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There are 8 highly-rated local custom home builders.
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Verified Reviews for Custom Home Building pros in Southampton, NY
*The Angi rating for Custom Home Building companies in Southampton, 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 Southampton, 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 November 19, 2025
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Evolution Drafting
Evolution Drafting
Our firm is a dynamic provider of drafting and house plan services, dedicated to turning your visions into tangible and pleasing structures. With a commitment to excellence, we bring expertise and innovation to every project we undertake. We specialize in comprehensive drafting services tailored to meet diverse client needs. Our offering include: Design: Crafting unique and functional designs that blend creativity with practicality. Drafting Services: Precision and attention to detail in creating accurate and detailed drafts for seamless project execution. 3D Modeling: Bringing designs to life with realistic 3D models that provide a vivid preview of the final structure. Project Management: From concept to completion, we offer end-to-end project management ensuring timely and efficient delivery. Interior Design: Enhancing spaces with innovative interior designs that harmonize aesthetics and functionality. Detail Services Offered: - Building Code Compliance - Construction Documentation - Renovation and Remodeling Plans About our Team: Our team comprises draftsman and project managers, each bringing a unique skill, style and experience to the table. Collaborative teamwork and alliance is at the core of our success, ensuring a holist approach to every project. We take pride in our commitment to delivering high-quality work on every project. Our rigorous quality control measures, pays attention to client requirements, and adherence to industry standards are the cornerstones of our success. Your satisfaction is our top priority and guarantee. At Evolution Drafting, we don't design structures; we create environments that inspire and endure. Work with us and experience the art of living.
"slow response times. no onsite visit, so had to confirm all measures myself. good product in the end."
Jim E on September 2025
Our firm is a dynamic provider of drafting and house plan services, dedicated to turning your visions into tangible and pleasing structures. With a commitment to excellence, we bring expertise and innovation to every project we undertake. We specialize in comprehensive drafting services tailored to meet diverse client needs. Our offering include: Design: Crafting unique and functional designs that blend creativity with practicality. Drafting Services: Precision and attention to detail in creating accurate and detailed drafts for seamless project execution. 3D Modeling: Bringing designs to life with realistic 3D models that provide a vivid preview of the final structure. Project Management: From concept to completion, we offer end-to-end project management ensuring timely and efficient delivery. Interior Design: Enhancing spaces with innovative interior designs that harmonize aesthetics and functionality. Detail Services Offered: - Building Code Compliance - Construction Documentation - Renovation and Remodeling Plans About our Team: Our team comprises draftsman and project managers, each bringing a unique skill, style and experience to the table. Collaborative teamwork and alliance is at the core of our success, ensuring a holist approach to every project. We take pride in our commitment to delivering high-quality work on every project. Our rigorous quality control measures, pays attention to client requirements, and adherence to industry standards are the cornerstones of our success. Your satisfaction is our top priority and guarantee. At Evolution Drafting, we don't design structures; we create environments that inspire and endure. Work with us and experience the art of living.
"slow response times. no onsite visit, so had to confirm all measures myself. good product in the end."
Jim E on September 2025
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

Best Project Construction Corp.
Best Project Construction Corp.
We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We have many years of experience to give you confidence that we are your number one choice for your next home project. You will find us to be competitively priced with close attention to the details. We look forward to building a lasting relationship and guarantee your satisfaction!
"Glen is hard working reliable contractor"
Jess S on August 2024
We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We have many years of experience to give you confidence that we are your number one choice for your next home project. You will find us to be competitively priced with close attention to the details. We look forward to building a lasting relationship and guarantee your satisfaction!
"Glen is hard working reliable contractor"
Jess S on August 2024

Jo Machinist Architect
Jo Machinist Architect
My architecture firm's specialty is new construction, renovations and restorations. Our work respects existing styles and we provide innovative solutions with an uncompromising commitment to design excellence and client satisfaction. The goal of all our projects is to bring harmony, balance and an aesthetic flow to the home / building.
"Jo is an EXPERT in both design, and historic renovation to create a house that works with a modern flow and respects the historic nature of the setting and neighboring community if one is dealing with historic boards. She has great vision and knows how to utilize all possible space to allow for best use of light, air and traffic flow."
Barbara M on January 2024
My architecture firm's specialty is new construction, renovations and restorations. Our work respects existing styles and we provide innovative solutions with an uncompromising commitment to design excellence and client satisfaction. The goal of all our projects is to bring harmony, balance and an aesthetic flow to the home / building.
"Jo is an EXPERT in both design, and historic renovation to create a house that works with a modern flow and respects the historic nature of the setting and neighboring community if one is dealing with historic boards. She has great vision and knows how to utilize all possible space to allow for best use of light, air and traffic flow."
Barbara M on January 2024

