Naugatuck Valley Planning Region, CT parcel and infrastructure data API

Parcel coverage in Naugatuck Valley Planning Region

About 170,000 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 /v1/records/{id}. Share of records with each field:

Owner name and mailing address are returned by /v1/enrich with the owner group, at 2 credits per parcel instead of 1 credit. 19% of Naugatuck Valley Planning Region records carry an owner name.

Infrastructure in and around Naugatuck Valley Planning Region

Example requests for Naugatuck Valley Planning Region

The lookup response is a real production response, trimmed to the main fields. Every request needs an API key with api:read; see authentication and credits and limits.

1. Find a parcel and its water and sewer service

/v1/lookup matches 35 PORTER AVE, Naugatuck, CT and returns the parcel's korzy_id and record, plus the water and sewer service areas at the parcel 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":"35 PORTER AVE, Naugatuck, CT","sections":["utilities"]}' \
  https://api.korzy.co/v1/lookup

import os
import requests

response = requests.post(
    "https://api.korzy.co/v1/lookup",
    json={"address": "35 PORTER AVE, Naugatuck, CT", "sections": ["utilities"]},
    headers={"Authorization": f"Bearer {os.environ['KORZY_API_KEY']}"},
    timeout=60,
)
response.raise_for_status()
body = response.json()
parcel = body["parcels"]["records"][0]
print(parcel["korzy_id"], body["sections"]["utilities"]["status"])

{
  "location": {
    "longitude": -73.05761202686156,
    "latitude": 41.5068154,
    "address": "35 PORTER AVE, Naugatuck",
    "match_type": "exact"
  },
  "parcels": {
    "records": [
      {
        "id": "09140-daa367cbf3d8ad04de91",
        "korzy_id": "09140-daa367cbf3d8ad04de91",
        "parcelid": "32-103",
        "parceladdr": "35 PORTER AVE",
        "parcelcity": "Naugatuck",
        "situs_zip": "06770",
        "statefp": "09",
        "geoid": "09140",
        "longitude": -73.05761202686156,
        "latitude": 41.5068154,
        "usedesc": "Commercial",
        "land_use_code": "200",
        "zoning_code": "DD",
        "yearbuilt": 1970,
        "bldgsqft": 5348,
        "taxacres": 1,
        "totalvalue": 655690,
        "land_value_usd": 101800,
        "improvement_value_usd": 801800,
        "assessed_value_usd": 655690,
        "saledate": "2012-09-11",
        "saleamt": 359610,
        "updated": "2026-01-01"
      }
    ],
    "truncated": false
  },
  "sections": {
    "utilities": {
      "status": "ok",
      "data": {
        "water": [
          {
            "id": "utility:water:35140",
            "feature_id": "water:35140",
            "name": "CTWC - NAUGATUCK REGION-CENTRAL SYSTEM",
            "boundary_basis": "System Sourced"
          }
        ],
        "sewer": [
          {
            "id": "utility:sewer:163",
            "feature_id": "sewer:163",
            "name": "NAUGATUCK WPCF",
            "boundary_basis": "Sourced"
          }
        ],
        "treatment_plants": [
          {
            "id": "utility:treatment:677",
            "feature_id": "treatment:677",
            "name": "WATERBURY WPCF",
            "distance_km": 2.1499885465133763
          },
          {
            "id": "utility:treatment:635",
            "feature_id": "treatment:635",
            "name": "NAUGATUCK WPCF",
            "distance_km": 3.7711748790013386
          },
          {
            "id": "utility:treatment:597",
            "feature_id": "treatment:597",
            "name": "BEACON FALLS WPCF",
            "distance_km": 7.164568687261397
          }
        ],
        "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
  }
}

2. Add owner and sale fields

/v1/enrich returns the fields you choose for up to 25 parcels per request; here the parcel 09140-daa367cbf3d8ad04de91, with the owner group. 2 credits.

curl --fail-with-body -sS \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"items":[{"korzy_id":"09140-daa367cbf3d8ad04de91"}],"fields":["identity","sale","owner"]}' \
  https://api.korzy.co/v1/enrich

3. Fetch the record again by ID

/v1/records/{id} returns the stored parcel's full record, without owner fields. 1 credit.

curl --fail-with-body -sS \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  https://api.korzy.co/v1/records/09140-daa367cbf3d8ad04de91

const response = await fetch(`https://api.korzy.co/v1/records/${encodeURIComponent("09140-daa367cbf3d8ad04de91")}`, {
  headers: { Authorization: `Bearer ${process.env.KORZY_API_KEY}` },
});
if (!response.ok) throw new Error(`Korzy API ${response.status}`);
const { record } = await response.json();
console.log(record.parceladdr, record.usedesc);

Naugatuck Valley Planning Region data questions

How many parcels in Naugatuck Valley Planning Region include year built?

About 160,000 of about 170,000 parcel records (96%) include year built.

Does the Korzy API return owner names for Naugatuck Valley Planning Region parcels?

Yes. 19% of Naugatuck Valley Planning Region parcel records carry an owner name. Ask /v1/enrich for the owner group; each parcel then costs 2 credits instead of 1 credit. Lookups and records never include owner fields.

How many data-center projects are in Naugatuck Valley Planning Region?

Korzy tracks 3 data-center projects in Naugatuck Valley Planning Region: 2 proposed and 1 operating. A /v1/lookup with the datacenters section lists projects within 10 km of any address or point.

How much power generation is in Naugatuck Valley Planning Region?

About 15 operable power plants in Naugatuck Valley Planning Region total about 1,000 MW of nameplate capacity, mainly natural gas, battery and pumped storage and hydro.

Which water systems serve Naugatuck Valley Planning Region?

Service areas of about 45 community water systems cover about 40% of Naugatuck Valley Planning Region, and sewer service areas cover about 23%. A /v1/lookup with the utilities section returns the water and sewer matches at an address or point.

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