BCMS Commencement Notices 2014

A Commencement Notice (CN) is a notification to a Building Control Authority (BCA) that a person intends to carry out either works or a Material Change of Use to which the Building Regulations apply. The notice must be given to the authority not more than 28 days and not less than 14 days before the commencement of works or the change of use. Once validated by the building control authority, works must commence on site within the 28 day period.

In the case of large developments, it is practical to submit a CN for each phase. The number of units scheduled to commence under a specific phase should be recorded in the CN.

The Local Government Management Agency (LGMA) operates the Building Control Management System (BCMS). It facilitates CNs to be submitted online. The Department cleans and collates the data before publishing it on a monthly basis.

This data series on commencement notices is available from March 2014. It is broken down by local authority, number of notices for residential development, number of residential units and the number of one-off residential units. More granular data on commencement notices can be found at https://www.localgov.ie/

Data from March to May 2019 has been revised. The figures for those months were originally under-stated due to a data processing error.

开工通知书（Commencement Notice，缩写CN）是指向建筑监管当局（Building Control Authority，缩写BCA）提交的通知，用以告知相关方拟开展属于《建筑条例》监管范畴的工程或实质性用途变更。该通知书需在工程开工或用途变更实施前14至28天内提交至监管当局。经建筑监管当局审核通过后，相关工程需在28天内于现场开工。

针对大型开发项目，按各阶段分别提交开工通知书更为务实。各阶段拟开工的住宅单元数量需在开工通知书中予以记录。

地方政府管理署（Local Government Management Agency，缩写LGMA）运营建筑监管管理系统（Building Control Management System，缩写BCMS），该系统支持开工通知书的线上提交。相关部门会对数据进行清洗与整理，随后按月发布。

本开工通知书数据集的时间跨度始于2014年3月，数据按地方当局、住宅开发类开工通知书数量、住宅单元总数及独栋住宅单元数量进行分类统计。更细粒度的开工通知书数据可访问https://www.localgov.ie/获取。

2019年3月至5月的数据已完成修订。由于此前的数据处理失误，该时段的原始统计数值曾被低估。