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.

Anonymous police incident feeds for SF, Oakland & LA (public data): crimes happening, where, recent trends. Filter by category/area/date/keyword; LA adds NIBRS flags (DV/hate/gang/victim-shot). For underwriting & safety analysis.

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.

SF restaurant / food-facility inspection history (public data, 2016-present, ~126k records): pass / conditional / closure, violation codes + text, scores, risk. Compliance & closure diligence for franchise / restaurant buyers.

California Grants Portal (data.ca.gov, public): ~1,994 state/local grant programs ever listed + post-award disclosures per fiscal year. Find money open right now - filter ~169 active grants by agency / category / applicant type / deadline; research who won what.

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.

California oil & gas / geothermal well register (public CalGEM data, ~242k wells): status (active/idle/plugged), well type, operator, county, field, HPZ, location. Due-diligence for environmental & mineral-rights research. Filter by county, operator, status, API number.

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 building permits (public open data, 846k records, live): the city's full permit register with the contractor / owner / architect behind each job, the fee schedule and reported cost, and the application-to-issue timeline. Filter by type/status/contractor/cost/ward.

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.

Colorado business-entity register (public open data, 3.1M entities + 21.6M filings): a company's status, type, addresses and registered agent, plus its complete Secretary-of-State filing history on one exact entity id - name changes, redomestications, dissolutions.

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 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.

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.

US truck & bus carrier records (FMCSA open data, 4.5M carriers): registry details, inspection history, violations, SMS BASIC safety categories, operating authority, out-of-service orders and revocations - all keyed to the DOT number. Filter by DOT/MC, state or fleet size.

Baltimore City environmental-code violation citations (~150.8k, open data): nuisance/trash/tobacco citations by the Environmental Control Board against a property. Citation number, address, status (Open/Paid/Abated/Voided), fine & balance, hearing, district. Property code-enforcement diligence.

Baltimore County, MD building & trade permit registers (~310k, public open data): who pulled a permit for what and where. Building/construction (~165k, est. cost + depth), electrical (~64k), gas (~42k), plumbing (~39k). Search by permit number, owner, address, status, date; aggregate by type/status.

Baltimore City building & housing permits (~292k, 2019-present, open data): full permit file - scope-of-work, cost, existing/proposed land use, address, neighborhood, district, housing typology, original vs modification. Search by case/keyword/address/cost/date; aggregate by neighborhood/use.

Prince George's County, MD tax-sale foreclosure register (~78.7k, 2009-present, open data): every property submitted for county tax sale - tax account, property id, submission date, address, occupied flag. Distressed-property diligence: an address's full history or a fresh-submission sweep.