please find answers to you queries
1. you need to have an agreement to sale with builder, and the consideration to sale must be clearly mentioned, payments installments to be incorporated. I do not think it need to be registered.
2. Normallly, it will within 30days from the day of acceptance of your request at pf office , if all documents from your side is submitted.
3. it will b remitted in your bank account never it will b paid to builder
5. Please do not take help from any one it may get delayed. Pl take assistance from PF authorities or the persons dealing with PF matters in your company or consultants. this practice may lead to unnecessary delays
Was under the impression that the amount will be credited to Builder's account.
Trust it can be done within 30-45 days. Will use the services of PF personnel in our org.
Appreciate your kind attention and help