We did a loft extension in 2015 taking out 3 bed victorian terrace to a five bed. It was under permitted development in a London Borough. Beyond that I find it hard to remember any details - since then I have had babies, lost close family members, dealt with redundancy and the pandemic etc - my brain is fried to pieces. I can't remember anything including what paperwork we did or did not do or have, though I definitely would not have done anything not allowed on purpose (though can't rule out having cocked things up).
Anyhow, eight years on and I am trying to think things through and get everything in order in case we ever want to sell. Presumably I would have got myself a certificate of lawful development. but no idea where it is if I did. Can I get a copy? And if we didn't get one does this matter - am I right in thinking there are no repercussions after ten years in which case should we wait until 2025 to start thinking about getting copies etc?
And I recently got the deeds to our house when we paid off mortgage and it is still three beds on the plans - what do I need to do to get the loft extension added to the plans?
Be nice and gentle please - but I know I do need to actually start thinking about this. So embarrassed by my lack of keeping everything in one place or remembering what we did.