Permitted Development vs Full Planning Permission - and Common PD Mistakes
Most projects begin by asking:
'Can this be done under Permitted Development?'
It’s a good place to start. But it’s not always the right place to finish.
Permitted Development (PD) and Full Planning Permission are not competing routes – they’re different tools. Each offers opportunity. Each comes with limitations. Understanding when to use one over the other is where good projects begin.
Permitted Development: Defined Opportunity
Permitted Development is about working within a set of fixed rules. If your proposal stays within those parameters – size, height, position – you can often build without applying for planning permission.
It offers:
Speed
Certainty (when properly assessed)
Reduced planning risk
But it also comes with constraints. Designs are often shaped by what just fits within the limits. That can lead to solutions that are efficient – but not always optimal.
Full Planning: Designed Freedom
Full Planning Permission allows for a broader, more considered design response. Instead of working to strict dimensional limits, you’re making a case:
Why this scale works
How it responds to context
What it adds to the site and surroundings
It introduces more uncertainty. But it also opens up better design opportunities.
Choosing the Right Route...
We test both paths early.
What can be achieved under PD?
What improves with planning
Where is the balance between certainty and quality?
Sometimes PD delivers exactly what’s needed. Sometimes it restricts the potential too much. The right route is rarely about avoiding planning. It’s about choosing the best outcome.
Common Permitted Development Mistakes
Permitted Development appears straightforward. But it’s often where the most avoidable issues occur.
1) Assuming It Applies: Not all properties have PD rights. Flats, listed buildings, and homes in certain areas may be excluded—or have rights removed entirely.
2) Getting the Measurements Wrong: PD rules are precise. Small miscalculations – particularly around height, depth, or ground levels—can invalidate the entire scheme.
3) Ignoring Boundaries: Distances to boundaries, eaves heights, and proximity to neighbouring properties are critical. These details are often misunderstood.
4) Overlooking Materials: PD requires materials to be similar in appearance to the existing house in many cases. A design decision can quickly become a compliance issue.
5) Skipping the Certificate: Proceeding without a Lawful Development Certificate leaves room for doubt. If challenged later, proving compliance can be difficult.
6) Designing to the Limit, Not the Outcome: Just because something fits within PD doesn’t mean it’s the best solution. Spaces can feel compromised when the design is driven purely by maximum allowances.
A Better Way to Begin
Permitted Development offers efficiency. Planning offers flexibility. The most successful projects understand both – and use them deliberately. Because good design isn’t about fitting inside a rule. It’s about knowing when to follow it – and when to move beyond it.
Permitted Development vs Full Planning Permission — and Common PD Mistakes
Permitted Development vs Full Planning Permission - and Common PD Mistakes
Most projects begin by asking: 'Can this be done under Permitted Development?'
It’s a good place to start. But it’s not always the right place to finish.
Permitted Development (PD) and Full Planning Permission are not competing routes – they’re different tools. Each offers opportunity. Each comes with limitations. Understanding when to use one over the other is where good projects begin.
Permitted Development: Defined Opportunity
Permitted Development is about working within a set of fixed rules. If your proposal stays within those parameters – size, height, position – you can often build without applying for planning permission.
It offers:
But it also comes with constraints. Designs are often shaped by what just fits within the limits. That can lead to solutions that are efficient – but not always optimal.
Full Planning: Designed Freedom
Full Planning Permission allows for a broader, more considered design response. Instead of working to strict dimensional limits, you’re making a case:
It introduces more uncertainty. But it also opens up better design opportunities.
Choosing the Right Route...
We test both paths early.
Sometimes PD delivers exactly what’s needed. Sometimes it restricts the potential too much. The right route is rarely about avoiding planning. It’s about choosing the best outcome.
Common Permitted Development Mistakes
Permitted Development appears straightforward. But it’s often where the most avoidable issues occur.
A Better Way to Begin
Permitted Development offers efficiency. Planning offers flexibility. The most successful projects understand both – and use them deliberately. Because good design isn’t about fitting inside a rule. It’s about knowing when to follow it – and when to move beyond it.