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Second story addition builders in Cold Spring Harbor

Master Remodelers
Covering Suffolk County
5.00(
7
)
Approved Pro
Master Remodelers
Covering Suffolk County
5.00(
7
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
681 local quotes requested

We pride ourselves on the quality work we provide, while delivering great customer service. Check out our services offered and call or click to schedule an estimate today!

"Master remodelers did a fantastic job without any complications. Joe and the team were very professional and efficient. My kitchen looks beautiful. Highly Recommend!"

Kathleen M on May 2025

We pride ourselves on the quality work we provide, while delivering great customer service. Check out our services offered and call or click to schedule an estimate today!

"Master remodelers did a fantastic job without any complications. Joe and the team were very professional and efficient. My kitchen looks beautiful. Highly Recommend!"

Kathleen M on May 2025


Giuliano's Landscaping & Design Corp.
116 Lake Avenue
4.88(
8
)
Approved Pro
Giuliano's Landscaping & Design Corp.
116 Lake Avenue
4.88(
8
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
290 local quotes requested

We are your local landscape professionals and we are proud to offer innovative outdoor design services, quality installation, and ongoing lawn and garden care. Give us a call today for a personalized and complimentary consultation.

"I never write reviews but Charles and his guys did such a great job on my backyard clearing, driveway and walk that I had to do it. From start to finish the job was done professionally and they delivered on every promise. I highly recommend Giulianos for any work you may meed done."

Robert G on August 2023

We are your local landscape professionals and we are proud to offer innovative outdoor design services, quality installation, and ongoing lawn and garden care. Give us a call today for a personalized and complimentary consultation.

"I never write reviews but Charles and his guys did such a great job on my backyard clearing, driveway and walk that I had to do it. From start to finish the job was done professionally and they delivered on every promise. I highly recommend Giulianos for any work you may meed done."

Robert G on August 2023


Avatar for Interior Source
Interior Source
Located In East Meadow
4.89(
44
)
Approved Pro
Interior Source
Located In East Meadow
4.89(
44
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
528 local quotes requested

Interior Source, Inc. is a family owned 5 Stars renovation company, reliable & trustworthy renovation company in Long Island. With over 20 years of experience in Kitchen, Bathroom, Basement & all interior renovation in Long Island, Interior Source offers exceptional home free consultation helping homeowners to implement their ideas into design reality. Interior Source is also proud to won 2 consecutive Angies Super Service awards 2022 & 2023 which stamped us as best renovation company in Long Island. We specialize in beautiful customized bathrooms & kitchens at an avoidable price. If you're looking for a company that provides unparalleled quality, outstanding service, and beautiful outcomes, then look no further than Interior Source. We work closely with each client to understand their unique needs and preferences, and our commitment to customer satisfaction means we won't rest until you are 100% happy with our work.

"Professional, Affordable, Excellent Work! We love our new kitchen and bathroom! From the beginning Mohammad Sayed stood out from the other contractors because he was professional, affordable and knowledgeable…even giving us sound advice before we hired him. His team did excellent work and were incredibly responsive, keeping us informed every step of the way. Mohammad always addressed our concerns promptly. He allowed us to lead the process by choosing what we wanted and how we wanted it. Mohammad and his team were professional, reliable, and made the entire process smooth and stress-free.
The communication was excellent, and we appreciated how Mohammad listened to our needs and incorporated them into the design. We wholeheartedly recommend this contractor."

Christopher O on June 2025

Interior Source, Inc. is a family owned 5 Stars renovation company, reliable & trustworthy renovation company in Long Island. With over 20 years of experience in Kitchen, Bathroom, Basement & all interior renovation in Long Island, Interior Source offers exceptional home free consultation helping homeowners to implement their ideas into design reality. Interior Source is also proud to won 2 consecutive Angies Super Service awards 2022 & 2023 which stamped us as best renovation company in Long Island. We specialize in beautiful customized bathrooms & kitchens at an avoidable price. If you're looking for a company that provides unparalleled quality, outstanding service, and beautiful outcomes, then look no further than Interior Source. We work closely with each client to understand their unique needs and preferences, and our commitment to customer satisfaction means we won't rest until you are 100% happy with our work.

