STONE provides alteration review services for all types of renovations throughout New York City and the Tri-State Area. Acting as the building's engineering representative, STONE reviews proposed apartment alterations to help ensure the work complies with applicable codes, building requirements, and established alteration policies.

Before construction begins, STONE reviews submitted drawings, scopes of work, specifications, and other project documents — evaluating each proposal against the building's existing conditions and systems to flag concerns that should be resolved before work starts.

Reviews scale with the project, from minor alterations to extensive renovations involving layout changes or modifications to building systems or structural components. STONE coordinates architectural, structural, mechanical, and electrical expertise as needed for a comprehensive review.

When requested, STONE also provides construction-phase observations and milestone inspections to monitor work in progress and flag significant deviations from approved plans, including coordination with the project's design professionals and contractors.



STONE's goal is to help residents achieve their renovation objectives while protecting the building's safety, systems, and character — supporting Boards and Management in maintaining standards and enabling responsible renovations.