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The planning design rulebook just got rewritten. Here’s what every developer needs to know

06 March 2026

The government's new Design and Placemaking Planning Practice Guidance marks the biggest shake-up to English design policy in a generation - replacing vague notions of 'beauty' with hard numbers, binary rules, and a paper trail. Ajai Paul, James Smith, and Martyn Few of Ridge & Partners decode what it means in practice.

For years, planning arguments about design have often been just that – arguments. One officer’s vision of a ‘well-designed street’ is another’s missed opportunity. That era may now be drawing to a close. 

Published in January 2026, the government’s new draft Design and Placemaking Planning Practice Guidance (PPG) replaces three separate documents – the National Design Guide, the National Model Design Code, and the Design: Process and Tools PPG – with a single, consolidated framework. The message from the Ministry of Housing, Communities and Local Government (MHCLG) is clear: good design is no longer a matter of taste. It’s a matter of compliance. 

From ‘nice to have’ to ‘must’ 

The new PPG hands Local Planning Authorities (LPAs) sharper teeth. Under NPPF Paragraph 134, councils can now refuse applications that fail to meet codified design benchmarks – not just those that look wrong, but those that can be measured as wrong. 

The guidance distils design quality into seven interdependent features: Liveability, Climate, Nature, Movement, Built Form, Public Space, and Identity. These aren’t aspirations – they’re technical mandates. And they have to work together. Skimping on one undermines the rest. 

The reduction from ten interdependent features to seven represents a significant oversightmost notably the removal of Context. Imasterplanning, context is the essential prerequisite; it is the spatial and social logic that prevents a development from existing in a vacuum. By stripping away the requirement for a scheme to demonstrate site-responsiveness and mutual benefit, the new framework risks losing its urbanistic foundation. A high-performance building that fails to integrate with the local grain is, by definition, a failure of design.

 

Ajai Paul, Senior Urban Designer

At Ridge, we see this shift as a massive opportunity to provide our clients with certainty in an increasingly regulated landscape. Our approach is to ensure every masterplan rigorously satisfies the seven technical mandates as a data-backed defence against refusal, while simultaneously treating Contextual Intelligence as our primary tool to de-risk the planning process. By layering deep character appraisals and site-responsivity over these technical benchmarks, we move beyond the “whims” of committees toward a structured “path to yes.” These “sharper teeth” in the PPG effectively transition high-quality urban design from a discretionary luxury into a bankable, future-proofed necessity. We don’t just help our clients achieve planning consent; we help them deliver resilient, market-leading masterplans that are intrinsically woven into their environment.    

A few headlines from the seven features: 

  • Streets must be designed for people first. Active frontages, permeable blocks, and movement networks that prioritise walking and cycling over the car are no longer optional extras. 
  • Climate resilience is baked in from day one. Green and blue infrastructure, urban shading, and sustainable drainage systems must be considered at the very start of the design process – not retrofitted at the end. 
  • Biodiversity gets structural status. Swift bricks, bee bricks, hedgehog highways – the language of nature-inclusive design is now written into the regulatory framework, referencing Natural England’s Green Infrastructure Framework. 
  • Character must be earned. Architectural identity can’t just be declared – it has to be derived from rigorous analysis of local context, history, and materials. 

The end of ‘viability-led’ design erosion? 

One of the most significant shifts in the new PPG is the attempt to kill off design-by-negotiation. The familiar pattern – a developer submits a strong scheme, then watches it diluted through rounds of viability argument and reserved matters – is precisely what the new framework targets. 

The PPG formalises a three-stage process. First, LPAs must conduct a proper baseline assessment of local character. Second, they produce Area-Specific Spatial Diagrams – visual, three-dimensional tools that translate policy into clear spatial expectations. Third, those expectations become Design Codes: illustrated documents with numeric and binary parameters covering everything from setback distances to building heights and plot ratios. 

The point? Objective compliance checks that leave little room for late-stage haggling. Instead of arguing about whether a street ‘feels’ active enough, codes may simply mandate that at least 80% of frontage on a primary route must be active. Either it is, or it isn’t. 

More work upfront – but a clearer path to yes 

For developers and their consultants, the short-term reality is more demanding pre-submission work. 3D modelling, digital massing analysis, rigorous evidence-gathering – the bar for submitting an application has risen. Expect pre-application phases to take longer and cost more. 

But the promise – if the system works as intended – is a more predictable journey to consent. Replace subjective design commentary with objective parameters, and the protracted post-submission negotiations that have long stalled delivery should reduce. Front-load the hard work, and the back end becomes less of a lottery. 

The PPG also introduces a requirement for Post-Occupancy Evaluation (POE) -technical monitoring of energy performance and air quality, combined with resident feedback, typically 6 -12 months after occupation. Design isn’t done at handover anymore. Accountability now extends into the life of a building. 

Early-stage engagement is the key to project longevity and consensus. At Ridge, we ensure that Planners, Urban Designers, Architects, and Specialists across landscape and transport are involved from the outset. Putting everyone’s expertise and comments on the table during the initial design phase minimises friction and guarantees a mutually agreed-upon outcome. A well-designed place is not just the work of one discipline, but the result of a shared vision established at the very beginning.

 

Ajai Paul, Senior Urban Designer

The bottom line 

The 2026 PPG won’t please everyone. More front-loaded process means more cost and complexity early in a project. LPAs will need to invest significantly in spatial analysis and code-making capacity – the government’s Model Design Code library is there to help, but local authorities are stretched. 

But the direction of travel is unambiguous. Design quality in England is moving from the subjective to the measurable – from taste to technical specification. The profession’s response to this shift will define which practices lead in the next decade of development. 

Want to know how this affects your portfolio? 

Contact Martyn Few, Partner of Architecture and Urban Design at Ridge & Partners LLP