Harry, Harry, Harry. Have you been a naughty boy ? Threat of enforcement, more threat of enforcement, a few letters either way, and i can see that taking a couple to Three months. The head of enforcement will then have a couple of internal meetings at the council, where it will be discussed. What have you done wrong, who has complained etc. This will include the councils legal bods, because they will know that if enforcement is served, and you take it through to appeal and win, it could end up costing them a considerable sum of money. ( all councils are skint)
If the breach is not massive, they may decide to take no further action.
Sometimes, they will have a quiet word with you and let you know that if you put it in for retrospective it will get passed.
One way to think about it is........ let them know that you are having some drawings, etc done, and that you will be submitting that to planning as soon as available. Keep in touch with the enforcement officer and make sure that you avoid an enforcement notice being served on you ( very important )
Stall on the retro application for as long as you can, but have the papers ready to submit so when the enforcement officer gets the hump, you can put them in before the enforcement notice is served on you.
Planning app (retro) now in. Council will prob take the usual 12 weeks to consider, and give you a decision. (Lets say refused)
You now have 6 months to appeal that decision.
Tell the council that you are preparing the papers for appeal. Keep in touch with the enforcement officer, and stall out as much of the 6 months that you can.
Bung in the papers for appeal. the average is 9 to 12 months for the appeal.
You get refused at appeal, at the enforcement person is back on your case.... Stall him out for as long as you can. He will have to go back through the council meetings again. Eventually, you will get served with an inforcement notice.
You don't comply and you string it out with the enforcement officer for as long as you can. Say 3 months.
Appeal the enforcement notice.
9 to 12 months to be heard.
You get refused, and now you are prob left with a couple of months before the council start really coming at you.
On each of the processes above, you change small things, (planting for screening) changing the colour of the dormer so it stands out less etc, etc.
You can prob end up with a process that will string out for 3+ years.
How do i know ? Because my mate is the head of enforcement at a council.
Hope that helps you naughty boy.