Environmental · Mandatory · Pre-Construction
Section 61 Consent Application
An application to the local authority for prior consent to carry out noisy construction works.
Last reviewed: 29 March 2026 — This guide reflects UK law as of this date. Control of Pollution Act 1974 remains current with no amendments enacted as of 29 March 2026. Next scheduled review: 29 March 2027.
| Legal basis | Control of Pollution Act 1974 Section 61 |
| Status | Mandatory — strongly recommended on urban sites |
| Prepared by | Principal Contractor |
| Application timing | At least 28 days before construction work is due to commence |
| Statutory defence | A granted s.61 consent provides a complete statutory defence against s.60 notices — giving the contractor certainty on permitted noise levels and working methods |
1. Section 61 Consent — The Proactive Route to Noise Compliance
Section 61 of the Control of Pollution Act 1974 provides a mechanism by which a contractor can apply to the local authority for advance consent to carry out construction works, specifying the methods to be used and the steps to be taken to minimise noise. This is a proactive approach that gives the contractor certainty about what noise levels and working methods are acceptable before construction starts, rather than risking reactive enforcement through Section 60 notices during the works.
The key benefit of Section 61 consent is the statutory defence it provides. If a Section 61 consent is granted and the contractor complies with its terms, the contractor has a complete statutory defence against any subsequent Section 60 notice served in respect of the same works. This means the local authority cannot impose additional restrictions on working hours, plant, or methods beyond those agreed in the consent. For contractors working on urban sites where noise complaints are likely, this certainty is extremely valuable and can prevent costly disruption to the construction programme.
The application must be submitted at least 28 days before the construction work is due to commence, giving the local authority time to consider the application and, if necessary, attach conditions. The local authority must give its consent within the 28-day period or the consent is deemed to have been given. In practice, early engagement with the local authority's Environmental Health team before submitting the formal application is strongly recommended, as pre-application discussions can identify potential issues and smooth the approval process.
Pre-application engagement
Engage the local authority's Environmental Health team before submitting the formal s.61 application — pre-application discussions smooth the process. Understanding the local authority's expectations and any specific concerns about the site or surrounding receptors before the formal submission allows the application to be tailored to address those concerns, significantly increasing the likelihood of consent being granted without onerous conditions.
2. Key Components
The following table sets out the key components that a Section 61 consent application must include. The application must provide sufficient detail to allow the local authority to assess the noise and vibration impact of the proposed works and the adequacy of the proposed mitigation measures.
| Component | What it covers |
|---|---|
| Applicant details | Name, address, and contact details of the applicant (typically the Principal Contractor), the person responsible for noise management on site, and an out-of-hours emergency contact number for noise complaints. |
| Site details | Site address, location plan, site boundary, surrounding land uses, and identification of all noise and vibration sensitive receptors in the vicinity of the site, including residential properties, schools, hospitals, care homes, and places of worship. |
| Description of works | Detailed description of the construction works to be carried out, broken down into phases or stages. Each phase must describe the nature of the work, the anticipated duration, and the sequence in which the works will be carried out. The description must be specific enough to allow the local authority to understand which activities will generate significant noise and vibration. |
| Plant and machinery | Schedule of all plant and machinery to be used on site, including the make, model, and sound power level (LWA) of each item. Where possible, sound power levels should be taken from the BS 5228 database or from manufacturer declarations. The schedule must cover all significant noise sources, including fixed plant (generators, compressors, concrete pumps) and mobile plant (excavators, dump trucks, piling rigs). |
| Proposed working hours | Proposed standard working hours and any requirements for work outside standard hours, including early morning starts, late evening finishes, weekend working, and night works. Any extended or non-standard working hours must be justified, and additional mitigation measures for out-of-hours working must be specified. |
| Noise assessment | Quantified noise predictions at each sensitive receptor from each construction activity, using the BS 5228 Part 1 methodology. Predictions must show the expected noise levels for each phase of work and must be compared against the assessment criteria (typically +5 dB(A) above background or the fixed threshold, whichever applies). The assessment must include the results of the baseline noise survey. |
