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Building Compliance in Croydon
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Croydon Metropolitan Centre: plan the conversion evidence
The Croydon Local Plan 2018, dated 27 February 2018 identifies rejuvenating Croydon Metropolitan Centre and creating a new residential community alongside jobs as a local challenge. For a developer considering an office conversion or mixed-use scheme, that makes the relationship between homes and retained commercial activity an early design question, rather than something to leave until fit-out.
Croydon’s Local Validation List, May 2026 requires an Agent of Change Assessment for major proposals and advises smaller noise-sensitive or noise-generating applications to provide one too. Before fixing bedroom positions, commission noise surveys to establish relevant sources and use acoustic design to test the proposed separation. Do not assume that changing an office layout into flats resolves the effects of neighbouring uses.
Croydon’s May 2026 report requirements
The May 2026 validation list requires an Energy Assessment for major developments, demonstrating net-zero carbon against the development plan and including any necessary carbon-offset calculation. Its Energy Design Statement entry says all minor residential proposals should explain clean-energy solutions and the amenity effects of external equipment. An energy statement should therefore match the application scale and show the actual proposed fabric, heating and renewable systems, not simply attach a building-regulations calculation.
For non-residential minor development involving installation, alteration or replacement of plant, ventilation, extraction or air-conditioning equipment, the same Croydon checklist asks for a Ventilation / Extraction Statement covering location, design, odour control and acoustic characteristics. It allows combination with the noise assessment where appropriate. Coordinate the plant schedule with commercial and industrial noise surveys; a commissioning test alone would not explain the proposed equipment’s planning effects.
Services in Croydon
New homes and conversions
- Air tightness testing in Croydon
On-site testing that measures how much air leaks through a building's envelope, with a certificate for Building Control.
- Sound insulation testing in Croydon
Pre-completion testing of separating walls and floors between homes, reported in the form Building Control expects.
- Ventilation testing in Croydon
Airflow measurement of extract fans and ventilation systems, recorded for the Building Control completion file.
- MVHR commissioning in Croydon
Setting up and measuring a mechanical ventilation with heat recovery system, with commissioning records for handover.
- SAP calculations in Croydon
The energy calculation for new homes and conversions, from design stage figures to the as-built result.
- Home energy model in Croydon
Assessment under the Home Energy Model, the government's planned replacement for SAP.
- U-value calculations in Croydon
Calculated U-values for walls, floors and roofs, set out in a document Building Control can check against the limits.
- Thermal bridging calculations in Croydon
Calculated psi-values for junctions, replacing default values in SAP and SBEM with measured detail.
- Condensation risk analysis in Croydon
Analysis of how moisture moves through a wall, roof or floor build-up, showing whether condensation risk is acceptable.
- Water calculations in Croydon
The water efficiency calculation for new homes, showing estimated daily use per person against the target.
- Background ventilation calculations in Croydon
Calculations that size trickle vents and background ventilation for each room, ready for Building Control.
- Overheating assessments in Croydon
Overheating assessment for new homes, using the simplified method where it applies.
- CIBSE TM59 and TM52 assessments in Croydon
Dynamic thermal modelling of overheating risk, assessed against CIBSE TM59 for homes and TM52 for other buildings.
- Party wall and ceiling design in Croydon
Design review of separating wall constructions between homes, so they are built to pass sound testing.
- Party floor design in Croydon
Design review of separating floor constructions between flats, so they are built to pass sound testing.
- Regulation 25A reports in Croydon
The report on high-efficiency alternative energy systems required for new buildings under Regulation 25A.
Commercial and public buildings
- SBEM calculations in Croydon
The energy calculation for new and altered non-domestic buildings, with the BRUKL output Building Control asks for.
- Display energy certificates in Croydon
Display Energy Certificates showing the actual energy use of public buildings, with the advisory report.
- Smoke shaft and AOV testing in Croydon
Testing of smoke shafts and automatic opening vents to confirm they operate as designed.
- Fire risk assessments in Croydon
A written assessment of fire risk in a building's common or work areas, with the actions needed to reduce it.
- Legionella risk assessments in Croydon
An assessment of a building's water systems that identifies legionella risk and the controls needed.
- Commercial and industrial noise surveys in Croydon
Assessment of sound from commercial and industrial sources under BS 4142.
- Entertainment and night club noise surveys in Croydon
Noise assessment for bars, clubs and venues, and for homes planned near them.
Existing buildings and refurbishment
- Asbestos surveys in Croydon
Surveys that find and record asbestos-containing materials, and explain which survey type a building needs.
