Wenhao Yang

San Francisco (daily) + Los Angeles registered businesses (public open data): who's active, who just opened, who closed. Search by name / DBA / NAICS / ZIP / council district - B2B sales leads and new-business intelligence.

California cannabis license register (DCC, public data, ~20.9k licenses): active / expired / revoked status, storefront (BCC), cultivation (CCL) & manufacturing (MCSB) licenses. Search by license number, business, county, status, license type.

California county business licenses + fictitious business names (Sacramento Co + Sonoma Co public data, ~100k records): who just registered or is licensed in the county, with owner, industry activity, filing/expiry dates and new-opening lead flow. B2B sales leads & new-business intelligence.

California real estate license register (DRE, public data, 429k+ license rows): salespersons, brokers, and the corporations/officers behind them. Search by name, county or license type, or look up one license number for its full licensee profile (their own licenses + the companies they act for).

LA County unincorporated building & planning cases (EPIC-LA public data, 916k records): residential / commercial / multifamily / electrical / plumbing / mechanical / solar / pool / road permits with status, valuation, dates, AIN, ADU & affordable-housing flags.

California medical facilities (public open data): the licensed-facility register (~10.9k hospitals/SNF/home-health/hospice/clinics) with category, status, beds and ER level; CDPH enforcement actions (~20.5k) with penalty class and appeals; and licensed/certified locations with CCN/NPI.

San Francisco building permits (public open data, 1.3M records) - the city's full permit file with engineering depth (cost, use, units, ADU, occupancy, status, dates, neighborhood). Filter by type/status/ADU/address or pull the daily change stream.

San Francisco building Notices of Violation (public open data, 517k records): the code violation line items behind each notice - category, inspector finding, flagged conditions, parcel block+lot, address, district. Filter by status/category/block+lot/date or aggregate the register.

Two California county sheriff incident feeds in one actor - Marin County Sheriff Reported Crimes and Sonoma County Sheriff's Office Incident Data (383K incidents). Filter by county, city, incident type or date; aggregate by type, city or year. Both feeds are anonymous.

The US CFPB consumer complaint database (public open data, no key, 17.7M complaints): what consumers complained about and how the company answered - product, issue, company, narrative, company response, whether it was timely, and the state. Filter or aggregate.

Chicago business licenses (public open data, 1.2M records, full history since 2002): every license event with licensee and DBA, address / ward / community area, class, business activity and the application-to-expiration lifecycle. Filter by class/status/name/ward/date or pull the live slice.

City of Chicago awarded contracts and purchase orders (public open data, 186,177 awards, 89,067 PO numbers): vendor, award amount, contract and procurement type, department, approval dates and the contract PDF. Filter by vendor, department, type, amount or date.

Chicago building code violations (public open data, 2.03M records, daily): the violation code, description and ordinance, the inspector's comments, the inspection that produced it, and the property address with lat/lon. Filter by status/category/bureau/code/date or pull the daily change stream.

Cincinnati building permits (180,521, 2010 to today): type, work class and status as code and label, dates, address with PIN, and the company on the permit. A contacts mode adds the named owner, contractor and trade parties.

Colorado charitable-solicitation register (public open data): registration + annual financial filings for charities, paid solicitors and fundraising consultants - revenue/expense breakdown, year-end assets, program-service ratio, IRS exempt status, and the officers behind each organization.

Colorado professional and occupational licenses (public open data, 1.6M records, 40+ license types): the state's register of licensed nurses, physicians, engineers, CPAs and more - licensee, license number, status, first-issued / last-renewed / expiration dates, specialty and discipline.

Colorado UCC financing-statement register (public open data, 2.0M debtor records): the public record of secured claims on a business or person - debtor name and address, organization type and jurisdiction, the filing action (add / change / delete) and the record status.

Cook County assessment records keyed on one parcel id (public open data, 59.8M rows): a parcel's value as mailed, certified and Board-revised; every appeal case with type, status and reasons; and Board of Review decisions showing the Assessor's value against the Board's and the outcome.

Cook County Assessor parcel address file (public open data, 1.86M parcels per roll, 1999-2026): the owner of record AND the taxpayer of record, each with its full mailing address - they differ on 32.9% of parcels. Search by owner, taxpayer, city, ZIP or mailing state; find absentee owners.

2.69M recorded parcel sales in Cook County, Illinois (public open data, 1971-present): sale date, price, deed type, and BOTH named parties - seller (grantor) and buyer (grantee). Search by buyer, seller, PIN, township or price; filter to arms-length comparables; aggregate by class or township.

Connecticut's business register (1.3M companies) with its filing history, officers, registered agents and name changes: status, business type, NAICS, formation place, ownership flags and the dissolution reason, plus every filed document and the people behind the business - on one exact id.

Connecticut's statewide CAMA property roll (public open data, ~1.36M parcels, 153 municipalities): assessed and appraised values, owner and owner mailing address, structure attributes and the recorded sale. Filter by owner, city, town, state-use, valuation year or value.

Connecticut child care & youth camp licensing (public open data): three linked tables keyed by case id - violations (353k code findings), inspections (99k by type/status) and investigations (34k complaints). Pull a case's full chain, filter by provider/outcome, or aggregate.

All 2.67M Connecticut state credentials (public open data): every professional licence, business registration and brand registration the State issues. Holder name, credential type and number, issuing board, status, dates and address. Search by name, type, status, city or ZIP.