Hey Runner!
I have an idea of what you might be talking about .... in Ontario Canada, it's a CAS standard, and its not room size, is room capacity. There are rules in regards to what children can share a room, and how many to a room.
So I think in the US it will more have to do with a CPS legislation, or even HUD - Department of Housing and Urban Development . Though my investigative skills are lacking tonight, those might be a good jumping off point for ya to research with
Or maybe there will be a PA adoptive mom that knows right off the top of their head too. Never know!

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Heather (27)
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Steve (29)
On a TTC Break after 3.5 years
Hubby has hyperthyroidism, with T4 at 85 (normal 22) and T3 at 35 (normal 6.5)
July 2009 - Radio Active Iodine - Failed. Did not kill off enough thyroid.
October 2009 - T4 is 29 and T3 is 22
Jan 2010 - Another round of RAI