Get matched with top custom home builders in Islandia, NY
There are 15 highly-rated local custom home builders.
TRUSTED BY ISLANDIA, NY HOMEOWNERS
4.4 
27 Verified Reviews for Custom Home Building pros in Islandia, NY
*The Angi rating for Custom Home Building companies in Islandia, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Custom Home Building needs.
*The HomeAdvisor rating for Custom Home Building companies in Islandia, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Custom Home Building needs.
Last update on July 19, 2025
Custom home builders in Islandia
Good to Go Maintenance Inc has been in business for 45 years offering general construction, Repairs, and Renovation. We are insured, licensed and offer a detailed timeline with each project. We are also Roofing specialists (GAF certified roofing contractors) offering the "System Plus" lifetime material and labor warranty. (Free with every complete roof replacement).
Good to Go Maintenance Inc has been in business for 45 years offering general construction, Repairs, and Renovation. We are insured, licensed and offer a detailed timeline with each project. We are also Roofing specialists (GAF certified roofing contractors) offering the "System Plus" lifetime material and labor warranty. (Free with every complete roof replacement).
TOC ARCHITECTS offers a variety of architectural services to meet the varying needs of our clients. Whether you are looking to renovate an existing facility or looking to building something brand new, our architectural services can help make your structural dreams become reality. TOC ARCHITECTS architectural services include: Residential (new construction, additions, and alterations) Commercial (new construction, additions, and alterations) Restaurants Medical Facilities Educational Facilities Religious Establishments Space Planning For over 20 years, our firm has worked with each of our clients to create building spaces that reflect their needs and personality, and to ensure that their vision becomes reality. Let us help you design a home that is reflective of your own personal lifestyle, or a commercial building that expresses your business’ unique personality.
"TOC architects have been doing all my building projects for the past 24 years, I would not use anyone else"
Mike B on November 2023
TOC ARCHITECTS offers a variety of architectural services to meet the varying needs of our clients. Whether you are looking to renovate an existing facility or looking to building something brand new, our architectural services can help make your structural dreams become reality. TOC ARCHITECTS architectural services include: Residential (new construction, additions, and alterations) Commercial (new construction, additions, and alterations) Restaurants Medical Facilities Educational Facilities Religious Establishments Space Planning For over 20 years, our firm has worked with each of our clients to create building spaces that reflect their needs and personality, and to ensure that their vision becomes reality. Let us help you design a home that is reflective of your own personal lifestyle, or a commercial building that expresses your business’ unique personality.
"TOC architects have been doing all my building projects for the past 24 years, I would not use anyone else"
Mike B on November 2023
We specialize in all phases of remodeling for your home, business, bathrooms, kitchens, finishing basements, and more! 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! Check out all the services we offer below and call -or- click to schedule a free estimate today!
"Excellent - Provider made appointment to go over the work to be completed. He was prompt, courteous & his workers were neat & installed flooring to my satisfaction. He was involved with every step of the project. It was a pleasure working with this provider,"
Susan M on May 2025
We specialize in all phases of remodeling for your home, business, bathrooms, kitchens, finishing basements, and more! 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! Check out all the services we offer below and call -or- click to schedule a free estimate today!
"Excellent - Provider made appointment to go over the work to be completed. He was prompt, courteous & his workers were neat & installed flooring to my satisfaction. He was involved with every step of the project. It was a pleasure working with this provider,"
Susan M on May 2025
Please call my mobile phone for faster service: 516-449-8700!! Also, please provide a call back number in your inquiry. Northgate Home Services is a complete home services company which will handle all of your home improvement needs - inside and out. I will personally work with you to design and complete your home improvement project so that it meets all of your needs and expectations. Northgate Home Services is licensed and insured in both Suffolk and Nassau counties.
"I have had Jeff and his guys renovate my ranch house in Melville. He has done 2 bathrooms, my basement and my kitchen. He has always been reliable and done great work. The house looks like new. He quickly corrects any problems and is always in touch. He and his guys are friendly and neat. His estimates are reasonable. I strongly recommend Northgate Home Improvement."
Peter P on March 2025
Please call my mobile phone for faster service: 516-449-8700!! Also, please provide a call back number in your inquiry. Northgate Home Services is a complete home services company which will handle all of your home improvement needs - inside and out. I will personally work with you to design and complete your home improvement project so that it meets all of your needs and expectations. Northgate Home Services is licensed and insured in both Suffolk and Nassau counties.
"I have had Jeff and his guys renovate my ranch house in Melville. He has done 2 bathrooms, my basement and my kitchen. He has always been reliable and done great work. The house looks like new. He quickly corrects any problems and is always in touch. He and his guys are friendly and neat. His estimates are reasonable. I strongly recommend Northgate Home Improvement."
Peter P on March 2025
OZ General Contracting Co Inc. has an over 30 year extensive portfolio of incredible kitchen and bathroom renovations in Nassau and Suffolk County Long Island, NY. We are innovative, efficient, reliable, and we always exceed our client’s expectations.
