There is no "average" for this. It's not the size of block, although smaller can be more costly due to lack of economies of scale (still need someone to check the books, place orders, look after things so admin is higher in proportion to the number of units). Layout has an effect (more staircases and communal areas will need more cleaning, gardening, etc). Age - older usually is more costly to maintain. Lifts, entrance gates, entry systems all need maintenance contracts, and so on. In fact to me the proposed amount sounds not unreasonable, even though it is quite an increase.
Of course you can, ask the managing agents to confirm contracts for cleaning and the like have been recently tendered (costs could go up as well as down). Equally what are the charges of the managing agent? Do you as residents own the freehold and thus can choose your agent (or even do in house if you have someone prepared to take it on), or is the landlord a third party. If the latter, think about enfranchisement processes, if you beleive it is all a bit expensive:
www.leaseadvice.org.uk
Join CF
You are here: 
Shark Attack
5 In A Row
