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
Gregor Harvie argues that AI is state-sanctioned theft of IP.
Many resources for visitors aswell as new features for members.
Using technology to empower communities
The Community data platform; capturing the DNA of a place and fostering participation, for better design.
Heat pump and wind turbine sound calculations for PDRs
MCS publish updated sound calculation standards for permitted development installations.
Homes England creates largest housing-led site in the North
Successful, 34 hectare land acquisition with the residential allocation now completed.
Scottish apprenticeship training proposals
General support although better accountability and transparency is sought.
The history of building regulations
A story of belated action in response to crisis.
Moisture, fire safety and emerging trends in living walls
How wet is your wall?
Current policy explained and newly published consultation by the UK and Welsh Governments.
British architecture 1919–39. Book review.
Conservation of listed prefabs in Moseley.
Energy industry calls for urgent reform.
Heritage staff wellbeing at work survey.
A five minute introduction.
50th Golden anniversary ECA Edmundson apprentice award
Showcasing the very best electrotechnical and engineering services for half a century.
Welsh government consults on HRBs and reg changes
Seeking feedback on a new regulatory regime and a broad range of issues.
CIOB Client Guide (2nd edition) March 2025
Free download covering statutory dutyholder roles under the Building Safety Act and much more.