LADU MCP Server

Real ADU data for Los Angeles County, available to any MCP-compatible AI assistant.

Endpoint: https://www.ladu.co/mcp
Protocol: MCP JSON-RPC 2.0 (HTTP transport)
Auth: None — free, public, read-only
Docs: ladu.co/mcp-server

Quick start

Add to your MCP client config (Claude Desktop, Cursor, Cline, etc.):

{
  "mcpServers": {
    "ladu": {
      "url": "https://www.ladu.co/mcp"
    }
  }
}

No API key. No signup. Restart your client and the tools are available.

Tools

Example questions

Once connected, ask your AI assistant:

• "Can I build an ADU at 1234 Main St, Los Angeles?"
• "What are the ADU rules in Santa Monica vs. Pasadena?"
• "How much would a 600 sq ft detached ADU cost in Culver City?"
• "How many ADUs were permitted in LA County in 2024, and what's the trend?"
• "Are people building ADUs near 456 Oak Ave, Pasadena?"

Data

• Permit records: 19,000+ LA County ADU permits from public LA County Assessor and LA City/County Building & Safety records, deduplicated by case number, covering 2018–present
• Parcel data: ~2.4M LA County parcels with zoning, overlays, and regulatory facts
• City rules: Structured regulations for 51 LA-area jurisdictions

Methodology: stats.ladu.co/methodology

Privacy

The server returns property characteristics, zoning, regulations, and aggregate permit statistics. It never returns owner names, contact information, financial details, or mortgage data. It runs against a least-privilege read-only database role — private information is not reachable at the database level.

Rate limiting

Tool calls are rate-limited per client. The server returns HTTP 429 with a Retry-After header and a JSON-RPC -32000 error when the limit is reached.

Built by LADU — Los Angeles ADU specialists.