Daniel Koplowitz, Architect
Daniel Koplowitz, Architect
I established my practice in 1988 with a focus on Historic Preservation and exterior restoration. Over the 40 years of practice I have gravitated toward renovations and new construction that impact older structures or historic contexts. My practice is eclectic and a result of varied experience. In part, living overseas, in France, Italy, Brazil and Belgium had the most influence in my becoming an Architect. I began my professional career in Washington, DC and came to New York after receiving a Masters degree in Architecture specializing in historic preservation. Whether restoring historic buildings or expanding and renovating others, I am committed to achieving a result that serves my clients' needs and provides beauty with lasting value. I continue to pursue preservation ideals, not only to preserve the built environment, but to recycle, restore and create a healthy built environment. Energy conservation and sustainable architecture is rooted in the preservation
"Our experience with Preservation Design Group was first rate all the way. From start to finish, the architect was responsive, attentive, creative and professional. We were impressed by Dan Koplowitz's attention to detail and willingness to listen to what we wanted to achieve with the project, which added over 1500 square feet, relocated bathrooms and renovated and enlarged the kitchen. Dan worked diligently to meld the exisiting house with the new and provided plans that our town approved without requiring modifications and the building dept. is quite strict. The builder Dan recommended was excellent and they worked well as a team."
Patsy M on June 2008
I established my practice in 1988 with a focus on Historic Preservation and exterior restoration. Over the 40 years of practice I have gravitated toward renovations and new construction that impact older structures or historic contexts. My practice is eclectic and a result of varied experience. In part, living overseas, in France, Italy, Brazil and Belgium had the most influence in my becoming an Architect. I began my professional career in Washington, DC and came to New York after receiving a Masters degree in Architecture specializing in historic preservation. Whether restoring historic buildings or expanding and renovating others, I am committed to achieving a result that serves my clients' needs and provides beauty with lasting value. I continue to pursue preservation ideals, not only to preserve the built environment, but to recycle, restore and create a healthy built environment. Energy conservation and sustainable architecture is rooted in the preservation
"Our experience with Preservation Design Group was first rate all the way. From start to finish, the architect was responsive, attentive, creative and professional. We were impressed by Dan Koplowitz's attention to detail and willingness to listen to what we wanted to achieve with the project, which added over 1500 square feet, relocated bathrooms and renovated and enlarged the kitchen. Dan worked diligently to meld the exisiting house with the new and provided plans that our town approved without requiring modifications and the building dept. is quite strict. The builder Dan recommended was excellent and they worked well as a team."
Patsy M on June 2008
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

Pseudonym Studio
Pseudonym Studio
Pseudonym Studio takes great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the 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.
"Andrew was very professional, responsive and did a complete and thorough job would highly recommend them"
Mark O on July 2023
Pseudonym Studio takes great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the 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.
"Andrew was very professional, responsive and did a complete and thorough job would highly recommend them"
Mark O on July 2023

AO Architecture & Design
AO Architecture & Design
Serving residential, museum, and commercial clients from Martha's Vineyard to Concord, NYC to the Hamptons, and Vermont to Maine, AO Architecture & Design is full service architecture and design firm led by Harvard- and Yale- educated Zander Auerbach and Emily Ottinger. AO is dedicated to building beautiful and practical spaces and to preserving the natural world.
"Working with Zander at AO Architecture and Design has been an absolute pleasure from start to finish. His blend of creative vision and practical expertise truly sets him apart in the world of architecture. Zander has an uncanny ability to listen and understand his client needs, transforming those ideas into thoughtful, innovative designs that not only meet but exceed expectations. His attention to detail is exceptional. Every line, every angle, and every material choice is carefully considered to ensure that the final product is both functional and aesthetically stunning. What I particularly appreciate about Zander is his commitment to sustainability and how seamlessly he integrates ecofriendly practices into his designs, making the spaces he creates not only beautiful but also environmentally conscious. Zanders collaborative approach makes him a joy to work. His passion for design is evident in everything he does, and it shows. I cant recommend Zander highly enough."
Mike N on November 2024
Serving residential, museum, and commercial clients from Martha's Vineyard to Concord, NYC to the Hamptons, and Vermont to Maine, AO Architecture & Design is full service architecture and design firm led by Harvard- and Yale- educated Zander Auerbach and Emily Ottinger. AO is dedicated to building beautiful and practical spaces and to preserving the natural world.
"Working with Zander at AO Architecture and Design has been an absolute pleasure from start to finish. His blend of creative vision and practical expertise truly sets him apart in the world of architecture. Zander has an uncanny ability to listen and understand his client needs, transforming those ideas into thoughtful, innovative designs that not only meet but exceed expectations. His attention to detail is exceptional. Every line, every angle, and every material choice is carefully considered to ensure that the final product is both functional and aesthetically stunning. What I particularly appreciate about Zander is his commitment to sustainability and how seamlessly he integrates ecofriendly practices into his designs, making the spaces he creates not only beautiful but also environmentally conscious. Zanders collaborative approach makes him a joy to work. His passion for design is evident in everything he does, and it shows. I cant recommend Zander highly enough."
Mike N on November 2024

