Dear sir,

Even Possession is the prima facie evidence of the ownership but without valid registration the possession is illegal, hence you may require to take some legal registration of the property in question.

Sometimes the circumstances demand that the buyer has to accept the possession of property though he is not satisfied on any one of the accounts. In such cases, you can clearly mention on the builders copy that you are receiving conditional possession of property or under the protest. You should specify conditions to be fulfilled by the builder like any pending repairs or OC/CC is not handed over. In short, possession is subject to fulfillment of certain conditions from builder’s end. If there is a delay in the project then you can always mention that compensation is due from builder’s end for the delay. By doing this, you can always follow up with the builder in future else as i mentioned that oral commitments have NO VALUE. In an extreme case, if buyer takes the legal route on any such issues then you can prove that it was informed to the builder.

Builder has purchase the flat from land owner through registered sale deed, valid trasfer of title, presence of land owner dose not require.

Do things simultaneously, registration of sale deed and delivery of possession. Chain of originals documents, from origin of property shall also be deliver to you.

Mere possession will be bad deal, register the sale deed.

you should take possession of flat only after sale deed is registered in your name 

2) check whether building has been constructed as per sanctioned plans 

3) whether OC has been issued 

1. first check the development agreement between the builder and land owner

2. then check the allotment agreement between the builder and land owner by which the model flat was allotted to the land owner in lieu of the owner granting development rights to the builder or as part of the owner's share of flats in the new building. This agreement has to be compulsorily registered

3. if there is a registered agreement in place between the builder and land owner then it is fine

4. then you need to check the agreement by which the owner sold the flat allotted to him by the builder. This document must also be registered. If it is registered then the land owner has to be a confirming party in the agreement that will be registered in your favour by the builder

5. it is not legal to take possession of flat without a valid OC. So insist for an OC

1. You can do that, however it is advisable that the sale deed is registered in you favour asap.

2. Get a title search done through a local advocate.  

1. Yes you can take possession of the flat though you should make an agreement on possession for registration and time limit for same should be decided.

2.Look for all plan approvals see the history and earlier transactions of the land.

Yes you can do registration within 6 months or later with penalty if delayed. 

But also keep a condition in writing that he will do the registration asap

Yes you can take possession of flat because Possession is the prima facie evidence of the ownership but without valid registration the possession is illegal so you should make a separate agreement with builder regarding possession before registration of flat. 

Even Possession is the prima facie evidence of the ownership but without valid registration the possession is illegal, hence you may require to take some legal registration of the property in question.

1.  Taking possession of the property without rtration of the same will not confer title on you, hence it would be better that you wait for the builder to sort out the problem between him and the owner and then pay him the balance sale consideration  amount and get the property registered on your name before taking possession.

2.  The additional documents are there with you which have been submitted to the bank for loan.