Log Cabin on sloping garden - Height & Boundry Rules

[songbird707]

Hi All - First time posting. I know this subject has been discussed many times but I am still a little bit confused as to height rule if within 2m of boundary. My problem is interpreting exactly where to take the actual height measurement from to comply as my garden is on sloping ground. The cabin will be within 2m of the boundary. (it will be 1.1m away).
I have purchased a Dunster House log cabin and it was delivered last week. The roof is sloped from the front to the back (Pent roof). The cabin is 4.5m x 3.5m and is 13msq. Its height at highest point (front ridge) is 2.4m and It is advertised as PD compliment. I have sunk & set 12 concrete blocks (pillars) into the ground for cabin to sit on.
As the garden slopes from the back of cabin to the front - the front needs to be propped up 300mm higher than the back to compensate for the slope and keep it level.
The PD rules state that on a slope height measurement should be taken from the highest point of the adjacent natural ground which in my case would be the rear side corners of cabin. (top of slope).
The problem I have in understanding the height measurement is that despite the PD rules saying that "on sloping ground height is taken from the highest natural ground level" - it then goes on to say that "if within 2m of a boundary then no part of the building can be higher than 2.5m" - and this is what is confusing me.
If the height is taken from the highest natural ground at rear corners at top of slope then it would comply and pass a council inspection. However if inspector measures from ground at the propped up front of cabin it would fail. The cabin at the front would be 2.4m PLUS the 300mm it has been raised/propped.

I am all ready and eager to assemble the cabin but I need to be absalutley sure before I start as we have a nasty neighbour on one side who is an absolute nightmare and will 100% complain weather it complies or not. I've already seen them taking sly photos over the fence of the base I've made - and they even took photos and sent them to the council of two wheeley bins I temporally put out if front of house to allow room for cabin delivery truck - which resulted in a warning letter from them for "obstructing the highway"
ATTACHED PICTURE is a side view sketch of my planned cabin showing the slope and cabin propped up by 300mm at front. I've also attached a few screenshots of propped up bases on sloped gardens within 2m of boundrys that I found online which seem to still comply if measured from highest ground.
Question is - 'Where would a council inspector measure actual height from in my situation' and would my cabins height comply???? -
OR would I need to dig down deeper into slope at rear to reduce height (of propped) up front by the 300mm - thus ignoring the PD's highest point of the natural ground statement
Thanks in advance to any replies / advice

 

[songbird707]

PS: I have also added some pictures of the actual base I am working on in stu sitting on the blocks. I am reluctant to finish it and build cabin on it until I am sure of the PD height rule. It is currently covered with a tarp.

 

[freddiemercurystwin]

It is the highest ground level, this would be compliant:

Assume you've looked at the technical guidance here: https://assets.publishing.service.g...cdb2c9e9/190910_Tech_Guide_for_publishing.pdf

So it's very clear your proposal is compliant with PD.

Now whilst all that's well and good, there is the stupid planning officer factor, that is that some (hopefully the minority of) planning officers/departments do not understand the rules and despite the overwhelmingly clear legislation they think it's the lowest ground level. If your friendly neighbour makes a complaint and the planners deem it necessary to investigate then you'll have to hope they have a brain. If they don't then you could be in for a world of pain. There was a thread on here a while back where this exact scenario arose. So you take a chance and hope the planners have a brain, which they probably do, alternatively you apply for a Lawful Development Certificate.