How to Analyze a Construction Company’s Backlog, Margins, and Customer Concentration

A construction company’s backlog is a measure of potential future work, not guaranteed revenue or profit. To analyze it properly, first reconcile what the company counts as backlog and how much of the work is funded, signed and economically attributable to the company. Then test whether backlog is converting into revenue and cash, analyze margins on a consistent segment and accounting basis, and quantify dependence on individual customers, agencies, projects and end markets.

The most useful conclusion is not “large backlog equals strong company.” A large balance can contain optional, unfunded, delayed or low-margin work, while reported profit can change when cost-to-complete estimates change.

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What backlog tells you—and what it does not

Backlog generally represents work a contractor expects to execute in future periods. The figure can help indicate demand visibility, expected workload and potential revenue timing. It does not, by itself, establish that the work will be performed, collected or profitable.

Construction companies do not use one industry-wide backlog definition. A 2025 annual report reviewed for this analysis says companies measure and define backlog differently. One issuer describes backlog as unearned revenue expected on executed contracts; another includes projects when they have been awarded and management believes funding is probable. Those definitions produce numbers that are not directly comparable without adjustment.

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Granite Construction’s 2025 annual report states: “Our backlog may not be realized or may not result in profits and may not accurately represent future revenue.” That warning captures the central analytical rule: treat backlog as an indicator of possible future activity, then examine the conditions under which it can convert.

• Backlog is not guaranteed sales. Awards can be delayed, reduced, cancelled or renegotiated.
• Backlog is not guaranteed profit. Labor, materials, subcontractors, productivity and site conditions can change the expected economics.
• Backlog is not always the contractor’s economic share. Reported amounts may include joint-venture revenue, subcontracted work or pass-through materials.
• Backlog is not always near-term. A multi-year project can remain in the balance for several reporting periods.

Some revenue may be earned and completed within the same reporting period and therefore never appear in a period-end backlog balance. That means a company can have modest ending backlog and still report substantial current-period revenue.

Step 1: Reconcile the company’s backlog definition

Start with the backlog policy in the latest 10-K, annual report or earnings release. Copy the company’s definition into your worksheet before recording the headline number. The objective is to compare equivalent commitments rather than simply compare the largest figures.

Identify what qualifies for inclusion

Record whether the company includes each of the following:

• Only signed, executed contracts.
• Awards that have not yet reached a final contract.
• Letters of intent, notices to proceed or other pre-contract commitments.
• Options, extensions and phases that the customer may elect not to exercise.
• Claims, unapproved change orders or pending contract modifications.
• Work for which funding is not yet appropriated but is considered probable.

Construction Partners’ 2026 annual report describes backlog assumptions tied to awarded work and the probability of funding. Another SEC-filed 2024 annual report discusses a backlog that can include several types of commitments and highlights risks from delays, defaults, cancellations, scope changes and cost adjustments. These disclosures show why the word “backlog” needs a company-specific definition beside it.

Separate gross value from the company’s economic share

Check whether the reported amount is gross contract revenue or the company’s proportionate share. AECOM’s 2024 Form 10-K explains that its backlog can include its share of unconsolidated joint ventures and gross revenue containing third-party or pass-through costs. A contractor may therefore report a large nominal amount while retaining only a smaller portion of the associated work, margin or cash flow.

For every company, note:

• Whether unconsolidated joint ventures are included.
• Whether the company reports 100% of a joint-venture project or only its ownership percentage.
• How subcontractor, equipment, materials and other pass-through costs are treated.
• Whether the amount covers only a segment or the entire consolidated group.
• Which activities or contract types are explicitly excluded.

Build a like-for-like comparison

Use a comparison table that labels commitment level and economic ownership. A signed, funded contract reported at the contractor’s share should not be compared with an unfunded award reported at gross value.

Step 2: Test backlog quality and conversion

After defining the balance, classify each component by certainty and expected timing. A useful schedule has separate rows for executed and funded contracts, executed but not yet funded work, probable awards, options, claims and other conditional amounts.

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Review cancellation and delay terms

Read risk-factor and contract discussions for customer termination-for-convenience rights, cancellation provisions, remaining approvals, permitting, right-of-way issues and delayed notices to proceed. A project may remain in a company’s published backlog while the start date moves or the scope is reduced.

