Sources Stack Endpoints Pricing Docs Real Estate API vs RentCast vs Mashvisor
Get API Key → [email protected] 1-888-784-3881
POWERED BY PropTechUSA.ai 165+ CF WORKERS SUPABASE · KV EDGE <50MS GLOBALLY 80M+ PARCELS · 12 SOURCES JUSTIN ERICKSON
⚡ 80M+ Parcels · 14 Sources · FEMA Risk · Schools · Crime · Free Tier

Real estate
intelligence
+ API.

14 live data sources. 80M+ parcels. Rent trends. Sale prices. School quality scores. FEMA natural hazard risk (18 hazards). Community safety scores. Crime data. Poverty & unemployment rates. AI market analysis, deal memos, skip trace — and a live US risk heat map. The only real estate platform that tells you what a market looks like and whether it floods, burns, or has good schools. RentCast charges $120/mo for less. We charge $49. No per-call fees. Ship in an afternoon.

Get API key → vs RentCast
33K+ZIP Codes
<50msEdge Latency
80M+Parcels & Counting
14Live Data Sources
Live API — Try it now
LIVE
propdata-api-worker.sales-fd3.workers.dev/v1/market?zip=55101
// PropData API — Live demo // Fetching market data for 55101... █
165+ CF Workers KV Edge Cache Supabase Zillow ZORI Realtor.com Redfin HUD FMR Census ACS FHFA HPI FRED
Data Sources

Fourteen sources.
Three built in-house.
One response.

PropData aggregates 14 live sources — including our own direct-ingest pipeline of 80M+ county assessor parcels across 20+ states. Owner names, mailing addresses, assessed values, last sale prices, year built, bedrooms. The same public source ATTOM and CoreLogic license — except we built the pipes ourselves. Plus Zillow ZORI, Realtor.com, Redfin, HUD FMR, Census ACS, FHFA HPI, FRED, and a proprietary Estimate Engine. All at $49/mo flat.

SOURCE 01

Fair Market Rents

U.S. Dept. of Housing & Urban Development

The government's official rent benchmark — the same data used to set Section 8 voucher amounts. Every county in America. Studio through 4-bedroom. Ground truth for affordability analysis.

STUDIO→4BRCOUNTY-LEVELFREE GOVT DATA
SOURCE 02

Observed Rent Index

Zillow Research

ZORI — Zillow's smoothed median asking rent for all homes and multifamily. The most cited rent trend dataset in real estate. ZIP, metro, state, and national with 10 years of history.

MEDIAN RENTYOYMOMZIP-LEVEL10 YR HISTORY
SOURCE 03

Market Metrics

Realtor.com Research

Monthly listing data: median prices, days on market, active inventory, new listings, price reductions, price per sqft. The pulse of the for-sale market at ZIP level.

DOMPRICE/SQFTINVENTORYPRICE CUTS
SOURCE 04

Market Tracker

Redfin

Sale-to-list ratio, % sold above list, days to pending, months of supply. The sharpest demand signal in public real estate data.

SALE/LIST RATIO% ABOVE LISTDAYS TO PENDING
SOURCE 05

ACS Demographics

US Census Bureau

Vacancy rates, renter %, median income, rent-to-income ratio, poverty rate, unemployment. Affordability context nobody else includes at this price point.

VACANCY RATERENTER %POVERTY RATEUNEMPLOYMENT
SOURCE 06

FRED Macro Data

Federal Reserve Bank of St. Louis

Mortgage rates, shelter inflation, national vacancy rate, and housing starts. National economic context alongside local market data.

MORTGAGE RATESSHELTER CPIHOUSING STARTS
SOURCE 07

House Price Index

FHFA — Federal Housing Finance Agency

Quarterly home price appreciation by state and metro. The definitive government measure of home value change — used by mortgage lenders, Fed economists, and institutional investors.

HPI APPRECIATIONSTATE + METROQUARTERLY
SOURCE 08

Building Permits

US Census Bureau BPS

Monthly new construction by unit type. The forward-looking supply signal — permits today become inventory in 12-18 months. Predicts rent pressure before it shows up in listing data.

SINGLE FAMILYMULTIFAMILYSUPPLY SIGNAL
SOURCE 09 — PROPRIETARY

PropData Estimate Engine

PropTechUSA.ai

Weighted rent estimate model built on owned data. ZORI (40%) + Census ACS (25%) + HUD FMR (20%) + Redfin cap rate (15%). Returns low/mid/high range with confidence score. No third-party dependency.

