NY Property Peek is a map for looking up property details anywhere in New York State — search an address or click the map to see year built, square footage, school district, and more.
Property data: New York State GIS tax parcel records.
Map tiles: CARTO / OpenStreetMap contributors.
Street-level imagery: Google Street View.
Looking up property records in New York State
Every parcel of land in New York — about 5.5 million of them — is on an assessment roll somewhere, filed by the assessor of the town, city or village it sits in. Those rolls record when the building went up, how big it is, how the state classifies its use, which school district it pays into, and what the assessor thinks it is worth. All of it is public. Almost none of it is easy to get at, because it lives in sixty-odd separate county GIS portals that share no common search, no common map, and no common idea of what a parcel lookup should look like.
This map is all of it in one place. Type an address, or click anywhere in the state, and the record for the nearest parcel opens up. Zoom in far enough and the lot lines are drawn in too, in the 38 counties that publish boundary data. There is no account to make and nothing to install.
What the parcel record is telling you
Assessment records are written for tax administration, not for the curious, and a few of the fields mean something narrower than they sound like. The short version of each, in the order the panel shows them:
Year built
The year the main structure went up, as the assessor has it filed. Treat it as the age of the building's bones rather than of what you see: a gut renovation, a second storey or a replacement structure often never updates the field. Coverage is the single most uneven thing in the dataset — some counties fill it in on nearly every parcel, and Nassau County records it on none at all.
Living area
Finished, heated square footage inside the residence. Garages, porches, unfinished basements and anything detached are normally left out, but where the line falls is an individual assessor's judgment, so two identical houses in different towns can be recorded hundreds of square feet apart.
Property class
A three-digit code the state uses to describe how a parcel is actually being used right now — a one-family residence, an apartment building, vacant rural land, a farm. It is emphatically not zoning: it says nothing about what may be built there or what the land could become. It is also what drives the map's colouring when you zoom out.
School district
The district the parcel is assessed into. Worth looking up precisely because you cannot guess it: New York's school district lines were drawn independently of town and county lines and cross both freely, so two houses on the same street can pay into different districts.
Assessed value and full market value
The assessed value is the figure the town taxes against, and in most municipalities it is deliberately only a fraction of what the property would sell for. The full market value is that number scaled back up by the municipality's equalisation rate. The second is the more meaningful of the two, but it is still an assessor's estimate on an assessment cycle — not an appraisal and not a sale price. A few places file none at all; Brooklyn and Queens are the largest.
Acreage and the drawn boundary
The acreage comes off the assessment roll; the shape drawn on the map comes from a separate state GIS dataset. They are independent records of the same lot and they do sometimes disagree, usually slightly. Where a county publishes no boundary data, the map draws nothing rather than guessing at a line.
SWIS and SBL
The identifiers that actually pin a parcel down — a six-digit code for the assessing municipality, and a section–block–lot key for the parcel inside it. A street address is a convenience; this pair is how the parcel is referenced on the tax roll, and what you would quote to a clerk's office.
What the dataset actually contains
These figures are counted straight from the parcel records behind this map — not sampled, estimated or modelled. They are worth stating plainly because coverage is genuinely uneven, and a field being blank in one county is a fact about the county, not about the property.
5,510,061 tax parcel records, across 62
counties and 1,528 towns, cities and
villages.
What this is not
Not a title search. Nothing here establishes who owns a parcel, or what easements, liens or covenants run with it.
Not a survey. The boundaries are mapping data, not a surveyed description, and are the wrong basis for siting a fence or settling a line dispute.
Not current. Assessment rolls lag reality by months or years — a recent sale, subdivision or demolition may not show up yet.
For anything that has to be correct — legally, financially, or before you dig — go to the county clerk, the assessor's office, or a licensed surveyor or title company.