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Building Compliance in Southwark
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Southwark housing: plan improvements around occupied buildings
ONS records that 39.7% of Southwark households lived in social rented housing in 2021, down from 43.7% in 2011. That is a tenure measure, not a count of buildings needing work. For housing providers, the Census housing evidence provides context for planning improvements across occupied homes rather than treating compliance solely as a new-build exercise.
Southwark’s October 2025 Climate and Environment SPD recommends a fabric-first approach to retrofit, with a whole-building retrofit plan and consideration of overheating in existing buildings. Use retrofit assessments to establish a sequence for insulation and ventilation changes. The SPD’s retrofit guidance supports considering building elements together, so a window replacement or insulation package should not be assessed without its effects on summer comfort and moisture.
Southwark rental projects: establish the licence route first
Southwark’s mandatory licensing guidance describes large HMOs as homes with at least five tenants forming more than one household and sharing facilities. Its additional scheme covers HMOs outside mandatory licensing, including shared HMOs with a maximum of four occupiers and specified converted buildings. Record occupancy, facilities and ownership before deciding which application route applies to a conversion.
The council also operates selective licensing for other privately rented homes in named wards. These include Champion Hill, Newington, Faraday, Goose Green, St Giles, Old Kent Road, Peckham and Rotherhithe, among others. Check the council’s full list and address map rather than assuming a small rented flat is outside licensing because it is not an HMO.
Southwark’s licence conditions guidance connects licensing with minimum energy efficiency standards and requires common-parts fire risk assessments for multi-occupied residential properties. Arrange fire risk assessments around the shared areas and review EPC evidence for the rented dwelling. These are separate records: an energy certificate does not establish that communal escape arrangements are satisfactory.
Services in Southwark
New homes and conversions
- Air tightness testing in Southwark
- Sound insulation testing in Southwark
- Ventilation testing in Southwark
- MVHR commissioning in Southwark
- SAP calculations in Southwark
- Home energy model in Southwark
- U-value calculations in Southwark
- Thermal bridging calculations in Southwark
- Condensation risk analysis in Southwark
- Water calculations in Southwark
- Background ventilation calculations in Southwark
- Overheating assessments in Southwark
- CIBSE TM59 and TM52 assessments in Southwark
- Party wall and ceiling design in Southwark
- Party floor design in Southwark
- Regulation 25A reports in Southwark
Commercial and public buildings
Existing buildings and refurbishment
Planning applications
Southwark applications: match reports to the proposal
The full planning checklist defines minor proposals as up to nine homes or up to 1,000 square metres of floorspace, and major proposals as ten or more homes or over 1,000 square metres. Its major-application section asks for an energy statement showing on-site carbon reductions, assessed heat sources and energy-hierarchy percentages. Scope energy statements alongside the drawings, not after the heating strategy has been fixed.
The same Southwark checklist asks for BREEAM information with all major applications and a standalone Be Seen monitoring template. A sustainability statement can organise the wider commitments, but it should not be presented as a substitute for either named submission. Keep the proposed measures, modelling assumptions and monitoring responsibilities consistent across the application documents.
For noise-sensitive development likely to be affected by existing noise, the checklist’s noise assessment requirement calls for an assessment by a suitably qualified acoustician. It also addresses noisy uses and plant equipment. Commission noise surveys before settling window and ventilation specifications, then use acoustic design to translate the findings into a buildable proposal.
Southwark Plan standards for water and summer comfort
The Southwark Plan 2022 was adopted on 23 February 2022 and covers 2019 to 2036. The October 2025 Climate and Environment SPD explains how its environmental policies apply. The SPD’s minimum requirements distinguish mandatory standards from best practice, so the design brief should identify which target it is committing to rather than mixing the two.
| Southwark policy subject | Evidence to coordinate |
|---|---|
| P67 Reducing water use | Residential potable water target: 105 litres per person per day, excluding an external allowance of 5 litres or less. Use water calculations to check the selected fittings. |
| P69 Sustainability standards | Follow the cooling hierarchy, starting with limiting heat entering the building. Test shading and glazing before relying on active cooling. |
| P70 Energy | Consider carbon reduction through the energy hierarchy. Align fabric, heating and generation assumptions with the energy statement. |
Source: Source: Climate and Environment SPD, October 2025, minimum requirements tables 3, 5 and 8.
Southwark energy evidence alongside the London Plan
Southwark’s checklist expressly links local policy P70 with London Plan 2021 policy SI 2. The London Plan 2021 provides the strategic policy context; London Plan energy assessments should therefore explain the local and London requirements together. A calculation prepared for Building Regulations alone does not explain every planning commitment listed in Southwark’s energy statement requirements.
The Southwark climate SPD recommends TM59 dynamic modelling with London-specific TM49 weather data for major residential development. Use overheating assessments while layouts can still change. Its cooling hierarchy gives a reason to compare shading, glazing and ventilation options before adding cooling equipment. Pair this work with water calculations so the environmental submission includes the specified fittings as well as the thermal model.
Southwark approval records for construction
Southwark Council publishes separate planning services and building regulations services, including a building control register. Keep planning reports and construction compliance evidence in separate, cross-referenced schedules. For a Southwark housing project whose energy statement sets fabric assumptions, SAP calculations can carry those assumptions into the dwelling compliance work without treating planning acceptance as building regulations approval.
Building compliance questions in Southwark
Does a Southwark HMO licence give planning permission?
No. Southwark’s HMO guidance separates the two. It says planning permission is needed for HMOs for seven or more people, or within an Article 4 direction area regardless of occupancy. Check both routes before changing the letting arrangement.
Does Southwark ask for an energy statement on major applications?
Yes. The major-application checklist asks for the GLA energy statement, including on-site carbon reductions, heat-source options and energy-hierarchy percentages. It cites Southwark Plan P70 and London Plan SI 2.
What water target should a Southwark residential specification use?
The October 2025 climate SPD gives a minimum potable water target of 105 litres per person per day, excluding an external allowance of five litres or less. Its separate 80-litre figure is best practice, not the same minimum requirement.
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