It is a mid century house. It has a large, single storey annexe and has had the wall pulled through between a living room and conservatory. Sellers have produced planning permission certificates but it seems like they're unable to provide building reg certification from the council or private. It was done just under 10 years ago. I don't feel like indemnity insurance is enough here. It's a fairly recent extension and I don't think it's defensible to have not got certification. Am I making too much of this? What are our options. Solicitor seems to think that obtaining retrospective certificate is the best way forward.