Noise Survey Cost: When You Need One, What It Includes, and How to Decide Between Internal and Consultant

If you have just realised your workplace might need a noise survey — because exposure looks like it could be over the action values, an inspector has asked, an insurer has prompted you, or workers have complained — the next question is usually "what does this cost, and do I have to pay for it?". The honest answer has two halves: it depends on what kind of survey you actually need, and a meaningful fraction of small employers don't legally need to pay a consultant at all.

This guide covers what's included in a UK workplace noise survey, the price ranges you can reasonably expect, when a survey is legally required, and the decision factors that determine whether you commission one or run an internal assessment.

This guide covers occupational noise surveys conducted under the Control of Noise at Work Regulations 2005. It does not cover planning-application or environmental noise surveys (BS 4142, BS 8233, ProPG), which serve a different regulatory regime and have different cost structures.

What "noise survey" actually means

Search results for "noise survey cost" mix two very different things. Make sure you know which one applies to you before reading any price benchmark.

Occupational / workplace noise survey — assessment of workers' exposure to noise under the Control of Noise at Work Regulations 2005. Required when employers can't reliably estimate exposure from manufacturer data, ready-reckoners, or comparable work. Output is a competent-person report identifying who is exposed, at what level, against the lower (80), upper (85), and limit (87) dB(A) action values, plus recommendations for control. This is what this guide is about.

Planning / environmental noise survey — measurement against BS 4142:2014 (industrial / commercial source impact), BS 8233 (residential development), or ProPG (planning compliance). Used for development applications, complaint investigation, or commercial planning conditions. Different methodology, different consultants, different cost structure.

The two surveys answer different regulatory questions. A consultancy may offer both, but the survey design, instrumentation, and report format differ. If you are not sure which you need: if your concern is workers wearing ear defenders, it's occupational. If it's about planning permission, neighbours, or building work, it's environmental.

When you legally need a survey

You do NOT automatically need a consultant noise survey because workers are exposed to noise. Regulation 5 of the Control of Noise at Work Regulations 2005 requires a noise risk assessment, which is broader than a survey. The risk assessment is the legal duty; a measured survey is one route to fulfilling it.

You can satisfy Regulation 5 by estimation when:

• Exposure is well below the action values and can be ruled out by ready-reckoner or manufacturer data
• Equipment has reliable noise emission data in its CE / UKCA declaration
• The work is similar to documented HSE example calculations and you can defend the comparability
• Exposure pattern is stable (consistent equipment, consistent shift, consistent task mix)

You typically DO need a measured survey when:

• Exposure looks like it could be near or above an action value and estimation uncertainty would swing the result across a threshold
• Noise sources overlap, vary across the day, or include impulsive components (impact noise, transient processes)
• Equipment has no declared noise emission data (older machinery, imported equipment with no UK technical file, custom-built kit)
• A previous assessment is challenged by HSE, an insurer, a union safety rep, or affected workers
• The lower or upper action value is exceeded and you need defensible figures to plan control measures

HSE's guidance on this — see How do I assess the risks? and the underpinning ACoP in L108: Controlling Noise at Work (3rd edition) — repeatedly emphasises that the assessment must be "competent" but doesn't mandate an external consultant. For walk-through of the DIY-versus-consultant decision in more detail, see Workplace Noise Assessment: How to Choose Between DIY and Consultant Surveys.

What's actually included in a consultant survey

Typical scope from a competent occupational hygienist or acoustic consultant:

Component	Detail
Pre-survey scoping	Walk-through, identification of noise sources, exposure groups, sample plan
Sound level measurement	Calibrated Type 1 or Type 2 sound level meter (BS EN 61672), at-source measurements + worker-position measurements
Personal dosimetry	Worker-worn noise dose meters logged across a representative shift (where exposure is variable or impulsive)
Peak sound pressure	Separate measurement of peak C-weighted pressure for impact / transient sources
LEP,d calculation per role	Time-weighted daily exposure for each identified exposure group
Hearing protection assessment	Effective protected exposure given current PPE; suitability against the exposure
Report	Findings, action value comparison, recommendations against the control hierarchy, evidence pack

Things that may or may not be included — ask explicitly:

• Whether the report includes a control implementation plan (cost-ranked recommendations) or only identifies the controls in principle
• Whether reassessment is included in the quoted fee (typically not — re-engagement when material changes happen is separate)
• Whether the consultant will brief the workforce on findings (often a separate line item)
• Whether dosimetry is included by default or only when triggered by initial walk-through findings
• Whether the consultant will provide written justification for not doing audiometry (where exposure is below 85 dB(A) with hearing protection)

Typical UK price ranges

These are publicly-published consultancy benchmarks; your actual quote will vary by site complexity, sector, geography, and consultancy. The figures below are from currently-published acoustic consultancy fee guides as of 2026.

