Why has this only cropped up now, 8 years later? Do you not get on with your neighbour?
You say that she’s rejected £2000 as compensation, what does she want?
On what basis is she maintaining it is 200 mm and on what basis are you saying it is 50 mm?
At this stage, I will tell you that the £600/£800 plus VAT for a boundary surveyor is going to be cheaper than going to court because if you both use solicitors, that’s going to cost £400 per hour between the two of you. The loser pays the winners cost so it’s risky.
In cases like this, the court would not order the extension pulled down and rebuilt purely because the neighbour has waited so long and as a result, it seems that it doesn’t really affect the neighbours enjoyment of the property much. Hence, if it did go to court, I think it unlikely that the neighbour would get more than £2000 in any event.
What you might want to do is get a solicitor to write to the neighbour making what is known as a Part 36 offer to settle for £2000. She is likely to take more notice of a letter from a solicitor. The effect of a part 36 offer is that if the matter goes to court and she gets compensation which is not more than £2000, she will have to pay all the legal costs of both her own advisers and your adviser from the date of your offer and that could be considerable and indeed, more than the £2000.
Can I clarify anything for you? Please rate the service positive so that I get paid. We can still exchange emails. Best wishes. FES.