How much does a Industrial Hygiene Consulting cost to buy?

A typical Industrial Hygiene Consulting sells for 2x to 4x annual revenue. With average revenue of $700K, expect to pay $1.4M to $2.8M.

How much does it cost to start a Industrial Hygiene Consulting?

Startup costs range from $20K to $75K depending on location, equipment, and scale.

Service

Industrial Hygiene Consulting

Q: What are the profit margins for a Industrial Hygiene Consulting?

The average profit margin for a Industrial Hygiene Consulting is around 58%. At $700K revenue: staff hygienist salaries run 25–30%, lab analysis fees 8–12%, sampling equipment and calibration 4–6%, E&O insurance and professional liability 3–5%. Solo CIH owner-operators net 55–65%. Adding staff compresses margins to 40–50% until their billings fill.

OSHA requires it, lawyers demand it, and there are almost no small operators to deliver it

Industrial hygienists assess workplace environments for health hazards — chemical exposure, noise, air quality, ergonomics, radiation, and biological agents — and produce compliance reports that protect companies from OSHA citations, workers' compensation claims, and litigation. The field is undersupplied: the ABIH counts fewer than 9,000 Certified Industrial Hygienists (CIHs) in the US, while OSHA enforcement and plaintiff attorneys create consistent demand. Clients include manufacturing plants, chemical facilities, construction contractors, hospitals, and municipalities. A solo CIH billing $150–$300/hour can generate $250K–$500K/year; firms with 3–5 hygienists regularly cross $1M+. The certification barrier (CIH requires an exam plus qualifying experience) creates durable competitive moats once established.

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Avg Revenue

$700K

Profit Margin

58%

Acquisition Multiple

2x - 4x

Startup Cost

$20K - $75K

Difficulty

4/5

How It Works

The CIH visits client facilities to conduct exposure assessments: air sampling for chemicals (using NIOSH-method pumps and laboratory analysis), noise dosimetry, wipe sampling for metals and asbestos, and ergonomic surveys. Samples are sent to accredited laboratories; results are interpreted against OSHA PELs, NIOSH RELs, and ACGIH TLVs. The final report documents findings, compliance status, and control recommendations. Repeat visits happen at regulatory-specified intervals (annually for many OSHA standards) or after process changes. Retainer contracts with large manufacturing clients provide recurring revenue. Expert witness work on occupational disease litigation bills at $300–$600/hour and is a high-margin revenue stream for experienced CIHs.

Revenue Range

Low End

$250K

Typical

$700K

High End

$1.8M

Pros

+Under 9,000 CIHs nationally versus thousands of facilities with mandatory compliance needs — market is structurally undersupplied
+Regulatory and litigation drivers make demand non-discretionary for industries with significant chemical or noise exposure
+Expert witness engagements on occupational disease cases bill at $300–$600/hour with no field work — pure margin
+Retainer contracts with large manufacturers create predictable monthly revenue with minimal ongoing sales effort

Cons

-CIH certification requires passing a rigorous exam and documenting qualifying work experience — not an overnight credential
-Solo practice creates key-person risk; clients may not transfer if the certified hygienist exits
-Sampling results and expert opinions can be challenged in regulatory hearings or litigation — professional liability exposure

Best For

Certified Industrial Hygienists or EHS professionals who want to convert their expertise into a high-margin consulting practice with recurring industrial clients

Operating Costs

At $700K revenue: staff hygienist salaries run 25–30%, lab analysis fees 8–12%, sampling equipment and calibration 4–6%, E&O insurance and professional liability 3–5%. Solo CIH owner-operators net 55–65%. Adding staff compresses margins to 40–50% until their billings fill.