Listed buildings are of special historical or architectural interest. Listed building consent must be obtained before making any changes. Almost all of the buildings along Thame High Street and the Buttermarket are listed.
Grade I
Grade II*
Grade II
Buildings can be listed at Grade II, II* or I:
Grade II buildings are of special interest. Around 91.7% of all listed buildings are in this class. It is the most likely grade of listing for a homeowner.
Around 5.8% are Grade II* buildings of particular importance.
Only 2.5% are Grade I buildings of exceptional interest.