RENT ESTIMATESBEDROOM-LEVELCONFIDENCE SCOREOWN ENGINE
SOURCE 10 — OWN PIPELINE

County Assessor Records

PropTechUSA.ai Direct Ingest

We built the pipeline. 80M+ parcel records ingested directly from public ArcGIS layers — the same source ATTOM and CoreLogic buy from. Owner names, mailing addresses, assessed values, last sale price, year built, bedrooms. We don't license this. We built it.

80M+ PARCELS20+ STATESOWNER NAMEASSESSED VALUELAST SALEOWN PIPELINE
SOURCE 11 — PROPRIETARY

Comps Engine

PropTechUSA.ai Built

Comparable sales engine built on our 80M+ parcel database. Ranked comps scored on price, sqft, recency, and bedroom count. Low/mid/high range + avg price per sqft. What ATTOM charges $2,000/mo for.

COMPARABLE SALESSIMILARITY SCOREPRICE/SQFTOWN ENGINE
SOURCE 12 — PROPRIETARY

Geocoder

PropTechUSA.ai Built

Address resolution built on our county assessor parcel database. Converts any US address to lat/lng, ZIP, county, state, and FIPS codes. No third-party dependency — our data, our infrastructure.

ADDRESS TO LAT/LNGCOUNTY FIPS20+ STATESOWN ENGINE
SOURCE 13 — LIVE · NEW

Natural Hazard Risk Index

FEMA — National Risk Index v1.20

18 natural hazard risk scores by county — wildfire, flood, hurricane, tornado, earthquake, hail, heat wave, drought, winter weather, and 9 more. Per-capita annualized loss rate percentiles so you're not comparing Maricopa County to rural Kansas unfairly. The same dataset FEMA uses to allocate disaster preparedness funds. Visualized on a live US heat map. Now inside your API call.

WILDFIRE FLOOD HURRICANE TORNADO EARTHQUAKE HEAT WAVE DROUGHT 18 TOTAL HAZARDS COUNTY-LEVEL PER-CAPITA PERCENTILE LIVE US HEAT MAP
SOURCE 14 — LIVE · NEW

Community Safety Score

NCES · Census ACS · FBI CDE · FEMA SOVI

Composite A–F grade combining school quality (100K+ schools), poverty, unemployment, social vulnerability, resilience, and crime. The due-diligence data institutional investors pay $10K/yr for.

SCHOOL QUALITY POVERTY RATE CRIME RATE A–F GRADE ZIP-LEVEL AI NARRATIVE
Infrastructure

Built on Cloudflare.
Own data pipeline.
Zero cold starts.

PropData runs on 10+ dedicated Cloudflare Workers with a shared KV cache and Supabase backend. Every ingestion worker runs on its own cron — HUD weekly, ZORI and Realtor monthly. Data is cached at the edge and served in under 50ms anywhere in the world. This is the same infrastructure stack powering PropTechUSA.ai's 165+ production Workers.

🏗️

PropTechUSA.ai Infrastructure

PropData runs on 10+ dedicated Workers inside PropTechUSA.ai's 165+ Worker production stack — the same infrastructure powering IntelligentHomeBuying, IntelligentLandlord, and LHBUSA. No monolith. Pure edge.

DEPLOYED + LIVE
⚡

KV Edge Cache

All market data cached at Cloudflare's edge. 7-day TTL. Sub-50ms reads globally.

031d6a9e — ACTIVE
🗄️

Supabase Canonical Store

15+ normalized tables. ZORI, Realtor, Redfin, HUD FMR, Census ACS, FHFA HPI — ZIP, state, and metro tiers. Indexed for fast queries.

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🔐

API Key Auth + Rate Limiting

Tiered access. Free 50/hr, Pro 500/hr, Internal unlimited. Keys provisioned in KV instantly.

