co-op
But....but cLoWnFiSh....
The 15% rise is very real - I've seen some RICS surveyor valuations in Brixton go up by as much as 25% since April last year. There is not a huge amount of good stuff on the market and a lot of people are after the same places. Half decent flats are selling before the particulars have even been drawn up and lots of buyers are facing sealed bids.
I checked out the example you posted and I am fairly certain that the advertised flat is not the same one which sold in 2009 for 290K. Zoopla says 34A sold for 290K in 2009 but if you check planning records here you'll see that 34A is a 2 bed ground floor with a garden. The flat for sale on Zoopla for 250K (under offer) is a 1 bed first floor with access to a communal roof space.
Well if you're right that would explain that example - and tbh it seemed a bit extreme (firstly most people simply can't afford to take that kind of hit in a couple of years) so I should have raised an eyebrow at it, but it was a quick search to make a point.
But I'm still going to call BS on 15% this year - or in the last year for that matter. Obviously there are people with money around who have assumed that you Cant Lose On Property and they are presumably going to be shelling out top dollar, there's the whole two-tier economy in London etc. But there's absolutely no way the market is roaring up. I can certainly find real terms price falls in Lambeth and have been able to for a year or so. And that I haven't seen since the 1990s or even the 80s if you're talking Brixton.
If all these slavvering buyers are all over the place, why are so many flats sitting in the market for over a year? Much more in many cases. I think a few people get lucky when they sell and hook a wealthy mug but there aren't enough of them around for everyone.