Here is rule of thumb.
Garage laundry
1,060 sf = 2 master BRs / 2.5 ba
1,250 sf = 2BR+ loft /2.5 ba
1,450 sf = 3BR /2.5ba
All inside laundry
1,700 sf = 4BR / 3ba + Great Room
2,150 sf = 4BR/ 3ba + 5th BR down + Great Room
2,250 sf = separate formal dining + 4BR +Great Room
Formal Livings
2,300 sf = Separate family room + 4 BR
2,650 sf = Separate living, dining and family +4 BR + bonus
If any footage higher than posted and offers less rooms then you are buying an inefficient floor plan. High sellable footage but low livable space.
This is the BagOCheesePuff theory (fill up the bag fast but still there is nothing there to eat).
Take the Juliette Balcony plan with 5 BR posted at 3400 sf and create an efficiency ratio.
2,150sf/3,400 sf=63%
90%=A
80%=B
70%=C
60%=D