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Addition to existing structure builders in Pleasantville

Avatar for Ipala Landscaping & Construction
Ipala Landscaping & Construction
101 W Hyatt Ave
5.00(
2
)
Approved Pro
Ipala Landscaping & Construction
101 W Hyatt Ave
5.00(
2
)
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!

"I had my basement and garage completely renovated. My wife was close to giving birth when we requested the work and the team made an effort to getting the basement all done before the baby was born. "

Dan R on March 2025

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!

"I had my basement and garage completely renovated. My wife was close to giving birth when we requested the work and the team made an effort to getting the basement all done before the baby was born. "

Dan R on March 2025


Avatar for JLR Design And Building Consultants, LLC
JLR Design And Building Consultants, LLC
2777 Schley Avenue, Unit 3A
5.00(
4
)
Approved Pro
JLR Design And Building Consultants, LLC
2777 Schley Avenue, Unit 3A
5.00(
4
)
Approved Pro
Customers say: Quick response
4 years of experience
Free onsite estimate

At JLR Design And Building Consultants, LLC we pride ourselves on being the best Additions and Remodels company in the area. We've built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing. Being a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started!

"Extremely professional. Worked in a timely fashion and most importantly discussed prices and helped me work according to my budget. I now have my dream kitchen."

Loreen M on January 2022

At JLR Design And Building Consultants, LLC we pride ourselves on being the best Additions and Remodels company in the area. We've built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing. Being a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started!

"Extremely professional. Worked in a timely fashion and most importantly discussed prices and helped me work according to my budget. I now have my dream kitchen."

Loreen M on January 2022


MC Squared Renovations
14 Edgewood Terrace
New on HomeAdvisorNew on Angi
Approved Pro
MC Squared Renovations
14 Edgewood Terrace
New on AngiNew on HomeAdvisor
Approved Pro
9 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.


ROK Construction, Inc.
149 Devoe Road
4.90(
25
)
Approved Pro
ROK Construction, Inc.
149 Devoe Road
4.90(
25
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 local quotes requested

*General Contractor

"I interviewed a few people before making my decision using Rok and Iâ m glad I did. I did a complete gut renovation and he basically made my revision come to fruition. Even with the delayed/problems with renovations he always kept me informed. U told me he would always have someone at my house working and that he did. Not like the contractors Iâ ve worked with in the past that say that but then once they get the job.. the â oh someone would be thereâ and no one comes. I had a leak issue and he made it to my house 10 pm to assure it was taken of. Roc is reliable and hard working."

Taffrena T on September 2024

*General Contractor

"I interviewed a few people before making my decision using Rok and Iâ m glad I did. I did a complete gut renovation and he basically made my revision come to fruition. Even with the delayed/problems with renovations he always kept me informed. U told me he would always have someone at my house working and that he did. Not like the contractors Iâ ve worked with in the past that say that but then once they get the job.. the â oh someone would be thereâ and no one comes. I had a leak issue and he made it to my house 10 pm to assure it was taken of. Roc is reliable and hard working."

Taffrena T on September 2024


Avatar for TOP BEST QUALITY HOME IMPROVEMENT INC.
TOP BEST QUALITY HOME IMPROVEMENT INC.
1 Calam Ave, Unit 1
5.00(
1
)
Approved Pro
TOP BEST QUALITY HOME IMPROVEMENT INC.
1 Calam Ave, Unit 1
5.00(
1
)
Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
15 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Heart full good work"

Aron L on May 2024

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Heart full good work"

Aron L on May 2024


EJ Squared, Inc.
177 Ash Burton Avenue
5.00(
4
)
Approved Pro
EJ Squared, Inc.
177 Ash Burton Avenue
5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
40 years of experience

At EJ Squared, Inc., we are a well established business in Yonkers offering the finest in craftsmanship and quality. When it comes to professionalism and customer service, we are unmatched in the region. For the best of the best, call today for a free estimate on your next project. We would love to add you to our list of satisfied customers!

"Jorge was attentive, thorough and accessible. Our floors look great!"

Todd T on July 2023

At EJ Squared, Inc., we are a well established business in Yonkers offering the finest in craftsmanship and quality. When it comes to professionalism and customer service, we are unmatched in the region. For the best of the best, call today for a free estimate on your next project. We would love to add you to our list of satisfied customers!

"Jorge was attentive, thorough and accessible. Our floors look great!"

