
Get matched with top custom home builders in Islandia, NY
There are 10 highly-rated local custom home builders.
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*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 December 10, 2025
Find Custom home builders in Islandia

Sentri Homes
Sentri Homes
Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.
Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.
Christopher Albert Eng
Christopher Albert Eng
We take great pride in our experience, expertise, quality and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.
"Very professional and easy to work with. Would definitely hire again. "
George E on June 2025
We take great pride in our experience, expertise, quality and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.
"Very professional and easy to work with. Would definitely hire again. "
George E on June 2025
JAFPC Architect
JAFPC Architect
John Anthony Ferraro P.C, Architect is a diverse practice with experience in schools, religious buildings, residential, municipal and commercial. It is my philosophy that Architecture is sculpted by Client needs. This thought process orchestrates a unique Client/Architect relationship from preliminary design through construction documentation. Licensed and insured in nine states, my practice offers comprehensive expedient service. I dedicate myself to providing professional and creative design in harmony with local and state requirements. As a member of the American Institute of Architects and nationally certified by the National Council Architectural Board, I mandate all documentation is executed with the highest professional and ethical standards. This assures each client excellence in the practice of Architecture. I trust you will find my qualifications satisfactory.
"Very helpful and professional.."
Greg N on January 2011
John Anthony Ferraro P.C, Architect is a diverse practice with experience in schools, religious buildings, residential, municipal and commercial. It is my philosophy that Architecture is sculpted by Client needs. This thought process orchestrates a unique Client/Architect relationship from preliminary design through construction documentation. Licensed and insured in nine states, my practice offers comprehensive expedient service. I dedicate myself to providing professional and creative design in harmony with local and state requirements. As a member of the American Institute of Architects and nationally certified by the National Council Architectural Board, I mandate all documentation is executed with the highest professional and ethical standards. This assures each client excellence in the practice of Architecture. I trust you will find my qualifications satisfactory.
"Very helpful and professional.."
Greg N on January 2011

Tiderunner Engineering & Design PC
Tiderunner Engineering & Design PC
I provide residential structural engineering services to both homeowners and home improvement contractors. These services include plan preparation, design of structural members, structural evaluations of existing buildings, review of plans prepared by others, design of sanitary systems and on site drainage systems if necessary. All work is done by me, a registered professional engineer in New York, and I also conduct inspections and evaluations.
"Was Awful. Measurment's were off. Plans were incomplete. After he measured the rooms, we had to remeasure the rooms ourselves and send them to him. I then had to go to his house to pick up the plans. I submitted the plans at which time I was told that I needed to get then done again by a professional. Held up the construction by several weeks. Save your money. Do not use Lou."
Patrick V on April 2025
I provide residential structural engineering services to both homeowners and home improvement contractors. These services include plan preparation, design of structural members, structural evaluations of existing buildings, review of plans prepared by others, design of sanitary systems and on site drainage systems if necessary. All work is done by me, a registered professional engineer in New York, and I also conduct inspections and evaluations.
"Was Awful. Measurment's were off. Plans were incomplete. After he measured the rooms, we had to remeasure the rooms ourselves and send them to him. I then had to go to his house to pick up the plans. I submitted the plans at which time I was told that I needed to get then done again by a professional. Held up the construction by several weeks. Save your money. Do not use Lou."
Patrick V on April 2025

Cocos Custom Building LLC
Cocos Custom Building LLC
Coco’s Custom Building LLC specializes in setting and finishing Modular Homes, fabricating and installing structural steel, and all phases of residential and commercial construction. This includes extensions, dormers, basements, siding, exterior trim and roofing. We have 25 years of experience. We take pride in giving our customers a professional quality finish on all of our projects for a reasonable price. We work extremely hard to ensure that our customers hard earned money doesn’t go to waste.
"Excellent. On time and on budget"
Brian D on January 2025
Coco’s Custom Building LLC specializes in setting and finishing Modular Homes, fabricating and installing structural steel, and all phases of residential and commercial construction. This includes extensions, dormers, basements, siding, exterior trim and roofing. We have 25 years of experience. We take pride in giving our customers a professional quality finish on all of our projects for a reasonable price. We work extremely hard to ensure that our customers hard earned money doesn’t go to waste.
"Excellent. On time and on budget"
Brian D on January 2025
Matthew Busch Architect
Matthew Busch Architect
Matthew Busch Architect 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.
Matthew Busch Architect 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.

