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Data Provider: Welsh Government National Statistics New dwellings completed by area, dwelling type and number of bedrooms
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Completions of new permanent dwellings

Last update
08 March 2018 08 March 2018

Next update
June 2018

Publishing organisation
Welsh Government

Source 1
New house building data collection, Welsh Government

Contact email

National Statistics

Lowest level of geographical disaggregation
Local authorities

Geographical coverage

Languages covered
English and Welsh

Data licensing
You may use and re-use this data free of charge in any format or medium, under the terms of the Open Government License - see

General description
In Wales, new house building is undertaken by the private sector, Registered Social Landlords (RSLs) and local authorities. The information presented here is based on the reports of local authority building inspectors and the National House Building Council (NHBC). It does not include information from private approved inspectors. The exclusion of this information means that there is currently an undercount in the number of dwellings completed though this is estimated to be quite small.

The information shows the number of new dwellings completed in Wales and is collected in order to assess the level of new house building across Wales during the period. The data is used to help monitor trends in both the overall level of Welsh housing stock and the changes in its tenure distribution over time. Data is also used by the Welsh Government and local authorities to assess levels of housing supply across Wales and as an indication as to whether housing need is being met.

Figures on housing completions are from records kept for building control purposes. It is sometimes difficult for data providers to identify whether a dwelling is being built for RSLs or for a private developer. This may lead to an understatement of RSL completions recorded in these tables, and a corresponding overstatement of private enterprise figures. This problem is more likely to occur with starts than completions.

New house building funded with capital grant funding includes funding via Social Housing Grant, Recycled Social Housing Grant and Strategic Capital Investment Fund.

Data collection and calculation
The information presented here is collected via quarterly returns from Local Authorities and the National Housing-Building Council (NHBC).

Frequency of publication

Data reference periods
From 1974-75 onwards

Users, uses and context
Please find this information in the related statistical publication, as per the given weblink.

Rounding applied

Revisions information
Data prior to the last period covered have been revised since previously published. Revisions are marked in the data with an (r).

As these data also form part of other data collections, for example counts of properties which are compliant with the Welsh Housing Quality Standard, it is possible that the data will be subject to minor revision in due course. If necessary, for example where revisions are significant, these amendments will also be included in a revised formal release of data (see weblinks).

Statistical quality
Please find this information in the related statistical publication, as per the given weblink.

Housing, New House Building, Starts, Completions, National House Building Council