French Normandy Revival

Into The New Millennium

Cosmopolitan Chic​ 

Flawlessly Functional

Move That Fireplace

White & Stainless

Modern City Living

The Park View

Addition & Expansion

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Hierarchy Architecture + Design PLLC | Traditional + Contemporary Designs | Long Island Architect

Respectful of the past, excited about the future

Hierarchy Architecture + Design PLLC is a Long Island architecture firm based out of Manhasset, NY, in Nassau County. Hierarchy is one of Long Island's premier architecture and design firms, with a team of  talented architects led by Principal, T.J. Costello. We specialize in providing customers with timeless architecture solutions by creating or remodeling classic homes that are seamlessly integrated into the neighborhood's existing context. Hierarchy Architecture + Design PLLC is known for designing custom residential, primary & vacation homes in modern, contemporary, traditional or transitional styles. Our team of architects has developed an impressive portfolio of projects from large scale new building, ground-up architecture projects, to smaller more detailed requests like custom millwork. The architecture firm has become known on Long Island for its seamless residential gut renovations, and Tudor restorations, creating "new-old homes" by breathing life back into  classically designed houses. The team of architects has also done interior renovations and exterior renovations or additions for many brick colonial homes in the Tri-State area.  Aside from single-family residential projects, Hierarchy has also completed multi-family housing or institutional housing projects, as well as commercial hospitality projects, such as bars and restaurants. T.J. Costello, the Principal architect for Hierarchy Architects + Designers PLLC  is the only Long Island architect who is also Certified Kitchen Designer and most home remodels that are done often include a kitchen renovation, and bath renovation.  Follow the link to learn more about the architecture and design services we offer. For additional information or to book a consultation with us, click here to contact or view our contact information.

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