STRIPE INTEGRATED
PropData — Built on PropTechUSA.ai's 165+ Worker Stack
HUD APIWeekly cron→Zillow S3Monthly CSV→Realtor + RedfinMonthly TSV→Census + FHFAAnnual / Quarterly→FRED APIWeekly live→ArcGIS Ingest80M+ parcels · Own pipeline→Ingestion WorkersNormalize + upsert→SupabaseCanonical store→KV CacheEdge — 7d TTL→propdata APIYour API key→Your App<50ms→HUD APIWeekly cron→Zillow S3Monthly CSV→Realtor + RedfinMonthly TSV→Census + FHFAAnnual / Quarterly→FRED APIWeekly live→ArcGIS Ingest80M+ parcels · Own pipeline→Ingestion WorkersNormalize + upsert→SupabaseCanonical store→KV CacheEdge — 7d TTL→propdata APIYour API key→Your App<50ms
What You Get

Merged data.
Computed signals.

Every /v1/market response includes rent data, market velocity, affordability, FRED macro, and computed investor signals — all merged from 14 live sources. Add /v1/property to get owner names, assessed values, and last sale history direct from county assessor records. ATTOM charges $2,000/mo for a fraction of this. You pay $49.

Est. Gross Yield6.8%
Rent Growth YoY+4.1%
Market VelocityFast — 24 days DOM
Inventory PressureLow — down 14% YoY
Selling Above List101.8% sale/list
Vacancy RateVery Tight — 3.2%
Rent Burden28% of income
Endpoints
GET/v1/marketFull profile
?zip=55101 | ?state=MN | ?metro=Minneapolis
Rent + listing + signals — one response
GET/v1/rentRent only
HUD FMR by bedroom + ZORI median asking rent
Fastest endpoint for rent-focused apps
GET/v1/listingMarket data
DOM, inventory, price/sqft, price cuts, new listings
For-sale market pulse at ZIP level
GET/v1/healthStatus
Source status + last ingestion timestamps for all workers
GET/v1/geocodeAddress to lat/lng
?address=337+NW+86th+St+Seattle+WA · lat · lng · zip · county · FIPS
GET/v1/compsComparable sales
?address=... | ?parcel=... · Ranked comps · similarity scores · price/sqft
GET/v1/estimateRent estimate — Pro
?zip=55101&beds=2 | ?state=MN&beds=3
Proprietary weighted model · low/mid/high range + confidence score
GET/v1/propertySkip trace — owner lookup
?address=337+NW+86th+St+Seattle+WA | ?zip=98117
Owner name · mailing address · assessed value · last sale · 80M+ parcels
GET/v1/geocodeAddress → coordinates
?address=337+NW+86th+St+Seattle+WA+98117
lat · lng · ZIP · county · state · FIPS — feed into /v1/property or /v1/market
GET/v1/neighborhoodNeighborhood profile
?zip=98117
Density · walkability · surrounding market signals
GET/v1/statsLive parcel count
No auth required
Total parcels indexed · breakdown by state
API REFERENCE — v1

Build anything.
Ship fast.

One endpoint. 14 live data sources. 50M+ parcels indexed. Proprietary estimate engine. Zero per-call fees. Everything you need to build institutional-grade real estate tooling.

BASE URL
https://propdata-api-worker
.sales-fd3.workers.dev
CONTENT TYPE
application/json
🔑

AUTHENTICATION

Every request requires your API key. Pass it as a header (recommended) or query parameter.

HEADER (RECOMMENDED)
x-api-key: pd_free_YOUR_KEY
QUERY PARAMETER
?api_key=pd_free_YOUR_KEY
⚡

ENDPOINTS

GET /v1/market Full market profile — rent + market + affordability + signals 14 live sources
PARAMETERS
zip5-digit ZIP code — e.g. 55101
state2-letter code — e.g. MN, TX, FL
metroMetro name — e.g. Minneapolis
monthsHistory depth, default 12
RESPONSE SHAPE
snapshot.rent → ZORI + HUD FMR
snapshot.market → Realtor + Redfin + FHFA
snapshot.affordability → Census ACS
snapshot.signals → 8 computed signals
macro → FRED (mortgage, CPI, starts)
history.rent_trend → 12mo ZORI
history.market_trend → 12mo Realtor
sources → 9 attribution labels
# by ZIP
GET /v1/market?zip=55101
# by state
GET /v1/market?state=MN
# by metro
GET /v1/market?metro=Minneapolis
# with history depth
GET /v1/market?state=TX&months=24
GET /v1/rent Rent-only — ZORI median asking rent + HUD FMR by bedroom lighter + faster
GET /v1/rent?zip=55101 # same params: zip | state | metro
GET /v1/estimate Proprietary rent estimate — weighted model, 4 sources Pro
GET /v1/estimate?zip=55101&beds=2 # 0=studio 1 2 3 4
GET /v1/estimate?state=MN&beds=3
Returns: monthly_low / monthly_mid / monthly_high + confidence_pct + market_trend
Model: ZORI 40% · Census ACS 25% · HUD FMR 20% · Redfin cap rate 15%
GET /v1/health System status + last ingestion timestamps for all workers no auth
GET /v1/health # no API key required
{'}'}