Agate & Co. Builders
Agate & Co. Builders
If you are looking for an experienced, reliable, and honest contractor to help you with your next construction project then consider Agate & Co. Builders. As a father and son team we have performed a variety of construction projects in the New York Tri-State area including; kitchens, baths, decks, windows, doors, flooring, trim, siding, tile, additions, and finished basements. At Agate & Co. Builders we have more than 35 years of construction experience working for us. We pride ourselves on our long history of outstanding craftsmanship and customer service, which is unparalleled in the industry. We remain a small construction company that performs most of the work ourselves using a few, hand-selected and highly qualified sub-contractors when needed. This consistently allows our high standards to be applied and is demonstrated in the quality of our work. We truly love what we do and look forward to helping you make the home of your dreams.
"Jim and his crew went over and above our expectations. They did a beautiful job on our new deck. When completed, they cleaned up and carted away all scraps. A truly professional job by all."
William B on May 2024
If you are looking for an experienced, reliable, and honest contractor to help you with your next construction project then consider Agate & Co. Builders. As a father and son team we have performed a variety of construction projects in the New York Tri-State area including; kitchens, baths, decks, windows, doors, flooring, trim, siding, tile, additions, and finished basements. At Agate & Co. Builders we have more than 35 years of construction experience working for us. We pride ourselves on our long history of outstanding craftsmanship and customer service, which is unparalleled in the industry. We remain a small construction company that performs most of the work ourselves using a few, hand-selected and highly qualified sub-contractors when needed. This consistently allows our high standards to be applied and is demonstrated in the quality of our work. We truly love what we do and look forward to helping you make the home of your dreams.
"Jim and his crew went over and above our expectations. They did a beautiful job on our new deck. When completed, they cleaned up and carted away all scraps. A truly professional job by all."
William B on May 2024

Rosebery Architectural Studio
Rosebery Architectural Studio
Rosebery Architectural Studio, serves Long Island and New York, with projects as diverse as simple sunrooms and residential additions, to commercial and institutional projects. With over 30 years experience, I have provided architectural services for a large number of clients, representing a wide variety of projects. Call today for a free consultation.
"Project was developing a pool plan for a town of Brookhaven permit. Jack was experienced and created excellent plans in a short period of time. Great experience!!"
Thomas S on August 2016
Rosebery Architectural Studio, serves Long Island and New York, with projects as diverse as simple sunrooms and residential additions, to commercial and institutional projects. With over 30 years experience, I have provided architectural services for a large number of clients, representing a wide variety of projects. Call today for a free consultation.
"Project was developing a pool plan for a town of Brookhaven permit. Jack was experienced and created excellent plans in a short period of time. Great experience!!"
Thomas S on August 2016
The Southampton, NY homeowners’ guide to custom home building
From average costs to expert advice, get all the answers you need to get your job done.

The cost to build a stone house is pricey. Learn why you need specialized workers to build the house to a level that’s good enough for you and the city.

The cost to convert a vaulted ceiling to a second floor depends on factors such as its size, intended function, materials, and the project's complexity.

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

Learn about the different types of floor plans you can choose, including floor plan drawings and specific layouts for interior and exterior spaces.

Brick houses were the standard of the 19th and 20th centuries, and they’re looking to make a comeback. Find out if a brick exterior is right for you.

Concrete is a more durable building material than lumber. Learn how much a concrete house costs to build and what factors may affect your pricing.
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