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

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.

As a Manhattan apartment renovation architect, Mark Holmquist works across neighborhoods including the Upper East Side, Upper West Side, Tribeca, and Downtown Manhattan, navigating the complexities of co-op board approvals, landmark considerations, and 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 every project. This includes thoughtful material selection, energy-efficient systems, and layouts that support modern living in New York City.

From co-op renovations to townhouse transformations, as well as cultural and workplace environments, the studio creates architecture that is refined, contextually grounded, and highly personal. As a residential architect in NYC, Holmquist delivers work that is both precise and atmospheric—spaces defined by clarity, restraint, and lasting value.