Who's building in Philly — before the cranes show up.

The Building Report: every new-construction and major-alteration permit L&I issued last week, mapped to corridors.

• №New-construction permits with unit counts, so you can see density coming block by block
• №Contractor and owner names — spot the developer assembling a corridor under three different LLCs
• №Corridor heat list: which streets are pulling the most permits this quarter

Compiled weekly from Philadelphia L&I permit issuance data. Filed ≠ built, and we say so — issuance is the earliest public signal there is.