Code used to describe buildings in Townland Valuation of 1830s

A code was used by the valuers to describe house and offices (outbuildings). It was a combination of numbers and letters. The numbers referred to the construction of the building, particularly the walls and roof. The letters were used to describe the condition and age of the building.

 

Construction of the building
1 a building of stone that was slated.
2 a building of stone that was thatched.
 
Condition and age of the building
A a new or nearly new building.
B+ a building of medium age, but still in sound order and good repair
B a building of medium age that was slightly decayed, but still in good repair.
B- a building of medium age that had deteriorated and was not in perfect repair.
C+ an old building, but in repair.
C an old building and out of repair.
C- old and dilapidated and scarcely habitable.

Therefore, a house coded as 2B had stone walls and a thatched roof and was of medium age, slightly decayed, but in good repair. New slated houses were 1A.