Regarding monthly maintenance fers

Dear sir, We live in a closed community where we have 105 apartments of around 1000 sq.ft and individual houses ranging anywhere from 1800 sq.ft to 4500 sq.ft but we all are asked to pay almost same maintenance fee for all. We have common amenities like gym, swimming pool, indoor game hall, children’s play ground etc. Can apartment owner’s request to fix maintenance fee based on UDS as apartments UDS is just 745 sq.ft and individual houses UDS will be anywhere from 1500 to 4500 sq.ft approximately. Apartments are 4 Storey and has a small lift for each block totalling 8 lifts and we are ask to pay the insurance/fine which was lapsed by builder by the Association and association took over charge without checking on the this and now apartment owners are asked to share the burden of around 3 lakhs within ourselves which is coming around Rs. 3000 Each and previous association members allowed violation of builder by converting cinema hall to dinner hall and one lift in common amenities area was omitted by the builder after soon after the association is formed. My main query is regarding monthly maintenance charges. Should it be UDS based in a community which had a mix Of invidual houses and apartments or equal for everyone? Thanks