dear sir depreciation are compulsory on residential flat because depreciation decrease value of property in future sell of property can be excess capital gain please explain
Explanation (5) of section 32 clarifies that depreciation is to be compulsory deducted.
However, Section 32 falls under chapter IV part D which is "Profits from Business and Profession". Thus for claiming depreciation on any asset such asset must be part of your business/profession.
Thus if you are referring to your residential property then NO depreciation provisions would apply unless it used for business/profession (on proportional basis).