"Professional, Affordable, Excellent Work! We love our new kitchen and bathroom! From the beginning Mohammad Sayed stood out from the other contractors because he was professional, affordable and knowledgeable…even giving us sound advice before we hired him. His team did excellent work and were incredibly responsive, keeping us informed every step of the way. Mohammad always addressed our concerns promptly. He allowed us to lead the process by choosing what we wanted and how we wanted it. Mohammad and his team were professional, reliable, and made the entire process smooth and stress-free.
The communication was excellent, and we appreciated how Mohammad listened to our needs and incorporated them into the design. We wholeheartedly recommend this contractor."

Christopher O on June 2025


Avatar for AR Home Construction
AR Home Construction
25 Berry Hill Rd
5.00(
29
)
Approved Pro
AR Home Construction
25 Berry Hill Rd
5.00(
29
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
652 local quotes requested

A.R. Home Construction is a premier design and build construction company specializing in luxury new home construction and high-end remodeling projects. With expertise in all aspects of construction, from conceptual design to final touches, A.R. Home Construction delivers exquisite and luxurious transformations. Our team of skilled professionals is dedicated to exceeding client expectations and creating stunning spaces that reflect unparalleled craftsmanship. Explore luxury and sophistication at our home design showroom, offering a curated selection of top -quality products for your project.

"After purchasing our first home, we worked with Tommy to do a full remodel. His design ideas allowed us to create our dream home. Tommy and his team were professional, courteous, and always met their deadlines. In total, we did a remodel of our kitchen, living room, dining room, great room, 3 bathrooms, master bedroom, a walk in closet, brand new siding/gutters, a new heating & plumbing system, and a lot of interior work. Our friends are in awe of the work that Tommy and his team did at our house. Tommy took his time to get to know us, design exactly what we wanted, and saw the project through from start to finish. We are already speaking with Tommy on other projects for our home. His professionalism outweighed any other contractor that we interviewed, it was a pleasure to work with Tommy and I have recommended him to all of my friends and family."

Billy C on July 2021

A.R. Home Construction is a premier design and build construction company specializing in luxury new home construction and high-end remodeling projects. With expertise in all aspects of construction, from conceptual design to final touches, A.R. Home Construction delivers exquisite and luxurious transformations. Our team of skilled professionals is dedicated to exceeding client expectations and creating stunning spaces that reflect unparalleled craftsmanship. Explore luxury and sophistication at our home design showroom, offering a curated selection of top -quality products for your project.

"After purchasing our first home, we worked with Tommy to do a full remodel. His design ideas allowed us to create our dream home. Tommy and his team were professional, courteous, and always met their deadlines. In total, we did a remodel of our kitchen, living room, dining room, great room, 3 bathrooms, master bedroom, a walk in closet, brand new siding/gutters, a new heating & plumbing system, and a lot of interior work. Our friends are in awe of the work that Tommy and his team did at our house. Tommy took his time to get to know us, design exactly what we wanted, and saw the project through from start to finish. We are already speaking with Tommy on other projects for our home. His professionalism outweighed any other contractor that we interviewed, it was a pleasure to work with Tommy and I have recommended him to all of my friends and family."

Billy C on July 2021


Top Gun Kitchen & Cabinets
110 Brook Ave C
5.00(
13
)
Approved Pro
Top Gun Kitchen & Cabinets
110 Brook Ave C
5.00(
13
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
677 local quotes requested

Full service Kitchen Remodeling company. Specializing in cabinet painting and kitchen face lifts with over 25 years experience. Free consultations. ZERO pressure sales. Let us save you thousands. Call today.

"Fast clean and good work"

edward c on June 2025

Full service Kitchen Remodeling company. Specializing in cabinet painting and kitchen face lifts with over 25 years experience. Free consultations. ZERO pressure sales. Let us save you thousands. Call today.

"Fast clean and good work"

edward c on June 2025


Sunview Enterprise Inc
New on HomeAdvisorNew on Angi
Approved Pro
Sunview Enterprise Inc
New on AngiNew on HomeAdvisor
Approved Pro
222 local quotes requested

Our team has quality experience in this industry, and we make sure our customers are happy before we leave. Call or click to schedule an estimate today!

Our team has quality experience in this industry, and we make sure our customers are happy before we leave. Call or click to schedule an estimate today!


