Provision of affordable housing through planning obligations and on exception sites by authority and planning type

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2 of 2 selected
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Next update expected:November 2026

Updates

13th November 2025
Dataset first published.

Main information

Designation
Accredited official statistics
Data provider
Local Authorities
Data source
No specific source from data provider
Time period covered
April 2007 to March 2025

Overview

Summary of dataset and variables

The information presented here relates to the number of additional affordable housing units granted planning permission and the number of additional units delivered within each planning authority area in each year. The planning authorities in Wales are the 22 local authorities and the 3 national park authorities. The data shown are the numbers of affordable housing units granted planning permission and delivered under planning obligations and on affordable housing exception sites.

The focus of this dataset is on additional affordable housing units delivered, and these are defined as those provided through new build schemes or through the purchase, leasing or conversion of existing units. This therefore excludes existing affordable units that have been renovated or refurbished, as they are not classed as being additional. However, where an existing unit has been converted into two separate units, then this represents an additional affordable unit delivered. Conversely where there was a net loss of affordable units within a property over the year there are no additional affordable housing units delivered. For example, if two self contained flats in one property were converted into one family home, then the number of additional units is classed as zero, although note that that is not recorded as a negative change to the number of additional units delivered.

In this context, delivered means that the unit is completed and is available for occupation.

Planning obligations (or Section 106 agreements) are arrangements to overcome obstacles which may otherwise prevent planning permission from being granted. These may be used to offset negative consequences of development, to help meet local needs or to secure benefits which would make a development more sustainable.

Affordable housing exception sites are small scale housing sites within or adjoining existing settlements for the provision of affordable housing to meet local needs, which would not otherwise be allocated in the development plan.

Data collection or calculation

The information presented here is collected via annual returns from Welsh planning authorities on the actual affordable housing provision delivered during each year.

Statistical quality

Please find this information in the related statistical publication, as per the given weblink:

Related reports

Published by

Organisation
Welsh Government
Contact email
stats.housing@gov.wales