The couple's counsel, Mr Ian Dove, told the court that the farm owners had originally been granted planning permission for a smaller winter lambing shed to be erected no closer than 20 metres from the wall of Mr and Mrs Pothecary's back garden.
'But in January last year the couple became aware that the building proposed was much larger and nearer to their residence than they had been led to believe,' Mr Dove said.
The original planning consent had been for a shed 42 metres long and nine metres wide, but the new building was of steel and wood construction, 32 metres long, 21 metres wide, and running the length of the couple's rear garden wall at a distance of just 10 metres, the court was told.
Counsel for the couple Mr Dove claimed planning permission had been unlawfully granted by the district council after it failed to take adequate account of the site's location in the Kingsland Conservation Area and that it had 'a duty to preserve the character and enhance the appearance ranch of the area.'
The council's planning committee had also reached its decision in breach of local and regional planning policy, he claimed.
The local authority insists it took all relevant considerations into account before granting planning consent. The case continues.