These office units had been successfully let for a number of years but slowly the applicant had failed to to get new tenants.  A planning condition on the previous permission prevented the use of PDR and as such full planning permission was required.  Whilst we had been successful a few years ago on the other part of the barn we still had to demonstrate to the council that residential use was the only practical proposition, as required by the local planning policy.  This was done using marketing and viability reports and this, plus a robust planning statement, was sufficient for the council to approve the application.