Planning Permission in Southwark: What Developers Need to Know

## Southwark's Planning Framework Understanding how planning works in Southwark is essential for any developer operating in the borough. Planning decisions directly affect what you can build, how much it costs, and ultimately whether your project is financially viable and fundable. This guide covers the key elements of Southwark's planning environment that developers need to understand. ### Key Policy Documents Southwark's planning decisions are guided by several layers of policy: - **The London Plan** (adopted 2021): The strategic spatial plan for Greater London, setting overarching policies on housing targets, affordable housing, design quality, and tall buildings - **The New Southwark Plan**: The borough's local plan, setting out site-specific policies, area visions, and development management policies for the borough - **Area Action Plans**: Detailed planning frameworks for major opportunity areas including Elephant & Castle, Canada Water, Peckham & Nunhead, and the Old Kent Road - **Supplementary Planning Documents**: Detailed guidance on specific topics including residential design standards, affordable housing, and sustainability These documents are publicly available on Southwark Council's website and should be consulted before purchasing any development site. ## Types of Planning Application ### Full Planning Permission A full planning application provides detailed consent for a specific development proposal. It covers the design, scale, layout, access, and appearance of the proposed scheme. Full permission is typically valid for three years from the date of approval, within which time development must commence. For most Southwark development projects — new build schemes, major conversions, changes of use — full planning permission is required. Application fees are set nationally and depend on the type and scale of development. ### Outline Planning Permission Outline permission establishes the principle of development on a site without fixing all the details. Reserved matters (appearance, landscaping, layout, scale, access) are approved subsequently. Outline permission is less common for smaller Southwark projects but is used for larger phased schemes where the developer wants to establish the principle before committing to detailed design. ### Prior Approval (Permitted Development) Certain types of development can proceed without full planning permission under permitted development rights. The most relevant for Southwark developers is Class MA (formerly Class O), which allows change of use from commercial, business, and service use (Class E) to residential (Class C3) subject to a prior approval process. Prior approval in Southwark requires the council to assess: - Transport and highways impact - Contamination and flooding risk - Impact on the sustainability of an adequate provision of commercial and business services - Natural light in all habitable rooms - Impact on the character of the area (for conservation areas) Prior approval is quicker and cheaper than full planning but comes with limitations — no affordable housing contribution is required, but the council can refuse on specific grounds. Several successful permitted development conversions have been delivered in Borough and Bermondsey. ### Certificate of Lawful Development A CLEUD (Certificate of Lawful Existing Use or Development) or CLOPUD (Certificate of Lawful Proposed Use or Development) confirms that a development or use is lawful without the need for planning permission. This is useful for confirming that permitted development rights apply to a specific property. ## Affordable Housing in Southwark Affordable housing policy is one of the most significant factors affecting development viability in Southwark. The council's policy position is: - **35% affordable housing** on schemes of 10 or more units (the "threshold" approach aligned with the London Plan) - The affordable element should be split between social rent, London Affordable Rent, London Living Rent, and shared ownership, with the council expressing a strong preference for genuinely affordable tenures - Developers meeting the 35% threshold with an appropriate tenure mix can follow the "Fast Track" route, which does not require a viability assessment - Schemes providing less than 35% must submit a Financial Viability Assessment demonstrating that 35% is not achievable while maintaining a reasonable developer return (typically defined as 15-20% profit on GDV) ### Impact on Development Finance Affordable housing obligations directly affect your development appraisal and therefore your ability to secure finance. Affordable units are typically transferred to a registered provider at values significantly below open market — often 40-60% of market value. This reduces your overall GDV and therefore the quantum of debt available. Lenders experienced in Southwark understand this dynamic and will model affordable disposals at appropriate values. ## Conservation Areas and Listed Buildings Southwark has numerous conservation areas, and development within or affecting them is subject to additional scrutiny. Key conservation areas that developers frequently encounter include: - **Bermondsey Street**: Victorian and Edwardian warehouses and commercial buildings requiring sensitive conversion approaches - **Camberwell Grove**: Georgian and Victorian residential streets with strict controls on external alterations - **Dulwich Village**: Managed by the Dulwich Estate with additional design standards on top of council requirements - **Borough High Street**: Medieval street pattern with numerous listed buildings and archaeological interest - **Rotherhithe Village**: Maritime heritage around St Mary's Church and the river ### What Conservation Area Status Means for Developers - **Demolition requires consent**: You cannot demolish buildings in a conservation area without specific consent, even if they are not individually listed - **Article 4 Directions**: Many Southwark conservation areas have Article 4 directions removing permitted development rights, meaning even minor external changes require planning permission - **Design scrutiny**: New development and alterations must preserve or enhance the character of the conservation area, often requiring traditional materials, appropriate proportions, and sympathetic design - **Higher build costs**: Conservation requirements typically add 10-20% to build costs compared to an unconstrained site, due to specialist materials, traditional construction methods, and more detailed design work ### Listed Buildings Southwark contains hundreds of listed buildings, from medieval churches to Victorian warehouses. Any works affecting the character of a listed building require Listed Building Consent in addition to planning permission. This is a separate application with its own assessment criteria focused on heritage significance. Conversion of listed buildings can be highly profitable — the heritage character commands premium values — but requires specialist architectural and conservation expertise. ## The Pre-Application Process Southwark Council offers a pre-application advice service, and we strongly recommend using it for any project of substance. Pre-application discussions: - Establish the council's in-principle view on your proposed development - Identify potential planning issues and policy conflicts early - Provide an opportunity to discuss design, scale, and massing before committing to a full application - Can significantly reduce the risk of refusal by allowing you to address concerns before the formal submission Pre-application advice is charged by the council on a tiered basis depending on the scale of the proposed development. For major schemes, you may have multiple pre-application meetings with the planning officer and potentially a Design Review Panel session. ## Tips for Planning Success in Southwark Based on our experience working with developers across the borough, here are practical recommendations: 1. **Read the policy first**: Before purchasing a site, read the relevant area action plan and any site-specific allocations in the New Southwark Plan. Many sites have specific policy requirements that constrain what can be built. 2. **Engage early with planning officers**: The pre-application process is invaluable. A positive pre-application response also strengthens your development finance application. 3. **Appoint the right architect**: An architect with Southwark experience knows the council's design expectations and can navigate the process more efficiently than one without local knowledge. 4. **Be realistic about affordable housing**: Trying to avoid or minimise affordable housing obligations through aggressive viability assessments can delay applications and damage your relationship with planning officers. Where the policy requires 35%, plan for it from the outset. 5. **Consider community engagement**: For larger schemes, early engagement with local residents and community groups can build support and reduce the risk of objections that could delay or derail your application. 6. **Allow realistic timescales**: Minor applications in Southwark typically take 8-12 weeks, while major applications can take 16-26 weeks or longer if committee consideration is required. Factor these timescales into your project programme and cash flow planning. 7. **Understand cumulative costs**: Planning application fees, CIL, Section 106 contributions, and the cost of consultants' reports (including design and access statements, transport assessments, sustainability statements, ecology surveys, and heritage assessments) should all be budgeted at the outset. Planning is not just a regulatory hurdle — it is a core part of your development strategy. The best developers in Southwark work with the planning system, not against it, and the results are better projects that achieve higher values and smoother funding.