About Leasemark
A free marketplace for New York commercial space
Owners and brokers list space. Tenants, buyers and tenant reps post what they need. Leasemark scores every space against every requirement and introduces the two sides when both say yes. It is not a brokerage, it takes no commission, and the building pages around it are built from New York City's own records.
- To list or post
- $0
- Neighborhoods
- 48
- Building pages
- 1,277
- City datasets
- 11
What it is
A marketplace, not a broker
Listings come from the people who have the space: owners, landlords, their leasing brokers, and tenants with space to sublease. Requirements come from the people who need it: tenants, buyers and the brokers who represent them.
Every active space is scored against every active requirement on location, property type, size, budget, timing and features. Pairs that score 55 or more out of 100 become matches, and both sides see the score with the reasons behind it.
Intros are double opt-in. One side asks, the other accepts, and only then do both see each other's name, email and phone. How a match is scored
How it is paid for
Free to use. Paid extras are planned, and nothing charges today.
Free, and staying free
Listing space, importing a sheet, posting requirements, matching and intros cost nothing. So do the building pages, guides and calculators.
Optional extras, later
Broker Pro (tenant alerts, listing analytics, priority placement) and Featured boosts are in early access. Their prices are planned: there is no checkout and nothing is billed. See pricing
No ads
There are no ads on Leasemark and no advertising trackers. We count page views per post without recording who viewed them. Privacy
What is real
Real posts, and labeled examples
- Listings from users
- 0
- Requirements from users
- 0
- Labeled examples
- 38
Leasemark opened in September 2026. No listings or requirements from users are live yet. The first ones appear in search, on their neighborhood and building pages, and on the requirements board the moment they post.
Until real posts fill the site, a few demonstration posts show how listings and requirements look. Each carries an Example label, never matches a real post, and is never counted: every count, rent and demand figure on Leasemark comes from real posts only. The examples come down as real posts take their place.
Where the data comes from
The city records behind every building page
The 1,277 building pages, the street pages and the neighborhood pages are assembled from 11 public datasets on NYC Open Data and data.ny.gov, and each page cites the ones it uses. Last pulled September 30, 2026.
NYC Department of City Planning
Which buildings get a page, and their size, floors, year built, zoning and building class. Neighborhood totals of office, retail and industrial floor area.
NYC Department of City Planning
The other street addresses a building answers to, so a space typed at any of them lands on the right page.
NYC Landmarks Preservation Commission
- Individual Landmark Sites
- Individual Landmark and Historic District Building Database
- Designated and Calendared Buildings and Sites
Landmark designations, architects, dates and styles, and many of the building names you see.
NYC Department of Finance
Owner of record, market and assessed value, and the property tax estimate. Also a second check on each ZIP code.
NYC Department of Finance
Recorded deeds: when a building last sold and for how much. Buyers and sellers are named only when they are companies or public bodies.
NYC Department of Buildings and Mayor's Office of Climate and Environmental Justice
Energy use, ENERGY STAR score and the energy grade a building has to post at its entrance.
NYC Department of Buildings
Approved work permits: interior build-outs by floor, sidewalk sheds, and build-out counts by neighborhood.
Metropolitan Transportation Authority
The nearest stations, their lines and accessibility, and walking distance from each building.
NYC Department of Finance
Storefront counts and vacancy on retail and restaurant pages and along the main streets.
Update frequencies are as each dataset states on its portal (checked September 30, 2026). Addresses typed into Leasemark are placed with NYC Planning's GeoSearch, and maps use OpenFreeMap tiles with OpenStreetMap data. 20 building names the city records leave out come from a hand-checked list, and each of those pages says where the name was checked. Something wrong on a page? Tell us.
Questions about Leasemark
Is Leasemark a real estate broker?
No. Leasemark is a marketplace. It does not represent anyone in a deal, takes no commission, and is not a party to any lease or sale. Owners and brokers post the spaces, and deals are made between the people involved.
What does Leasemark cost?
Nothing. Listing space, importing an availability sheet, posting requirements, matching and intros are free, and they stay free. Broker Pro and Featured boosts are planned paid extras in early access: there is no checkout and nothing is billed.
Are the listings and requirements real?
Posts from users are real. A few demonstration posts carry an Example label: they never match a real post and are never counted in any number on the site.
Where does the building data come from?
From public New York City records published by the NYC Department of City Planning, NYC Landmarks Preservation Commission, NYC Department of Finance, NYC Department of Buildings and Mayor's Office of Climate and Environmental Justice, NYC Department of Buildings and Metropolitan Transportation Authority, pulled from NYC Open Data and data.ny.gov. Every building page names its sources.
How do I contact Leasemark?
Use the contact form or email hello@leasemark.co. To report a listing or requirement, use the Report link on its page so the message names the post.