| Source | What it gives | Rows | Refresh |
|---|---|---|---|
| County appraisal districts (Harris, Dallas, Tarrant, Bexar, Travis and others) | Apartment buildings: name, address, units, year built, building size, owner on record | 21,140 apartment properties | Yearly roll; refreshed as districts publish |
| Texas Real Estate Commission, HOA management certificates (data.texas.gov 8auc-hzdi) | HOA name, county, management company, manager phone and email, recording date | 17,423 certificates, 15,745 HOAs | Weekly |
| Texas Comptroller, hotel occupancy tax permits (hdzd-884n) | Hotel name, address, permit holder, permit start date | 7,255 active hotels | Weekly |
| Texas Comptroller, active sales tax permits | Restaurant and multi-site operators and every location, first sales date | 36,242 locations | Monthly |
| HUD multifamily, USDA Rural Development 515, TDHCA | Assisted and insured apartment properties with their management agent | ≈2,900 Texas properties | Quarterly |
| Property and management-company websites | Managed-by evidence, published portfolios, office contacts, vendor requirements | Per property | Monthly |
| Brand store locators | Location lists for restaurant, fitness and salon brands | Per brand | Monthly |
Sources WhoRunsWhat does not use
Listing sites whose terms forbid scraping (for example Apartments.com, CoStar, LoopNet, Zillow, HAR.com and ApartmentRatings) and commercial contact databases whose terms ban resale. Crawling respects robots.txt, uses polite rates and never bypasses bot protection.