We bought a new build house last year on a brownfield site in the centre of town so it isn't a new estate per se, as it is on an existing road (main road!).
We've not had any major problems but I can summarise pros and cons as follows:
Pros:
- We got a very good deal on extras - stamp duty paid, carpets and tiles throughout, cooker, hob, fridge/freezer (all integrated) and an integrated dishwasher, as well as turfed garden (which isn't too bad considering it was a bit of a chuck it down effort).
- As people have said - BILLS. Our gas bill is negligible, so much so Scottish Power have asked to come out and read the meter in addition to us giving the reading as it was so low! Our electricity consumption is higher, although we do keep tortoises so that explains that!
- It's a blank canvas - decorate how you want with minimal fuss.
- No chain - no waiting around for sales etc.
- Warranties on all of your appliances and a 10 year build quality guarantee.
Cons:
- Niggles - there were a few - you just have to be a pest with your builder. Most offer a two year period for them to be ironed out. For example, our bathroom locks are falling apart and the postbox brushes have failed - both are being replaced next week.
- Cracks - the way they build new homes means they dry out and some of the plaster can crack. Recommend not fixing until at least 18 months down the line when the building has dried completely. In the summer you could hear the building crack (settling!) Completely normal but might put you off.
- Off plan (house is not yet built) can lead to delays. We fortunately didn't have this problem as our house was almost built!
Garden - we have been doing the garden and the ground is awful - there are still bits of rubble and metal from where the existing structure used to be!
Other points -
Walls - not thin by any means but you can hear the neighbours if they are being particularly loud (having a barney - which isn't often, luckily!) Also the way they are built means they are hollow. Specialist fixings allow you to put heavy things on these walls though - thoroughly recommend them - we have some huge cupboards up in our lounge held together by tough fixings!
I personally recommend it as it is easy and you have the comfort of being able to jump up and down for people to fix things when you first move in and then for a small period afterwards. We only could afford a terrace this time around but I certainly wouldn't hesitate to buy a bigger new build when we can afford it. Just make sure you see a few different sites with different builders! And be cheeky when asking for extras!
Good luck!