Also look for disclosures about customer defaults, contractor defaults, schedule extensions, disputes and change orders. A backlog balance that depends heavily on unresolved claims or disputed scope deserves a lower certainty assessment than signed work already mobilized.

Construct a backlog bridge

When disclosures permit, reconcile periods using:

Ending backlog = beginning backlog + new awards − revenue recognized + or − adjustments.

Adjustments can include cancellations, scope changes, foreign-exchange effects, acquisitions, divestitures and changes in the company’s share of a joint venture. The bridge is an analytical framework, not proof that backlog changes explain cash generation.

Compare the bridge with revenue and operating cash flow over several periods. If awards rise but revenue remains flat, investigate start delays, project duration and funding. If revenue rises while new awards slow, the company may be consuming existing backlog faster than it replaces it. If backlog grows through large awards but cash conversion weakens, examine billing terms, retainage, working-capital needs and pass-through content.

Estimate the timing profile

Ask management filings or investor materials to identify what portion is expected within the next 12 months, when such a split is disclosed. For the remainder, map projects by expected start and completion dates. A five-year infrastructure project and a six-month road-resurfacing contract contribute very different near-term visibility even if their headline values are identical.

Do not convert a backlog balance into a revenue forecast without examining contract duration, production rates, seasonality, weather exposure and the company’s historical conversion. The company may recognize revenue under a cost-to-cost method as work progresses rather than when it bills or collects cash.

Step 3: Analyze construction margins on a consistent basis

Calculate gross margin as:

Gross margin = gross profit ÷ revenue × 100.

Use the same period, segment and accounting presentation for every company. Keep construction operations separate from materials, engineering, maintenance or other businesses when the issuer reports them separately. Do not compare one company’s construction gross margin with another company’s consolidated operating margin.

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Use a consistent historical series

Granite Construction’s 2025 annual report reports construction-segment gross profit margins of 10.9% in 2023, 14.4% in 2024 and 15.7% in 2025. These are historical figures for that company and segment, not a target range or sector benchmark. The useful analytical question is why the trend changed and whether the drivers are repeatable.

Trace the operational causes of margin movement

A margin comparison is incomplete until you identify the operational causes. Review management’s discussion, segment notes, project commentary and risk factors for:

• Labor rates, overtime, recruiting difficulty and crew availability.
• Material prices, escalation clauses and supply interruptions.
• Subcontractor pricing, availability, performance and replacement costs.
• Productivity, equipment utilization and rework.
• Weather, owner-caused delays, access problems and schedule extensions.
• Design changes, differing site conditions and scope growth or reduction.
• Claims, back-charge recoveries, settlements and other non-recurring items.
• Changes in estimated total cost on fixed-price projects.

A higher margin can result from better execution, favorable claims resolution, mix or a one-time recovery. A lower margin can reflect an isolated troubled project or a broader deterioration in pricing and productivity. Separate these explanations before extrapolating a quarterly result.

How cost-to-cost accounting changes reported profit

Many long-term construction contracts recognize revenue over time using a cost-to-cost approach. Progress is estimated from costs incurred to date divided by estimated total costs. As the estimate of total cost changes, the amount of revenue and profit recognized on work already underway can change.

For example, if a fixed-price project was initially expected to cost $80 million and later is expected to cost $90 million, the forecast profit falls even if the contract price is unchanged. The accounting effect depends on progress and the company’s contract rules, but the analytical implication is consistent: reported margin includes management estimates about future labor, materials, subcontractors, productivity, claims and completion costs.

Read whether the company records losses immediately when a project is expected to be unprofitable, how it handles change orders and claims, and whether prior-period estimates were revised. A pattern of repeated cost-to-complete revisions is a warning that current margins may be less stable than they appear.

Questions to ask when estimates change

• Was the revision caused by a specific project or by several projects?
• Did labor, materials or subcontractor costs change, or did productivity miss plan?
• Was the change linked to an owner delay, design issue or site condition?
• Is the revised cost supported by an approved change order, or is recovery uncertain?
• Did the company revise only the current period, or restate expected profit over the remaining contract?
• Are unfavorable changes concentrated in fixed-price work?

