Mathing it out if those neighbors leave and combine the adjacent lot for multifamily construction when their kids move out in a...
Mathing it out if those neighbors leave and combine the adjacent lot for multifamily construction when their kids move out in a decade or so, depending on number of units feasible (and basement units/extended family compounds already here) the new building would suddenly constitute from 40% to 75% of all the households living on the block. Which is both the promise and cost of residential densification, I suppose.
I mean depending on the market it could feasibly become only 4 townhouses.