Why it matters
In Chennai, most homes are approved by the local corporation or municipality, and larger buildings go through the Chennai Metropolitan Development Authority (CMDA); outside the CMDA area, the Directorate of Town and Country Planning (DTCP) rules apply. An approved plan matters for bank loans, electricity and water connections, and when you sell.
How Elamentt handles it
Approval drawings come with every package. The approval fees themselves are listed and quoted separately, before you sign.