CODE EXAMPLES

const res = await fetch(
  'https://propdata-api-worker
   .sales-fd3.workers.dev/v1/market
   ?state=MN',
  { headers: {
    'x-api-key': 'YOUR_KEY'
  } }
);
const data = await res.json();
// data.snapshot.market.hpi_1yr_chg
// data.snapshot.signals[0].value
📊

RATE LIMITS

TIERREQ/HRPRICE
Free 50 $0/mo
Pro popular 500 $49/mo
Enterprise ∞ Custom

ERROR CODES

401 Invalid or missing API key
404 No data for this location
429 Rate limit exceeded — upgrade to Pro
500 Server error — contact support
READY TO BUILD?

Get your API key in 10 seconds.

Free tier. No credit card. No BS.

PropData vs The Market

The only API that gives you
data AND intelligence.

→ Read the full RentCast comparison + cost calculator

RentCast is a rent lookup. ATTOM and CoreLogic are enterprise contracts with sales calls and procurement. PropData is the only API at any price point that bundles live mortgage rates, vacancy data, investor signals, and a proprietary rent estimate engine — with a free tier, no credit card, no per-call fees. Ever.

Feature PropData RentCast ATTOM CoreLogic
PricingFlat $49/moPer call$500+/mo$1,000+/mo
At 10,000 calls/month$49 flat$100–500$500+$1,000+
Free tier — no credit card✓———
No per-call fees ever✓———
MARKET DATA
Rent by bedroom (HUD FMR)✓✓——
Median asking rent trend (ZORI)✓✓✓✓
Days on market + inventory (Realtor.com)✓—✓✓
Sale-to-list ratio (Redfin)✓—✓✓
Affordability data (Census ACS)✓—✓✓
Home price appreciation (FHFA HPI)✓—✓✓
FRED macro data (mortgage rates, shelter CPI)✓ Exclusive———
AI investor signals (computed)✓ Exclusive———
Proprietary rent estimate engine✓✓✓✓
ZIP + State + Metro coverage✓✓✓✓
OWN PIPELINE
County Assessor Records80M+ Own Pipeline—LicensedLicensed
Geocoder (address → lat/lng)✓ /v1/geocode———
Comparable sales engine✓ /v1/comps—$2K+/mo$2K+/mo
🔒 NOBODY ELSE HAS THIS
FEMA Natural Hazard Risk (18 hazards)✓ Exclusive———
Wildfire risk score (county-level)✓ Exclusive———
Flood risk score (county-level)✓ Exclusive———
Hurricane + tornado risk scores✓ Exclusive———
Community Safety Score (A–F)✓ Exclusive———
School district quality (NCES)✓ Exclusive———
Poverty + unemployment rate (ZIP-level)✓ Exclusive———
Crime data (FBI CDE)✓ Launching soon—Add-onAdd-on
Live US heat map (14 layers)✓ Exclusive———
AI Market Analysis + Deal Memo✓ Exclusive———
12-month Market Forecast Engine✓ Exclusive———
Pricing

Simple pricing.
No surprises.

Flat monthly access. Your API key is live the moment you sign up. No credit card required for the free tier. Cancel pro anytime. Enterprise gets direct founder access.

Starter
$0
free forever
  • 50 requests per hour
  • All endpoints
  • ZIP, state, metro queries
  • Investor signals included
  • No SLA guarantee
  • Community support
Pro
$49
per month
  • 500 requests per hour
  • All endpoints
  • 36 months of history
  • Investor signals
  • Email support
  • Cancel anytime
Property Pro
$99
per month
  • Everything in Pro
  • County assessor data
  • Owner name + address
  • Assessed & market values
  • Last sale price + date
  • Skip trace lookup
  • Delinquent tax filter
  • Bulk ZIP export
Enterprise
$—
custom
  • Unlimited requests
  • White-label available
  • Custom data sources
  • SLA + dedicated support
  • PropTechUSA.ai integration
  • Direct founder access
Contact us →
PROPRIETARY — SOURCE 09

The only rent estimate
you actually understand.

