Mark Holmquist Architect is a New York–based architecture and interior design studio specializing in high-end residential work throughout Manhattan. With over two decades of experience, the firm is recognized for apartment renovations, co-op and condominium design, townhouses, and custom homes, as well as select cultural, workplace, and commercial projects.

The studio takes a layered approach that integrates architecture, interiors, and objects into a cohesive whole. This methodology extends across project types—from private residences and apartment renovations to cultural spaces and workplace environments—each approached with the same level of rigor, clarity, and refinement.

The practice works extensively on apartment renovations across Manhattan, including the Upper East Side, Upper West Side, Tribeca, and Downtown. Projects often involve navigating co-op board approvals, landmark considerations, and the complexities of high-end construction. In parallel, the studio undertakes select cultural and workplace commissions, bringing a residential sensibility to environments that demand both performance and atmosphere.

At the core of the practice is a commitment to design as both discipline and experience. The work emphasizes proportion, material quality, and spatial clarity, balancing classical principles with a contemporary sensibility. Each project is developed to feel enduring, intentional, and quietly expressive.

Mark Holmquist is a LEED-accredited architect, incorporating sustainability, wellness, and long-term performance into each project through thoughtful material selection, energy-efficient systems, and layouts that support modern living in New York.

From co-op renovations to townhouse transformations, the studio creates architecture that is refined, contextually grounded, and highly personal. The work is defined by clarity, restraint, and lasting value.