Its a bit rough around the edges, aesthetically, the high street - but its definitely improving and definitely family friendly.
As someone said upthread, its teeming with ex Crouch/Muswell/East Finch/Highgate types
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Because of that, though, it can be tricky to find a 'ready to move into' home, as a lot of the properties are Edwardian and have been 'pre-loved' by long time residents...so crazy wallpaper and crusty kitchens a-go-go! But for your full budget, you could def find something pristine if you have a scout about and keep checking.
We bought in the area a few years ago and the house was hideous and needed a lot of work, but for the size of property/garden and the general vibe of the area, I'd say it was well worth it. Our house has doubled in value in 8 years, too. And more and more young families are moving in and giving their properties Farrow and Ball treatment
. Ours is a 4 bed Edwardian semi with big garden on a good road, close to the High Street, and the house is decent nick. Its was valued at around 950k not long ago, so your budget is more than healthy.
Schools are good up here, too. And its pretty quick on the tube into central London. Just over 20 mins to Euston. A hop and a skip on the Northern Line to Camden/Kentish Town.
Social life in the evenings is still a bit dismal. The Bohemia pub has made some in-roads in to giving the place a bit of decent character pub action. There is a strong community vibe between the small business owners up here, though, and a lot of pressure has been put on Barnet council to regenerate the High Street.