Self Build and the Planning System: Creating Opportunities for Better Homes
Across much of Europe, self build housing is a well‑established route to delivering high‑quality homes. In the UK, however, the system remains far more challenging to navigate, and as a result, we lag significantly behind our neighbours in both the quantity and ambition of self‑built homes.
Yet self build carries enormous potential. When the people who will live in a home are directly involved in its creation, the outcome is almost always more thoughtful, better designed and more responsive to community needs. Self-building empowers individuals and groups to shape not only their homes, but the neighbourhoods they form together.
At Arbor Architects, we’re passionate about supporting anyone who wants to build their own home - whether you’re envisaging a one‑off bespoke house or exploring a more affordable, community‑led model. Our aim is to help make self build more accessible and to guide people through the planning and design processes so they can realise their ambitions.
The Two Big Challenges: Land and Planning
For most aspiring self builders, the main barriers are:
Finding a suitable plot
Navigating the planning system
Both can feel complex and opaque, but there are mechanisms within current policy that can help.
The Role of Local Authorities and the Self Build Register
Local Authorities are legally required to maintain a Self Build and Custom Housebuilding Register. By signing up, individuals signal demand for self build plots in their area. Crucially, the authority must permit enough serviced plots to match the number of people on the register within a three‑year period.
This duty is intended to expand opportunities for self builders and to encourage councils to bring forward appropriate land to match the demand.
Join the Self Build register here: https://www.herefordshire.gov.uk/planning-and-building-control/local-plan/self-build-and-custom-housebuilding/self-build-and-custom-housebuilding-register/
Planning Policy Support
Paragraph 73 of the National Planning Policy Framework (NPPF) provides a helpful hook for those promoting small sites, including self build schemes. It can support development that contributes to meeting local housing demand in a more diverse and sustainable way.
Different Models of Self Build
Self build isn’t a single approach - it spans a range of models to suit different circumstances:
Individual self build:
A single plot developed by one household.Multi‑plot sites:
A landowner or enabler prepares a site and sells serviced plots to individual self builders.Community‑led housing:
A group collectively shapes the design and delivery of the scheme, with members ultimately living in the homes created.Customisable developer homes:
A developer builds the shell or structure and buyers influence elements of the design before completion.
Large housebuilders sometimes allocate “self build plots” within large developments, but these often lack the true flexibility that defines genuine self build.
Securing Self Build Through Planning
If the self build element of a proposal is important in demonstrating planning benefits, it can be formalised through a Section 106 agreement (S106) or a Unilateral Undertaking. This ensures the plots are retained for genuine self builders and helps give the local authority confidence when weighing up the planning balance of the scheme.
How Landowners Can Enable High‑Quality Self Build
Landowners or enabling developers often seek Permission in Principle (PiP) for multi‑plot sites. Once granted, they can install infrastructure - such as utilities and access - before selling individual serviced plots to self builders.
To maintain a coherent and high‑quality neighbourhood, many enablement schemes apply design codes. These set out a framework of rules and guiding principles - covering materials, massing, landscape design and more - while still giving each self builder freedom to shape the layout and character of their own home.
Design codes help ensure individuality sits comfortably within a unified and well‑considered setting.