8 Cities Live • 4M+ Parcels Indexed

Before you analyze NYC sites,
run them through ZoneLens.

ZoneLens screens NYC parcels for zoning risk, dead-end detection, and approval friction in minutes — not weeks. Eliminate 25-40% of candidate sites as NO-GO before you spend on due diligence. Automated GO/REVIEW/NO_GO classification across 8 US cities.

Explore the Map Start Screening API Docs

LIVE CITIES

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Example API Response GET /api/v1/envelope/1008720030?city=nyc

{
  "parcel_id": "1008720030",
  "city": "nyc",
  "zoning_district": "R6B",
  "buildable_sqft": 3400,
  "max_height_ft": 55,
  "lot_coverage_pct": 65,
  "setbacks": {
    "front_ft": 10,
    "side_ft": 8,
    "rear_ft": 30
  },
  "far_base": 2.0,
  "overlays": [],
  "envelope_geojson": { "type": "Polygon", "..." }
}

Why ZoneLens?

🔍

Site Screening

Batch-screen parcels with composite scoring and automated ranking. Process entire portfolios and surface the strongest candidates.

⚠️

Risk Analysis

Six risk categories, dead-end detection, and approval friction scoring help you identify obstacles before they become costly surprises.

✅

GO / REVIEW / NO_GO

Deterministic classification for every screened parcel. Transparent logic, confidence-scored, and overridable when your team has local context.

🌐

Cross-City Comparison

Normalized zoning data across 8 cities lets you compare districts, entitlements, and feasibility side by side.

🗺️

Interactive Map

4M+ parcels rendered via vector tiles. Search by zoning family, lot size, FAR, and flood zone. Add parcels to projects directly from the map.

📄

Export & Audit

Download screening results as CSV, PDF, JSON, or Markdown. Every decision includes a full audit trail with citations and provenance.

Real NYC Screening Examples

Every example below uses real NYC parcel data from ZoneLens.

GO — R6 Residential

Parcel 3056840059 in an R6 district. Residential use is by-right, no overlays, no special permits. Confidence: 0.85, approval difficulty: 12. Result: GO — proceed to detailed due diligence.

REVIEW — C6-9 Commercial

Parcel 1000550016 in a C6-9 district. High-density commercial appears feasible but carries moderate approval friction due to discretionary review processes. Result: REVIEW — viable but needs closer analysis.

NO-GO — M1-1 Manufacturing

Parcel 2047530102 in an M1-1 manufacturing district screened for residential use. Dead-end detected: residential is prohibited in M1-1 manufacturing zones. Result: NO_GO — saved weeks of wasted due diligence.

Quick Start

Python

JavaScript

cURL

import requests

# Get your API key at https://zonelens.dev/signup
API_KEY = "your_api_key_here"
BASE_URL = "http://localhost:8000/api/v1"

headers = {"X-API-Key": API_KEY}

# Get zoning rules for a NYC parcel
response = requests.get(
    f"{BASE_URL}/zoning/1008720030",
    params={"city": "nyc"},
    headers=headers
)

zoning = response.json()
print(f"District: {zoning['zoning_district']}")
print(f"Base FAR: {zoning['far_base']}")
print(f"Height Limit: {zoning['height_limit_ft']} ft")

# Batch process multiple parcels
batch_response = requests.post(
    f"{BASE_URL}/batch",
    headers=headers,
    json={
        "parcels": [
            {"parcel_id": "1008720030", "city": "nyc", "endpoints": ["zoning", "envelope"]},
            {"parcel_id": "5149-021-001", "city": "la", "endpoints": ["zoning", "feasibility"]}
        ]
    }
)

results = batch_response.json()
print(f"Processed {results['total']} parcels in {results['processing_time_ms']}ms")

// Get your API key at https://zonelens.dev/signup
const API_KEY = "your_api_key_here";
const BASE_URL = "http://localhost:8000/api/v1";

const headers = {
  "X-API-Key": API_KEY,
  "Content-Type": "application/json"
};

// Get zoning rules for a NYC parcel
const response = await fetch(
  `${BASE_URL}/zoning/1008720030?city=nyc`,
  { headers }
);

const zoning = await response.json();
console.log(`District: ${zoning.zoning_district}`);
console.log(`Base FAR: ${zoning.far_base}`);
console.log(`Height Limit: ${zoning.height_limit_ft} ft`);

// Batch process multiple parcels
const batchResponse = await fetch(
  `${BASE_URL}/batch`,
  {
    method: "POST",
    headers,
    body: JSON.stringify({
      parcels: [
        { parcel_id: "1008720030", city: "nyc", endpoints: ["zoning", "envelope"] },
        { parcel_id: "5149-021-001", city: "la", endpoints: ["zoning", "feasibility"] }
      ]
    })
  }
);

const results = await batchResponse.json();
console.log(`Processed ${results.total} parcels in ${results.processing_time_ms}ms`);

# Get your API key at https://zonelens.dev/signup
API_KEY="your_api_key_here"
BASE_URL="http://localhost:8000/api/v1"

# Get zoning rules for a NYC parcel
curl -X GET "$BASE_URL/zoning/1008720030?city=nyc" \
  -H "X-API-Key: $API_KEY"

# Get buildable envelope
curl -X GET "$BASE_URL/envelope/1008720030?city=nyc" \
  -H "X-API-Key: $API_KEY"

# Batch process multiple parcels
curl -X POST "$BASE_URL/batch" \
  -H "X-API-Key: $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "parcels": [
      {"parcel_id": "1008720030", "city": "nyc", "endpoints": ["zoning", "envelope"]},
      {"parcel_id": "5149-021-001", "city": "la", "endpoints": ["zoning", "feasibility"]}
    ]
  }'

Simple, Transparent Pricing

Explorer

5 parcels/month

• Zoning + constraint detection
• Feasibility snapshot
• 1 city
• Community support

Get Started Free

POPULAR

Professional

$99

500 parcels/month

• Full screening engine
• Exports + comparison
• 2 cities (+$39/ea extra)
• Email support

Start 7-Day Free Trial

Team

$299

2,000 parcels/month

• Batch screening
• Team workspaces
• 5 cities (+$29/ea extra)
• Priority support