Commercial-to-Residential Conversions: Not Just For Big Developers

Building legal occupancy status is fluid. In fact, New York City’s zoning map is full of opportunity: nearly 70% of buildings sit on lots where residential use is permitted, whether or not they’re being used or marketed as such. But the real revelation is that occupancy changes can also be applied to individual commercial and co-operative units, meaning small commercial units can be made into residential housing or hybrids thereof. Sounds difficult? It’s actually not.

The underutilized potential of small-scale conversions was first hypothesized after our office received a number of calls from owners about illegal, non-conforming uses. Owners were wondering how they could correct a Certificate of Occupancy issue where a listed commercial store unit was actually being used as a residence. We realized that corrections and conversions were not typically difficult, it only required proving its legal use. This raised a larger question: why not leverage this notion to convert commercial spaces into housing?

This may not be a groundbreaking conclusion, but applying this practice to individual units is—especially in a market like New York City, where there is a large inventory of individual commercial units for sale. These spaces vary widely in size and type, from 300-square-foot storefronts to entire single floors of multi-story commercial buildings.

This insight has reshaped our trajectory. Andre Architecture has leaned into adaptive reuse and small-scale development, becoming a leading advocate for micro-conversions and occupancy transformations. The firm’s research has since been presented at Parsons School of Design, Elegran Real Estate, Keller Williams, and Langdon Title, helping brokers, designers, and property owners rethink what’s possible within the city’s legal framework.

As part of our overarching mission to educate and empower people in architecture and design, we aim to demystify the conversion process and show that small-scale occupancy changes are an underutilized and accessible tool that can unlock enormous potential—bespoke live/work environments, discounted property assets, and inventive uses that maximize value in a city where every square foot counts.