Todd T on July 2023


Avatar for American Pioneer Construction
American Pioneer Construction
185 Cortlandt St
New on HomeAdvisorNew on Angi
Approved Pro
American Pioneer Construction
185 Cortlandt St
New on AngiNew on HomeAdvisor
Approved Pro
32 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 Douglas Marshall Cooper Associates, LLC
Douglas Marshall Cooper Associates, LLC
57 Westchester Avenue
4.63(
22
)
Approved Pro
Douglas Marshall Cooper Associates, LLC
57 Westchester Avenue
4.63(
22
)
Approved Pro
Customers say: Quick response
29 years of experience
Free onsite estimate

Douglas Marshall Cooper Associates is a full-service design and construction firm whose practice encompasses both new and existing buildings of residential and commercial use, as well as speculative housing and development. Mr. Cooper’s office is located in Pound Ridge, New York and includes a staff of himself, an associate partner, three assistants and a host of carpenters, masons, and laborers, in addition to various subcontractors that work on projects small to large. Douglas Marshall Cooper Associate’s roots are based in Construction, Design, Real Estate Investment and Development & Construction Management. Our portfolio includes a wide range of work across these fields. Our uniqueness comes from understanding what it is to be the Owner, the Developer and the Builder –- a trifecta that is evident in DMC Associate’s core portfolio of prestigious residential, commercial, and corporate projects. Douglas Marshall Cooper Associates, LLC...a solid track record. A powerful future.

"I wish I could give zero stars. We hired Douglas for a kitchen remodel which involved installing a kitchen island, pantry, and all the related plumbing and electrical work. The communication between Douglas and his carpenter was terrible. We submitted sketches and agreed upon the design for the cabinets which were meant to be overlaid. When the island arrived, the cabinets were inset which did not match the rest of the kitchen. In addition, the kitchen island has split and cracked at more than half of the joints. The pantry cabinet has split and areas of unpainted MDF are showing. We have needed to paint and touch up many of these spots. Regarding the plumbing, we have had multiple significant leaks from piping and tubing that the team installed. Water has leaked even through the floor and into the basement. Upon review from other plumbers, all have confirmed the parts used were cheap and of low quality, and the workmanship was subpar. After a major leak in the middle of the night, we reached out to Douglas and respectfully voiced our issues and complaints. He ignored us for a full month, and then instead of simply stopping by to take a look at the problems (which would have been the first major step to alleviating our frustrations), he responded in a despicable manner. He even included the following quote from his lawyer, He laughed saying that perhaps you lost your job (due to the CoronaVirus) and were probably scrounging for any money you could scrape up. Who would want to work with someone like this?"

Keri P on October 2020

Douglas Marshall Cooper Associates is a full-service design and construction firm whose practice encompasses both new and existing buildings of residential and commercial use, as well as speculative housing and development. Mr. Cooper’s office is located in Pound Ridge, New York and includes a staff of himself, an associate partner, three assistants and a host of carpenters, masons, and laborers, in addition to various subcontractors that work on projects small to large. Douglas Marshall Cooper Associate’s roots are based in Construction, Design, Real Estate Investment and Development & Construction Management. Our portfolio includes a wide range of work across these fields. Our uniqueness comes from understanding what it is to be the Owner, the Developer and the Builder –- a trifecta that is evident in DMC Associate’s core portfolio of prestigious residential, commercial, and corporate projects. Douglas Marshall Cooper Associates, LLC...a solid track record. A powerful future.

"I wish I could give zero stars. We hired Douglas for a kitchen remodel which involved installing a kitchen island, pantry, and all the related plumbing and electrical work. The communication between Douglas and his carpenter was terrible. We submitted sketches and agreed upon the design for the cabinets which were meant to be overlaid. When the island arrived, the cabinets were inset which did not match the rest of the kitchen. In addition, the kitchen island has split and cracked at more than half of the joints. The pantry cabinet has split and areas of unpainted MDF are showing. We have needed to paint and touch up many of these spots. Regarding the plumbing, we have had multiple significant leaks from piping and tubing that the team installed. Water has leaked even through the floor and into the basement. Upon review from other plumbers, all have confirmed the parts used were cheap and of low quality, and the workmanship was subpar. After a major leak in the middle of the night, we reached out to Douglas and respectfully voiced our issues and complaints. He ignored us for a full month, and then instead of simply stopping by to take a look at the problems (which would have been the first major step to alleviating our frustrations), he responded in a despicable manner. He even included the following quote from his lawyer, He laughed saying that perhaps you lost your job (due to the CoronaVirus) and were probably scrounging for any money you could scrape up. Who would want to work with someone like this?"

Keri P on October 2020


Avatar for Talo Architect
Talo Architect
700 Scarsdale Ave 2D
5.00(
2
)
Approved Pro
Talo Architect
700 Scarsdale Ave 2D
5.00(
2
)
Approved Pro
Customers say: Quick response
41 years of experience
Free onsite estimate

At Talo Architect, our focus is on the highest quality residential homes and additions in addition to commercial High Rise sector. Get in touch with us today. We are based in the New York Metropolitan area and operate globally. Together with cutting edge engineers and consultants, on time delivery and cost control is our first priority. We operate on virtual CAD 3D. From the earliest moment, our clients can view the design in real-time, as it evolves in 3D. If required, individual milestones are captured as required in traditional model and brochure formats for publications and meetings with investors, etc. Along with this feature, up-to-date cost estimates can be printed at any time with individual line items. We look forward to earning your business!

