Allira
Madmeg
Also to add, our plan will make the shape of the garden squarer rather that long and narrow, which we think will be more attractive to potential buyers.
It sounds fine and I'd definitely get rid of the Leylandii, they do have very long fibrous roots which seem to go for drains, too, so just as well to have them removed.
You could tell Him at the Back that you are concerned about the roots going towards the drains and soakaways.
Keep it simple so that it is easy to maintain and might appeal to a busy family, too, of you decide to sell.
Have you got three quotes?
I can confirm re their roots going for drains. An (idiot) guy near my house put in a leylandii - in the tiny little back yard he had (even smaller than mine - and that took some doing...as mine was so tiny). I watched it growing and growing.....as I was steadily thinking more and more that I had looked into his eyes the day he moved in and thought "He's as thick as two short planks - his eyes are telling me this". I over-estimated - if anything...
Then, at one point I realised its roots were probably/almost certainly heading for the drains (Victorian drains and so they'd have been around 100 years old at that point). Cue for ringing the Water Board (if only I had South West Water here - instead of Welsh Water #sighs). They were out within hours literally - after I'd told them about the tree and that its roots were very likely heading towards their drains and might well already have got to them.
They wasted no time at all and, by the time I got back from work, I'd had the full story relayed to me that a gang of them had come in, put something down the drains to have a look and dealt with the issue. I couldnt complain at all about that for speed and efficiency. Yep...its roots had got to our drains...I was correct.
As I saw it - I reckoned those roots would be deriving "nourishment" from the water and...errr...human waste heading down our drains and didn't want them to get any encouragement so to say...