construction

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Approved Pro

American Pioneer Construction

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
33 years of experience
Free onsite estimate

I founded American Pioneer Construction in July 1993 to give my customers top quality design and installation in a timely manner and at a fair and competitive price. Our goal is to help you create your dreams.We are fully licensed in Westchester and Putnam counties in New York. We have a multi million dollar insurance policy which has never been used in 30 years. The reason is that cleanliness and safety are our top priorities. We are on site every day until the job is completed. We have massive experience in indoor and outdoor renovations for your home. Indoors includes kitchens, bathrooms, basements, doors, windows, moldings, additions, and custom cabinet and shelving units of any size. Also, outdoors we build decks, covered porches, walkways, patios, and fire pits. We have built over 300 Koi ponds that have been featured in international magazines and huge pond tours. We also frame/build garages,sheds, and outdoor bars. Give us a call so you can find out how we can help you.

I founded American Pioneer Construction in July 1993 to give my customers top quality design and installation in a timely manner and at a fair and competitive price. Our goal is to help you create your dreams.We are fully licensed in Westchester and Putnam counties in New York. We have a multi million dollar insurance policy which has never been used in 30 years. The reason is that cleanliness and safety are our top priorities. We are on site every day until the job is completed. We have massive experience in indoor and outdoor renovations for your home. Indoors includes kitchens, bathrooms, basements, doors, windows, moldings, additions, and custom cabinet and shelving units of any size. Also, outdoors we build decks, covered porches, walkways, patios, and fire pits. We have built over 300 Koi ponds that have been featured in international magazines and huge pond tours. We also frame/build garages,sheds, and outdoor bars. Give us a call so you can find out how we can help you.


Avatar for Watson Homes

Watson Homes

4.36(
7
)
Approved Pro

Watson Homes

4.36(
7
)
Approved Pro
Customers say: Quick response
21 years of experience

We are a locally owned and operated company. We value honesty and integrity in all aspects of our business. We offer a variety of home improvement services that are customized to each individual project. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

"Got it all done quick and CLEAN! Brian did a great job. "

Ellen D on May 2025

We are a locally owned and operated company. We value honesty and integrity in all aspects of our business. We offer a variety of home improvement services that are customized to each individual project. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

"Got it all done quick and CLEAN! Brian did a great job. "

Ellen D on May 2025


Avatar for Shaping Houses LLC

Shaping Houses LLC

5.00(
6
)
Approved Pro

Shaping Houses LLC

5.00(
6
)
Approved Pro
26 years of experience
Free onsite estimate

Shaping Houses is committed to excellence in every aspect of our business. 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.

"Roof repair- Jonathan was quick with a fair, reasonable estimate. He started and completed the job quickly. I would recommend to friends."

Mark A on October 2025

Shaping Houses is committed to excellence in every aspect of our business. 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.

"Roof repair- Jonathan was quick with a fair, reasonable estimate. He started and completed the job quickly. I would recommend to friends."

Mark A on October 2025


Avatar for American Pioneer Construction

American Pioneer Construction

5.00(
4
)
Approved Pro

American Pioneer Construction

5.00(
4
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
19 local quotes requested

I founded American Pioneer Construction in July 1993 to give my customers top quality design and installation in a timely manner and at a fair and competitive price. Our goal is to help you create your dreams.We are fully licensed in Westchester and Putnam counties in New York. We have a multi million dollar insurance policy which has never been used in 30 years. The reason is that cleanliness and safety are our top priorities. We are on site every day until the job is completed. We have massive experience in indoor and outdoor renovations for your home. Indoors includes kitchens, bathrooms, basements, doors, windows, moldings, additions, and custom cabinet and shelving units of any size. Also, outdoors we build decks, covered porches, walkways, patios, and fire pits. We have built over 300 Koi ponds that have been featured in international magazines and huge pond tours. We also frame/build garages,sheds, and outdoor bars. Give us a call so you can find out how we can help you.

"American Pioneer has renovated 90% of my home over the past 10 years and has always done a great job. The price for the work has always been reasonable and the price quote at the start of the job is the price paid at completion. They show up when they say they will be there and stay until the job is finished. The work product is always top quality which is why we’ve used them to renovate almost every aspect of our home. I would highly recommend their services."

