off ▁Properties ▁of ▁Philadelphia ▁signed ▁a ▁Let ter ▁of ▁Intent ▁for ▁the ▁development ▁of ▁a ▁mixed - use ▁lux ury ▁resident ial ▁and ▁ret ail ▁project ▁in ▁ 2 0 0 8 . ▁ ▁At ▁the ▁time , ▁it ▁was ▁initially ▁planned ▁as ▁a ▁ 2 8 - story ▁building ▁with ▁ 3 0 , 0 0 0 ▁square ▁feet ▁of ▁ret ail ▁space , ▁ 6 4 0 ▁par king ▁spaces ▁and ▁ 2 5 0 ▁r ental ▁apart ments . ▁By ▁ 2 0 1 0 , ▁the ▁idea ▁grew ▁into ▁a ▁$ 1 9 0 ▁million ▁project ▁with ▁a ▁ 4 4 - story ▁tower , ▁ 3 2 8 ▁resident ial ▁r ental ▁units , ▁a ▁pool ▁and ▁a ▁sp a . ▁However , ▁due ▁to ▁an ▁economic ▁dow nt urn ▁and ▁consequ ential ▁financial ▁difficulties , ▁the ▁plan ▁was ▁changed ▁again . ▁That ▁proposal ▁would ▁have ▁built ▁the ▁tall est ▁building ▁in ▁the ▁city . ▁ ▁Event ually , ▁the ▁plan ▁for ▁the ▁site ▁of ▁ ▁called ▁for ▁ 2 2 ▁stories ▁with ▁ 2 4 5 ▁resident ial ▁units , ▁ 2 4 ▁of ▁which ▁will ▁be ▁afford able ▁housing ▁units ▁market ed ▁as ▁artist ▁resid ences ; ▁ 1 2 , 0 0 0 ▁square ▁feet ▁of ▁street - level ▁ret ail ▁and ▁cultural ▁uses ▁and ▁struct ured ▁par king ▁for ▁ 2 8 5 ▁cars ▁to ▁serve ▁the ▁shared ▁needs ▁of ▁the ▁resident ial ▁community ▁as ▁well ▁as ▁those ▁of ▁N J P AC '