National Property Records

One
Prompt
Away

Plug directly into Claude/ChatGPT or any AI tools you use. Get perfectly cited property records in seconds.

Try for Free For Developers

Claude Sonnet 5

MCP Connected

Give me the tax amount history since 2021 for 4504 MacArthur Boulevard

Quoin Graph: Queried 4504 MacArthur Blvd

Found it — SSL 1356 0861. Here's the data for 4504 MacArthur Blvd NW, Washington DC 20007 (SSL 1356 0861), owned by 4504 MacArthur Blvd NW LLC:

Property Tax History (2021–2026)

Tax Year	Annual Tax
2026	$11,925.50
2025	$12,159.34
2024	$11,874.08
2023	$11,442.54
2022	$10,669.30
2021	$10,094.26

Tax class is 1A (residential, tax rate 0.85), current balance due is $0.

Quick context: it's a 4-unit multi-family building (1937, renovated/effective year 1971), 3,500 sq ft, on 5,740 sq ft of land. Last sold Dec 2017 for $998,270 (unqualified sale).

The data you need.
Without the noise.

Taxes, Assessments, Sales & Permits

Access decades of transaction history, tax logs, building permits, and valuations in seconds. All cleaned, structured, and ready to query.

Zero Hallucinations

AI you can trust. Every data point includes the exact county source document, date, and a confidence score.

REST API

Build custom applications with millisecond latency.

Portfolio Tracking

Monitor assets across 3,143 Counties + DC instantly.

Plug into AI.
No coding required.

For real estate professionals, analysts, and underwriters.

Watch Setup Walkthrough

How to connect via MCP

Try for Free

Built for Builders.

Prefer to build your own agents? Our REST API delivers perfectly structured JSON payloads with 99.99% uptime. Native SDKs available for Python and Node.

Read API Docs

cURL

$ curl -X GET "https://api.quoindata.com/v1/properties/search" \
  -H "Authorization: Bearer YOUR_API_KEY"

{
  "data": [
    {
      "ssl": "1356 0861",
      "owner_name": "4504 MACARTHUR BLVD LLC",
      "true_owner": "John Doe",
      "assessed_value": 1403000
    }
  ]
}

The data you need.Without the noise.