Hey why don't you consult with your r apartment association ...they may have some commercial space for such purposes. Many apartment association have some commercial spaces like vegetable or stationary shops. If it is there in your development then you can open your clinic after getting permission and paying some amount.
According to Supreme court orders...if all nursing homes, maternity homes and clinics in a residential society do not have mandatory independent access for entry and exit..they are declared as illegal. They can be constructed the ground floor, first floor and second floor with separate means of access or staircase, if it is within the building.