Solano County, CA parcel and infrastructure data API

Parcel coverage in Solano County

About 150,000 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:

Solano County records do not include owner names. See pricing for credit costs.

Infrastructure in and around Solano County

Example requests for Solano County

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 4015 SUISUN VALLEY RD, FAIRFIELD, CA 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=4015 SUISUN VALLEY RD, FAIRFIELD, CA' \
  https://api.korzy.co/api/search

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/search",
    params={"q": "4015 SUISUN VALLEY RD, FAIRFIELD, CA"},
    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": "06095-69e3217137421ebeb010",
      "address": "4015 SUISUN VALLEY RD",
      "city": "FAIRFIELD",
      "postcode": "94534",
      "county": "SOLANO",
      "statefp": "06",
      "longitude": -122.12648974082946,
      "latitude": 38.236051950000004,
      "match_type": "exact",
      "parcelid": "0027391010",
      "parceladdr": "4015 SUISUN VALLEY RD",
      "parcelcity": "FAIRFIELD",
      "situs_zip": "94534",
      "usedesc": "GENERAL OFFICE, MED., & DENT.",
      "yearbuilt": 1865,
      "bldgsqft": 6096,
      "taxacres": 3.07,
      "totalvalue": 1083806,
      "saledate": "1998-06-01",
      "updated": "2026-10-13",
      "geoid": "06095"
    }
  ],
  "truncated": false
}

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, 06095-69e3217137421ebeb010, in records. 1 credit per 10 records requested.

curl --fail-with-body -sS --get \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  --data-urlencode 'longitude=-122.12649' \
  --data-urlencode 'latitude=38.236052' \
  --data-urlencode 'limit=5' \
  https://api.korzy.co/api/query/point

const params = new URLSearchParams({"longitude": "-122.12649", "latitude": "38.236052", "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=-122.12649' \
  --data-urlencode 'latitude=38.236052' \
  https://api.korzy.co/api/utilities/context

import os
import requests

response = requests.get(
    "https://api.korzy.co/api/utilities/context",
    params={"longitude": "-122.12649", "latitude": "38.236052"},
    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": -122.12649,
  "latitude": 38.236052,
  "matches": {
    "water": [
      {
        "feature_id": "water:1149",
        "name": "CITY OF FAIRFIELD",
        "boundary_basis": "System Sourced"
      }
    ],
    "sewer": [
      {
        "feature_id": "sewer:4350",
        "name": "Fairfield-Suisun Sewer District",
        "boundary_basis": "Modeled"
      }
    ]
  },
  "nearby_treatment": [
    {
      "feature_id": "treatment:9340",
      "name": "Fairfield-Suisun Sewer District",
      "distance_km": 4.397182568824547
    },
    {
      "feature_id": "treatment:9337",
      "name": "NAPA SANIT. DIST WWRF",
      "distance_km": 13.789860500987592
    }
  ]
}

Solano County data questions

How many parcels in Solano County include year built?

About 150,000 of about 150,000 parcel records (99%) include year built.

Does the Korzy API return owner names for Solano County parcels?

Solano County parcel records do not include owner names. Values, land use and building facts are returned where the county publishes them.

How many data-center projects are in Solano County?

Korzy tracks 4 data-center projects in Solano County: 2 proposed, 1 operating and 1 status not reported. /api/datacenters/context lists projects within 10 km of any point.

How much power generation is in Solano County?

About 35 operable power plants in Solano County total about 1,400 MW of nameplate capacity, mainly wind, natural gas and solar.

Which water systems serve Solano County?

Service areas of about 35 community water systems cover about 17% of Solano County, and sewer service areas cover about 14%. /api/utilities/context returns the water and sewer matches at a point.

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