Get matched with top major home repair pros (general contractors) in your area
Enter your zip and get matched with up to 3 pros
Matching on HomeAdvisor
Major home repair pros (general contractors) in Holtsville
Were 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 Home Improvement services that are customizable to each individual project. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!
"I hired DCS to renovate a house for my mother. They had to re-frame walls, move doorways, gut reno 2 bathrooms and the kitchen. They finished the drywall, installed the new tile and cabinets, replaced flooring, and installed a new tile fireplace surround and built a custom wood mantle. Great carpenters. Dick Strine, the principal, is so knowledgeable and thorough. If he can figure out where a problem is coming from in your house, no one can. Great customer service. They have also worked for my in-laws, including building one very large house and renovating another."
Jacqueline P on January 2024
Were 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 Home Improvement services that are customizable to each individual project. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!
"I hired DCS to renovate a house for my mother. They had to re-frame walls, move doorways, gut reno 2 bathrooms and the kitchen. They finished the drywall, installed the new tile and cabinets, replaced flooring, and installed a new tile fireplace surround and built a custom wood mantle. Great carpenters. Dick Strine, the principal, is so knowledgeable and thorough. If he can figure out where a problem is coming from in your house, no one can. Great customer service. They have also worked for my in-laws, including building one very large house and renovating another."
Jacqueline P on January 2024
We are 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. We are watchful of our customer's interests and make their concerns the basis of our business. Give us a call for a quote today!
"Friendly, low price, and best of all the painter, Francisco, is a REAL professional who’s not about doing a slipshod job and leaving. He took as many days as he needed at a flat rate and ensured the job was top quality."
Alexander M on October 2021
We are 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. We are watchful of our customer's interests and make their concerns the basis of our business. Give us a call for a quote today!
"Friendly, low price, and best of all the painter, Francisco, is a REAL professional who’s not about doing a slipshod job and leaving. He took as many days as he needed at a flat rate and ensured the job was top quality."
Alexander M on October 2021
We are 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.
"Shane and his crew were fantastic. From our first meeting through completion the renovation was seamless. Great attention to detail, neat, clean and respectful of my house. Finished on time and on budget. Highly recommended."
Mark K on February 2024
We are 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.
"Shane and his crew were fantastic. From our first meeting through completion the renovation was seamless. Great attention to detail, neat, clean and respectful of my house. Finished on time and on budget. Highly recommended."
Mark K on February 2024
The linkedin site will tell our Story. Clients will take advantage of Granville's in house Design capabilities with CAD. see granvillevictorians.com for examples of our work
"Granville House Victorians L.L.C. is extremely skilled and professional. My Victorian style house came out better than I could have dreamed. Granville took care of everything and they are extremely knowledgeable in what they do."
Jonathan P on January 2023
The linkedin site will tell our Story. Clients will take advantage of Granville's in house Design capabilities with CAD. see granvillevictorians.com for examples of our work
"Granville House Victorians L.L.C. is extremely skilled and professional. My Victorian style house came out better than I could have dreamed. Granville took care of everything and they are extremely knowledgeable in what they do."
Jonathan P on January 2023
MIDCO is a design and build corporation that specializes in high end interior and exterior finishes in the New York Metro area. We produce top quality results with customer service being our number one priority. We manage and complete project types ranging from residential and commercial renovations and remodels to new construction and full custom builds.
"Marcel and his are great they were hired by mom unfortunately she passed away and I took over the coordination their work was great very professional very efficient l I would highly recommended and everyone who has come by the house to see was astonished of the workshop a d quality now I have a great new first floor kitchen and bathroom my mom would have been amazed about the transformation of her apartment. So if you need any renovation don't hesitate to co tact marcel and his crew."
Srodin L on May 2024
MIDCO is a design and build corporation that specializes in high end interior and exterior finishes in the New York Metro area. We produce top quality results with customer service being our number one priority. We manage and complete project types ranging from residential and commercial renovations and remodels to new construction and full custom builds.
"Marcel and his are great they were hired by mom unfortunately she passed away and I took over the coordination their work was great very professional very efficient l I would highly recommended and everyone who has come by the house to see was astonished of the workshop a d quality now I have a great new first floor kitchen and bathroom my mom would have been amazed about the transformation of her apartment. So if you need any renovation don't hesitate to co tact marcel and his crew."
Srodin L on May 2024
At Refined Renovators & Design, we specialize in transforming spaces with our design expertise for kitchens, bathrooms, and all aspects of residential construction. Our team is highly skilled and experienced in using design programs such as 2020 Design and AutoCAD to bring your vision to life.
"The experience was excellent ."
