permitted development rights in an AONB

[trollderoll]

Under the 1995 PD rights one could extend ones home within specified limits but outbuildings could not be rebuilt in excess of 10 cu M, whilst building volume attached to the main building could be rebuilt without planning permission. Was it lawful to extend ones home within the lawful limits such that what had been an outbuilding became attached and then to demolish and rebuild what was no longer an outbuilding.

[buildersmate]

Before I attempt to answer your question, are you 100% sure you have PDs on a property in an AONB? - I think they are automatically removed if you are in such a designated area. It certainly used to be the case - and I am not sure that has been been changed.

[The Builder]

As far as I know, PD is severely restricted in Conservation Areas and AONBs.
I have no experience of AONBs, but in Conservation Areas, any demolition needs Listed Building Consent. I needed it on one occasion to demolish an outside lavatory :o(
There may be exceptions for tin sheds/chicken houses etc, but, in your case your demolition would apply to a part of your home.

[buildersmate]

You are thinking the same as I am, TB.
Demolition of outbuildings is not an issue in an AONB (subject to completing the required information required by Building Control).

[bushbaby_de]

The old permitted development rights for outbuildings prevented them being within 5m of the main building so the scenario you describe couldn't have happened as there was no way to attach an outbuilding to the main building without planning permission. Can't remember if AONB had less rights but this would have been the case if full PD rights applied anyway.