Non-Destructive Testing (NDT) Service
Find the crack before the shutdown finds you
Non-destructive testing firms inspect welds, pressure vessels, pipelines, tanks, bridges, and industrial components using ultrasound, radiography, magnetic particle, and dye penetrant testing. The surprising angle is how big this quiet inspection world is: GlobeNewswire pegged the broader NDT market above $32 billion by 2031, driven by safety, uptime, and aging infrastructure. Small local firms can build sticky industrial relationships because customers care more about certification, speed, and trust than flashy branding.
Avg Revenue
$1.2M
Profit Margin
22%
Acquisition Multiple
3x - 5.5x
Startup Cost
$75K - $600K
Difficulty
5/5
How It Works
Inspectors are dispatched to customer sites or fabrication shops to test assets without damaging them. Revenue comes from callout fees, hourly technician billing, project minimums, emergency turnaround, and annual inspection contracts. The moat is certification, reputation, and being the firm plant managers trust when downtime is expensive.
Revenue Range
Real Acquisitions in This Category
SBA 7(a) change-of-ownership loans · NAICS 541380 · Testing Laboratories
Deal Size Distribution
Deal Flow Over Time
Financing Profile
Recent Comparable Deals
| Closed | State | Loan | Implied deal | Jobs | Franchise |
|---|---|---|---|---|---|
| Sep 2025 | FL | $250K | $294K | 6 | — |
| Sep 2025 | FL | $3.3M | $3.8M | 6 | — |
| Sep 2025 | TX | $830K | $977K | 4 | — |
| Jan 2025 | VA | $945K | $1.1M | 14 | — |
| Oct 2024 | NV | $114K | $134K | 10 | ARCpoint Labs |
| Sep 2024 | OR | $2.8M | $3.3M | 27 | — |
| Jul 2024 | TX | $403K | $474K | 6 | Fastest Labs |
| Mar 2024 | KS | $153K | $180K | 5 | — |
| Nov 2023 | MD | $3.8M | $4.5M | 9 | — |
| Sep 2023 | NY | $2.3M | $2.7M | 4 | — |
Source: SBA 7(a) FOIA dataset, filtered to acquisitions (loans where business age is "Change of Ownership"). Implied deal size assumes an 85% loan-to-purchase ratio, a common SBA change-of-ownership structure. Charge-off rate shown only when 10+ loans have resolved (paid in full or charged off). Interest rates reflect last 24 months only. Actual deal values vary with equity injections, seller financing, and working capital terms.
Pros
- +Industrial customers can be very sticky once approved as a vendor
- +Emergency shutdown work commands premium pricing
- +Certifications and procedures create a real moat versus generic service shops
- +Demand benefits from aging infrastructure and stricter compliance
Cons
- -Highly technical and certification-heavy business
- -Liability is serious if inspections are wrong
- -Talent is scarce and expensive
Best For
Experienced industrial operators who can recruit certified inspectors and sell into plants, fabricators, and utilities
Operating Costs
Main costs are certified technicians, specialized equipment, calibration, insurance, trucks, and quality systems. Margins improve when technicians are highly utilized and emergency work becomes a meaningful share of revenue.
SBA Financing Estimator
Adjust the deal — see if it cash flows after debt service
Estimates only. Excludes owner compensation, capex, working capital draws, and taxes. Margin assumes average occupancy and volume. Actual SBA terms vary by lender and borrower profile.
Where to Buy
Market overview covering growth drivers in industrial inspection and uptime
Engineering, testing, and industrial service businesses for sale
Browse industrial testing, engineering, and inspection companies
Acquisition Score
Scores margin (30), entry multiple (25), SBA market depth (20), category risk (15), and deal momentum (10). Higher = better acquisition candidate.
Quick Facts
- Category
- service
- Difficulty
- 5/5
- Buy price
- $3.6M–$6.6M
Buyer's Toolkit
Essential tools to get started
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Largest business-for-sale marketplace in the US
SBA loans and business acquisition financing — get funded fast
ROBS financing — use retirement funds to buy a business tax-free
Bookkeeping for small business owners — hands-off financials
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