Maureen K on June 2025
At Refined Renovators & Design, we specialize in transforming spaces with our design expertise for kitchens, bathrooms, and all aspects of residential construction. Our team is highly skilled and experienced in using design programs such as 2020 Design and AutoCAD to bring your vision to life.
"The experience was excellent ."
Maureen K on June 2025
Welcome to Chelsea Home Remodeling, Inc. A family owned and operated business since 1985, having 30 years of diverse experience, dedicated solely to residential home remodeling. The company was incorporated in 1986 by Dominick and Cynthia Mupo and sons, Michael and Louis. The philosophy of professional service combined with quality craftsmanship has proven to be the catalyst for our success. A key ingredient in the success of the projects undertaken is employment of a staff of diversified professionals. Almost all the construction activities are performed and coordinated by our full time staff. The company's original area of specialization, Custom Baths and Kitchens, have expanded over the years to include medium to large home renovations. An extended portfolio is available with qualified referrals upon request. Must have your own plans available for work to be completed.
"I was referred to Chelsea Home Remodeling by the owner of Marcor Roofing who previously did an excellent job on my roofing project. I was looking for a reliable contracting company to do a major interior renovation project including a full gut out demolition and rebuild of an existing extension that I knew required extensive corrections and repair. Chelsea is a family owned and operated business and they were exceptional right from the start. Dominick Mupo and his son Louis came to perform the initial inspection and to discuss my project. Dominick provided a very detailed estimate in writing, which he reviewed with me line by line in person with full transparency. They may not be the least expensive but I got what I paid for; they did a superior job from big to fine details from start to finish. Working with Dominick, Louis, Michael, Manny and Carlos was an absolute pleasure. They kept to the timeline, showed up as planned and on time, were pleasant and cooperative, cleaned up at the end of each and every day, respectfully cared for my home and property and were ever patient with my many questions and concerns every step of the way. They were consistently open to discussion regarding the problems found from the original construction, and with my participation in the process. They made the whole project as stress free as possible and consistently went above and beyond. I never doubted that my home and project was as important to them as their own homes would be. Their expertise with problem solving, knowledge of code and the correct way to do things, with acute attention to detail, was exceptional. Their referrals for floor refinishing and painting were also excellent. I am beyond pleased with the final results and could not have asked for a better contracting company. I will be using them for all my planned home remodeling projects and highly recommend them without reservation."
Susan M on February 2020
Welcome to Chelsea Home Remodeling, Inc. A family owned and operated business since 1985, having 30 years of diverse experience, dedicated solely to residential home remodeling. The company was incorporated in 1986 by Dominick and Cynthia Mupo and sons, Michael and Louis. The philosophy of professional service combined with quality craftsmanship has proven to be the catalyst for our success. A key ingredient in the success of the projects undertaken is employment of a staff of diversified professionals. Almost all the construction activities are performed and coordinated by our full time staff. The company's original area of specialization, Custom Baths and Kitchens, have expanded over the years to include medium to large home renovations. An extended portfolio is available with qualified referrals upon request. Must have your own plans available for work to be completed.
"I was referred to Chelsea Home Remodeling by the owner of Marcor Roofing who previously did an excellent job on my roofing project. I was looking for a reliable contracting company to do a major interior renovation project including a full gut out demolition and rebuild of an existing extension that I knew required extensive corrections and repair. Chelsea is a family owned and operated business and they were exceptional right from the start. Dominick Mupo and his son Louis came to perform the initial inspection and to discuss my project. Dominick provided a very detailed estimate in writing, which he reviewed with me line by line in person with full transparency. They may not be the least expensive but I got what I paid for; they did a superior job from big to fine details from start to finish. Working with Dominick, Louis, Michael, Manny and Carlos was an absolute pleasure. They kept to the timeline, showed up as planned and on time, were pleasant and cooperative, cleaned up at the end of each and every day, respectfully cared for my home and property and were ever patient with my many questions and concerns every step of the way. They were consistently open to discussion regarding the problems found from the original construction, and with my participation in the process. They made the whole project as stress free as possible and consistently went above and beyond. I never doubted that my home and project was as important to them as their own homes would be. Their expertise with problem solving, knowledge of code and the correct way to do things, with acute attention to detail, was exceptional. Their referrals for floor refinishing and painting were also excellent. I am beyond pleased with the final results and could not have asked for a better contracting company. I will be using them for all my planned home remodeling projects and highly recommend them without reservation."
Susan M on February 2020
We are 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.
"Top of the line workmanship! They were courteous and professional. I couldn?t be happier with the outcome. I Highly recommend this company and will be hiring them again. "
Donna B on February 2025
We are 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.
