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The Best Custom Home Builders in Old Westbury, New York

5 Min Read

For many experienced builders, building a custom home can be a walk in the park, even when it comes to building in historic neighborhoods with established aesthetics, such as Old Westbury, New York. Building a custom home here is a mission: making a home unique and responsive to the needs of its owner and having the home fit, in terms of style and design, within the rest of the neighborhood is a fun and interesting challenge.

We decided to compile seven of the best custom home builders in Old Westbury, New York. They were chosen based on their background, project, and style versatility, as well as their ability to tailor their work to the aesthetic and functional needs of their clients. 

915 Construction & Design

345 Hillside Ave., Williston Park, NY 11596

915 Construction & Design has been serving Long Island since its establishment in 1999. As a full remodel and new home building company, 915 is well-versed with the ins and outs of construction and takes on projects of any scale. Much of the completed work in its portfolio covers a range of project types, from kitchen and bathroom renovations to full custom home builds.

Pictured below is an example of 915’s work on a custom home build. This home was built in the French Normandy style, evoking images of the French countryside. The brick exterior, tile roof, and the single turret gives the home the imposing, yet warm feel of a chateau. The combination of casement and single-hung windows brings in a steady flow of light and air into the home.


69 Roslyn Rd, Roslyn Heights, NY 11577

BuiltByBeer is a luxury home builder founded and operated by Robert Beer. Robert got his start in the construction industry working for his family’s firm, Birchwood Development Company, which has been building homes for more than half a century in different architectural styles ranging from Cape Cod to Ranch and everything in between.

Robert carried his 25 years of experience over to BuiltByBeer, successfully serving Long Island’s East End and Gold Coast since his company’s founding. As a master builder, Robert and his firm have been producing the most elegant and well-built residences in the area, tastefully merging 19th Century craftsmanship and style with interior living spaces for the 21st Century.

Dream Builders

31 Columbus Ave, New Rochelle, NY 10801

Founded in 2004 by Robert Krakowiak, Dream Builders is a custom home builder and remodeling company that thrives on long-standing partnerships with some of the best craftsmen, tradesmen, contractors, and design professionals working in the industry today. 

The firm typically builds in the Traditional and Craftsman styles, favoring the simple symmetry and craftsmanship those styles create. The firm’s homes often feature exteriors of wood or stone, and sometimes a combination of both—a quality that brings texture to the exterior. Other features include casement, transom, and eyebrow windows, varieties of which increase the flow of light and air into the homes.


47 Morewood Oaks Port, Port Washington, NY 11050

HOMEREDI is a full-service renovation company that has been reliably serving Long Island for almost a decade. The firm offers complete interior and exterior remodeling expertise, electrical service and plumbing system upgrades, repairs and clean-up services, and building permit acquisition for clients’ extensions and site development needs.

For its custom homes, the firm builds in a variety of styles, from Traditional to French Normandy, and Transitional to Victorian. Pictured below is an example of the firm’s work. This transitional-style home boasts a stone and wood-combination exterior as well as a stone-wrought chimney to create a warm atmosphere. The home’s Victorian silhouette stands out, as do the inclusions of many windows to conduct the flow of light and air throughout the luminous home.

KOSL Building Group

875 Mamaroneck Ave, suite 400, Mamaroneck, NY 10543

Bobby Ben-Simon, the founder of KOSL Building Group, is one of the most sought-after developers in Westchester County. Bobby has a deep background in many related fields: engineering, architecture, even real estate brokerage. As Bobby has continued to grow his firm over the years, KOSL has eventually come to be recognized as one of the most prestigious real estate developers in Westchester County.

Today, Bobby and his firm continue to build their portfolio of diverse projects. In its gallery of finished homes, clients can find that the firm builds with design versatility, covering styles such as Traditional, Transitional, and Modern. Pictured below is an example of the firm’s work on a Modern home. The boxy, rectangular silhouette cleanly delineates between the materials used in the exterior. Large fixed windows offer a peek of the open floor plan and the ease of movement it creates. Overall, the home’s design is simultaneously sharp, functional, and inviting. 

Prestige Custom Building & Construction, Inc.

22 Meadow Drive, Albertson, NY 11507

Prestige Custom Building & Construction, Inc. is a general contracting and construction management company that specializes in renovating apartments, single-family homes, brownstones, and interior commercial spaces. Led by principal Lior Golan, the firm works mainly in the Tri-State area, with most of its work reaching the firm through referrals. 

Prestige Custom Building & Construction’s extensive range of residential and commercial construction services makes it a client’s ideal choice for any type of project, large or small. For its residential work, the firm has built and remodeled custom homes and lofts, estates, and townhomes, all in a variety of architectural styles, including Traditional, Victorian, and Craftsman. Though it employs different styles regularly in its repertoire, clients can expect that the quality of the firm’s work will be consistent and at a high level of craftsmanship throughout the build. 

Rockwell Developers LLC

124 Glen Cove Road, Roslyn Heights, NY 11577

Danny Ostad founded Rockwell Developers LLC in 2001 with the goal of building luxury homes in Long Island. Today, his firm is proficient in a number of architectural styles, including Victorian, Craftsman, Transitional, Colonial, Mediterranean, and Modern. Rockwell Developers builds custom homes that range in size, typically between 4,000 and 10,000 square feet, with some going even larger than that. 

A great example of the firm’s work is this French Stucco home, pictured below. The solid structure has an imposing silhouette, decked with the sharp lines of balconies and fixed windows. The symmetry of the home’s structure is apparent at the get-go, a quality that gives the home a feeling of order and functionality and promoting the easy flow of air, light, and activity.


  • Jake Gustafson

    Jake has served as a brings a wealth of experience rooted in his passion for building. Holding a degree in Construction Engineering Management from Oregon State University, he actively engaged in industry-related activities, including membership in the Associated General Contractors of America student chapter and participation in the Associated Schools in Construction student competition. Previously, Jake served as a project engineer for a prominent general contractor in Portland, where he played a pivotal role in various aspects of construction projects, from pre-construction to subcontractor management. His expertise extends to working on innovative projects, such as North America's largest CLT commercial building. Expertise: Commercial Construction, Commercial Remodeling, Home Design and Build Key Highlights: Editor at HomeBuilderDigest, Project Engineer for Portland-based general contractor, Field Engineer for the largest CLT commercial building in North America Education: Oregon State University - Degree in Construction Engineering Management