How does construction noise monitoring work?
A weatherproof Class 1 sound level analyser is fixed at the site boundary or near the closest homes. It logs noise levels continuously, usually as LAeq over 15-minute or 1-hour periods, and sends them to a web dashboard over 4G. Levels are compared with the limits in a Section 61 consent, planning condition or local authority agreement, and the site team is alerted by SMS and email when levels approach or reach a threshold.
Do I need construction noise monitoring?
Monitoring is usually required where a Section 61 consent, planning condition or Construction Environmental Management Plan sets noise limits, and is often expected for demolition, piling or work near housing. Even where it is not a formal requirement, it provides evidence to respond to complaints and helps manage the noise risk on a programme.
What are the noise limits for construction sites in the UK?
There is no single national limit. Most local authorities use the BS 5228-1 ABC method, which sets a daytime threshold of 65, 70 or 75 dB LAeq,T at the nearest residential facade depending on the existing ambient level, with lower values in the evening and at night. The limits for a specific site are usually set in a Section 61 consent or planning condition.
What is BS 5228?
BS 5228 is the British Standard for noise and vibration control on construction and open sites. Part 1 covers noise and Part 2 vibration. It sets out how to predict construction noise, assess it against thresholds, and apply Best Practicable Means to reduce it. Section 61 applications and local authority conditions are normally based on it.
What is a Section 61 consent?
Prior consent from the local authority for construction noise under Section 61 of the Control of Pollution Act 1974. The contractor applies before works start, setting out methods, plant, working hours, predicted noise levels and the Best Practicable Means to control noise. Working in accordance with the consent gives protection against Section 60 notices for those works.
Can construction noise monitoring send automatic alerts?
Yes. An early-warning level and a limit level are set for each monitor. When either is reached, an SMS and email alert goes to the people named on the alert list straight away, so action can be taken while the level is still rising rather than after an exceedance.
How much does construction noise monitoring cost?
It is charged as a fixed weekly rate per monitor, covering the unit, data connection, dashboard, alerts, reporting and consultant support. The rate depends on the number of monitors and duration. Section 61 applications are quoted as a fixed fee. Quotes are normally provided within one working day.
How quickly can noise monitoring be installed?
Typically within a few working days of instruction. Each unit connects over 4G, so installation usually takes under an hour and the dashboard is live the same day.
Which areas do you cover?
We install and support construction noise and vibration monitoring on sites across the UK, including the South West, London, the Midlands and the North.
Can you monitor vibration as well as noise?
Yes. Vibration monitoring (PPV, peak particle velocity) runs on the same dashboard and is usually needed where piling, demolition or vibratory compaction takes place near homes or sensitive structures. Ask about dust monitoring when you enquire.