Avatar for Islandwide Contracting
Islandwide Contracting
23 Union Avenue
5.00(
3
)
Approved Pro
Islandwide Contracting
23 Union Avenue
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
536 local quotes requested

​At Islandwide Contracting LLC, we have been proudly serving Suffolk County and surrounding areas since 2019, bringing over 30 years of combined experience to every project. Our comprehensive range of residential and commercial construction services includes interior and exterior work, such as medical offices, restaurants, urgent care facilities, dormers, and extensions. We specialize in bathroom and kitchen renovations, as well as basement transformations. Contact us today for a free estimate at 631-779-9277, and let us help you build the dream you envision. ​**At Islandwide Contracting, we deeply appreciate the dedication and sacrifices of our military personnel, first responders, and senior citizens. As a token of our gratitude, we are proud to offer special discounts tailored specifically for these esteemed groups. Please inquire about these exclusive offers when you contact us, and let us assist you in bringing your vision to life.**

"Excellent. Workers were neat respectful and I was very happy with the results I will be using the company again for any work needed in my home."

Cathy V on June 2025

​At Islandwide Contracting LLC, we have been proudly serving Suffolk County and surrounding areas since 2019, bringing over 30 years of combined experience to every project. Our comprehensive range of residential and commercial construction services includes interior and exterior work, such as medical offices, restaurants, urgent care facilities, dormers, and extensions. We specialize in bathroom and kitchen renovations, as well as basement transformations. Contact us today for a free estimate at 631-779-9277, and let us help you build the dream you envision. ​**At Islandwide Contracting, we deeply appreciate the dedication and sacrifices of our military personnel, first responders, and senior citizens. As a token of our gratitude, we are proud to offer special discounts tailored specifically for these esteemed groups. Please inquire about these exclusive offers when you contact us, and let us assist you in bringing your vision to life.**

"Excellent. Workers were neat respectful and I was very happy with the results I will be using the company again for any work needed in my home."

Cathy V on June 2025


Avatar for Classic Remodeling Group Inc
Classic Remodeling Group Inc
1839 Bellmore Ave
4.80(
44
)
Approved Pro
Classic Remodeling Group Inc
1839 Bellmore Ave
4.80(
44
)
Approved Pro
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
2345 local quotes requested

Full service remodeling, roofing and siding contractors serving Long Island. Whether you are in need of new roof installation, roof restoration, or roof repairs; new siding installation, siding repairs; new windows & doors installation; kitchen remodeling; bathroom remodeling; we are the Long Island home remodeling contractors to call, due to our professionalism and affordability.

"John and his team did an excellent job tiling my bathroom. I am very detail oriented and was extremely happy with the precision and quality of his work. I would certainly hire him again and strongly recommend him."

Allan S on June 2025

Full service remodeling, roofing and siding contractors serving Long Island. Whether you are in need of new roof installation, roof restoration, or roof repairs; new siding installation, siding repairs; new windows & doors installation; kitchen remodeling; bathroom remodeling; we are the Long Island home remodeling contractors to call, due to our professionalism and affordability.

"John and his team did an excellent job tiling my bathroom. I am very detail oriented and was extremely happy with the precision and quality of his work. I would certainly hire him again and strongly recommend him."

Allan S on June 2025


Avatar for JBL HOME IMPROVEMENTS INC
JBL HOME IMPROVEMENTS INC
PO BOX 584
4.67(
255
)
Approved Pro
JBL HOME IMPROVEMENTS INC
PO BOX 584
4.67(
255
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
2029 local quotes requested

JBL Home Improvements, Inc, located in St. James, is a family owned and operated remodeling business specializing in residential projects. Owner & Contractor David Kaplan, General Manager Jill Kaplan, along with their team of talented professionals, are dedicated to providing outstanding workmanship and customer service to homeowners who live in their community.

"JBL Home Improvements is a great company to work with. Dave and Jill are friendly, helpful, reliable and punctual! When they stay they will start, the do. They are there early each day and keep things as tidy as possible. For our recent job they finished just 1 day past the expected time-frame. Considering the many stories you probably have heard - the timing was spot on! They have great resources and talented workers who did an excellent job installing new floors and a new set of stairs, as well as new doors, sheet rock and molding! Highly recommend using JBL Home Improvements!"

Jeff G on March 2025

JBL Home Improvements, Inc, located in St. James, is a family owned and operated remodeling business specializing in residential projects. Owner & Contractor David Kaplan, General Manager Jill Kaplan, along with their team of talented professionals, are dedicated to providing outstanding workmanship and customer service to homeowners who live in their community.

