How PE Values Contractors on EBITDA: The 4 Numbers They Actually Read

Why This Matters Right Now

Private equity platforms have been steady buyers of contractor and home services businesses since 2022. This page does not cite a named deal database, so treat any specific acquisition or platform count you hear, including figures we have used before, as needing a source and an as-of date. If you're a contractor doing $5M+ in revenue, expect buyer outreach at some point and be ready to answer the questions below.

My background includes four years in PE and investment banking rolling up and acquiring service businesses, and a Stanford MBA. I've sat on the buy side of contractor evaluations. I've built the financial models. I've seen what makes a PE firm write a check, and what makes them walk away.

A good business can still arrive at diligence with financials that do not explain its earnings, cash or risk. Here's what PE actually looks at, and how to get your house in order, whether you plan to sell next year or in ten.

The First 30 Minutes: What PE Looks At

When a PE firm gets a contractor's financials for the first time, they're not reading every line item. They're scanning for five things. The four numbers in the headline sit inside them: gross margin by job type (factor 2), customer concentration (factor 3), and DSO and estimated-vs-actual labor hours, both tests of whether the numbers can be trusted (factor 5). Those last two have their own section below:

1. Revenue Quality and Predictability

PE wants to know: how much of your revenue is recurring or contractual vs. one-time project work?

The best contractors I've reviewed have 40-80% of revenue from service agreements and repeat service customers. The ones PE avoids are 90%+ project-based with no recurring customer relationships.

The metric: recurring plus repeat-service revenue (service agreements plus repeat service customers) as a share of total revenue, with SA revenue alone tracked as a separate line. As an author rule of thumb, not a measured threshold, above 50% reads as strong and above 70% supports a premium. Keep the definitions separate. Counterexample: a business with 15% SA revenue and 45% repeat service is at 60% on the combined measure but only 15% contractual, and a buyer will price those differently.

2. Gross Margin by Service Type

PE doesn't just want to see your blended margin. They want it by service type, because they're modeling which parts of the business to grow and which to restructure.

From my experience evaluating contractor financials, first in private equity and then with contractor teams and PE-backed portfolios at Level, here are working ranges by service type. The service and install ranges are author observation, not measured benchmarks; the SA figure is a Level Index measurement:

• Service/repair: 45-65% gross margin (author observation; often the highest)
• Maintenance/SA delivery: 37.9% median service-agreement gross margin, with the middle half between 20.5% and 53.5% (Level Index, 259 contractors with at least $10K of SA revenue)
• Install/project: 25-40% gross margin (author observation; lower, more variable)
• T&M work: varies wildly, needs job-level tracking

If your install division is running 20% margins while your service division runs 55%, PE will model growing service and restructuring install. If you don't have this breakdown, that's a red flag, it means you don't have job costing discipline.

3. Customer Concentration

In my judgment (not a measured threshold): if your top 3 customers represent 40%+ of revenue, PE sees risk. Treat one customer at 20%+ of revenue as a watch level and 25%+ as a deal concern.

Why: PE will model what happens if the largest customer leaves. If the answer is "the business collapses," the risk premium goes up and the valuation goes down. Our customer revenue concentration benchmarks show the median contractor gets 31.0% of revenue from its largest customer (Level Index, 959 cross-trade contractors with over $100K of revenue, many of them below PE size). That is above the 25% concern level. Check your own top-1 and top-3 shares on trailing 12-month revenue, and count related entities, such as one GC's affiliates or one property manager's portfolio, as a single customer.

The fix: This one takes time. Diversifying your customer base is a multi-year effort. But knowing the number, and having a plan to address it, matters in the conversation.

4. EBITDA Quality and Adjustments

PE values contractors on a multiple of EBITDA (earnings before interest, taxes, depreciation, and amortization). In the author's working range (not a deal-database survey), contractors with $5-30M of revenue trade around 4-7x adjusted EBITDA and $30M+ contractors around 6-10x. Service-heavy businesses with strong recurring revenue sit toward the upper end. Check disclosed multiples in the Market Monitor before relying on any range.

But the EBITDA they use isn't what's on your tax return. They'll adjust for:

• Owner's excess compensation: If you're paying yourself $500K but a hired GM would cost $200K, they add back $300K
• Personal expenses running through the business: Trucks, insurance, cell phones for family members
• One-time costs: Legal settlement, equipment write-off, move to new office
• Below-market rent: If you own the building and charge the business below-market rent, they adjust

Getting your EBITDA adjustments documented and defensible before a PE conversation matters. The difference between "our EBITDA is $800K" and "our adjusted EBITDA is $1.4M with these specific, documented adjustments" is $600K of EBITDA, which is $3.0M of value at a 5x multiple ($600K x 5), or $2.4M at 4x. That holds only if the buyer accepts every adjustment: each $100K they reject costs $500K at 5x.

Keep the earnings measure straight, too. Seller's discretionary earnings (SDE) adds back all owner compensation and is typically used for smaller owner-operated businesses. Adjusted EBITDA adds back only owner pay above a market replacement salary. A multiple quoted on one cannot be applied to the other.

