Due Diligence Guide · Sewer Inspection & Repair

Due Diligence Guide: Buying a Sewer Inspection & Repair Business

Know exactly what to verify before acquiring a CCTV inspection, CIPP lining, or sewer repair company in the $1M–$5M revenue range.

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Acquiring a sewer inspection and repair business requires scrutiny across three high-stakes areas: capital-intensive equipment fleets, transferable municipal contracts, and a licensed technician workforce. Buyers who skip these areas risk inheriting deferred capex, non-transferable contracts, or a workforce dependent on the exiting owner.

Sewer Inspection & Repair Due Diligence Phases

01

Phase 1: Financial & Revenue Quality

Validate EBITDA, revenue mix, and customer concentration before advancing to legal or operational review.

Normalize EBITDA with verified add-backscritical

Request 3 years of tax returns and P&Ls. Identify owner compensation, personal vehicle use, and non-recurring expenses. Confirm adjusted EBITDA supports the proposed valuation multiple of 3.5–6x.

Analyze revenue mix by service typecritical

Break down revenue between CCTV inspection, CIPP lining, spot repair, hydro-jetting, and emergency response. Recurring inspection contracts are valued higher than one-time repair jobs.

Assess customer concentration riskcritical

Flag any single municipal or commercial client exceeding 30% of revenue. Request a 3-year client-level revenue report to identify dependency on one or two accounts.

02

Phase 2: Equipment, Contracts & Compliance

Verify the condition of capital assets, contract transferability, and regulatory standing before issuing an LOI.

Audit equipment fleet condition and capex needscritical

Obtain a full inventory of CCTV trucks, jetting units, CIPP lining equipment, and robotic cutters. Review maintenance logs and assess near-term replacement costs that could compress post-acquisition margins.

Review municipal and commercial contract termscritical

Confirm all master service agreements include transferability language. Check renewal dates, cancellation clauses, and whether contracts require rebidding upon change of ownership.

Verify environmental compliance historyimportant

Request EPA compliance records, any prior violations, spill reports, and active regulatory investigations. Environmental liability can survive a business sale and expose buyers to cleanup costs.

03

Phase 3: Workforce, Operations & Transition Risk

Evaluate technician credentials, key-person dependency, and the seller's transition plan.

Confirm technician licensing and NASSCO certificationscritical

Obtain copies of all NASSCO PACP/MACP certifications, plumbing licenses, and insurance certificates. Assess cost and timeline to replace any certified employee who might exit post-closing.

Identify key-person dependencycritical

Determine whether the owner serves as primary estimator, project manager, or sole licensed operator. A heavy owner-dependent operation significantly increases transition risk and may require a longer earnout period.

Evaluate operational documentation and systemsimportant

Review work order systems, inspection reporting software, safety protocols, and SOPs. Documented processes reduce reliance on tribal knowledge and support a smoother ownership transition.

Sewer Inspection & Repair-Specific Due Diligence Items

  • Verify that CCTV inspection equipment meets current NASSCO PACP reporting standards and is compatible with municipal deliverable requirements before assuming operational continuity post-closing.
  • Confirm pipe lining resin inventory, liner suppliers, and subcontractor relationships for CIPP projects — supply chain gaps or sole-source dependencies can delay revenue post-acquisition.
  • Request documentation of all inflow and infiltration (I&I) assessment contracts tied to EPA consent decrees, as these often carry multi-year municipal funding and predictable renewal cycles.
  • Assess whether any inspection vehicles or jetting trucks are subject to equipment financing liens that will require payoff at closing or assumption in the deal structure.
  • Review insurance coverage for underground utility damage liability — inadequate coverage for third-party infrastructure claims is a common and costly gap in smaller sewer service operators.

Frequently Asked Questions

What EBITDA multiple should I expect to pay for a sewer inspection and repair business?

Expect 3.5x–6x adjusted EBITDA depending on contract quality, equipment condition, and revenue mix. Businesses with long-term municipal MSAs and NASSCO-certified teams command multiples at the higher end.

Are municipal sewer contracts transferable when I buy the business?

Not automatically. Many municipal contracts require consent to assignment or rebidding upon ownership change. Always review contract language and consult with the municipality before closing to avoid losing revenue post-acquisition.

Can I use an SBA 7(a) loan to acquire a sewer inspection company?

Yes. SBA 7(a) loans are commonly used in this sector with 10–15% buyer equity down. The equipment-heavy balance sheet and verified municipal revenue typically support SBA underwriting when financials are clean.

What is the biggest due diligence mistake buyers make in this industry?

Underestimating deferred capex. Aging CCTV trucks or jetting units not flagged pre-close can require $200K–$500K in replacement costs within 12 months, severely impacting projected post-acquisition returns.

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