"JBL Home Improvements is a great company to work with. Dave and Jill are friendly, helpful, reliable and punctual! When they stay they will start, the do. They are there early each day and keep things as tidy as possible. For our recent job they finished just 1 day past the expected time-frame. Considering the many stories you probably have heard - the timing was spot on! They have great resources and talented workers who did an excellent job installing new floors and a new set of stairs, as well as new doors, sheet rock and molding! Highly recommend using JBL Home Improvements!"

Jeff G on March 2025


Avatar for Kitchen & Bath Works INC
Kitchen & Bath Works INC
1551 LIincoln Ave
5.00(
101
)
Approved Pro
Kitchen & Bath Works INC
1551 LIincoln Ave
5.00(
101
)
Approved Pro
Customers say: Quick response
Recommended by 99% of Angi customers
Recommended by 99% of HomeAdvisor customers
509 local quotes requested

Kitchen and Bath Works Inc has been owner operated and successfully in business since 1994. Offering a consultative approach and delivering on quality, custom work, our business has been overwhelmingly driven by word of mouth referrals. From start to finish, we stand by our work and our owner is committed to being present on all jobs.

"Lou renovated my kitchen last year and I was completely satisfied. I called him back this summer to gut and remodel my bathroom. He was extremely considerate, and he treated my house as if it were his own. My house is small, and I only have one bathroom. The project took nine days. I was anticipating that there would be a big mess and a huge inconvenience. But even the demo was done very neatly and efficiently. Lou even took the time to re-connect the toilet each night so that I wouldn't be left without. Lou did an amazing job, and it was a pleasure working with him. Once again, I am pleased to recommend Lou for your kitchen or bath project."

Janet M on November 2023

Kitchen and Bath Works Inc has been owner operated and successfully in business since 1994. Offering a consultative approach and delivering on quality, custom work, our business has been overwhelmingly driven by word of mouth referrals. From start to finish, we stand by our work and our owner is committed to being present on all jobs.

"Lou renovated my kitchen last year and I was completely satisfied. I called him back this summer to gut and remodel my bathroom. He was extremely considerate, and he treated my house as if it were his own. My house is small, and I only have one bathroom. The project took nine days. I was anticipating that there would be a big mess and a huge inconvenience. But even the demo was done very neatly and efficiently. Lou even took the time to re-connect the toilet each night so that I wouldn't be left without. Lou did an amazing job, and it was a pleasure working with him. Once again, I am pleased to recommend Lou for your kitchen or bath project."

Janet M on November 2023

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FAQs for second story addition building service projects in Cold Spring Harbor, NY

Converting a vaulted ceiling into a second floor requires three to six months from planning to completion. The process begins with several weeks of design and engineering, followed by permit applications, which vary in processing time by location. 

Construction itself spans several months, including framing, systems installation, and finishing work. Weather conditions, contractor availability, and inspection schedules can all influence your project timeline.

Several factors could make your conversion challenging or impossible. Inadequate roof support structures, insufficient foundation capacity, or problematic truss configurations might require prohibitively expensive modifications. 

Some homes lack the minimum ceiling height (12 feet at the lowest point) needed for functional second-floor spaces. Building code restrictions in your area might also limit conversion possibilities, particularly in historic districts or homes with specific architectural designations.

Begin with professional assessments from both an architect and a structural engineer who will evaluate your home's specific characteristics. They'll examine existing framing, measure available headroom, assess load-bearing capacity, and identify potential obstacles like HVAC ducts or plumbing vents. 

These experts will also review local building codes to determine feasibility. Their preliminary analysis provides crucial information about structural requirements and potential limitations before you commit to the project.

Whether you'll need temporary housing depends on several factors, including the project's scope and your tolerance for construction disruption. Major structural work creates significant noise, dust, and potential utility interruptions that many families find challenging to live with. Safety concerns may also arise during certain construction phases. 

Some homeowners successfully remain by isolating the construction zone and establishing clear work schedules. Discuss living arrangements with your contractor early in the planning process to make informed decisions.

The Cold Spring Harbor, NY homeowners’ guide to second story addition building services
From average costs to expert advice, get all the answers you need to get your job done.
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