Right of Occupancy Vs Mortgage application

[Bob Builder]

I have a got planning permssiion for a house but the Council have put a 7 year right of occupancy for 'The Applicant' condition on the site. This does not worry me as the person I bought the site from (who is 'The Applicant') is a good friend. However I will be looking for a 140K mortage here soon and I should be ok on most application criteria but I was wondering has anybody had difficulty with getting a mortgage because of this clause?
Would appreciate any advice or experiences

Regards