Hi, thanks for rating my answer.
1. Your Solicitor will do a Land Registry official search in your name or the name of your Mortgage provider, a week or so before completion. In the meantime, your Solicitor can also enter an Estate contract on the Freehold title to protect you, but this is uncommon with new builds.
2. You would be entitled to walk away and you would need to check with your Solicitor that the Deposit was paid as stakeholder, meaning the Developer's Solicitor should be holding the deposit. Also, if the Developer is NHBC registered, you would also be protected, and be entitled to your Deposit back.
3 The Contract will state in one of the clauses that the Developer has until the long stop date to complete the Build. 4. I don't understand this question.
5. Secured creditors come first. Please speak to your Solicitor to verify what I say at question 2.
6 Speak to your Solicitor who needs to check the Contract but normally you can only withdraw if the material change reduces the value of the property.
7 You would be entitled to the Deposit and interest back. Your Solicitor would need to serve Notice on Developers Solicitor once the long stop date has arrived. Please note your Solicitor can not serve any Notice to terminate the Contract before the long stop date.
I hope this assists.
Kind Regards Al