It's easier to clean up a bedbug infestation without carpet.
It is easier to remove carpet than refinish hardwood floors.
Concrete blocks of flats are also more durable than these framed townhouse we are now providing. But, you can put your girlfriends head through sheet rock with less damage (to her) than a cinder block so that might be the reason.
In NO we build housing for the dysfunctionals in the range of 250K to 375K per unit. Excluding land acquisition costs.