1. Base Maintenance: INR 1000/- (For flats with size less than 1000SFT)
2. If SFT above 1000 is 481, which will be: INR 481/- (rounded up to 500/-) total will be INR 1500/-
3. Similarly, Total for flat size 1121 SFT will be 1000/- + 121/- (rounded up to nearest 50/-) = INR 1150/-
4. Similarly for any other size greater than 1000SFT, round up the figure to nearest 50/- or 100/- and make the payments accordingly.