Due Diligence Checklist · Janitorial Supply Distributor

Due Diligence Checklist: Buying a Janitorial Supply Distribution Business

Five critical areas every buyer must investigate before acquiring a jan-san distributor — from customer concentration to supplier rebates and inventory health.

Acquiring a janitorial supply distributor in the $1M–$5M revenue range requires disciplined due diligence across five core risk areas. These businesses generate stable, recurring cash flow from commercial accounts — but value can erode quickly if customer relationships are owner-dependent, supplier agreements are informal, or inventory is bloated with obsolete SKUs. This checklist gives buyers a structured framework to validate EBITDA quality, assess transferability of key relationships, and identify deal-killers before closing.

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Customer Concentration & Contract Review

Assess revenue diversification and the durability of commercial account relationships post-acquisition.

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Request a customer revenue report showing top 20 accounts by annual spend for each of the last 3 years.

Reveals concentration risk; a single account above 20% revenue is a material deal risk.

Red flag: Top 3 accounts represent more than 50% of total annual revenue with no written contracts.

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Review all active customer contracts for renewal terms, pricing lock-ins, and termination clauses.

Contract-based revenue is more defensible and supports higher acquisition multiples.

Red flag: Majority of accounts operate on verbal agreements with no documented pricing or renewal terms.

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Calculate customer retention rate over the trailing 36 months, including account churn and new account adds.

Retention above 90% signals strong service relationships and low post-close revenue risk.

Red flag: Annual customer churn exceeding 15% without clear explanation from the seller.

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Identify which accounts have direct relationships with the owner versus the sales or service team.

Owner-managed accounts are at high defection risk during an ownership transition.

Red flag: Owner personally manages the top 5 accounts with no secondary contact or account documentation.

Supplier Relationships & Agreements

Validate that key vendor agreements, exclusivity provisions, and rebate programs will survive the transaction.

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Obtain copies of all active supplier agreements, including pricing tiers, rebate structures, and exclusivity terms.

Supplier rebates can represent 3–5% of revenue and are often not reflected in standard financials.

Red flag: Key supplier agreements are verbal or handshake arrangements with no written documentation.

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Confirm whether any exclusive or preferred regional distribution agreements are transferable to a new owner.

Non-transferable exclusivity agreements can eliminate a core competitive advantage post-close.

Red flag: Supplier exclusivity agreements contain change-of-control clauses requiring vendor consent or renegotiation.

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Review the top 5 suppliers by purchase volume and assess concentration risk on the supply side.

Over-reliance on one supplier creates vulnerability to price increases or supply disruptions.

Red flag: A single supplier accounts for more than 40% of total product purchases with no backup source.

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Verify rebate payment history and confirm current rebate thresholds are achievable post-acquisition.

Rebate tiers tied to volume may reset under new ownership, compressing gross margins immediately.

Red flag: Rebate thresholds require purchase volumes the business cannot sustain without the seller's vendor relationships.

Inventory Valuation & Working Capital

Evaluate inventory quality, turnover velocity, and working capital requirements embedded in the deal structure.

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Conduct a full physical inventory count and reconcile against accounting records and the seller's stated value.

Inflated inventory valuations directly increase the effective purchase price in asset deals.

Red flag: Physical count reveals inventory value more than 10% below seller's stated balance sheet figure.

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Analyze inventory turnover by SKU category to identify slow-moving or obsolete stock.

Dead inventory ties up working capital and will require write-downs post-close.

Red flag: More than 20% of SKUs show no movement in the trailing 12 months with no liquidation plan.

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Review the working capital peg methodology and confirm it reflects a 90-day trailing average of inventory and receivables.

An improperly set working capital peg can result in a hidden purchase price increase at closing.

Red flag: Seller proposes a working capital peg based on a period with abnormally high seasonal inventory levels.

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Assess accounts receivable aging to identify past-due balances and customer credit risk exposure.

Uncollectible receivables inflate working capital and signal deteriorating customer relationships.

Red flag: More than 15% of accounts receivable are aged beyond 90 days without adequate reserve or explanation.

Gross Margin & Financial Quality

Validate normalized EBITDA, margin drivers, and the sustainability of profitability post-acquisition.

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Request a gross margin analysis by product category and by individual customer account.

Margin varies significantly between commodity SKUs and private-label or specialty products.

