Southeastern Connecticut Planning Region, CT parcel and infrastructure data API

Parcel coverage in Southeastern Connecticut Planning Region

About 120,000 parcel records with boundaries, situs addresses and parcel numbers, with the latest source update from October 2026. Each record has a stable korzy_id you can store and look up again with /api/parcel-record. Share of records with each field:

Owner name and mailing address are returned with include_owner=true, which doubles a request's cost: a parcel record costs 2 credits instead of 1. 64% of Southeastern Connecticut Planning Region records carry an owner name.

Infrastructure in and around Southeastern Connecticut Planning Region

Example requests for Southeastern Connecticut Planning Region

Real responses from the production API, trimmed to the main fields. Every request needs an API key with api:read; see authentication and credits and limits.

1. Find a parcel by address

/api/search matches 601 ROUTE 32, Montville, CT and returns the parcel's korzy_id, coordinates and record. 1 credit.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'q=601 ROUTE 32, Montville, CT' \
  https://api.korzy.co/api/search

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/search",
    params={"q": "601 ROUTE 32, Montville, CT"},
    headers={"Authorization": f"Bearer {os.environ['KORZY_API_KEY']}"},
    timeout=30,
)
response.raise_for_status()
parcel = response.json()["results"][0]
print(parcel["korzy_id"], parcel["longitude"], parcel["latitude"])

{
  "results": [
    {
      "korzy_id": "09180-e968ab55eb412f584daf",
      "address": "601 ROUTE 32",
      "city": "Montville",
      "postcode": "06382",
      "county": "Southeastern Connecticut",
      "statefp": "09",
      "longitude": -72.10438580478167,
      "latitude": 41.4418595,
      "match_type": "exact",
      "parcelid": "079-017-000",
      "parceladdr": "601 ROUTE 32",
      "parcelcity": "Montville",
      "situs_zip": "06382",
      "usedesc": "Commercial",
      "land_use_code": "200",
      "zoning_code": "C-2",
      "yearbuilt": 1961,
      "bldgsqft": 46011,
      "taxacres": 5,
      "totalvalue": 3675280,
      "land_value_usd": 449800,
      "improvement_value_usd": 4800600,
      "assessed_value_usd": 3755150,
      "saledate": "2015-10-02",
      "saleamt": 3500000,
      "updated": "2026-01-01",
      "geoid": "09180"
    }
  ],
  "truncated": false
}

With include_owner=true (2 credits) the record adds owner fields, shown here as placeholders:

{
  "owner_name": "EXAMPLE HOLDINGS LLC",
  "owner_mailing_address": "100 EXAMPLE ST, SAMPLE CITY, ST 00000"
}

2. Look up the parcel at a point

/api/query/point returns every parcel whose boundary covers the coordinates; here it returns the same record, 09180-e968ab55eb412f584daf, in records. 1 credit per 10 records requested.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'longitude=-72.104386' \
  --data-urlencode 'latitude=41.441859' \
  --data-urlencode 'limit=5' \
  https://api.korzy.co/api/query/point

const params = new URLSearchParams({"longitude": "-72.104386", "latitude": "41.441859", "limit": "5"});
const response = await fetch(`https://api.korzy.co/api/query/point?${params}`, {
  headers: { Authorization: `Bearer ${process.env.KORZY_API_KEY}` },
});
if (!response.ok) throw new Error(`Korzy API ${response.status}`);
const { records } = await response.json();
console.log(records.map((record) => record.korzy_id));

3. Check water and sewer service

/api/utilities/context returns the water and sewer service areas at the point and the nearest treatment plants. 1 credit.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'longitude=-72.104386' \
  --data-urlencode 'latitude=41.441859' \
  https://api.korzy.co/api/utilities/context

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/utilities/context",
    params={"longitude": "-72.104386", "latitude": "41.441859"},
    headers={"Authorization": f"Bearer {os.environ['KORZY_API_KEY']}"},
    timeout=30,
)
response.raise_for_status()
matches = response.json()["matches"]
print([area["name"] for area in matches["water"]])

{
  "longitude": -72.104386,
  "latitude": 41.441859,
  "matches": {
    "water": [
      {
        "feature_id": "water:35463",
        "name": "MONTVILLE WATER SUPPLY",
        "boundary_basis": "System Sourced"
      }
    ],
    "sewer": [
      {
        "feature_id": "sewer:162",
        "name": "MONTVILLE WPCF",
        "boundary_basis": "Sourced"
      }
    ]
  },
  "nearby_treatment": [
    {
      "feature_id": "treatment:634",
      "name": "MONTVILLE WPCF",
      "distance_km": 0.49424392143850493
    },
    {
      "feature_id": "treatment:646",
      "name": "NORWICH WPCF",
      "distance_km": 9.522195499880183
    }
  ]
}

Southeastern Connecticut Planning Region data questions

How many parcels in Southeastern Connecticut Planning Region include year built?

About 110,000 of about 120,000 parcel records (95%) include year built.

Does the Korzy API return owner names for Southeastern Connecticut Planning Region parcels?

Yes. 64% of Southeastern Connecticut Planning Region parcel records carry an owner name. Add include_owner=true to a point, search or parcel-record request; it doubles the request's cost, so a single parcel record costs 2 credits.

How many data-center projects are in Southeastern Connecticut Planning Region?

Korzy tracks 1 data-center project in Southeastern Connecticut Planning Region: 1 operating. /api/datacenters/context lists projects within 10 km of any point.

How much power generation is in Southeastern Connecticut Planning Region?

About 45 operable power plants in Southeastern Connecticut Planning Region total about 3,000 MW of nameplate capacity, mainly nuclear, oil and natural gas.

Which water systems serve Southeastern Connecticut Planning Region?

Service areas of about 85 community water systems cover about 19% of Southeastern Connecticut Planning Region, and sewer service areas cover about 9%. /api/utilities/context returns the water and sewer matches at a point.

More featured counties

• Capitol Planning Region, CTBorders Southeastern Connecticut Planning Region · about 360,000 parcels
• Naugatuck Valley Planning Region, CTabout 170,000 parcels
• Western Connecticut Planning Region, CTabout 180,000 parcels
• Greater Bridgeport Planning Region, CTabout 100,000 parcels
• South Central Connecticut Planning Region, CTabout 190,000 parcels

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