This would be illegal.

If you think builder may not go for legal recourses and you can take the risk of litigation you can stop payment of the cheque by informing the builder without delay. 

Your legal liability shall remain with you.

Stop the payment. What is the content of booking form ? Mere booking without delivery and cancellation in a short period - no enforceable debt.

Stop the payment and inform the seller.

Let him demand or go for legal recourse.

Cancellation with in how many days ? Debt dose not mention, it is understood by transaction between parties. stop the payment. Otherwise will face more loss.

Immediately send him a request not to present the cheque mentioning some reasons for clarification regarding the deal,

Also request the bank to stop payment the cheque

Since no sale occurs without consideration, you have every right to come out of the deal and refuse to make payment.

2. So you can direct the bank to stop payment of the cheque and cancel the sale agreement by sending the builder a legal notice.

3. If you do so no case will lie for dishonour of the cheque. 

Inform builder that you do not proceed with purchase of flat and have issued stop payment instructions to bank 

Stop payment  of cheque 

in event builder files cheque bouncing case contest the case 

1. Your liability starts AFTER clearance of cheque, TILL then there is no privity of contract between you and builder, BUT only a proposal.

2.  Issue Stop Payment instructions to your Bank and a Notice to the builder, that you are not interested in his project and to return your booking amount cheque.

3. There is no legal liability on you, PROVIDED you comply with point no. 2.

yes you can stop the cheque if no other agreement is done as stopping a cheque involves legal penalties and builder can sue you for cheque bounce. In this case stop cheque as soon as possible if encash probability is you wont get the amount back. 

Is your 5 lacs cheque is cleared from bank? If its not cleared than you can make stop payment and sent email to Builder that you are not interested in the project.

If the cheque is cleared than you can have talk with builder and as per booking form norms may deduct the amount or not as the agreement to sale is not registered yet.

Yes you can stop cheque if you want. There is no criminal liability as you haven't executed sale deed. Only cancellation charges if applicable needs to be paid

You can issue instructions to bank to stop payment on the cheque if presented.

In the meantime you may inform the builder that you are not willing to buy this property hence you have given stop payment instructions to bank, there fore not to present the cheque to the bank for payment.

Keep a copy of the letters issued to the bank and also to the builder properly secured so that you can defend your interests in future if any arises in future.

The builder may not add all those details in the booking form however if your cheque had been en-cashed by the builder he may deduct a sizable amount from the amount paid by you and may return a paltry amount only, even now he may demand a huge amount towards the cancellation of booking, you can legally answer his demand.

1. Since the agreement to sell is not made yet you can stop the payment of cheque. It cannot attract Section 138 NI Act as there is no liability.

2. If cancellation charges are mentioned in the booking form then the builder can file a suit for recovery of money in the civil court to recover the same.

You cannot do so as he will file a case under the negotiable instruments act ie cheque bounce case.

There was liability and you gave the cheque because of the pending payment.

Therefore go through the legal route of cancellation.

Inform the Builder about your intention to withdraw your membership and ask him not to present the cheque for collection.

You can instruct your banker for stop payment.

You should contact with builder and ask him for cancellation in writing. You will have to write a letter to your bank for stop payment.

Yes you can stop the payment of cheque and send a notice for cancellation of booking to builder before he takes any legal action against you.