- Management asbestos survey in Croydon
A survey of the accessible parts of an occupied building so the dutyholder can manage asbestos during normal use.
- Refurbishment and demolition survey in Croydon
An intrusive survey of the areas affected by planned refurbishment or demolition, carried out before work starts.
- Pre-purchase asbestos survey in Croydon
An asbestos survey arranged before buying a property, so the buyer knows what is present and where.
- Retrofit assessments in Croydon
A whole-house assessment of a home's condition and energy use, used to plan retrofit measures.
- Borescope inspections in Croydon
Camera inspection of cavities and voids through small holes, without opening up the structure.
- EPC in Croydon
Energy Performance Certificates for homes and commercial buildings that are built, sold or let.
Planning applications
- Energy statements in Croydon
Energy statements written for planning applications, setting out how a scheme meets the council's energy policy.
- London plan energy assessments in Croydon
Energy assessments for London schemes, following the Mayor's energy hierarchy and carbon reporting requirements.
- Sustainability statements in Croydon
Sustainability statements for planning applications, covering the topics the council's policies ask for.
- Acoustic design in Croydon
Acoustic design advice from the early stages of a project, so construction details meet sound requirements.
- Noise surveys in Croydon
Noise impact assessment for planning applications, and the starting point for the specific noise surveys below.
- Environmental noise survey in Croydon
Measurement of existing noise levels at a site, used to inform design and planning submissions.
- Residential noise surveys in Croydon
Noise assessment for new homes, showing that internal and external noise levels will be acceptable.
- Road and rail noise surveys in Croydon
Assessment of road and railway noise affecting a proposed development.
SP6 and DM23: Croydon’s design evidence
Policy SP6.3 of the Croydon Local Plan 2018 sets a water-efficiency standard of 110 litres per person per day for all new-build residential development. Prepare water calculations against the proposed fittings before procurement. Substituting taps, showers or sanitaryware can change the result, so give the builder a fittings schedule that agrees with the calculation rather than treating it as an isolated certificate.
The same SP6.3 policy sets BREEAM Excellent or equivalent for new-build non-residential schemes of at least 500 square metres, and Very Good or equivalent for non-residential conversions and changes of use at that scale. A sustainability statement can organise the supporting evidence but does not replace the required rating. Policy DM23 also addresses pollution and mitigation: coordinate acoustic design with equipment selection instead of specifying noise treatment after the plant location is fixed.
Croydon policy alongside the London Plan 2021
Croydon identifies the Mayor’s plan as part of its development plan, alongside its local plan. The London Plan 2021, published 1 March 2021 therefore needs to be read with the borough policies, not treated as an alternative. Use London Plan Energy Assessments to explain the applicable London requirements and Croydon’s SP6 energy hierarchy in one coordinated submission.
London Plan Policy SI 4 requires major proposals to show through an energy strategy how they reduce internal overheating and reliance on air conditioning. For Croydon housing proposals, arrange overheating assessments while shading, glazing and ventilation can still change. Where the Croydon noise assessment identifies restrictions on opening windows, give those restrictions to the thermal modeller so the two reports do not depend on incompatible operating assumptions.
Croydon’s 2026 landlord licensing routes
Croydon’s borough-wide Additional HMO licensing scheme 2026 began on 25 September 2026 and covers qualifying homes occupied by three or four people forming at least two households, subject to exemptions. The council also identifies mandatory licensing for HMOs with five or more people sharing facilities who are not a single household. Establish occupancy and household arrangements before choosing the application route.
The Selective Licensing Scheme 2026 covers 14 wards, including Fairfield, South Croydon, Selhurst and Waddon, rather than the whole borough. Check the address against the council’s coverage and exemptions. For a property review, scope fire risk assessments, EPC and legionella risk assessments around the building and management arrangements. These are distinct services, not a claim that Croydon requires all three as licence attachments in every case.
Building compliance questions in Croydon
Does a small Croydon residential proposal need energy information?
Yes. The May 2026 validation list says minor residential proposals should include an Energy Design Statement explaining clean-energy solutions and the amenity effects of external equipment.
Can a Croydon HMO licence replace planning permission?
Do not treat the two as interchangeable. Croydon’s borough-wide Article 4 Direction requires planning permission for C3-to-C4 small HMO conversions and took effect on 28 January 2020. Check that route separately from licensing.
Does selective licensing cover every Croydon rental?
No. Croydon’s 2026 scheme lists 14 wards and sets out exemptions. Properties already licensed under mandatory or additional HMO licensing do not need a selective licence for the same property.
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