5 possible housing sizes(guessing here)(I know 5 acres us a size):
 
0.25 acre (104' 4 1/4" sq)
1.25 acre (233' 4 9/64" sq)
2.50 acre (330' 0" sq)
3.75 acre (404' 2" sq)
5.00 acre (466' 8 9/32" sq)
 
per level (10 mi sky): we won't all have 0.25 acre houses some like mine(God has shown me it) are 5 acres so some are probably in between.
 
0.25:
5,760,000,000
5,683,456,000
5,607,424,000
5,531,904,000
5,456,896,000
5,382,400,000
5,308,416,000
 
1.25:
1,152,000,000
1,136,691,200
1,121,484,800
1,106,380,800
1,091,374,200
1,076,480,000
1,061,683,200
 
2.5:
576,000,000
568,345,600
560,742,400
553,190,400
545,689,600
538,240,000
530,841,600
 
3.75:
384,000,000
378,897,066
373,828,266
368,793,600
363,793,066
358,826,666
353,894,400
 
5:
288,000,000
284,083,200
280,371,200
276,595,200
272,844,800
269,120,000
265,420,800