From what I can see on fingal.ie, planning search, Hamilton Park currently has planning for 438 units in total (originally 538, then 450, now 438), with 225 being constructed during phase 1. Under ref: F08A/1425, the following is an excerpt from the Proposal -
SIGNIFICANT ADDITONAL INFORMATION / REVISED PLANS RECEIVED 14TH AUGUST 2009:- The revisions include a reduction in the overall number of residential units from 538 to 450 now comprising 16 detached houses, 93 semi-detached houses, 124 terraced houses, 25 duplex units and 192 apartments...
The above was amended from 450 to 438 units under ref: FW14A/0044 which I believe contains the most up to date Site Layout Plan /Block Plan. Well worth taking a look at the Site Layout Plan /Block Plan to get a picture of how both Hamilton Park and Diswellstown Manor will sit together when both are completed. Hamilton Park, when completed, comes as far as the Luttrellstown Road adjacent to Diswellstown Manor, directly opposite the Castleknock GAA Grounds. Hence it will eventually occupy the land between Diswellstown Manor and the M50.