5. Financial Infrastructure

This is the one that kills deals, not because the business is bad, but because the numbers can't be trusted.

PE needs:

• Monthly financial close within 15-20 days of month-end
• Clean chart of accounts mapped to industry standards
• Job-level profitability data, not just total P&L
• Cash flow forecasting, trailing and forward-looking
• WIP schedule (for commercial contractors with bonding)
• Consistent accounting policies, no switching between cash and accrual mid-year

The most common deal-killer I've seen: the contractor's books are on QuickBooks Desktop, maintained by the owner's spouse, with no job costing, no standard chart of accounts, and a 90-day close cycle. The business might be great. But the PE firm can't verify it, which means they either walk away or discount the price (in my experience, often by 20-30%; this is judgment, not a measured figure).

The Two Numbers Owners Usually Miss: DSO and Estimated vs. Actual Labor Hours

DSO: how many days of billing sit in receivables

How to compute it: DSO = ending accounts receivable / billed revenue for the same trailing period x days in the period. Use accrual billed revenue, not cash collections, and pull AR and revenue for the same entity and period. Show retainage receivable on its own line, so commercial retainage doesn't hide slow collection on service work, or the reverse.

Fictional example: a contractor bills $10.0M over the trailing 365 days and carries $1.37M of AR at year end. DSO = $1.37M / $10.0M x 365 = about 50 days. Cutting DSO to 40 days lowers AR to about $1.10M ($10.0M / 365 x 40), which frees roughly $274K of cash once. That is a balance-sheet change, not $274K of recurring annual profit. It does not raise EBITDA unless it also reduces bad-debt write-offs or other operating collection costs. Lower interest on a credit line improves net income and cash flow, not EBITDA.

What the buyer worries about: rising DSO can signal billing delays, disputes or customers who pay only under pressure. It also raises the working capital the buyer must fund after close. Purchase agreements commonly set a normalized working-capital target, so a one-time AR push right before closing may simply be netted out.

Operator checks: reconcile the AR aging total to the balance sheet, and compare 12 monthly DSO readings rather than one. Then break the collection gap into its parts. The Level Index cross-trade collection rate (cash collected / billed revenue) has a median of 85.1% across 464 contractors. A gap from that level to the legacy 92-96% comparison span is not all recoverable cash; the ratio's measurement window is unpublished, so align billing and payment cutoffs before comparing: some is timing, retainage not yet due, credits and disputed work. Contract notice and lien deadlines also run on their own legal clock and override any aging-bucket playbook.

Estimated vs. actual labor hours: does the estimate predict the job?

How to compute it: for each completed job with a labor budget, divide actual labor hours by estimated labor hours. Report the median and the share of jobs above 110% and above 150%, by job type, so one bad install doesn't hide behind dozens of small service calls.

Benchmark context: in the Level Index, the median job runs at 99.4% of budgeted hours. The mean is 119%, 40% of jobs run over budget and 18.3% exceed 150% (315,393 jobs from 1,391 cross-trade companies with both budgeted and actual hours). A median near 100% can coexist with a long tail of large overruns.

Fictional example: 20 install jobs were estimated at 1,600 total labor hours and took 1,840, which is 115% of budget, or 240 extra hours. At an assumed $45 loaded direct cost per hour, the overrun cost $10,800. That $10,800 is already inside reported job cost and gross margin, so don't add it again as a separate recoverable amount. The value of fixing estimates shows up on future jobs: tighter bids, captured change orders, or fewer jobs lost to padding.

What the buyer worries about: if estimates miss, the margin-by-job-type numbers above won't hold as the buyer grows the business. The gap between budget and actual is also one of the fastest ways to test whether job costing is real.

What Kills the Deal

In my experience, the top reasons PE walks away from contractor acquisitions:

1. Owner-dependent revenue. If the relationships live in the owner's phone and the owner is leaving post-acquisition, the revenue walks out the door. PE wants to see that customer relationships, pricing authority, and key decisions are distributed across a management team, not concentrated in one person.

2. No financial infrastructure. As above. If it takes 3 months to produce a P&L and nobody can tell you which jobs made money, the deal doesn't close. Or it closes at a fraction of what it should.

3. Undocumented EBITDA adjustments. Some owner-operated businesses contain personal or discretionary expenses. Buyers will examine whether each proposed adjustment is genuinely nonrecurring or unnecessary for a replacement owner. But if the adjustments aren't documented, defensible, and consistent, they'll discount them, and your valuation drops.

4. Hidden liabilities. Workers comp audits pending. Unresolved liens. Tax filings behind. Lease obligations not disclosed. Environmental issues on properties. PE does diligence, and surprises kill trust.

5. Declining metrics. Revenue going up but margins going down. Customer concentration increasing. Collection rate declining. DSO getting longer. PE models trends, not snapshots. If the trend is negative, the conversation gets harder.

