Ha, no not the Artichoke, the one I'm thinking of is a couple of streets west of that, just down from Ford Sq. Not sure if the Artichoke still runs as a pub, I think it's just flats now but will have to take a closer look next time I go past!
In terms of house prices, we've owned a 2 bed ex-council flat for 3 years, and it's increased in value by about 50/60% - that's including some improvements though. We've had no problems with crime and I feel really safe on the street, even late. Could just be lucky, who knows, it's London.
I love it here, the transport is amazing (crossrail will make it even better), you can walk into town, or to brick lane, or hackney. I love the market for fruit and veg, and I really like that it feels a bit more 'real' than a lot of London, which is hugely to do with the bangla community - it feels like a lot of people live and work here, which isn't the case in so much of London.
Hipster-mageddon does seem to be seeping down Cambridge Heath Rd, and there do seem to be lots more young men with bicycles around (my DH being one). The Soho House group have opened a burger joint at Whitechapel Rd/Cambridge Heath and they tend to be pretty savvy about new areas - I wouldn't know for sure, but I suspect that we're starting to get quite a lot of renters who have been priced out of Hackney and Bethnal Green, judging from the people I see wandering about. Plus of course there are the students from the med school.
The 'vision masterplan' is here - depending where exactly your building is it could affect it quite a lot: www.towerhamlets.gov.uk/lgsl/451-500/494_th_planning_guidance/consultation_and_engagement/draft_whitechapel_vision_spd.aspx
It would also be well worth reading about what's been going with the council. We're all sort of waiting to see what happens vis a vis Mayor Lutfur Rahman/possible corruption/Eric Pickles. Basically they're looking into whether Rahman has been allocating resources fairly, and depending on the findings Tower Hamlets could, in theory, start operating quite differently: www.eastlondonlines.co.uk/2014/12/takeover-squad-move-into-tower-hamlets-council/
If I were you and could afford it, I'd build with an eye to crossrail and the regeneration plan, not the mention the general ever-upward trend in London house prices. But I have no idea about property development - I can only ramble on about Whitechapel!