In broad terms (and not to upset certain politically active fans), Haringey were under a Corbyn like council for years who seemed to never improve the area around Tottenham with almost zero new builds despite a swelling local population. Tottenham area used to be 'gentile' and even middle class to look at the older buildings around the area when Spurs first joined league in early 1900's but was largely rebuilt post war (mainly I think in the 60's) as a 'concrete' jungle with little social space and had become an area inhabited by less well off people, many not working and others in low paid jobs tending to be cramped in deteriorating housing/area....... and nothing changing as local council didn't believe in changing people's lives for the better (sad but true - politically better to let people complain and local Cotrbynist council blame government whether labour or conservative) .
Spurs wanting to rebuild a stadium was proposed but was totally against the political requirements of the local council (private company, change, rebuilding in the area etc) from the earlyish 2000's onwards.
There was a rude awakening in 2011 for both local council and national government with a major riot, looting of shops etc over a few days and nights - the demands of the locals very quickly became focussed on 'change' - more and better housing, more employment, better chances in life and (I think) they had seen many areas boom in the last 20 years, but their area going downhill.
The riots set in motion a realisation for the council that things needed to change, Levy re-put forward the prospect of hundreds of millions investment in a local stadium (with big crowds spending money in the local area) plus a commitment to build housing in the area with several early developments being 100% for social housing with amenities such as school, medical centre and other amenities (much of the list reflecting the type of changes demanded by locals and rioters).
The first major housing build (before the stadium) was Brook House (some 100+ flats finished to a good standard (almost zero complaints from new residents - sadly unusual these days where new build quality is often poor) and all 100% social housing together with a primary school, leisure area and some business space to employ locals. More housing has followed to a similar standard, typically 80% (ish) social housing, rest private. I believe Spurs have mow enabled more homes built in the area than the previous 40 years and indeed have still built more than Haringey and its partners.
You will know all about the stadium build which actually commenced building in 2015 ish and completed in 2019. But in a different political environment, the stadium could have been built almost a decade earlier - and the changes stemming from the new stadium, new housing, new employment and enhanced education might have prevented the Tottenham riots.
There's a lot that fans can say about the football club, but one thing we should all be proud of is the changes Spurs have and are making in the area with huge improvements in housing, employment (thousands employed though Spurs initiatives) as well as education (
London Academy of Excellence Tottenham (LAET) - results are staggering for a disadvantaged area including local pupils going to universities including Oxford and Cambridge) together with Spurs Foundation providing other social initiatives.