GLA total: 1351 sq. ft, excluded areas: 0 sq. ft

FLOOR 1: 1351 sq. ft
-((686 + 686) * (75 - 456) + (686 + 535) * (456 - 456) + (535 + 535) * (456 - 353) + (535 + 309) * (353 - 353) + (309 + 309) * (353 - 401) + (309 + 80) * (401 - 401) + (80 + 80) * (401 - 75) + (80 + 686) * (75 - 75)) * 0.5 * 0.00694