Land due diligence data for acquisitions and real estate
Answer the first land due diligence questions about a parcel in minutes: what the record says, whether public water and sewer are mapped there, and what sits nearby.
Land due diligence: the job to be done
Acquisition teams, land brokers and lenders look at far more parcels than they ever close on. Before paying for surveys, title work and a Phase I, they need a fast read on each one: the assessor record, utility service, environmental flags and access.
Korzy returns those answers from published records at a point or a parcel ID, as screening inputs for a human decision, not as a substitute for formal diligence.
Questions Korzy answers for land due diligence
- What does the parcel record say: land use, acreage, building, values and last sale?
- Is the parcel inside a mapped public water and sewer service area, and where is the nearest treatment plant?
- Are there cleanup sites, protected areas or critical habitat nearby?
- How far is the nearest rail line or freight corridor?
API routes and MCP tools for land due diligence
Each MCP tool on the Korzy MCP server runs the matching API route, at the same credits. Routes link to their section of the API reference; credits and rate limits covers what each request costs.
| MCP tool | API route | What it returns |
|---|---|---|
lookup | /v1/lookup | The parcel at an address, with the assessor fields Korzy publishes and a parcel ID. |
lookup | /v1/lookup | With the utilities section: water and sewer service areas at the parcel and the nearest treatment plants. |
lookup | /v1/lookup | With the environment, logistics and terrain sections: environmental layers and cleanup sites, rail and freight access, and slope. |
get_record | /v1/records/{id} | A full parcel record by ID, or any record a lookup returned. |
enrich | /v1/enrich | Values, last sale and, with the owner group, owner fields for a list of parcels (owner fields on request, opt-in per organization). |
Example requests and production responses
Real responses from the production API, captured November 5, 2026 and trimmed to the main fields. Every request needs an API key; see API authentication.
1. Water and sewer service at a parcel
Mapped service areas at 2304 Hillsborough St, Raleigh, and the nearest treatment plants. 2 credits.
curl --fail-with-body -sS \
-H "Authorization: Bearer $KORZY_API_KEY" \
-H "Content-Type: application/json" \
-d '{"address":"2304 Hillsborough St, Raleigh, NC","sections":["utilities"]}' \
https://api.korzy.co/v1/lookupProduction response (trimmed)
{
"location": {
"longitude": -78.66618558988388,
"latitude": 35.78758805,
"address": "2304 HILLSBOROUGH ST, RALEIGH",
"match_type": "exact"
},
"parcels": {
"records": [
{
"id": "37183-a18c4295290bf3664953",
"bldgsqft": 32147,
"countyname": "Wake",
"latitude": 35.78758805,
"longitude": -78.66618558988388,
"korzy_id": "37183-a18c4295290bf3664953",
"parceladdr": "2304 HILLSBOROUGH ST",
"parcelcity": "RALEIGH",
"parcelid": "0794910704",
"saleamt": 225000,
"saledate": "1989-08-17",
"statefp": "37",
"taxacres": 0.21,
"totalvalue": 9236920,
"updated": "2026-05-17",
"usedesc": "C",
"yearbuilt": 2016,
"situs_zip": "27607",
"legal_description": "LO17 HARRIS CHAMBERLAIN BM1915 -50",
"land_use_code": "COM",
"alternate_parcel_number": "0051702",
"building_count": 2,
"land_value_usd": 2476416,
"improvement_value_usd": 6760504,
"last_sale_document": "Deed Book/Page 016128/02260",
"geoid": "37183",
"parcelid2": "0051702",
"ogparcelid": "0794910704"
}
],
"truncated": false,
"provenance": {
"source": "Korzy parcels",
"as_of": "2026-11-04"
}
},
"sections": {
"utilities": {
"status": "ok",
"data": {
"water": [
{
"id": "utility:water:29943",
"feature_id": "water:29943",
"name": "RALEIGH, CITY OF",
"boundary_basis": "System Sourced"
}
],
"sewer": [
{
"id": "utility:sewer:2161",
"feature_id": "sewer:2161",
"name": "NEUSE RIVER RESOURCE RECOVERY FACILITY",
"boundary_basis": "Sourced"
}
],
"treatment_plants": [
{
"id": "utility:treatment:7989",
"feature_id": "treatment:7989",
"name": "NORTH CARY WWTP",
"distance_km": 11.327081897513994
},
{
"id": "utility:treatment:7990",
"feature_id": "treatment:7990",
"name": "SOUTH CARY WWTP",
"distance_km": 17.150176534137536
},
{
"id": "utility:treatment:7988",
"feature_id": "treatment:7988",
"name": "APEX WWTP",
"distance_km": 17.341430989229266
}
],
"truncated": {
"water": false,
"sewer": false
}
},
"provenance": [
{
"dataset": "water",
"data_version": "63b7c1c3-9661-4fed-a59f-ddbfff80c2e4"
},
{
"dataset": "sewer",
"data_version": "63b7c1c3-9661-4fed-a59f-ddbfff80c2e4"
},
{
"dataset": "treatment",
"data_version": "63b7c1c3-9661-4fed-a59f-ddbfff80c2e4"
}
]
}
},
"credits": {
"charged": 2,
"refunded": 0
},
"credits_url": "/v1/fields#attribution"
}2. Environmental screening at the same parcel
Environmental layers at the parcel and cleanup sites within 10 km. 2 credits.