Todd O'Connell Architect PC
Todd O'Connell Architect PC
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

James Phillip Golden Architect
James Phillip Golden Architect
High end architect specializing in making a house feel like home! I make people’s dream homes a reality. There is nothing more satisfying to me then improving the quality of life for my clients and giving them a house that they are able to make into their homes. I have been a licensed architect since 2015 and am currently registered in Rhode Island, Connecticut, New York, Maine and Massachusetts. With my NCARB certificate I am able, if necessary, to obtain reciprocal licensure throughout the country in a short time period. I am inspired by our local built environment, humble materials, classical building forms and traditional building details. I have a strong interest in the reinterpretation of classical building forms, blended with contemporary open floor plans. I have a stronger interest in helping to guide my clients to ways of improving the quality of their lives through adapting the built environment to meet their needs.
"He was pretty responsive, caring, look into our concerns, manage to work everything, willing to work on the plans."
Kristina L on August 2023
High end architect specializing in making a house feel like home! I make people’s dream homes a reality. There is nothing more satisfying to me then improving the quality of life for my clients and giving them a house that they are able to make into their homes. I have been a licensed architect since 2015 and am currently registered in Rhode Island, Connecticut, New York, Maine and Massachusetts. With my NCARB certificate I am able, if necessary, to obtain reciprocal licensure throughout the country in a short time period. I am inspired by our local built environment, humble materials, classical building forms and traditional building details. I have a strong interest in the reinterpretation of classical building forms, blended with contemporary open floor plans. I have a stronger interest in helping to guide my clients to ways of improving the quality of their lives through adapting the built environment to meet their needs.
"He was pretty responsive, caring, look into our concerns, manage to work everything, willing to work on the plans."
Kristina L on August 2023
MGT Construction, Corp.
MGT Construction, Corp.
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!
"They did an awesome job. They were very professional. They were also very respectful. They respected our needs since my husband is already retired. Steve the project manager he was great along with his crew. They kept us in the loop of the progress on the project."
Joseph C on October 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!
"They did an awesome job. They were very professional. They were also very respectful. They respected our needs since my husband is already retired. Steve the project manager he was great along with his crew. They kept us in the loop of the progress on the project."
Joseph C on October 2025

AFM Inspections & Engineering, PLLC
AFM Inspections & Engineering, PLLC
For over 33 years, AFM Inspections & Engineering has been providing professional building inspection and engineering services to both residential and commercial clients throughout NYC and the outer boroughs. Fully licensed and insured, we have completed thousands of designs, evaluations, and other services to satisfied owners, property managers, agents, contractors, attorneys and building boards. Call today and let us know how we can be of service to you!
"They have outstanding service so far."
Paul J on August 2020
For over 33 years, AFM Inspections & Engineering has been providing professional building inspection and engineering services to both residential and commercial clients throughout NYC and the outer boroughs. Fully licensed and insured, we have completed thousands of designs, evaluations, and other services to satisfied owners, property managers, agents, contractors, attorneys and building boards. Call today and let us know how we can be of service to you!
"They have outstanding service so far."
Paul J on August 2020
The Islandia, NY homeowners’ guide to custom home building
From average costs to expert advice, get all the answers you need to get your job done.

Modular homes are more affordable than stick-built homes, but by how much? Learn about modular home costs to see if they fall within your budget.
•Get transparent shed repair cost info so you can learn average prices, cost factors, and ways to save on shed repairs for your home.

Few things elevate your outdoor space like a landscape architect can. Learn about how much a landscape architect costs and what affects your total.

Steel framing homes have a number of benefits over wood framing. Learn everything you need to know about steel framing homes, how they work, and the pros and cons of steel-framed homes.

Building a wheelchair ramp for your home or residential business can offer vital accessibility. Learn how to build a wheelchair ramp with this DIY guide.

How much does a container home cost? It depends on the number of containers you use. This guide will help map out potential expenses for your project.
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- 🌱 "Mow a small front yard"
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