Completion Certificate Norms
Completion Certificate Norms is official guidance issued through the Tamil Nadu Single Window Portal on inspections, permitted building deviations and the work required before a completion certificate may be issued. It covers residential and commercial projects, non-high-rise buildings and high-rise buildings, with different tolerances based on building size and height.
What the guidance covers
Completion Certificate Norms sets standards for plinth-level inspection, last-storey inspection and completion certification. Plinth inspection checks setbacks and the building footprint against the approved plan. Last-storey inspection checks height and the footprint up to the final storey.
The guidance affects owners, developers and applicants seeking completion certificates. It identifies work that must be finished and deviations that may be accepted.
Work required for completion
Completion Certificate Norms requires the following principal work in commercial and residential projects:
- Terrace floor with weathering course and parapet wall.
- Lift machine room, overhead tank and staircase headroom.
- Electrical, sanitary and water supply installations, although specified fixtures need not be installed.
- Water storage sump, exterior plastering and joinery frames.
- Removal of dowel rods left for vertical or horizontal expansion.
Commercial interiors, fixtures, flooring and partitions need not be completed. For residential buildings, internal plastering and flooring need not be completed. Residential projects must have kitchen provision, including water supply and drainage where a modular kitchen is proposed, and internal partition walls.
Non-high-rise building tolerances
For buildings with ground floor plus two floors, or stilt plus three floors, up to 12 metres, with no more than 16 dwellings or up to 300 square metres of commercial space:
- Length and width may each increase by no more than 0.30 metres.
- Height may increase by up to 3 percent without exceeding 12 metres or creating another floor. Institutional buildings may not exceed 18.30 metres.
- FSI tolerance is a maximum of 15 square metres above permissible FSI.
- Flat interconnection is allowed if parking requirements are met.
- Rainwater harvesting must be provided.
For non-high-rise buildings up to 18.30 metres that exceed 16 dwellings or 300 square metres of commercial space, the dimensional increase remains 0.30 metres in each direction. Height may increase by up to 3 percent without exceeding 18.30 metres or adding a floor. FSI tolerance is 0.03 of FSI or 50 square metres, whichever is higher.
Other controls
Completion Certificate Norms does not permit permanent compound walls on land left for street alignment or road widening. OSR land must not contain structures. Larger non-high-rise projects must reserve one third of the terrace for solar photovoltaic panels.
For high-rise buildings, the supplied norms allow up to 0.30 metres increase in length and width. A 0.30 metre setback reduction is permitted for buildings within 30 metres in height only if at least 6.70 metres remains. Greater height requires a corresponding setback increase.
This summary is generated from the source document to help you find what is relevant. The PDF above is authoritative. For advice on your own property, use LandLens One or speak to a qualified professional.
Common questions
Must flooring and internal plastering be finished before a residential completion certificate is issued?
No. Completion of internal plastering and flooring need not be insisted upon for residential buildings.
Can the completed building be slightly larger than the approved dimensions?
Yes. For the building categories covered, the increase must not exceed 0.30 metres in length and 0.30 metres in width.
Can two flats be interconnected?
Yes. Interconnection between two flats is permissible as long as the parking requirement is satisfied.
Can a compound wall include land reserved for road widening?
No permanent compound wall may include land left for road widening. For the larger non-high-rise category, that land may be landscaped and enclosed with temporary grill or barbed-wire fencing, with or without a dwarf wall not exceeding 0.60 metres.