curl --fail-with-body -sS \
-H "Authorization: Bearer $KORZY_API_KEY" \
-H "Content-Type: application/json" \
-d '{"address":"2304 Hillsborough St, Raleigh, NC","sections":["environment"]}' \
https://api.korzy.co/v1/lookupProduction response (trimmed)
{
"location": {
"longitude": -78.66618558988388,
"latitude": 35.78758805,
"address": "2304 HILLSBOROUGH ST, RALEIGH",
"match_type": "exact"
},
"parcels": {
"records": [
{
"id": "37183-a18c4295290bf3664953",
"bldgsqft": 32147,
"countyname": "Wake",
"latitude": 35.78758805,
"longitude": -78.66618558988388,
"korzy_id": "37183-a18c4295290bf3664953",
"parceladdr": "2304 HILLSBOROUGH ST",
"parcelcity": "RALEIGH",
"parcelid": "0794910704",
"saleamt": 225000,
"saledate": "1989-08-17",
"statefp": "37",
"taxacres": 0.21,
"totalvalue": 9236920,
"updated": "2026-05-17",
"usedesc": "C",
"yearbuilt": 2016,
"situs_zip": "27607",
"legal_description": "LO17 HARRIS CHAMBERLAIN BM1915 -50",
"land_use_code": "COM",
"alternate_parcel_number": "0051702",
"building_count": 2,
"land_value_usd": 2476416,
"improvement_value_usd": 6760504,
"last_sale_document": "Deed Book/Page 016128/02260",
"geoid": "37183",
"parcelid2": "0051702",
"ogparcelid": "0794910704"
}
],
"truncated": false,
"provenance": {
"source": "Korzy parcels",
"as_of": "2026-11-04"
}
},
"sections": {
"environment": {
"status": "ok",
"data": {
"radius_km": 10,
"matches": {
"air_quality_areas": [
{
"id": "poi:air-quality-areas:air_quality_areas:0:103",
"feature_id": "air_quality_areas:0:103",
"name": "Raleigh-Durham-Chapel Hill Area · Ozone 8-hr (1997 standard) · NC",
"status": "Maintenance",
"state": "NC",
"category": "Ozone 8-hr (1997 standard)",
"poi_slug": "air-quality-areas",
"geometry_kind": "area"
},
{
"id": "poi:air-quality-areas:air_quality_areas:10:64",
"feature_id": "air_quality_areas:10:64",
"name": "Raleigh-Durham Area · Ozone 1-hr (1979 standard-revoked) · NC",
"status": "Maintenance (NAAQS revoked)",
"state": "NC",
"category": "Ozone 1-hr (1979 standard-revoked)",
"poi_slug": "air-quality-areas",
"geometry_kind": "area"
},
{
"id": "poi:air-quality-areas:air_quality_areas:9:38",
"feature_id": "air_quality_areas:9:38",
"name": "Raleigh-Durham Area · CO (1971 Standard) · NC",
"status": "Maintenance",
"state": "NC",
"category": "CO (1971 Standard)",
"poi_slug": "air-quality-areas",
"geometry_kind": "area"
}
]
},
"nearby": {
"superfund_npl": [
{
"id": "poi:superfund-npl-sites:superfund_npl:records:266",
"feature_id": "superfund_npl:records:266",
"name": "North Carolina State University (Lot 86, Farm Unit #1)",
"status": "NPL Site",
"state": "North Carolina",
"city": "Raleigh",
"category": "Superfund NPL sites",
"distance_km": 4.558660802921175,
"poi_slug": "superfund-npl-sites",
"geometry_kind": "point"
}
],
"brownfields": [
{
"id": "poi:brownfields:brownfields:records:5117",
"feature_id": "brownfields:records:5117",
"name": "FORMER TAO AUTO",
"state": "NC",
"city": "RALEIGH",
"category": "Brownfields",
"distance_km": 1.7380021755612463,
"poi_slug": "brownfields",
"geometry_kind": "point"
