In a house, the layout is negotiable. That is the whole difference
In a concrete tower the drainage connects to a riser in a fixed shaft, so moving a toilet or a sink is usually impossible rather than expensive. In a house with a wood-framed floor, it is a question of drain slope and venting, and therefore of cost: $2,000 to $5,000 and up per fixture relocated. Scarborough’s housing mix, 37.2 percent single-detached and 9.6 percent row against the lowest apartment share of the four districts at 35.2 percent, means that most bathrooms here fall into the negotiable category. That matters because a bathroom whose layout can change is a bathroom where a cramped 5 by 7 foot three-piece can become something genuinely better, rather than a room that gets new finishes in the same awkward arrangement. Scarborough is also the youngest of the four districts in one specific sense: only 22.1 percent of its dwellings predate 1960, the lowest share of the four, while 15.3 percent date from 1981 to 1990.






