1. I have read the compensation clause which is reproduced by you in your query
2. it seems the dates on which the payments are to be made to the builder are given in Annexure 1 to the agreement itself
3. if that is so, then you should not have waited for the builder to send you the invoice
4. the payment to be made by you is not conditional upon the builder sending an invoice to you
5. you were required to make the payments as per the agreed schedule given in Annexure 1 of the agreement
6. even if there was a delay in handover of possession as per the agreement and the payment became due by you to the builder, you could make that payment 'under protest' and 'without prejudice' to your right to claim compensation for delay
7. however as there appears to be some delay on your side, it does not mean that the builder can go scot free
8. at the highest the builder will not pay you the agreed rental compensation as agreed to be paid by him for the period beyond the stipulated date of completion of the project
9. that would not absolve him of his liability to pay you interest for the period during which the possession has been delayed till the date the actual possession is given to you
10. you can either file a consumer court complaint or a RERA complaint
11. the complaint has to be filed where the property is situated. It need not be filed in the Court either where you reside or where the builder has office
12. so you can file a RERA complaint before the Tamil Nadu RERA Authority or before the consumer court having jurisdiction over the property
13. just because you file a complaint, either consumer or RERA, does not mean that the builder will harass you further. In fact he will be answerable for his delay. If you do not take action then he will have more wings to default further and delay the handover of possession even beyond the extended date of possession
14. so lodge the complaint immediately. These builders do not respond to legal notices. Even if they do, they only give evasive replies. So you can directly file a complaint before any of the 2 courts as above without first issuing any legal notice