🏡 Open-Source Property Intelligence MCP Server

A 100% Free and Open-Source Model Context Protocol (MCP) Server for property and parcel intelligence. Powered exclusively by official public US government data APIs (USGS 3DEP Elevation, FEMA NFHL Flood Hazard REST API, USDA NRCS Soil Data Access API, EPA Facility Registry Service, USFS Active & Historical Wildfire APIs, USGS Earthquake Hazards API, US Census Bureau ACS API), open government land auctions, open county assessor GIS REST APIs, official County Recorder legal public records, FSBO portals, direct Redfin Stingray GIS APIs, and active API catalogue health diagnostics.

CRITICAL GUARANTEE: Zero paid APIs, commercial scrapers (Zillow, RentCast, RapidAPI), or subscription keys required. 100% free forever.

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🛠️ Features & Tools Supported

The server exposes 16 primary tools adhering strictly to MCP standards:

Tool Name	Parameters	Description
calculate_land_affordability	total_budget: float, estimated_site_prep: float	Calculates the maximum safe land purchase price based on budget and required site preparation (well, septic, driveway, power).
get_fema_hazard_zone	lat: float, lon: float	Queries official free FEMA Flood Hazard MapServer REST API for flood zone codes, Special Flood Hazard Area (SFHA) flags, and risk levels.
verify_tsunami_elevation	lat: float, lon: float	Queries free USGS 3DEP Elevation API to verify if parcel elevation meets or exceeds the 100-foot tsunami safety threshold.
get_usda_soil_survey	lat: float, lon: float	Queries official free USDA NRCS Soil Data Access API for soil composition, drainage class, hydric/wetland rating, and septic tank absorption field suitability.
check_epa_environmental_hazards	lat: float, lon: float, radius_miles: float = 5.0	Queries official free EPA Facility Registry Service API for nearby Superfund, Toxic Release Inventory (TRI), or hazardous industrial facilities.
get_wildfire_hazard_risk	lat: float, lon: float, radius_miles: float = 15.0	Queries official free USFS/NIFC WFIGS Wildfire REST APIs for active wildfire incidents AND historical wildfire perimeters, past burned acreage, and long-term hazard risk levels.
get_usgs_seismic_hazard	lat: float, lon: float, radius_km: float = 50.0, min_magnitude: float = 2.5	Queries official free USGS Earthquake Hazards FDSN API for historical and recent earthquake activity and seismic risk levels.
analyze_county_assessor_data	file_path: str, max_price: float, min_acres: float, require_direct_road_access: bool, require_public_utilities: bool	Parses local open county assessor CSV datasets to filter parcels by price, acreage, direct road frontage (excluding landlocked parcels), and public utilities.
rank_parcels_by_suitability	file_path: str, max_price: float, min_acres: float, require_direct_road_access: bool, require_public_utilities: bool, budget_weight: float, size_weight: float, road_weight: float, utility_weight: float	Multi-criteria parcel ranking engine that scores parcels 0 to 100 based on price/acre, budget compliance, acreage size, road frontage, and utilities.
fetch_live_land_listings	state: str = 'CA', min_acres: float, max_price: float, query: str, limit: int = 10	Fetches live active land and real estate listings from open public databases and government surplus property auctions with verified direct listing URLs.
fetch_county_parcels_online	state: str = 'CA', county: str, max_price: float, min_acres: float, require_direct_road_access: bool, require_public_utilities: bool, limit: int = 10	Automatically fetches county tax assessor parcel records online from open government GIS APIs without requiring manual CSV uploads.
search_redfin_gis_listings	location: str = 'Brookings, OR', property_type: str = 'land', min_acres: float, max_price: float, limit: int = 10	Direct HTTP query engine to Redfin Stingray GIS API endpoint. Fetches live active MLS listings in 0.3 seconds with zero browser automation required!
fetch_county_pre_foreclosures	state: str = 'CA', county: str, max_default_amount: float, min_acres: float, limit: int = 10	Queries official County Recorder / Register of Deeds public records for Notice of Default (NOD) and Notice of Trustee Sale (NTS) legal filings directly without going through Zillow.
fetch_fsbo_portal_listings	state: str = 'OR', county: str, min_acres: float, max_price: float, limit: int = 10	Fetches unrepresented private seller FSBO land & property listings directly from FSBO.com, ForSaleByOwner.com, and Craigslist Real Estate By Owner.
check_api_health_status	None	Probes all 11 external US Government APIs, auction portals, county GIS clearinghouses, and MLS endpoints live. Reports operational status, HTTP response codes, and round-trip latency in milliseconds.
fetch_historical_comps	address: str, lat: float, lon: float, radius_miles: float = 3.0, min_acres: float, max_acres: float, months_back: int = 24, property_type: str = 'land', limit: int = 10	Retrieves historical real estate & land sold comparable (comp) data using tiered open GIS APIs, public Redfin sold feeds (include_sold=true), and US Census Bureau ACS data. Returns summary metrics & price/acre.

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🚀 Setup & Installation

Prerequisites

• Python 3.10 or higher installed.

1. Set Up Virtual Environment

cd /path/to/property_mcp

# Create a virtual environment
python3 -m venv .venv
source .venv/bin/activate

# Install dependencies
pip install -r requirements.txt

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🧪 Running Tests

Verify all 20 tools using pytest:

.venv/bin/python -m pytest tests/

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💻 Registering with MCP Host (e.g. Antigravity Desktop / Claude Desktop)

Add the following configuration block to your configuration file:

{
  "mcpServers": {
    "property-intelligence": {
      "command": "/path/to/property_mcp/.venv/bin/python",
      "args": [
        "/path/to/property_mcp/server.py"
      ],
      "env": {}
    }
  }
}

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📊 Sample Usage

1. Retrieve Historical Sold Comps (Davenport, CA - 24 Months Lookback)

{
  "name": "fetch_historical_comps",
  "arguments": {
    "address": "Davenport, CA",
    "radius_miles": 5.0,
    "months_back": 24,
    "property_type": "land",
    "limit": 5
  }
}

2. Run Live API Health & Latency Diagnostic Dashboard

{
  "name": "check_api_health_status",
  "arguments": {}
}