An active month of sales gives a valuation more comparable evidence to work from, since recently sold homes on similar streets are a far more reliable guide than a single citywide number applied uniformly across every neighbourhood in the city.
The housing stock itself is the other half of the answer, and an established Fairhaven house needs its actual condition and updates weighed against those comparables rather than assumed from its age or its street.
Comparable sales, not the citywide figure alone, are what set a fair number for a Fairhaven house. Get your hand-reviewed valuation from Joel Dyck.