Joe O on December 2024

I founded American Pioneer Construction in July 1993 to give my customers top quality design and installation in a timely manner and at a fair and competitive price. Our goal is to help you create your dreams.We are fully licensed in Westchester and Putnam counties in New York. We have a multi million dollar insurance policy which has never been used in 30 years. The reason is that cleanliness and safety are our top priorities. We are on site every day until the job is completed. We have massive experience in indoor and outdoor renovations for your home. Indoors includes kitchens, bathrooms, basements, doors, windows, moldings, additions, and custom cabinet and shelving units of any size. Also, outdoors we build decks, covered porches, walkways, patios, and fire pits. We have built over 300 Koi ponds that have been featured in international magazines and huge pond tours. We also frame/build garages,sheds, and outdoor bars. Give us a call so you can find out how we can help you.

"American Pioneer has renovated 90% of my home over the past 10 years and has always done a great job. The price for the work has always been reasonable and the price quote at the start of the job is the price paid at completion. They show up when they say they will be there and stay until the job is finished. The work product is always top quality which is why we’ve used them to renovate almost every aspect of our home. I would highly recommend their services."

Joe O on December 2024


Howe Construction, LLC

5.00(
1
)
Approved Pro

Howe Construction, LLC

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
28 years of experience

I take pride in my quality craftsmanship. We are owner operated, and believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. Give us a call today! We look forward to working with you!

"They did a fantastic job, the renovation has been finished fast so we can stay in the house during the entire process and Shawn and his crew worked quickly to help us get back to normal as soon as possible. I would recommend them to anyone wanting a quality job done."

Stephanie A on September 2023

I take pride in my quality craftsmanship. We are owner operated, and believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. Give us a call today! We look forward to working with you!

"They did a fantastic job, the renovation has been finished fast so we can stay in the house during the entire process and Shawn and his crew worked quickly to help us get back to normal as soon as possible. I would recommend them to anyone wanting a quality job done."

Stephanie A on September 2023


"Superb. Great contractor. Skilled in all areas of building construction, demolition, heavy equipment operation. Very nice guy. Hard working. Reasonable pricing."

Keith I on December 2023

Excavating land clearing old barn removal trenching demo foundation digging retaining walls and complete home renovations.

"Superb. Great contractor. Skilled in all areas of building construction, demolition, heavy equipment operation. Very nice guy. Hard working. Reasonable pricing."

Keith I on December 2023


Avatar for Benedict's Construction

Benedict's Construction

5.00(
4
)
Approved Pro

Benedict's Construction

5.00(
4
)
Approved Pro
Customers say: Quick response
10 local quotes requested
18 years of experience

AntonP Handyman Corporation is committed to excellence in every aspect of our business. 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.

"Antón was very accurate with his prices and very professional. It was a pleasure working with him and his crew. I have used him for several projects in our home and I will definitely use him again "

Desiree O on December 2025

AntonP Handyman Corporation is committed to excellence in every aspect of our business. 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.

"Antón was very accurate with his prices and very professional. It was a pleasure working with him and his crew. I have used him for several projects in our home and I will definitely use him again "

Desiree O on December 2025


"It could not have gone any better. I wish we would have met Steve 20 years ago. He is knowledgeable, professional and his work shows his years of experience."

Jimmy/ Lena R on March 2024

I have been in the construction business for over 30 years and am very knowledgable in all areas of the trade. I am fully insured.

"It could not have gone any better. I wish we would have met Steve 20 years ago. He is knowledgeable, professional and his work shows his years of experience."

Jimmy/ Lena R on March 2024


Avatar for JOHN SALA CONSTRUCTION

JOHN SALA CONSTRUCTION

4.43(
7
)
Approved Pro

JOHN SALA CONSTRUCTION

4.43(
7
)
Approved Pro
Customers say: Quick response
34 years of experience
Free onsite estimate

We have the experience and dedication to get the job done right! Specializing in remodeling services; We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today!

"I can’t say enough good things about John Sala Construction. This is not the first time they have done work for me and I have always been happy. Quality of work is incredible, communication is great and they are so easy to work with. My husband and I built an apartment onto our house with a basement underneath it. Everything proceeded in a timely manor and John always took time to answer my questions. I HIGHLY recommend them."

Audrey M on January 2025

We have the experience and dedication to get the job done right! Specializing in remodeling services; We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today!

"I can’t say enough good things about John Sala Construction. This is not the first time they have done work for me and I have always been happy. Quality of work is incredible, communication is great and they are so easy to work with. My husband and I built an apartment onto our house with a basement underneath it. Everything proceeded in a timely manor and John always took time to answer my questions. I HIGHLY recommend them."

Audrey M on January 2025

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FAQs for addition to existing structure building service projects in Cornwall, NY

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 Cornwall, NY 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.