In order to effect improvements across the sanitation chain, an assessment was undertaken of the existing practices with respect to on-site containment structures. While already existing on-site structures need to be surveyed to ensure compliance with sanitary requirements, and enforcement in this regard has been taken up by ULBs in Tamil Nadu, another intervention identified was improvements to the existing procedures for receiving and approving building proposals. This note summarises the review and the ensuing recommendations shared with the Government of Tamil Nadu which are under consideration.