London Land Commission

London Development Database

The London Development Database (LDD) is a collaborative project between the Mayor and the London boroughs to track planning activity across London.

What is the LDD?

The LDD is the system used by the Mayor to monitor planning permissions and completions across London. It has been running since 2004.

The data is provided by the London boroughs, while the Mayor co-ordinates the project and provides the IT systems that make it possible. The LDD is a vital component of the evidence base that support the London Plan, the primary source for the London Plan Annual Monitoring Report and a valuable source of information on trends in planning and development that is used by numerous mapping applications and statistical models throughout London.

What does the LDD monitor?

The LDD contains details of all planning consents meeting criteria agreed with the London boroughs. The criteria are:

  • any new build residential units
  • any loss or gain of residential units through change of use or conversion of existing dwellings
  • creation of seven or more new bedrooms for use as either a hotel, a hostel, student housing or for residential care through new build or change of use
  • 1,000m2 or more of floor space changing from one use class to another or created through new build or extension for any other use
  • the loss or gain or change of use of open space.

Only planning consents are recorded on the database. For details of applications being considered by your local planning authority, or for refusals, you must visit the relevant planning authority’s website.

How often is it updated?

The data is updated on an ongoing basis, with different deadlines for the submission of planning permissions and data on scheme commencement and completion.

  • All relevant permissions are expected to be added within three months of the end of the month in which they were granted. This means that all permissions granted in March must be on LDD by the end of June.
  • Scheme start and completion dates are checked and updated annually within five months of the end of the year. This means that information up to the end of March must be on the LDD by the end of August.

The LDD reporting period runs from 1st April to 31st March the following year, Therefore the period 2017/18 (sometimes also referred to as FY17) would run from 1st April 2017 to 31st March 2018. Data on approvals for this period would need to be submitted by the relevant planning authority by the end of June 2018 and scheme progress data by the end of August 2018. The data is regularly checked and re-evaluated, with errors corrected and missing permissions added as and when they are identified.

Planning Permission In My Area and the LDD web map

While most of the London Boroughs provide details of the planning applications they receive on their own websites, it can be difficult to get an overview across London or to view the permissions granted in a particular location where it is close to borough boundaries. We therefore provide a web map showing the locations of the live and recently completed permissions across London which is found using the 'In my area' section of this site. The LDD web map also shows recent data on a map, and also includes housing totals at both Borough and LSOA level. Links to both of these maps are provided below.

Can I have access to the data?

An extract of LDD data containing all permissions currently recorded as 'not started' or 'under construction' and all completions since 1st April 2006 can be downloaded from the London Datastore. Additional data sets can be added to the datastore upon request.

The data on the LDD is supplied by the relevant planning authority. They are responsible for the quality and completeness of the data. The planning authorities are the definitive source of information on planning applications within their boundaries.