Get an API key

Solano County, CA parcel and infrastructure data API

Korzy has about 150,000 parcel records for Solano County, California, with source updates through October 2026. Nearly every record carries land use, year built and building size; 93% include values and 84% include last sale. In and around the county the API also maps 4 data-center projects (1 operating); about 35 power plants with about 1,400 MW of capacity, led by wind; and 1 port with reported cargo. Look up any parcel by address or coordinates, then check water, sewer and infrastructure context at the same point.

Get an API keyRead the API docs

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 /v1/records/{id}. Share of records with each field:

FieldCoverageShare
Situs addressNearly all · 98%
Owner nameNot published
Assessed or market valueMost · 93%
Year builtNearly all · 99%
Building sizeNearly all · 99%
Last saleMost · 84%
Land useNearly all · 99%
ZoningNot published

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

Infrastructure in and around Solano County

Power plants

About 35 operable plants with about 1,400 MW of nameplate capacity; largest by capacity: wind, natural gas, solar. Proposed generators add about 60 MW.

Within 50 km: /v1/lookup section power; details: /v1/records/{id}

Substations and transmission

About 50 in-service substations, about 10 rated 230 kV or higher.

About 570 miles of transmission lines: about 100 mi at under 100 kV; about 130 mi at 100–161 kV; about 230 mi at 220–287 kV; about 90 mi at 500 kV; about 15 mi at DC.

Water and sewer service

Service areas of about 35 community water systems cover about 17% of the county.

Sewer service areas of about 10 systems cover about 14%.

At an address or point: /v1/lookup section utilities

Data-center projects

4 tracked projects: 1 operating, 2 proposed, 1 status not reported. Reported planned capacity: about 150 MW.

Within 10 km: /v1/lookup section datacenters

Grid capacity data

11 utility-published grid capacity layers cover parts of Solano County, including load headroom, loading forecasts, substation inventory, planned grid projects, grid needs, large-load requests.

Nearby records: /v1/lookup section grid

Flood zones and wetlands

Special flood hazard areas cover about 36% of the county on the current federal flood maps, published October 2026.

Mapped wetlands cover about 12%.

At an address or point: /v1/lookup section environment

Rail, ports and freight

  • About 120 miles of active rail, about 80 of it main line
  • About 75 miles of national freight network highway
  • 1 port area with reported cargo tonnage

Within 25 km: /v1/lookup section logistics

Example requests for Solano County

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 4015 SUISUN VALLEY RD, FAIRFIELD, CA 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":"4015 SUISUN VALLEY RD, FAIRFIELD, CA","sections":["utilities"]}' \
  https://api.korzy.co/v1/lookup
Python
import os
import requests

response = requests.post(
    "https://api.korzy.co/v1/lookup",
    json={"address": "4015 SUISUN VALLEY RD, FAIRFIELD, CA", "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"])
Production response (trimmed)
{
  "location": {
    "longitude": -122.12648974082946,
    "latitude": 38.236051950000004,
    "address": "4015 SUISUN VALLEY RD, FAIRFIELD",
    "match_type": "exact"
  },
  "parcels": {
    "records": [
      {
        "id": "06095-69e3217137421ebeb010",
        "korzy_id": "06095-69e3217137421ebeb010",
        "parcelid": "0027391010",
        "parceladdr": "4015 SUISUN VALLEY RD",
        "parcelcity": "FAIRFIELD",
        "situs_zip": "94534",
        "statefp": "06",
        "geoid": "06095",
        "longitude": -122.12648974082946,
        "latitude": 38.236051950000004,
        "usedesc": "GENERAL OFFICE, MED., & DENT.",
        "yearbuilt": 1865,
        "bldgsqft": 6096,
        "taxacres": 3.07,
        "totalvalue": 1083806,
        "saledate": "1998-06-01",
        "updated": "2026-10-13"
      }
    ],
    "truncated": false
  },
  "sections": {
    "utilities": {
      "status": "ok",
      "data": {
        "water": [
          {
            "id": "utility:water:1149",
            "feature_id": "water:1149",
            "name": "CITY OF FAIRFIELD",
            "boundary_basis": "System Sourced"
          }
        ],
        "sewer": [
          {
            "id": "utility:sewer:4350",
            "feature_id": "sewer:4350",
            "name": "Fairfield-Suisun Sewer District",
            "boundary_basis": "Modeled"
          }
        ],
        "treatment_plants": [
          {
            "id": "utility:treatment:9340",
            "feature_id": "treatment:9340",
            "name": "Fairfield-Suisun Sewer District",
            "distance_km": 4.397159590052618
          },
          {
            "id": "utility:treatment:9337",
            "feature_id": "treatment:9337",
            "name": "NAPA SANIT. DIST WWRF",
            "distance_km": 13.78988312199891
          },
          {
            "id": "utility:treatment:14426",
            "feature_id": "treatment:14426",
            "name": "American Canyon WWTF",
            "distance_km": 14.047643431403456
          }
        ],
        "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 value and sale fields

/v1/enrich returns the fields you choose for up to 25 parcels per request; here the parcel 06095-69e3217137421ebeb010. 1 credit.

curl --fail-with-body -sS \
  -H "Authorization: Bearer $KORZY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"items":[{"korzy_id":"06095-69e3217137421ebeb010"}],"fields":["identity","value","sale"]}' \
  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 $KORZY_API_KEY" \
  https://api.korzy.co/v1/records/06095-69e3217137421ebeb010
JavaScript
const response = await fetch(`https://api.korzy.co/v1/records/${encodeURIComponent("06095-69e3217137421ebeb010")}`, {
  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);

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. A /v1/lookup with the datacenters section lists projects within 10 km of any address or 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%. A /v1/lookup with the utilities section returns the water and sewer matches at an address or point.

More featured counties

All featured California counties

Build on Solano County parcel data

Lookups, enrichment and records work the same in every county Korzy covers. Credits are shared across parcels, utilities, environment, logistics, power, grid, data-center and terrain sections.

Get an API keySee pricingAPI referenceUse cases for parcel and infrastructure data