PPS 6 Planning Archaeology and the Built Heritage·Page 50
Grade B+ Listed Buildings
Grade B+ buildings are those that would have qualified for Grade A status except for detracting features, or buildings with exceptional features and qualities clearly above the standard for Grade B. There were 388 buildings in this category as of June 1997.
Grade B+ : buildings which might have merited grade A status but for detracting features such as an incomplete design, lower quality additions or alterations. Also included are buildings that because of exceptional features, interiors or environmental qualities are clearly above the general standard set by grade B buildings. A building may merit listing as grade B+ where its historic importance is greater than a similar building listed as grade B. There are 388 buildings listed in this category (June 1997).
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/PPS 6 - Planning Archaeology and the Built Heritage.pdf