Why is it good if housing start numbers are lower?

[Account Closed]

On the REIN (Canadian) Property Goldmine Score Card, one question that should be answered yes is

• Is the housing start number lower than the historic average?

Why is this important? Does it mean if there are less starts, there will be less housing available and therefore more demand for rentals? Does it predict prices to go up once the new properties are absorbed? I can't find a description of what this means for investors, not even in Don Campbell's ACRE book. This is the 2014 scorecard, updated after the book was printed.