Step 4: Measure customer concentration

Customer concentration starts with a simple calculation:

Customer concentration = revenue from a named customer ÷ total revenue × 100.

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Use the customer’s share of revenue for the same fiscal year and define whether the disclosure covers consolidated revenue, a segment or a geographic unit. Then extend the analysis beyond the single customer percentage.

Use disclosed figures correctly

Granite Construction reported that the California Department of Transportation (Caltrans) generated $446.6 million, or 10.1% of total company revenue, in 2025. Its filing also said no other individual customer exceeded 10% in the years shown. This is an issuer-specific illustration from a U.S. public-company filing, not a universal safe or unsafe threshold.

Look through the legal customer to the economic exposure

A customer list can look diversified while demand is concentrated in one funding source. Group customers by:

• Public agency or related government program.
• End market, such as transportation, water, buildings or energy.
• Geography and regional construction cycle.
• Prime-contract versus subcontract relationships.
• Commodity, tax base or infrastructure budget supporting the work.

For example, several state or municipal agencies may ultimately depend on the same federal funding program. Several private customers may be exposed to one commercial real-estate cycle. This correlated exposure can matter even when no individual customer exceeds a reported disclosure threshold.

Granite describes pursuing public and private work across end markets, geographies, procurement methods and contract types as a diversification approach. Use such statements as a map of intended diversification, then test whether revenue, backlog and receivables actually show that spread.

Compare two construction companies without creating false precision

Use the following framework before ranking companies by backlog or margin.

If a comparable value is not disclosed, record “not stated” rather than treating the omission as zero. A company that does not publish backlog by customer, funding status or timing may still be healthy; it simply requires more conservative interpretation.

A practical worksheet for a filing-by-filing review

1. Collect the latest annual report and the preceding two periods. Use the same fiscal-year basis for backlog, revenue, margins and customer disclosures.
2. Copy the backlog definition. Mark executed, funded, probable, optional, disputed and joint-venture components.
3. Record ownership and pass-through treatment. Note whether values are gross or the company’s share and whether third-party costs are included.
4. Build the backlog bridge. Reconcile beginning balance, awards, revenue recognized and adjustments where the filing provides enough detail.
5. Map timing and cancellation risk. Identify multi-year projects, delayed starts, termination rights and remaining approvals.
6. Calculate segment gross margin. Use gross profit divided by revenue and keep the accounting basis consistent.
7. Explain every material margin change. Tie movement to labor, materials, subcontractors, productivity, delays, scope, claims or cost estimates.
8. Calculate named-customer shares. Divide disclosed customer revenue by total revenue for the same year.
9. Check correlated concentration. Group customers by agency, end market, geography, project and funding source.
10. Write a conditional conclusion. State what is visible, what is uncertain and which assumptions would most affect the result.

Red flags that deserve follow-up

• Backlog rises mainly through awards that are unsigned, unfunded or optional.
• The company changes its backlog definition or begins including a new category without a comparable historical series.
• Backlog growth is accompanied by falling gross margin or repeated cost-to-complete charges.
• Large projects have broad termination rights, unresolved claims or delayed notices to proceed.
• Gross backlog includes substantial joint-venture or pass-through revenue but the company does not show its economic share clearly.
• Revenue concentration is low only because related agencies or end markets are reported separately.
• Customer revenue is diversified, but receivables or backlog are concentrated in one account.
• Cash flow trails reported profit while work-in-progress assets, unbilled receivables or retainage increase.

How to reach a defensible conclusion

A sound assessment combines three separate questions. First, how much future work is genuinely committed and funded? Second, what margin is the company earning on comparable work, and how sensitive is that margin to estimates? Third, how exposed are current revenue and future awards to one customer or a correlated group of customers?

Describe the answer with qualifications tied to the evidence: the company, fiscal year, segment, contract definition, ownership share and customer disclosure. A backlog total without those labels is not an analysis. Nor is a margin percentage that ignores cost-to-complete revisions or a customer percentage that ignores shared funding programs.

Backlog, margins and concentration should therefore be read together. High-certainty, funded backlog with stable margins and broad end-market exposure is materially different from a larger headline backlog dominated by conditional awards, pass-through costs, volatile fixed-price projects or one public program.

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