Housing becomes legal and feasible
Capacity and approval reform change what may be built.
Follow the causal chain
Good evidence follows a reform from legal capacity through applications, permits, construction, occupancy, vacancy, and rents.
A reform can be meaningful yet produce little immediate construction because projects take time or other constraints still bind. Conversely, a permit announcement is not a household moving into a finished home.
Capacity and approval reform change what may be built.
Financing and market conditions determine which opportunities move forward.
Only then can occupied supply directly change vacancy and competition.
A simple example
No rent effect after 12 months is called proof of failure.
First inspect applications, permits, starts, and completions at plausible lags.
Judge each stage with the right outcome and enough time for that stage to occur.
See the evidence
Strong evidenceA city cannot build homes it has made illegal.Read the studies →Strong evidenceLegal on paper is not the same as buildable in practice.Read the studies →