I've lived in Mount Symon for over 4 years.
Positive points:
It's a pretty quite estate. I've rarely seen anti-social behavior. There is a resident's association which does try to keep the estate maintained as Fingal CoCo hasn’t taken it in charge yet. [broken link removed]
Proximity to Clonsilla train station. Less than 10 mins walk. Trains are frequent in the rush hour though overcrowded. Although it would be worse trying to get on in Coolmine or Castleknock.
Plenty of shopping nearby. Ongar is a newish area a few minutes away towards Clonee. Has a Dunnes, bakery, coffee shop, etc. Blanchardstown Centre is close and has pretty much whatever you need. Another Dunnes. There is a Tesco in Roselawn and a Superquinn in Blanchardstown village. Blanchardstown village has plenty of pubs, restaurants, etc. Not within walking distance.
In about five minutes you can be heading out the canal toward Leixleip if you want to go for a cycle, walk or run. Gets away from the traffic!
Some negative points:
There are quite a few rented houses in each road. Where I am I'd say it's about 40%. Having said that most are being rented by families and have been continuously since I moved in. Rarely have problems with noise, etc.
A lot of development had taken place in D15 over the last number of years. I don't have children but the situation with school places is supposed to be a bit of a problem. Although I think the Dept of Education has committed to building a number of new schools in the very near future. There is a lot of further development planned for the Hansfield SDZ.
Traffic can be a big problem especially morning commute if you are going to town.
I don’t know what is planned for the undeveloped land opposite the Avenue. A builder applied for permission to build apartment there some time ago but this was rejected by Fingal.
Overall I’m quite happy to live here.