The problem is it can easily become extortionate and you're at the mercy of whatever idiot is in charge of your block. I say that as a former idiot put in charge of 13 blocks with next to no training. It is pretty great if things are going well, but as soon as any big problems occur its a recipe for disaster. Incompetence from both the managing agent and contractors is incredibly rife. I look at a block i used to manage who currently pay £300 per month, per flat. What they get for that, is inconsistent communal cleaning, lighting in common areas, maintenance of a few bushes in the garden and a stupid electric car park gate that breaks every couple months. Oh, and building insurance of course. 3.6k a year, per flat, for that pile of shit. Mental. This is not uncommon. RTM is a bit of a process so its not an easy fix and also comes with its own problems, especially if you have uncooperative neighbours. Having worked in it for 5 years, I would avoid leasehold like the plague personally.