I did do a check on this picture -
http://www.flickr.com/photos/40936407@N07/6982382355/
I presume it's the one you are talking about.
The terrace block touching the NW corner of the green area has about 40 dwelling units and few more on the North end. It alone would take up much more than half of the "blocks" area. Since the towers are about 54 flats each, the blocks are more dense. At the redevelopment (gentrification) level they can even be 108 flats per block, far exceeding the terrace house block density.
(There's none so blind as...)
Please be polite and don't confuse me with Chase - I have stayed polite...:PDT_Aliboronz_24: