hi Lizzylou
Property prices - £150K is about £420Kish dollars for which you should easily be able to buy something mortgage free, 4 bedrooms no problem. There's a mix of houses from older wooden villas etc to modern (of which there are plenty of boring characterless buildings like anywhere else!). One thing to get used to is there are many more one storey houses here. Small gardens aren't the norm, actually most people have very decent sized 'sections' as they call them; sometimes they've been subdivided (we have a small garden), when they've not you'd have bags of land and having double or even bigger garages plus workshops etc. is v.normal. I'm not aware of any areas that are predominantly ex-pat so I wouldn't worry about that. Have a look on here for some idea of prices; to give you an idea areas we looked at included Merivale (too expensive for us though!), St Albans, Beckenham, Cashmere, Burwood, Shirley, Avonside, Avonhead, Ilam, Riccarton. Most of those are fairly near into the centre. Some suburbs have a lot more modern houses than others (like Avonhead, Riccarton) whereas others (like Beckenham where we are) are packed with older houses. To live by the sea costs more, unsuprisingly, especially near Sumner, but then New Brighton is on the sea and quite inexpensive because it's not very 'fashionable'. Or there are plenty of subarban centres out of town. I like living near the centre as it's not a busy/big place and also my parents live right bang smack in the centre.
On the pollution, I think it is getting much better as real efforts are being made - my mother talks of the smog when she was younger and it did sound awful. DH has asthma and so far hasn't had a single attack. Compared to London (where we also lived on a dual carriageway mind...) the air quality is great. Can't really recommend the weather from this summer as it's been crap, however I believe it is an El Nino year so the summer has been unusually pants. The weather is quite mad though - a real 4 seasons in one day place. We end up talking about the weather A LOT here.
Work wise, DH is still looking but then he hsn't been trying very hard! (and only got his residency a few weeks ago). His previous job (classical music marketing) doesn't really exist here so he needs to do something else. I am a musician (but also very pregnant) and although it's taking a while to get into it here, that's the same anywhere. (I was also an IT professional and could, frankly, walk into a job in that if I wanted, but I don't).
Are you going to do an exploratory trip first do you think? I am really waffling here. As I say, fourbob could probably be a lot more concise and definitive.