Gross site area
For the purposes of determining housing density, ‘gross site area’ is the total land area as part of the development. Infrastructure and services serving a wider area (such as parks and open space) are considered part of the gross site area. This includes:
- Major distributor roads.
- Primary schools, churches, shopping areas etc.
- Open spaces serving the wider areas.
- Significant landscape buffering strips.
Net site area is the land that is available for development. It is also referred to as the area of developable land. The net site area is more than the land for dwellings and private space and includes other areas that contribute to the use and enjoyment directly linked to the developed dwellings. This includes:
- Access roads within the site.
- Private garden space.
- Car parking space.
- Incidental open space.
- Children’s play areas.
In planning practice it is common to determine net site area as a percentage of gross site area, known as the gross to net ratio.
Ref Telford & Wrekin Council Local Plan 2011 – 2031 Technical Paper. Density and net site area study, July 2015.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Licensing construction in the UK
As the latest report and proposal to licence builders reaches Parliament.
Building Safety Alliance golden thread guidance
Extensive excel checklist of information with guidance document freely accessible.
Fair Payment Code and other payment initiatives
For fair and late payments, need to work together to add value.
Pre-planning delivery programmes and delay penalties
Proposed for housebuilders in government reform: Speeding Up Build Out.
High street health: converting a building for healthcare uses
The benefits of health centres acting as new anchor sites in the high street.
The Remarkable Pinwill Sisters: from ‘lady woodcarvers’ to professionals. Book review.
Skills gap and investment returns on apprenticeships
ECA welcomes new reports from JTL Training and The Electrotechnical Skills Partnership.
Committee report criticises UK retrofit schemes
CIOB responds to UK’s Energy Security and Net Zero Committee report.
Design and construction industry podcasts
Professional development, practice, the pandemic, platforms and podcasts. Have we missed anything?
C20 Society; Buildings at Risk List 2025
10 more buildings published with updates on the past decade of buildings featured.
Boiler Upgrade Scheme and certifications consultation
Summary of government consultation, closing 11 June 2025.
Deputy editor of AT, Tim Fraser, discusses the newly formed society with its current chair, Chris Halligan MCIAT.
Barratt Lo-E passivhaus standard homes planned enmasse
With an initial 728 Lo-E homes across two sites and many more planned for the future.
Government urged to uphold Warm Homes commitment
ECA and industry bodies write to Government concerning its 13.2 billion Warm Homes manifesto commitment.
From project managers to rising stars, sustainability pioneers and more.
Places of Worship in Britain and Ireland, 1929-1990. Book review.
The emancipation of women in art.