There was a "green area" in front of an apartment block beside the one I used to live in. The block was finished in 2007 ish time with residents moving in then, all having the usual commitments that common areas would be finished to standard etc.
Builder eventually went under completely last year and nama took over. Its only in the last 3 months that the area has been cleaned. Previously the most the residents managed was to get the builder to fence off the sections of the unfinished blocks, and even that required some legal pushing.
Basically as Knuttell has said, unless its a great deal. Run, fast, or be prepared to live with things as they are right now.