NYC subsurface screening

Know the ground before you buy the lot.

Type any NYC address. See nearby borings, groundwater and bedrock from public records, plus a free risk band. Get the full $24 report with the exact score.

The map and risk band are free. You only pay for a report.
Cross-section at 118–138 Hope Street, Williamsburg, from the 2018 AKRF geotechnical report: fill 8–15 ft, organic silt and clay to 10–18 ft, glacial sand to 60–65 ft, groundwater at about 10.5 ft. 01020304050 ft B-1B-4(OW)B-8 Fill, 8–15 ft · N 1–26 Organic silt & clay · N 1–2 Glacial sand · avg N 19 ▽ GW 10.5 ft
118–138 Hope Street, Williamsburg. From the 2018 geotechnical report on file with NYSDEC. LotProbe score: 78, High.
1,792sites with boring data
13,887bedrock points
158groundwater wells
856,815searchable addresses

How it works

01

Search an address

Any lot in the five boroughs.

Free
02

See what's nearby

Borings, groundwater, bedrock and cleanup sites, with sources.

Free
03

Get the report

A PDF with a 0–100 risk score and plain-language findings.

$24

What the record already knew

Two real NYC sites, from reports on public file.

118 Hope St, Williamsburg

Score 78 · High

15 ft of fill over soft organic soil, water at 10 ft. Piles were recommended. Dozens of nearby boring records already showed it.

1454 39th St, Borough Park

Score 42 · Moderate

Dense glacial soil, water at 45 ft. A 24-ft cellar stays above the water. Good news is worth knowing too.

Analyses of public NYSDEC records, not customer projects.

Why it helps

Fewer surprises

Spot dewatering, piles and contaminated fill before you make an offer.

Faster research

AI read 120,000+ pages of filings so you don't have to.

Every number cited

Each value links to the report it came from.

Better borings

Give your engineer what's known so the investigation targets what isn't.

Pricing

Map

$0
  • Address search
  • Risk band for any lot
  • All data layers and sources
Open the map

Site report

$24
  • Exact score and breakdown
  • Key findings and PDF
  • Share link and listing badge
Get a report

Portfolio

$19 / site
  • Paste a list of addresses
  • Ranked from highest risk down
  • One combined report
Screen a list
Free guide

NYC Ground Guide

Groundwater, bedrock and risk mix for 175 ZIP codes. See how your neighborhood compares.

Browse ZIP codes
Founding pilot

Free reports for early partners

Brokers, developers and engineers: unlimited reports for 60 days in exchange for honest feedback on what the record got right and wrong.

Ask about the pilot

Check your next lot before you bid.

Open the map →