Sale types ========== A **saletype** identifies a types of sales document. The sale types we define reflect our confidence that sales prices reveal market value. * ``deed``: deeds are our standard source of price information across most models: they refer to :ref:`transactions ` that have passed all of our "high-confidence" arms-length filters (`Nolte et al. 2024 Land Economics `_). * ``deed-zf1``: also includes medium-confidence sales * ``deed-zf0``: also includes low-confidence sales * ``full``: includes last sales information from tax assessor records (which does not permit the application of any arms-length sales filters).