Who is building in Pittsburgh, by the numbers.

Groundbreak Pittsburgh tracks every Pittsburgh development project from the public record: permits, subs on trade permits, notices of commencement and furnishing, sales with the price, Indiana and Lawrence County deeds and mortgages over $1 million, City Council land use items, construction stormwater permits and FAA height filings, with the applicant named, updated daily. These tables are computed from those filings about once an hour, with the method and the computed time on each page.

• Largest building permits filed in Pittsburgh this month

  The biggest building permits issued in Pittsburgh this calendar month by declared valuation, with the project each belongs to. From the city and county permit feeds, updated hourly.

• Most active general contractors in Pittsburgh, last 90 days

  The general contractors named on the most building permits in Pittsburgh over the last 90 days, counted from the permits themselves.

• Most active developers in Pittsburgh

  The developers with the most tracked projects in Pittsburgh, with how many are live (proposed through under construction), from the project files.