i think there was also number 63 for sale? (similar price but 5 bedrooms, driveways either side of the property?). wouldnt say its the best area. being right need primary school probably isnt good either?
there is no westfield and there is no station close by, not sure if BV is confusing with elsewhere.
take a look at crime maps:
http://www.lawlink.nsw.gov.au/lawlink/bocsar/ll_bocsar.nsf/vwFiles/Blacktown_08.pdf/$file/Blacktown_08.pdf
i dont see much benefit to the location, given its away from the station, has half-hourly buses to blacktown but thats about it (too far to walk).
for an investment, especially that number 43 (which looks nice) if u can rent out the granny flat, then itd be pretty good. not sure id buy a place in that area though, though havent looked too much there.
drive by on a fri or sat night, see whats doing.