Stratum gathers NYC's public residential listings and enriches each one with data measured from the floorplan itself by our proprietary computer-vision model — estimated square footage, room-by-room breakdowns, and window and light metrics that aren't published anywhere. Filter by any factor, then export your comp set to Excel in a click.
Explore the demo free — no signup. The demo shows a sample market snapshot; a paid subscription unlocks the live feed, updated daily, plus Excel exports.
Standard listing sites let you filter by beds, baths, and price. Stratum lets you filter the market by the spatial data that actually defines a home — measured from the floorplan — and export the result.
One interactive map of the live NYC market — enriched with spatial data no other tool has.
NYC listings gathered from public sources, on a single map. Apply filters and matching listings light up green while the rest fade back — the whole market at a glance.
A computer-vision model we trained on hundreds of real NYC floorplans measures each layout and infers square footage — so you have a credible size even on the many listings that never report one.
See how every unit's space is actually allocated — what share is kitchen, bath, bedroom, and living area — computed directly from the floorplan.
Window count and window-edge percentage for each unit, derived from floorplan geometry — a measurable proxy for light and exposure.
Slide and select your way to the exact set of units you care about: neighborhood, rent, estimated sqft, year built, beds, baths, layout %, and window metrics.
Turn any filtered view into a clean comp list — address, neighborhood, estimated sqft, beds, baths, and link — exported to Excel in a single click.
Opens the interactive demo — a sample market snapshot — in a new tab. Subscribers get the live, daily-updated feed.
Stratum gives you an edge at every stage of the deal.
Narrow the entire live market down to the units that truly compare — by size, layout, light, and location — then export the set to Excel in seconds.
Compare like-for-like using ML-estimated square footage and real room breakdowns — so your number holds up in any seller conversation.
Pull up a schematic of any unit before a showing or a pitch — the measured footprint, where the rooms sit, how big each one is — so you can speak to the space with authority.
Each listing on the map carries a structured spatial profile, measured from the floorplan by a computer-vision model trained specifically on real NYC floorplans — not a general-purpose AI. A sample of what you can filter and export.
Full access to the map for one agent, or equip your whole team. Founding members get early-access pricing.
For the individual broker who wants an edge on every deal.
Equip your entire team with a competitive advantage on every deal.
Tell us about your business and we'll set you up with the right plan — plus founding-member pricing.