"Top of the line workmanship! They were courteous and professional. I couldn?t be happier with the outcome. I Highly recommend this company and will be hiring them again. "
Donna B on February 2025
For over 20 years, Shawn Piazza, the owner of East End Designs, LLC has been providing top quality renovations to the East End and throughout Suffolk County. The team at East End Designs has the capability and knowledge to bring your dream project from an idea to completion. Please call 631-565-1117 or email leanna@eastenddesigns.net to book your free consultation today.
"Incredible work ethic, quality. Had many innovative solutions, delivered on time and exceeded expectations. Project came in on time, on budget. Made was could have been a complicated project a great experience. "
D R on April 2025
For over 20 years, Shawn Piazza, the owner of East End Designs, LLC has been providing top quality renovations to the East End and throughout Suffolk County. The team at East End Designs has the capability and knowledge to bring your dream project from an idea to completion. Please call 631-565-1117 or email leanna@eastenddesigns.net to book your free consultation today.
"Incredible work ethic, quality. Had many innovative solutions, delivered on time and exceeded expectations. Project came in on time, on budget. Made was could have been a complicated project a great experience. "
D R on April 2025
Sage Builders Syndicate, Inc. 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
"Detail oriented contractor with fair pricing. Very responsive and completed all work on time. Will absolutely be using them again!"
Victor T on October 2024
Sage Builders Syndicate, Inc. 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
"Detail oriented contractor with fair pricing. Very responsive and completed all work on time. Will absolutely be using them again!"
Victor T on October 2024
FAQs for major home repair (general contractor) projects in Holtsville, NY
You should replace floor joists as soon as you see clear signs of structural trouble—sagging floors, wide wall cracks, uneven door frames, wet or rotting wood, persistent squeaks, or windows that no longer latch. Tilted or sinking supports in the crawl space are another red flag. If you notice any of these signs, call a pro right away to keep your home’s structure safe.
If the joists are exposed from below, a pro can swap them out without touching the finished floor above. In an unfinished basement or crawl space, you’ll often see the joists and can easily reach them. When insulation, subflooring, or finished flooring blocks access, the crew must remove these materials before repairs can begin.
Sistering allows a pro to reinforce a cracked or undersized joist without tearing up the entire floor. The contractor slowly raises the frame, then fastens a new joist snugly against the damaged one to share the load. When done correctly, sistering restores full structural strength and keeps the floor level without the cost of a complete replacement.
Floor joists installed correctly in a stable environment can last for 100 years or more, often outlasting the house itself. However, termite damage, moisture, leaks, and other problems can significantly reduce a floor's lifespan. For instance, if the floor is exposed to consistent moisture, you'll likely need to replace the joists every 20 to 30 years.
Homeowners' insurance covers floor joist damage resulting from sudden and accidental events, such as fire, windstorm, or water damage from a burst pipe. It will not cover repairs resulting from gradual deterioration, poor maintenance, or termite infestations. Review your insurance policy and consult your provider to verify the conditions that guarantee full coverage. Doing so ensures you are fully aware of your responsibilities and can plan your repair work with complete confidence.
Floor joists are essential structural components that provide a stable foundation for your home. They directly transfer the weight of floors, furniture, and occupants to the foundation, ensuring stability and a safe living environment. Without these robust beams, the structure would face compromised load distribution, leading to potential safety hazards and costly repairs. Proper installation and maintenance are crucial for long-term durability and safety.
- Birmingham
- Phoenix
- Tucson
- Fresno
- Long Beach
- Los Angeles
- Modesto
- Sacramento
- San Diego
- San Francisco
- San Jose
- Denver
- Hartford
- Washington DC
- Fort Lauderdale
- Jacksonville
- Miami
- Orlando
- Tampa
- Atlanta
- Chicago
- Indianapolis
- Louisville
- New Orleans
- Baltimore
- Boston
- Detroit
- Grand Rapids
- Minneapolis
- Saint Paul
- Kansas City
- Saint Louis
- Las Vegas
- Albany
- New York
- Asheville
- Charlotte
- Greensboro
- Raleigh
- Winston Salem
- Cincinnati
- Cleveland
- Columbus
- Oklahoma City
- Portland
- Harrisburg
- Philadelphia
- Pittsburgh
- Providence
- Memphis
- Nashville
- Austin
- Dallas
- El Paso
- Fort Worth
- Houston
- San Antonio
- Salt Lake City
- Norfolk
- Richmond
- Virginia Beach
- Seattle
- Madison
- Milwaukee
Get our Angi-powered app
