Expert Witness in Residential Design and Construction
Bernstein & Associates, Architects, through its principal William N. Bernstein, AIA, has provided expert witness services in matters involving the design and construction of residential projects and related properties. Attorneys litigating cases that involve construction defects, water infiltration and building envelope failures, façade, roof, window, and curtain-wall failures, sponsor/developer warranty disputes, condominium and cooperative board disputes, alteration agreement matters, accessibility and Fair Housing Act violations, fire safety and egress issues, mechanical and electrical system failures, acoustical and vibration complaints, mold-related claims, and other claims related to the design and construction of residential buildings and dwelling units require an expert witness architect who understands both the applicable building codes and standards and the practical realities of how those requirements are applied in the design, construction, and renovation of real residential projects.
About Residential Project Design and Construction
Residential design and construction encompasses a broad range of housing types, including single-family houses, townhouses, brownstones, multi-family rental apartment buildings, condominium and cooperative apartment buildings, mixed-use buildings with residential floors, and the individual dwelling units, common elements, and amenity spaces within them.
The design and construction of residential buildings is governed by a complex framework of technical standards, including the applicable building code (for example, in New York City, the New York City Building Code; in New York State, the New York State Residential Code for one- and two-family dwellings), the International Building Code, the International Residential Code, ICC A117.1, NFPA 101 Life Safety Code, ADA and Fair Housing Act requirements, the New York State Multiple Dwelling Law, the Energy Conservation Construction Code, and the construction documents, offering plans, proprietary leases, alteration agreements, and contracts specific to each project.
Disputes commonly arise over construction defects affecting building envelopes, façades, roofs, windows, terraces, and interior finishes; water infiltration and resulting mold and damage; defective mechanical, electrical, plumbing, sprinkler, and elevator systems; acoustical transmission between units and from mechanical equipment; non-compliant accessibility features and Fair Housing Act violations; inadequate fire-rated assemblies and egress; sponsor/developer warranty and Offering Plan disputes; condominium and cooperative board disputes over common-element repairs; and alteration agreement matters in cooperative and condominium buildings. Responsibility for compliance with the applicable standards is shared, in different ways, among the owner, the sponsor/developer, the condominium or cooperative board, the design professional, the contractor, subcontractors, individual unit owners or shareholders, and the party responsible for ongoing maintenance, and litigation in this area frequently turns on the allocation of responsibility for design decisions, construction means and methods, and post-occupancy maintenance.
Expert Witness Services Related to Residential Project Design and Construction
Expert witness services in residential design and construction matters typically include a careful review of the project documents (drawings, specifications, submittals, RFIs, change orders, permits, certificates of occupancy, contracts, offering plans, proprietary leases, alteration agreements, board minutes, engineer/architect reports, and as-built conditions), a site survey to measure and document the conditions at issue, comparison of those conditions against the applicable building codes, life safety codes, accessibility and fair-housing standards, and industry standards of care, review of construction administration records and maintenance histories, and the preparation of clear, well-supported opinions regarding the cause of the defect or failure, the responsibility of the various parties, and the standard of care applicable to the design, construction, and maintenance of residential buildings.
An effective residential project design and construction expert witness must be able to explain technical requirements — façade, roof, and terrace detailing, window and curtain-wall installation, waterproofing, fire-rated assembly construction, egress geometry, accessibility and fair-housing clearances, MEP system design, and acoustical isolation between dwelling units — in plain language to judges, juries, arbitrators, and mediators, and must have the credentials, written record, and courtroom-ready communication skills to render credible opinions.
Mr. Bernstein is a Yale-trained, NCARB-certified, LEED-accredited, registered architect. He has expertise in architectural design, engineering design, and construction as the founder/owner of an architectural firm, Bernstein & Associates, Architects, (1990-present) and as the founder/owner of a construction project management firm, Empire Projects, Inc. (2003-Present). He has been the expert witness (as of May 2026) on (40) cases involving design and construction (2006-present) across the United States and Internationally.
Contact
Please contact Bernstein & Associates, for expert witness services related to the design and construction of residential buildings and dwelling units.