[logfromblammo]

Mathematical nitpick.

A vacancy rate of 10% is an occupancy rate of 90%. To house everyone with a 90% occupancy rate, you need to have 100 / 90 in available housing stock, which is 111.1% of occupation requirements.

If you only build 110% of what is needed, and no one is homeless, the vacancy rate would be 9.1%, or ( 1 - 100/110 ) .

The point still stands. Cities need more housing than strictly required for residents.

[forwhomst]

I perceived the error but I left it there so someone could gratify their pedantry. Congrats.

[logfromblammo]

Thank you. Could you box up my discounted dopamine hit for carry-out, please? I might need some smug satisfaction later, possibly while driving, when it's not so easy to go online.