The source explains (citation):
The December 2016 release of data includes revisions to historical data arising from a change in data processing methodology [...] During 2016 a query system became available to the Department that enabled the commencements notice data to be extracted at record level. This system enabled the Statistics and Data Analytics Unit (SDAU) to introduce a range of record level checks on the dataset before publication. This revision is as a result of the first set of these checks being instigated and applied across the full dataset.
In response, we have archived the predecessors (March 2014 to November 2016) by renaming with an "_16" specifier, by marking metadata as "discontinued" and by segregating in the catalog. The replacements start at March 2014. Figures are unitary counts (#) not seasonally adjusted (NSA).
The series reside in the historical catalog (Ireland » Real estate » Residential » Stage of construction » Starts) and include, for example:
- HSQSTRNRU_16UM.IIRL_1201 = [DISCONTINUED] Number of units associated with commencement notices - New residential dwellings, (#, NSA) - for Laois County
- HSQSTRNRUUM.IIRL_1201 = Number of units associated with commencement notices - New residential dwellings, (#, NSA) - for Laois County
- HSQSTRNHOUUM.IIRL_1204 = Number of units associated with commencement notices - New residential dwellings - One-off units, (#, NSA) - for Westmeath County
Because catalog locations are subject to change, the upper-right search box on DataBuffet.com provides a "find in catalog" mode that accepts a mnemonic.
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