Red flag: Overall gross margin below 25% with no private-label or value-added service component to support improvement.

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Review 3 years of tax returns alongside internal P&L statements and reconcile any material discrepancies.

Gaps between tax returns and P&L statements are a common indicator of unreported expenses or inflated add-backs.

Red flag: Seller cannot produce 3 years of tax returns or significant unexplained variances exist between filings and P&Ls.

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Identify and validate all owner add-backs claimed in the normalized EBITDA schedule with supporting documentation.

Aggressive or undocumented add-backs can overstate EBITDA by 20–30% in owner-operated distributors.

Red flag: Add-backs exceed 15% of stated EBITDA without itemized documentation and clear business-purpose explanations.

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Analyze revenue and margin trends over 3 years to assess whether the business is growing, stable, or declining.

Margin compression from national distributors may not be visible in a single-year snapshot.

Red flag: Gross margins have declined more than 3 percentage points over 3 years with no corrective action taken.

Staffing, Operations & Key-Person Risk

Assess workforce stability, operational systems, and the business's ability to operate independently of the owner.

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Review all employee records including tenure, compensation, non-compete agreements, and any pending disputes.

Delivery drivers and warehouse staff are operationally critical and expensive to replace if they depart post-close.

Red flag: No non-compete or non-solicitation agreements exist for the sales team or operations manager.

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Evaluate whether documented SOPs exist for order fulfillment, delivery routing, inventory replenishment, and billing.

Undocumented processes create operational risk and owner dependency that increases transition costs.

Red flag: Owner cannot produce written SOPs and describes core processes as entirely relationship- or memory-based.

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Assess the owner's role in daily operations and identify which functions have no qualified backup.

Owner-dependent sales and vendor relationships are the single largest post-acquisition attrition risk.

Red flag: Owner is the sole salesperson, primary vendor contact, and daily operations manager with no trained successor.

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Verify that all delivery vehicles, commercial leases, and business licenses are current, owned, and transferable.

Expired licenses or non-assignable leases can delay or block a clean asset purchase closing.

Red flag: Key facility lease contains a landlord-consent transfer clause and lease term expires within 12 months of closing.

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Deal-Killer Red Flags for Janitorial Supply Distributor

  • Single customer accounts for more than 25% of annual revenue with no written contract in place.
  • Primary supplier exclusivity agreement contains a change-of-control clause requiring vendor approval to transfer.
  • Owner is sole salesperson and has personal relationships with all top 10 commercial accounts.
  • Gross margins have declined for 3 consecutive years due to competitive pressure from national distributors.
  • Physical inventory count reveals more than 20% of stock is obsolete with no write-down or liquidation plan.

Frequently Asked Questions

What is a typical acquisition multiple for a janitorial supply distributor in the lower middle market?

Janitorial supply distributors with $800K or more in EBITDA typically trade at 3x to 5x EBITDA. Businesses with diversified commercial accounts, exclusive supplier agreements, and gross margins above 28% command the upper end of that range. Heavy customer concentration, owner-dependent sales relationships, or declining margins will compress multiples toward 3x or below.

How should a buyer structure the deal to protect against post-close customer attrition?

The most effective protection is an earnout of 10–20% of the purchase price tied to 12-month post-close revenue retention from the top accounts. Pair this with a seller transition period of 90–180 days, a seller note held for 24 months as a natural offset mechanism, and a working capital peg tied to a 90-day trailing average of receivables and inventory to prevent manipulation before closing.

Are SBA loans available for acquiring a janitorial supply distribution business?

Yes. Janitorial supply distributors are SBA 7(a) eligible, making them accessible to buyers who can inject 10–15% equity. The SBA will finance the goodwill, inventory, and equipment in an asset purchase structure. Lenders will scrutinize customer concentration, the quality of financial documentation, and whether the business can service debt without the owner's personal sales production.

What is the biggest due diligence mistake buyers make when acquiring a jan-san distributor?

The most common mistake is accepting the seller's EBITDA number without independently verifying supplier rebates, inventory valuation, and owner add-backs. Rebates embedded in cost of goods and undocumented add-backs can inflate stated EBITDA by 20–30%. Buyers should require a quality of earnings report from an independent CPA and conduct a physical inventory count before finalizing the purchase price.

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