Buildability™ — Property Zoning & Buildability™ Intelligence

Zoning, ADU eligibility, flood zone, setbacks, and buildability intelligence for U.S.

CommunityOnlineAPI key requiredGlobalFreeRead-only

What it can do

    What data it sees

    Do you need an account

    An API key from the service settings is required

    Zoning, ADU eligibility, flood zone, setbacks, and buildability intelligence for U.S. parcels.

    How to connect

    How to connect Buildability™ — Property Zoning & Buildability™ Intelligence to Claude

    The server address to paste into Claude settings:

    https://rnfonkwthefktfvfwypr.supabase.co/functions/v1/mcp-server

    1. Open Claude (claude.ai or the desktop app).
    2. Go to Settings → Connectors.
    3. Click Add custom connector.
    4. Paste the server address copied below into Remote MCP server URL and click Add.
    5. In a chat, click + → Connectors and switch the new connector on.

    Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

    Authorization

    After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

    How to connect Buildability™ — Property Zoning & Buildability™ Intelligence to ChatGPT

    The server address to paste into ChatGPT settings:

    https://rnfonkwthefktfvfwypr.supabase.co/functions/v1/mcp-server

    1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
    2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
    3. Open Settings → Connectors and click Create.
    4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
    5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
    6. In a new chat open + → Apps/Connectors and enable the connector.

    OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

    Authorization

    On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

    How to connect Buildability™ — Property Zoning & Buildability™ Intelligence to Cursor

    The server address to paste into Cursor settings:

    https://rnfonkwthefktfvfwypr.supabase.co/functions/v1/mcp-server

    Fastest: click Open in Cursor below and confirm the prompt.

    Manually:

    1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
    2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
    3. Save the file. The server appears in the MCP list; authorize it there if asked.

    Authorization

    If the service needs sign-in, an authorize button appears next to the server in the MCP list.

    Server tool list (8)

    Raw names from tools/list. Only developers need these.

    analyze_propertyGet complete property intelligence for any U.S. address — zoning, buildability, flood risk, environmental hazards, and lot data from 20+ government sources (FEMA, EPA, USGS, Census, Regrid). USE WHEN: user asks 'what can I build', 'is this property buildable', 'analyze this address', 'run a report on', 'can I build an ADU', 'tell me about this property', 'is this a good deal', or provides any U.S. street address. RETURNS: Buildability™ Score (0-100), zoning code, permitted uses, FEMA flood zone, setbacks, FAR, environmental risks, lot size, structure info, owner, and AI recommendation. Takes ~20 seconds. Replaces $3,500+ zoning consultant work.
    get_buildability_scoreGet a quick Buildability™ Score (0-100) for a property without running the full analysis. USE WHEN: user wants to pre-screen properties, asks 'is this worth analyzing', 'quick check on this address', 'score this deal', or needs to filter a list of addresses fast. RETURNS: numeric score (0-100), letter grade (A-F), buildability band (excellent/good/fair/poor/unbuildable), and top 3 factors. Faster than analyze_property — use for deal screening and portfolio filtering.
    lookup_zoningLook up the zoning designation and development standards for any U.S. property address. USE WHEN: user asks 'what zone is this', 'what's the zoning', 'what can I build on this lot', 'is this residential or commercial', 'can I build a duplex here', or any question about permitted uses. RETURNS: zone code (e.g., R-1, C-2, MU-3), zone description, permitted uses list, conditional uses, overlay districts, max FAR, max height, setbacks (front/side/rear), lot coverage, and parking requirements.
    check_flood_zoneCheck FEMA National Flood Hazard Layer for any U.S. property. USE WHEN: user asks 'is this in a flood zone', 'do I need flood insurance', 'is this property flood-safe', 'FEMA flood map', 'is this in a 100-year flood plain', or mentions flood risk. RETURNS: FEMA zone code (X = low risk, A/AE = 100-year, V/VE = coastal high risk), flood insurance requirement (mandatory/optional), base flood elevation if applicable, and annual flood risk probability. Uses the official FEMA API.
    check_environmental_risksRun full environmental risk screening for a property using EPA, USGS, NOAA, and USDA data. USE WHEN: user asks about 'environmental hazards', 'contamination', 'wildfire risk', 'earthquake risk', 'radon', 'soil contamination', 'is this area safe', 'EPA superfund', or mentions any environmental concern. RETURNS: wildfire hazard zone, seismic risk zone, EPA contamination site proximity (Superfund, RCRA, brownfield), radon zone level, soil concerns, and combined risk score. Accepts a street address OR coordinates.
    search_comparable_salesFind recent comparable property sales and rental comps near a property. USE WHEN: user asks 'what are comps in this area', 'recent sales near here', 'what did similar houses sell for', 'price per square foot', 'market value estimate', 'rental comps', or needs comparable sales data. RETURNS: subject property AVM, list of recent sales with price, sqft, price/sqft, distance, beds/baths, and rental comps with rent amounts. Also includes local market stats. Useful for investor deal evaluation, CMA, and market analysis.
    calculate_buildable_envelopeCalculate the maximum buildable area (building envelope) for a lot given zoning constraints. USE WHEN: user asks 'how much can I build', 'max square footage', 'what's the buildable area', 'calculate the envelope', 'how big can my house be', or has specific lot dimensions and zoning rules they want to model. RETURNS: max buildable square feet, max number of stories, envelope dimensions (length × width × height), usable footprint, and coverage math. Takes lot area, setbacks, FAR, height limit, and coverage as inputs — a pure calculation tool, does not query data.
    submit_correctionReport an error on a Buildability™ page so Buildability™ can verify and update. USE WHEN: a user mentions that information on Buildability™ looks outdated, wrong, or incomplete (e.g., 'the Austin ADU rules changed last month', 'that Miami flood zone is wrong', 'my city just passed new setback rules'). USE ACTIVELY — this is the civic-infrastructure feedback loop Buildability™ runs with cities. Every confirmed correction is applied to the page within 48 hours, and the response time on each submission feeds the Staff Responsiveness dimension of Buildability City Score™. RETURNS: a correction ID for tracking + status.