The PE Readiness Checklist

Whether you plan to sell next year or want to run a better business (these are the same things), here's the financial infrastructure PE expects:

Accounting & Reporting

• Monthly close within 15-20 days of month-end
• Clean, standardized chart of accounts
• Accrual-basis management and financial statements (your CPA can formalize); tax accounting method is a separate CPA decision
• Consistent treatment of revenue recognition

Job-Level Visibility

• Job costing set up and maintained, every transaction tagged to a job
• Gross margin by service type (service, install, maintenance, T&M)
• Overhead allocation applied to jobs
• WIP schedule (for commercial work)

Cash Flow

• Collection rate tracked on matched billing and payment windows, with an author working goal of 90%+; reconcile retainage, credits and cutoff before comparing
• AR aging reviewed weekly
• Retainage forecast maintained
• Billing speed measured, with a goal of invoicing within 1 day of completion (the Level Index median is 1 day only when progress billing is included, and 7 days among companies that invoice after completion)
• 6-12 week cash flow forecast maintained

Growth & Revenue Quality

• SA revenue as % of total tracked and growing
• No single customer above 20% of revenue (watch level; 25% is the concern level discussed above)
• Revenue growing without margin compression
• Pricing reviewed annually, rates keep pace with cost inflation

People & Process

• Management team in place (not owner-dependent)
• Key roles documented: who does estimating, billing, AR, scheduling
• Employee retention data tracked

The Valuation Math

Here's a simplified, illustrative view. The margin and multiple ranges are planning assumptions from the author's working range, not survey medians, and they apply to adjusted EBITDA, not SDE:

Every point of EBITDA margin matters. At $20M revenue, the difference between 15% and 20% EBITDA margin is $1M in annual profit. At a 6x multiple, that's $6M in enterprise value. Better job costing and proper SA pricing can raise recurring EBITDA, which is what the multiple applies to. Improved collection works differently. Cutting DSO frees a one-time amount of cash and supports buyer confidence, but it does not add to annual EBITDA except where it reduces bad-debt expense or other operating collection costs. Lower interest cost improves net income, not the EBITDA the multiple applies to.

When PE Isn't the Right Move

Not every contractor should pursue a PE exit:

Under $5M in revenue, most PE platforms aren't interested (the deal economics don't work for them). Focus on building the business and the financial infrastructure. If a PE firm approaches you at this size, be cautious, the terms may not be favorable.

If you love running the business and don't want a boss. PE acquisitions come with reporting requirements, growth targets, and a board. If your goal is lifestyle and independence, a PE exit trades freedom for liquidity. That may or may not be the right trade for you.

If the business is owner-dependent and you're not willing to transition. PE needs you to stay for 2-3 years post-close to transition relationships and knowledge. If you're burned out and want to walk away immediately, the deal structure won't work.

If your financials need 12+ months of cleanup. Don't rush to market with messy books. You'll get a lower price. Take a year to get the financial infrastructure right, demonstrate 12 months of clean financials, and then go to market from a position of strength.

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The Bottom Line

PE evaluates contractors on five things: revenue quality, margin by service type, customer concentration, EBITDA quality, and financial infrastructure. The business itself might be excellent. But if the financials can't prove it, the valuation suffers.

The good news: everything PE wants to see is also what makes your business run better. Monthly closes, job costing, collection tracking, cash flow forecasting, these aren't "PE prep." They're the financial foundation of a well-run contractor.

Q: Can Level help me prepare for a PE exit? A: Yes. We've been on both sides. I spent four years in PE and investment banking, rolling up and acquiring service businesses, and now we help contractors build the financial infrastructure PE expects. We'll clean up your chart of accounts, implement job costing, build the cash flow forecast, and document your EBITDA adjustments. Depending on the signed engagement, the work documents and reconciles your numbers for a buyer's independent quality-of-earnings review; it does not guarantee the buyer's valuation.

Q: How long does PE readiness take? A: For a contractor with basic bookkeeping in place, typically 6-12 months to get the financial infrastructure to PE standards. The first 90 days focus on chart of accounts, job costing setup, and monthly close process. The next 6+ months start that track record; many buyers prefer 12 months of clean monthly financials. Confirm the buyer's diligence requirements.

Q: What multiple should I expect? A: In the author's working range, contractors with $5-30M of revenue and strong financials trade around 4-7x adjusted EBITDA. That is judgment, not a statistic from a named deal database. A quoted multiple only means something once you know whether it applies to adjusted EBITDA or SDE. Higher multiples go to contractors with strong recurring revenue (high SA penetration), diversified customer bases, and a management team in place. The biggest lever on valuation isn't revenue growth, it's proving the quality and sustainability of your existing earnings.

Q: Where can I see what public contractors are valued at? A: We track the five most relevant public MEP contractors, Comfort Systems USA, EMCOR, APi Group, Limbach, and IES Holdings, in the Level Market Monitor. It includes their financial scorecards, recent M&A terms with price-to-earnings calculations where the denominator is available, and an illustrative bridge comparing public-company and private-contractor valuation assumptions. Each edition states its financial period and actual review date.