"Remodeling, redesigning, restoring, reimagining, enlarging, expanding, interiors, exteriors, extensions, HVAC, electrical, architectural, residential, commercial, whatever your needs, OZ General Contracting Co., Inc. is the source. The resources of the OZ Team and its collaborators are unsurpassed and unmatched. The partnership, performance, efficiency and knowhow of its team leaves customers feeling comfortable, confident and at ease. I proudly make these statements based on personal experience. My family and I are OZ customers for over a decade. We can attest to the quality of work performed. OZ offers its customers a pallet of services: architectural, consultation, construction design and full project management. Moreover, the OZ Team is all inclusive: designers, electricians, plumbers, general contractor, project manager, kitchen and bath specialist, quality installation. The OZ showroom is extensive, digital renderings are specific to customer needs. The team members work in tandem to deliver quality and customer satisfaction. The team is customer-centric, communicative, and ensures adherence to the prescribed timeline. Work is done professionally and timely. More importantly, the relationship does not end upon completion of the project. The OZ Team is reliable, dependable, and responsive to customer needs – before, during and after the work is completed. OZ is indisputably the right choice!"
Gina S on August 2024
OZ General Contracting Co Inc. has an over 30 year extensive portfolio of incredible kitchen and bathroom renovations in Nassau and Suffolk County Long Island, NY. We are innovative, efficient, reliable, and we always exceed our client’s expectations.
"Remodeling, redesigning, restoring, reimagining, enlarging, expanding, interiors, exteriors, extensions, HVAC, electrical, architectural, residential, commercial, whatever your needs, OZ General Contracting Co., Inc. is the source. The resources of the OZ Team and its collaborators are unsurpassed and unmatched. The partnership, performance, efficiency and knowhow of its team leaves customers feeling comfortable, confident and at ease. I proudly make these statements based on personal experience. My family and I are OZ customers for over a decade. We can attest to the quality of work performed. OZ offers its customers a pallet of services: architectural, consultation, construction design and full project management. Moreover, the OZ Team is all inclusive: designers, electricians, plumbers, general contractor, project manager, kitchen and bath specialist, quality installation. The OZ showroom is extensive, digital renderings are specific to customer needs. The team members work in tandem to deliver quality and customer satisfaction. The team is customer-centric, communicative, and ensures adherence to the prescribed timeline. Work is done professionally and timely. More importantly, the relationship does not end upon completion of the project. The OZ Team is reliable, dependable, and responsive to customer needs – before, during and after the work is completed. OZ is indisputably the right choice!"
Gina S on August 2024
Provide affordable solutions for residential and commercial projects including new homes and remodeling projects. Generate permit and construction plans. Legalize existing structures. Assist with selecting contractors and provide construction management.
"Ralph listens, is down to earth and truly wonderful"
Garrett M on February 2023
Provide affordable solutions for residential and commercial projects including new homes and remodeling projects. Generate permit and construction plans. Legalize existing structures. Assist with selecting contractors and provide construction management.
"Ralph listens, is down to earth and truly wonderful"
Garrett M on February 2023
WELCOME! We are so glad you are here! At SMG Home Services we truly are a Full-Service Licensed & Insured Home Improvement Company. We take pride in transforming homes & spaces with top-quality craftsmanship & exceptional customer service. We specialize in everything from Water damage Restoration to Remodeling, Carpentry, Painting, & all handyman services. SMG Home Services will be there for every phase! Whether you need mold removal, minor repairs or a complete renovation, our experienced team is committed to delivering outstanding results tailored to your vision & budget, Guaranteed!
"They were a great choice! I will use them whenever I have new projects for my house. Gave us a quote which was reasonable. Did the work + on time, and the job came out great. Definitely a great company!"
ERIC F on March 2025
WELCOME! We are so glad you are here! At SMG Home Services we truly are a Full-Service Licensed & Insured Home Improvement Company. We take pride in transforming homes & spaces with top-quality craftsmanship & exceptional customer service. We specialize in everything from Water damage Restoration to Remodeling, Carpentry, Painting, & all handyman services. SMG Home Services will be there for every phase! Whether you need mold removal, minor repairs or a complete renovation, our experienced team is committed to delivering outstanding results tailored to your vision & budget, Guaranteed!
"They were a great choice! I will use them whenever I have new projects for my house. Gave us a quote which was reasonable. Did the work + on time, and the job came out great. Definitely a great company!"
ERIC F on March 2025
Owner owned & operated. Full service remodeling company specializing in medium to large projects. Serving Suffolk county and the Hamptons. High end building and remodeling firm. Expect excellent quality and customer service. Permit and Variance Specialists.
"We went over everything that was going to be done step by step both A.J. and Sam explained and guided us in the process. All came in at budget and in a timely manner. They were clean and reliable. I Will use them for my next project! ps. All of their recommendations for plumbing, electrical and painting were fantastic."
VINCENT S on March 2025
Owner owned & operated. Full service remodeling company specializing in medium to large projects. Serving Suffolk county and the Hamptons. High end building and remodeling firm. Expect excellent quality and customer service. Permit and Variance Specialists.
