Start a B2B Data Aggregation Service

It sounds technical, but the hard part is persistence, not code; valuable public data sits fragmented across government sites.

1. 1

   Pick a dataset with buyers

   Building permits sell to contractors and material suppliers; new business registrations sell to lenders, insurers, and sales teams. Start from who pays, not from what is easy to scrape.

2. 2

   Validate before you build

   Call ten potential buyers and ask what they pay for leads or data today. If nobody currently spends money on an inferior version, walk away from that dataset.

3. 3

   Build the collection pipeline

   Write scrapers for county and state portals, file public records requests where no portal exists, and load everything into one Postgres schema with a source and date on every row.

4. 4

   Make cleaning the moat

   Dedupe, standardize addresses and names, and flag stale records. Anyone can scrape; a dataset a sales team can actually import is what commands the price.

5. 5

   Sell simple, then scale

   Start with a monthly CSV or spreadsheet subscription per county or state, then add API access once a few customers ask for it. Do not build the API before the first check clears.

6. 6

   Poach from worse providers

   Your first customers are already buying stale or overpriced data. Offer a free sample of your fresher version for their territory and let the comparison close the deal.

7. 7

   Automate the refresh cadence

   Schedule weekly or monthly refreshes, publish a data dictionary, and monitor for source site changes. Reliability is why B2B data subscriptions renew for years.