"Architecture drawings for a minor remodel were done on time and on budget. The town asked for one update to the drawings and Talo Architect made the update promptly. This update required consulting a licensed engineer. Talo was able to get input from an engineer and update the drawings accordingly very quickly. Talo is a very competent architect. He keeps abreast with the latest building and energy saving techniques by attending training and seminars. I had a great conversation with him about above-sheathing roof insulation - a technique that is highly recommended by building science professionals but not known to many architects and roofing companies. He is also very familiar with net-zero (or near-net-zero) home remodeling. I highly recommend Talo Architect."

Atul C on October 2018

At Talo Architect, our focus is on the highest quality residential homes and additions in addition to commercial High Rise sector. Get in touch with us today. We are based in the New York Metropolitan area and operate globally. Together with cutting edge engineers and consultants, on time delivery and cost control is our first priority. We operate on virtual CAD 3D. From the earliest moment, our clients can view the design in real-time, as it evolves in 3D. If required, individual milestones are captured as required in traditional model and brochure formats for publications and meetings with investors, etc. Along with this feature, up-to-date cost estimates can be printed at any time with individual line items. We look forward to earning your business!

"Architecture drawings for a minor remodel were done on time and on budget. The town asked for one update to the drawings and Talo Architect made the update promptly. This update required consulting a licensed engineer. Talo was able to get input from an engineer and update the drawings accordingly very quickly. Talo is a very competent architect. He keeps abreast with the latest building and energy saving techniques by attending training and seminars. I had a great conversation with him about above-sheathing roof insulation - a technique that is highly recommended by building science professionals but not known to many architects and roofing companies. He is also very familiar with net-zero (or near-net-zero) home remodeling. I highly recommend Talo Architect."

Atul C on October 2018


Hello Chapter Westchester, LLC
345 7TH AVE FL 9
5.00(
21
)
Approved Pro
Hello Chapter Westchester, LLC
345 7TH AVE FL 9
5.00(
21
)
Approved Pro
Customers say: Quick response
9 years of experience
Free onsite estimate

From stylish kitchen renovations to bathroom remodels to full-home projects, Chapter makes it easy to turn your vision into a reality, all while keeping your project on budget and on schedule. We?re fully licensed and insured and have a depth of experience to elevate your home.

"Chapter did an outstanding job on our renovation. They were professional, reliable, and full of great ideas that made our space more functional and stylish. The project finished on time, and their attention to detail really stood out. Highly recommend them if you're looking for quality work and a smooth experience!"

Jaime S on April 2025

From stylish kitchen renovations to bathroom remodels to full-home projects, Chapter makes it easy to turn your vision into a reality, all while keeping your project on budget and on schedule. We?re fully licensed and insured and have a depth of experience to elevate your home.

"Chapter did an outstanding job on our renovation. They were professional, reliable, and full of great ideas that made our space more functional and stylish. The project finished on time, and their attention to detail really stood out. Highly recommend them if you're looking for quality work and a smooth experience!"

Jaime S on April 2025

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Addition to existing structure building services FAQs

Building an in-law suite takes between two and seven months. Converting an existing basement, attic, or room can be done in about two months. Constructing a new addition or detached suite often takes four to five months for construction, plus one to two months for permits. The bigger the suite, the longer it will take. 

Yes, you can build an in-law suite in your backyard if you meet local building codes and zoning regulations. An in-law suite often occupies 300 to 800 square feet. Be sure to follow size restrictions, utility separations, and entrance requirements. Hiring a qualified contractor ensures you meet all regulatory requirements because they can pull permits, double-check local code, and gather other skilled pros to work on your suite. 

The 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.
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An in-law suite is a great solution for people who have family visiting often. Explore how much an in-law suite costs and prep to build yours.
A white wood ceiling
Apr 23, 2025
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Outdoor view of the modern house
Apr 22, 2025
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Explore how square footage, room type, home additions, and other common factors affect house renovation costs with our detailed cost guide.
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Apr 21, 2025
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Discover how much a log cabin costs to build, exploring how factors like its size, site prep, utilities, finishes, and labor rates affect the total price.
CONTRACTOR LOOKING OVER HOME DEVELOPMENT
Apr 19, 2025
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Budget for your general contractor’s hourly rate by considering factors such as project scope, fee structure, pricing model, and more.
stucco home with cracks from earthquake damage
Apr 16, 2025
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Work out the full cost to repair earthquake damage based on the type of damage, including foundation issues, utility lines, and cracked walls.
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