@classmethod
def get_avaliable_property_certificates_from_council(cls, council_id,
    session=None):
    """
        Avaliable prop certs are those that aren't deprecated (deprecated = False) 
        """
    return cls.get_session(session).query(cls).filter(cls.council_id ==
        council_id, cls.deprecated == False).order_by(cls.visual_order.asc())