"We went over everything that was going to be done step by step both A.J. and Sam explained and guided us in the process. All came in at budget and in a timely manner. They were clean and reliable. I Will use them for my next project! ps. All of their recommendations for plumbing, electrical and painting were fantastic."
VINCENT S on March 2025
Expand your living space with our expert sunroom and patio enclosure remodeling services! We specialize in designing and transforming outdoor areas into beautiful, functional sunrooms and enclosed patios that you can enjoy year-round. Our skilled team delivers high-quality craftsmanship, using durable materials and personalized designs to enhance your home’s comfort and value. Whether you’re looking to create a cozy sunroom or a versatile patio enclosure, we’re committed to making your vision a reality. Contact us today for a free consultation and start planning your dream space!
"First meeting went very smoothly so far had a great experience with Jason Now will be working with Don the project manager."
Dee A on February 2025
Expand your living space with our expert sunroom and patio enclosure remodeling services! We specialize in designing and transforming outdoor areas into beautiful, functional sunrooms and enclosed patios that you can enjoy year-round. Our skilled team delivers high-quality craftsmanship, using durable materials and personalized designs to enhance your home’s comfort and value. Whether you’re looking to create a cozy sunroom or a versatile patio enclosure, we’re committed to making your vision a reality. Contact us today for a free consultation and start planning your dream space!
"First meeting went very smoothly so far had a great experience with Jason Now will be working with Don the project manager."
Dee A on February 2025
Your Way Contractors: Has the skilled professionals to do everything you need in-house from planning and design, construction, installation, and finishing of all details. Our creative and sophisticated thinking, combined with in-depth knowledge of city codes and building regulations are essential to designing to the maximum potential of your space and finishing the job in a timely manner.
"Gene and his crew did a great job on a difficult project. The house is over 100 years old and had been renovated several times in the past. Gene’s strength is to work collaboratively with his client to ensure the project meets the customer’s expectation. This project changed a couple of times based on what we found during demolition. Gene provided options and was always upfront about the cost of each option. We set out a schedule and the crew showed up on time for the day and on schedule for the week. I am very happy with the work."
Stephen B on July 2024
Your Way Contractors: Has the skilled professionals to do everything you need in-house from planning and design, construction, installation, and finishing of all details. Our creative and sophisticated thinking, combined with in-depth knowledge of city codes and building regulations are essential to designing to the maximum potential of your space and finishing the job in a timely manner.
"Gene and his crew did a great job on a difficult project. The house is over 100 years old and had been renovated several times in the past. Gene’s strength is to work collaboratively with his client to ensure the project meets the customer’s expectation. This project changed a couple of times based on what we found during demolition. Gene provided options and was always upfront about the cost of each option. We set out a schedule and the crew showed up on time for the day and on schedule for the week. I am very happy with the work."
Stephen B on July 2024
FAQs for custom home building projects in Islandia, NY
One starting point to find a local home builder is to collect suggestions from friends and neighbors. However, it’s still wise to do some more research before you hire a builder. Read reviews to supplement any word-of-mouth recommendations. Check sources like Angi that have standards and criteria in place to screen the pros it lists can also help you find more reputable local home builders.
Typically, it’s more affordable to buy an existing home than it is to build a new one. New construction loan interest rates tend to be higher than interest rates for traditional mortgages. Additionally, the cost of materials is likely higher when building a new home than it was when an existing home was built (unless it’s a very new one). You’re also paying for all new appliances, finishes, permits, inspections, and connections for water, gas, and electricity.
The average price per square foot to build a house is about $150 per square foot. Overall, the cost to build a house ranges anywhere from $100 to $500 per square foot, depending on where you build. The primary cost factors include location, size, and style of house you build.
The average cost to hire an architect for your home project ranges between $2,200 and $10,500. However, depending on location and project type, you might end up paying as little as $600 or as much as $45,000 or more. For example, the average cost of hiring an architect in North Carolina is between $1,800 and $2,000, but in California, that price tag jumps to $3,600 to $15,200.
The price you pay for your architect also depends on their experience level. For example, a principal architect, the firm's owner, typically charges $150 to $250 per hour. However, an intern architect with three to five years of experience usually only charges $45 per hour.
Knowing if you need an architect for your project can be tricky, especially if you've never worked with one before. In general, small remodeling projects like replacing fixtures typically don't require the expertise of an architect. However, larger projects, like moving walls or adding an addition to your home, should include an architect to ensure the project is structurally sound.
- Hauppauge
- Central Islip
- Smithtown
- Ronkonkoma
- Nesconset
- Brentwood
- Lake Ronkonkoma
- Long Island
- Islip Terrace
- Commack
- Lake Grove
- Bohemia
- Saint James
- Islip
- Kings Park
- East Islip
- Oakdale
- Great River
- Holbrook
- South Setauket
- Centereach
- East Northport
- West Sayville
- Brightwaters
- Sayville
- Stony Brook
- Deer Park
- Holtsville
- Farmingville
- North Babylon
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