That's a scandalous price!
I had a look on myhome.ie and it looks as though the 4 beds will be 'townhouses'. That to me suggests 'terraced', if not 'small 4 bed'.
I lived in Lucan up to 3 years ago and was very close to where the end of Adamstown was due to be built. I'm gone 3 years, so maybe things have changed, but, firstly traffic was absolute hell. Hell, Hell Hell!!! The lead up to the M50 roundabout was a dreadful mess, day and night, saturday & Sunday it didn't matter. But worst of all was rush hour. For 3 years I spent 3 hours a day minimum in bumber to bumber traffic to and from work and it was starting to get me down. The bus was ok on the way in, but to get through town and down the quays in the evening took minimum an hour so the bus journey home could be up to 2 hours!
Also, and more importantly, if you are considering buying in Adamstown you should check out the community group in Lucan who were objecting to more houses being built before proper infrastructure was in place. Don't know their name, sorry. Again things may have changed since I moved, but...
The ads on TV which say that all the services and 'guaranteed' may be a little mis-leading. The developers said that they could not build and more than a specified amount of houses until they had made provisions for schools, trains and buses. According to the Lucan group the restrictions put on the developers were not enough. They claim that all it means is that they have to leave a space where a school will go, ensure that a train station is built and paint a bus lane on the road. Then they can proceed. They don't have to wait until a school is actually built or a train has been organised to stop at the station or that there will be buses to go in the bus lanes.
Also, just before we left the local secondary school was running 'a lottery' for places and there was a long queue.
But if this is an area you're interested in look in Lucan itself. There's a 4 bed semi in Rossberry for sale, which is closer to town than Adamstown will be, for €390,000. Even with the full stamp duty rate this is still €70,000 less than Adamstown.
The more I read about houses the more I think we are heading for a crash!