I bought a plot in Jaipur from a builder, promising to resell it within a year without registering it officially. I paid him in installments through 12 post-dated checks. Now, he's demanding extra money, claiming it's for mandatory JDA fees he paid. He w

I bought a plot in Jaipur from a builder, promising to resell it within a year without registering it officially. I paid him in installments through 12 post-dated checks. Now, he’s demanding extra money, claiming it’s for mandatory JDA fees he paid. He wants the payment in 10 days. But he never mentioned this extra charge before selling me the plot. Is it usual for builders to demand JDA fees even if the buyer isn’t registering the plot?