Workplace / occupational noise survey — typically falls in the lower brackets of published consultancy fee tables because the methodology is more standardised than planning surveys. Single-site, single-shift, modest source count (a workshop or production line with 5-15 workers, one shift, equipment with available noise data) typically sits in the £500 to £1,500 range — consistent with the figures discussed in our DIY vs consultant guide ("range of several hundred to around a thousand pounds for a small workshop"). Larger sites, multiple shifts, dosimetry across many workers, or complex impulsive sources push this higher.

Planning / environmental surveys — published ranges from acoustic consultancy fee guides include £900-£1,200+ for a BS 4142 industrial / commercial impact assessment with survey, £900-£1,600+ for a BS 8233 residential assessment with survey, £1,200-£2,400+ for a full planning noise assessment, and £1,400-£3,800+ for complex or multi-source assessments. These are not workplace surveys; they answer different regulatory questions.

What drives variation:

• Site complexity — number of distinct exposure groups, number of noise sources, layout difficulty
• Time required on-site — a half-day vs. a full shift with personal dosimetry vs. multi-shift sampling
• Geography — London + South East tends to be higher; mid-line consultancies elsewhere are typically lower
• Sector regulation — sectors with prescriptive duty regimes (offshore, rail, heavy manufacturing) attract premiums
• Report depth — basic compliance vs. detailed control recommendations with cost-benefit analysis

If a quote is more than 2× the typical range for your scope, ask what's driving it. If it's less than half, ask whether it's the right methodology — cheaper isn't necessarily worse, but cheaper that includes BS 4142-style methodology when you needed occupational LEP,d work is the wrong cheaper.

Internal vs consultant: the financial decision

Internal cost components that consultancies don't have:

• Calibrated meter — a meter meeting BS EN 61672 Type 2 (acceptable for compliance purposes in most workplace cases) costs from £300 to £1,500+ depending on capability. Calibration is required at intervals (typically annually) at £100-£200 per calibration.
• Competent person time — an internal H&S manager or competent supervisor running the assessment over a day or two of measurement, calculation, and report. Cost-of-time depends on rate but typical 1-3 days work.
• Training — if the internal assessor isn't already trained, a 1-3 day noise risk assessment course typically costs £400-£900.

A single-shot consultancy survey at £1,000 looks cheaper than a £1,500 meter + £600 training + 3 days internal time on paper. But the internal investment is reusable for re-assessment, control-measure verification, and ongoing monitoring — which the regulations require under Regulation 5 ("the assessment shall be reviewed regularly, and forthwith, if there is reason to suspect that the risk assessment is no longer valid").

The break-even shifts when:

• You expect to re-assess regularly (annual cycles, equipment refresh cycles, layout changes) — internal capability pays back faster
• You have multiple sites — internal capability scales; consultant fees multiply
• Your exposure picture is stable and well-understood — internal estimation may avoid a survey entirely
• A consultant survey would be the first of many — consider whether the first survey doubles as training the internal team

The break-even tips toward consultancy when:

• Exposure is complex or close to limit values — measurement defensibility matters
• The assessment is itself a defence document (e.g. responding to an HSE Improvement Notice or insurer query)
• Internal time is genuinely scarcer than budget — fee-funded execution may be faster than scheduling internal capacity
• Your equipment list includes anything where competent acoustic judgement (impulsive sources, complex tonality) is genuinely needed

How to brief a consultant for a defensible quote

If you decide on a consultant, the quote you get depends heavily on the brief. A vague "we need a noise survey" gets a vague quote; a specific brief gets a comparable quote. Include:

• Site size and number of exposure groups
• Equipment list with approximate operating hours per shift
• Whether you have any current noise data (declared emission figures, prior surveys, complaints)
• The reason for the survey (initial Regulation 5 compliance, response to inspection, complaint investigation, post-change verification)
• Required output format (compliance report only, or report + control implementation plan)
• Reassessment expectations (is this a one-off, or part of a recurring programme?)

A consultant who responds with a fixed scope, fixed fee, and clear deliverables is easier to compare than one quoting "from £X" without specifying what's in scope. Three quotes on the same brief give you the working range; three quotes on different briefs give you nothing comparable.

Where the survey fits in the longer compliance picture

A survey is one input, not the whole assessment. The regulations require you to use the survey to drive a programme of work — identify who is exposed, implement controls, train workers, manage hearing protection, run health surveillance where the upper action value is exceeded, and review when something changes. None of that is in the consultant's scope unless explicitly contracted for.

For the assessment workflow itself, see How to Complete a Noise Risk Assessment: Step-by-Step for UK Employers. For the practical work that follows a survey, see Noise Risk Assessment Control Measures: What to Do After the Survey. For estimating exposure when a survey isn't yet warranted, NoiseProof's free Noise Exposure Calculator helps test whether your workplace likely needs one at all.

Sources

• The Control of Noise at Work Regulations 2005 — legislation.gov.uk
• How do I assess the risks? — HSE
• L108: Controlling Noise at Work (3rd edition, 2021) — HSE
• Noise at work: regulations — HSE
• Noise at work — employer guidance — HSE
• INDG362: Noise at work — a brief guide to controlling the risks — HSE