When does it make sense to convert a multifamily to a SFR?

[Paul Winka]

The question in the subject line was prompted by a posting on a wholesaler's website that touts that the fourplex home is "ready to be converted to a SFR" for a big profit. For the record, the house is 3533 Iowa, Ave, 63118, a slightly blighted area of St Louis.

For investors, I was under the impression that converting a big SFR to multiple units, if feasible, was what was ideal.