Every other rent estimate API gives you a number and no explanation. PropData shows you exactly how it was calculated — four sources, explicit weights, full confidence score. You own the logic. You can explain it to any client or investor.

40%
Zillow ZORI — actual market asking rents
25%
Census ACS — all occupied rentals, not just listed
20%
HUD FMR — government bedroom-level benchmark
15%
Redfin cap rate model — implied rent from sale prices
Get the estimate engine →
BUILT WITH THIS
🏠 Rental pricing tools for landlord software
🤖 AI agents that explain rent to buyers
📊 Investment screeners across all 50 states
/v1/estimate?state=MN&beds=2
// Proprietary rent estimate — MN, 2BR
"estimate": {
"bedrooms": 2,
"monthly_low": 1288,
"monthly_mid": 1400,
"monthly_high": 1512,
"confidence_pct": 100,
"market_trend": "stable",
"yoy_rent_change": "+3.98%"
},
"sources_used": 4,
"model": "PropData Weighted Multi-Source"
USE CASES

What developers build
with PropData.

One API key. Twelve sources. Owner names, assessed values, rent trends — the complete data layer for the next generation of real estate tools.

🏠

Rental Pricing Tools

Call /v1/estimate with any ZIP + bedroom count to get low/mid/high rent ranges with confidence scores. Build the pricing feature your landlord software is missing.

ESTIMATE ENGINE + HUD FMR
📊

Investment Screeners

Pull gross yield, vacancy rate, rent-to-income ratio, and DOM for any market. Screen 50 states in 50 API calls. Find the markets worth underwriting before your competitors do.

ZORI + REDFIN + CENSUS + FHFA
🤖

AI Real Estate Agents

Feed PropData into your LLM context. Give your AI the same market intelligence a top broker uses — rent trends, DOM, affordability, macro rates — in one structured JSON call.

ALL 14 SOURCES + SIGNALS
📱

Market Report Apps

One call to /v1/market gives you a full market report — 12 months of history, signals, macro context. Build the neighborhood report card nobody else has.

REALTOR + REDFIN + FRED
💼

Mortgage & Affordability Tools

Combine live 30yr mortgage rates from FRED with median list prices, vacancy rates, and median income. Build the buy-vs-rent calculator that actually uses current data.

FRED + CENSUS + FHFA
🏗️

Supply Pipeline Signals

Housing starts surging? Permits up? Cross-reference with local vacancy and DOM to predict where rent growth is heading 12-18 months out. Data no other $49/mo API touches.

FRED + CENSUS PERMITS + FHFA
🗺️

Section 8 & Voucher Tools

HUD Fair Market Rents by bedroom for every county — the exact data used to set Section 8 voucher amounts. Build compliance tools, subsidy calculators, or affordable housing screeners.

HUD FMR — EVERY COUNTY
📰

Real Estate Newsletters

Automate your weekly market update. Hit PropData on a cron, get fresh rent trends, DOM, inventory changes, and macro context — format it and send. Institutional-grade data in every issue.

ZORI + REALTOR + FRED
⚡

Your idea here.

If it needs real estate market data, PropData can power it. Free key in 10 seconds. No credit card.

RentCast licenses public data.
ATTOM resells it at $2,000/mo.
We built the pipeline. $49/mo.

The only API with rent data, market velocity, and county assessor records — owner names, assessed values, skip trace — all at $49/mo flat. Built by Justin Erickson / PropTechUSA.ai. The data ATTOM charges $2,000/mo for. Free tier, no credit card. 165+ Cloudflare Workers in production.

Talk to us
PROPDATA DASHBOARD — LIVE
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API Key SHOW
pd_••••••••••••
Header
x-api-key
Param
?api_key=
Base URL
propdata-api-worker.sales-fd3.workers.dev
Usage This Hour
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0% used
Quick Start
const res = await fetch(
 \`${API_BASE}/v1/market
  ?zip=55101\`,
 { headers: {
  'x-api-key': 'YOUR_KEY'
 } }
);
const data = await res.json();
Resources
API Docs → vs RentCast → RapidAPI Listing ↗ Support ✉
API Playground
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PATH 
// Enter a ZIP code or state above and hit Run →
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