| Vibration assessment | Quantified vibration predictions at each sensitive receptor from vibration-generating activities, using the BS 5228 Part 2 methodology. Predictions must be expressed as peak particle velocity (PPV) in mm/s and compared against the thresholds for cosmetic damage and human perception. Vibration-generating activities include piling, demolition, compaction, and the use of vibratory plant. |
| Mitigation measures | Detailed schedule of noise and vibration mitigation measures to be implemented, demonstrating Best Practicable Means (BPM). Measures must include selection of quieter plant, acoustic enclosures and barriers, programming of noisy activities, hoarding specification, community liaison arrangements, and any other site-specific controls. Each measure must be linked to the specific activity or noise source it is intended to control. |
| Monitoring | Proposed noise and vibration monitoring programme, including monitoring locations, equipment specification, monitoring frequency, trigger and action levels, and the process for reviewing monitoring data and implementing corrective action if levels are exceeded. Monitoring must be carried out by a competent person using calibrated instruments. |
| Emergency works | Provision for emergency works that may need to be carried out outside the consented working hours or using methods not covered by the consent. Emergency works may include urgent structural stabilisation, response to flooding or utility failure, or other works necessary to prevent danger to persons. The application should describe the process for notifying the local authority of emergency works as soon as practicable. |
| Signed declaration | A signed declaration by the applicant confirming that the information provided in the application is accurate, that the proposed methods and mitigation measures will be implemented as described, and that the applicant understands that failure to comply with the terms of any consent granted may result in the consent being withdrawn and enforcement action being taken. |
3. Common Mistakes
Not submitting the application in advance
Section 61 requires that the application is submitted at least 28 days before the construction work is due to commence. Submitting the application late, or worse, after work has already started, defeats the purpose of the consent mechanism. The statutory defence only applies to works carried out after the consent has been granted. Work that is carried out before the consent is in place has no protection against a Section 60 notice. Late submission also creates an adversarial relationship with the local authority from the outset, which is counterproductive when the goal is to agree a workable noise management regime.
Not complying with the terms of the consent
The statutory defence provided by Section 61 consent is conditional on the contractor complying with the terms of the consent. If the contractor exceeds the consented noise levels, works outside the consented hours, uses plant not listed in the application, or fails to implement the specified mitigation measures, the defence is lost. The local authority can then serve a Section 60 notice imposing its own conditions, and the contractor may face prosecution for breach of the consent. Compliance with the consent must be actively managed and monitored throughout the construction programme.
Omitting plant or activities from the application
The Section 61 consent only covers the plant, methods, and activities described in the application. If the contractor subsequently needs to use plant or carry out activities that were not included in the original application, those works are not covered by the consent and have no protection against a Section 60 notice. It is essential to include all anticipated plant and activities in the application, including contingency activities. If additional plant or methods are needed during the works, a variation to the consent should be applied for before the new plant or methods are used.
4. Frequently Asked Questions
What happens if the local authority refuses the Section 61 application?▾
If the local authority refuses to grant consent under Section 61, the applicant has a right of appeal to a magistrates’ court within 21 days of the refusal. The court can grant consent with or without conditions, or dismiss the appeal. In practice, outright refusal of a Section 61 application is relatively uncommon if the application is well-prepared and demonstrates Best Practicable Means. More commonly, the local authority will grant consent subject to conditions that may differ from those proposed in the application, such as stricter noise limits, reduced working hours, or additional monitoring requirements. If the contractor considers the conditions to be unreasonable, the right of appeal also applies to conditions attached to a consent. If no consent is in place (whether because the application was refused, appealed, or never submitted), the contractor has no statutory defence against a Section 60 notice and must comply with whatever conditions the local authority imposes through that route.
Generate your Section 61 Consent Application on Construction Suite
Construction Suite walks you through every required section with a guided Q&A — built to Control of Pollution Act 1974 — and generates a professionally formatted document in minutes.
Get started freeThis guide is for general informational purposes only and does not constitute legal advice. While every effort is made to ensure accuracy, regulations change and individual project circumstances vary. Construction Suite is a trading name of Xzist Digital Ltd, registered in England and Wales.