Yes I can understand why they can be very weary of any one wanting to do this but I just hoped that the fact that the stable block has been there so long and that it is already in a state in which I could live in it that it might stand some good ground as I brought it like this and not doing the conversions my self. I am very willing to play ball and am not going to want to build a 5 bedroom house or any thing just want to utilise what is already there. I want to improve the visual look of the land.... tidy etc.... there are other farms and dwellings down the road and I thought other than erecting some stables I wouldn't be changing the out lay and even if I did build some stable they would not be visible from the road or from any ones dwelling only open entry to the land. I only want to improve what is already there. As I do not want to make any significant changes to the land or buildings already there I thought this may be a good case for them not to reject PP. I don't think it will just be possible to move in and try and live there for 4 years with out any one knowing as the entrance is in view of the house opposite.
Well if it is substantial and potentially habitable as it stands, it is worth apply for PP, what's not worth trying is doing it without PP as in the scenario you describe the planners would be very peed off and also it would it sounds be impossible to stay under the radar.
What would increase yr chances is if there are 5 other dwellings close to the site, making a cohesive settlement in planning terms, that makes it more likely they will be willing to add one more. Also if there are no road access issues, watercourse pollution concerns or flood risk. If you do apply big up all the positives environment, eg one standard thing is to set aside some as garden and specify 25% of garden as edible crops eg fruit trees and bushes, veg beds etc. also maximise drainage by using porous materials for landscaping eg gravel not concrete for parking and use sustainable materials eg untreated larch cladding for block work, rainwater harvesting etc. good drawings are essential but without spending 5k on architects fees, prob you would need to apply for outline PP only as otherwise the drawings wont be detailed enough for detailed.
If you do get permission you will usually have a further bill as the council will sting you for a bribe sorry community infrastructure contribution as it will count as a new property, before they will issue PP letter, can be anything from a few hundreds to a few thousand, and it goes to things like capacity at schools refuse and roads services (yes I thought that was what our council tax was for too :-()
Good luck with the application !