Can I claim back the VAT on my self build from my receipts?

Can I still reclaim VAT on my self build if I’ve already moved in? It may be worth mentioning that I finished building my new home a year earlier than the completion certificate. You have a three month window to reclaim your VAT, usually starting from the day that the completion certificate is issued by building control. To claim earlier than that date, you will need to provide evidence of completion. is may be a letter from building control, a habitation certificate from your local authority, a notification of a new entry into the Valuation List or a document from your bank or building society stating that the last instalment of any loan had been issued. Any of these can be used as the trigger to start the VAT reclaim.