Drafting planning conditions is a skill and an art. Then you look at Circ 10/95 (at least until Lord Taylor gets shut of it) and start all over again.
Had the misfortune to read one planning permission for 4 houses this morning- pretty simple and basic scheme which had the following variations on a theme. Each is a separate condition.
2 conditions said "the dwellinghouses shall not proceed above slab level until..." information was submitted and approved.
2 said "the dwellinghouses shall not be used until..." something was done.
1 said "the access shall be constructed to binder course before commencement of any dwellinghouse..."
2 said "any dwellinghouse shall not be occupied until.... " different things from those above preventing use were done.
1 said "Site clearance work and demolition shall not commence until the bat and bird house are built..." and went onto to state "and no demolition shall commence until a detailed mitigation scheme for demolition safety is first submitted to... )
To cap it all another one said "Unless otherwise approved development shall not begin until..."
Feel free to comment.