The DC Department of Consumer and Regulatory Affairs has made this data available. This dataset contains records of building construction and alteration permits.
This data is released on an annual basis - we display data from 2013-2017. The latest data for 2017 (partial) can be found at OpenData DC.
Basic cleaning was performed on this data, including replacement of null values and normalization of dates and census tract/ward names.
This data source is used with permission from OpenData DC.