},
{
"id": "poi:brownfields:brownfields:records:3287",
"feature_id": "brownfields:records:3287",
"name": "301 HILLSBOROUGH STREET",
"state": "NC",
"city": "RALEIGH",
"category": "Brownfields",
"distance_km": 2.1790881613804753,
"poi_slug": "brownfields",
"geometry_kind": "point"
},
{
"id": "poi:brownfields:brownfields:records:11457",
"feature_id": "brownfields:records:11457",
"name": "PROPERTY 25",
"state": "NC",
"city": "RALEIGH",
"category": "Brownfields",
"distance_km": 2.19563822135326,
"poi_slug": "brownfields",
"geometry_kind": "point"
},
{
"id": "poi:brownfields:brownfields:records:4602",
"feature_id": "brownfields:records:4602",
"name": "0 WEST SOUTH STREET",
"state": "NC",
"city": "RALEIGH",
"category": "Brownfields",
"distance_km": 2.6141642491852357,
"poi_slug": "brownfields",
"geometry_kind": "point"
},
{
"id": "poi:brownfields:brownfields:records:3288",
"feature_id": "brownfields:records:3288",
"name": "CONVENTION CENTER PARKING LOTS",
"state": "NC",
"city": "RALEIGH",
"category": "Brownfields",
"distance_km": 2.772620723029745,
"poi_slug": "brownfields",
"geometry_kind": "point"
}
]
},
"coverage": {
"flood_hazard": {
"status": "unavailable",
"states": [],
"stale_states": [],
"note": "No published state package covers the reference point; coverage is unknown."
},
"wetlands": {
"status": "unavailable",
"states": [],
"stale_states": [],
"note": "No published state package covers the reference point; coverage is unknown."
}
},
"truncated": {
"brownfields": true
},
"note": "Screening at the supplied reference point, not a full parcel overlap analysis. Area and line matches intersect the published geometry at that point. Nearby cleanup records use reported point locations and straight-line distance. Source coverage and geometry limitations apply; absence of a match is not an environmental clearance. Flood hazard and wetland coverage at the point is reported under coverage: no intersecting polygon is unknown, never a finding that the point is outside a flood zone or wetland."
},
"provenance": [
{
"dataset": "superfund_sites",
"as_of": "2026-11-05",
"data_version": "20261105T023448534475Z"
},
{
"dataset": "superfund_npl",
"as_of": "2026-11-05",
"data_version": "20261105T023448534475Z"
},
{
"dataset": "brownfields",
"as_of": "2026-11-05",
"data_version": "20261105T023448534475Z"
},
{
"dataset": "protected_areas",
"as_of": "2025-03-31",
"data_version": "20261105T023448534475Z"
},
{
"dataset": "critical_habitat_areas",
"as_of": "2026-11-05",
"data_version": "20261105T023448534475Z"
}
]
}
},
"credits": {
"charged": 2,
"refunded": 0
},
"credits_url": "/v1/fields#attribution"
}County parcel data for land due diligence
Parcel coverage, infrastructure counts and example requests for counties where this work is common. Korzy covers parcel data in every U.S. county.
How Korzy compares with other parcel data APIs
More Korzy use cases
Put early diligence on autopilot
Run the same checks on every parcel in your pipeline through the API, or ask an AI assistant connected to the Korzy MCP server.