Opinion needed please for planning permission

[Alphatiger]

Hi expert planners,

I'm looking to extend the house as attached - it already has a double storey side extension (original 1960's house in green hash). I'm thinking of doing it in the following steps to avoid it being deemed 'intensive use' or 'over-development' if done in 1 go:

(1) Apply for 3m conservatory (max 2.5m height and 1m from boundary).[shown in pink], if passed, at the same time...;
(2) Apply for gable roof extension and dormer [shown in red], if passed, then after (1)/(2) built;
(3) Apply for 6m rear under PD (leaving a 2.5cm gap as shown).

What is the likelihood of success for this based on your past experiences? (neighbours are all super-friendly so not a hindrance & 45 degree rule being met for convervatory & rear-garden is north-facing).

Many thanks in advance!

PS there are 2 entrance doors on the front, can the 2nd door also have a 3sq.m. porch right to the boundary under PD [shown in blue]?

 

[motorbiking]

Size of rear garden needs to be min 7m (from memory) post build and you’ve probably used up all of your PD.

 

[Alphatiger]

Thanks, however garden space is not an issue as even after these extensions it will be 8m long and 13m wide =104sq m, and I believe the garden amenity space needed is 50sq m for a 3-bed-house plus 10sq m for each extra bedroom. Any other thoughts please?

 

[tony1851]

The 2.5cm gap will not wash. Would need to be much wider.

 

[Lucas01789]

You should put it all on a single application for full planning permission imho. A lot of people don't realise that if you apply for (in this case) 3 separate elements on an application, then you only need to complete 1 of the 3 elements within 3 years for your permission to be valid 'in perpetuity' (presuming that none of the elements are PD of course)