M&A activity snapshot
Civil engineering firms are selling into a market where private equity sets the pace. Capstone Partners counted 361 AEC services transactions in 2025, a 10.1% increase, with PE add-ons rising 34.5% to 117 deals. Capstone's figures cover architecture, engineering and construction services together. No major data provider publishes a civil-only deal count, so treat these as the closest proxy.
Valuations rose with the competition. AEC services M&A averaged 13.2x EV/EBITDA in 2025, up from 11.1x in 2024. The cleanest civil comp is AtkinsRéalis's purchase of Portland-based David Evans and Associates, valued at $428.6 million, or 1.6x revenue and ~12.2x EBITDA. David Evans generates approximately US$275 million in annual revenue, with over 50% from the Transportation sector.
Most civil deals are small, regional and undisclosed. Capstone's 2025 deal log includes Green International Affiliates to Lochner, Veenstra & Kimm to Kleinfelder, Horizons Engineering to Verdantas, and MV Engineering to Pennoni. Where small-deal terms do surface, they are modest: Bowman's purchase of civil and surveying firm UP Engineering was logged at $3.5 million, about 1.2x revenue.
Who is buying
PE-backed civil platforms do most of the add-on buying. Advent International agreed in March 2026 to make a significant investment in Atwell, a Michigan firm with 2,000 professionals. Advent cited infrastructure investment, energy transition tailwinds, and an underbuilt housing market as its thesis.
Palm Beach Capital's newsroom lists Pape-Dawson's April 2023 strategic partnership with Palm Beach Capital and later add-ons such as Georgia-based Eberly & Associates. Platform Holdings Capital-backed PRIME AE bought Florida civil firm Faller, Davis & Associates in December 2025, its seventh acquisition in the past five years. Kelso & Company and ARA Services Partners bought Galloway & Company, citing an 18% average annual growth rate over the past 11 years.
Public strategics buy for geography and DOT relationships. Capstone counted public strategic M&A up 42.9% to 50 transactions in 2025. AtkinsRéalis bought a 70% stake in David Evans for approximately US$300 million in cash, and Bowman completed six transactions in 2025.
Private and employee-owned strategics remain the largest group even as they lose share. Private strategic volume fell 9% to 172 deals, yet still made up 47.8% of sector deal activity.
What buyers look for
Client mix. Public DOT, municipal and water-authority work is sticky but gated by procurement rules. Private land development is faster-paying but tied to housing and commercial cycles. Bowman reports that approximately 30% and 27% of its 2025 and 2024 revenue came from public sector customers, and that approximately 73% came from repeat customers. Buyers ask targets for the same split.
DOT prequalification as an asset. State DOTs qualify consultants by type of work before they can be shortlisted. Florida's Rule 14-75 requires an audit report by an independent CPA within six months of fiscal year end that states overhead rates. It also bars listing key personnel at two qualified consultants, so losing listed engineers can affect the qualification status of the previous employer.
Qualifications-based selection. Federal design work runs under the Brooks Act. The FAR requires agencies to negotiate contracts based on the demonstrated competence and qualifications of prospective contractors at fair and reasonable prices. Price is not the selection lever, so past-performance records and Standard Form 330 qualification files carry real value.
Licensed depth and backlog. Bowman says its licensed professional staff represented approximately 35% of its workforce. On backlog, the ACEC Research Institute found half of respondents report backlogs of one year or more, with the median at 12 months. Zweig Group's fiscal 2025 benchmark shows a lower median backlog of 8.9 months, down from 10.7 months. The two surveys use different samples, so buyers benchmark against both.
What makes a strong company
Civil firms that draw competitive bids tend to show:
- Pricing discipline. Zweig found firms with very high profitability earned a median net multiplier of 3.43, compared to 3.05 for firms with low profit or losses.
- Fast billing. Zweig's median work-in-process turnover improved from 22 days to 18 days; a target well above that ties up working capital.
- Current DOT prequalification in several work types, with an audited overhead rate and more than one licensed engineer listed per type.
- Low client concentration. Bowman's ten largest customers were approximately 13% of 2025 net service billing.
- A second generation of PEs of record, so licenses and DOT qualifications do not depend on one or two owners.
- An ownership structure that already meets each state's firm-licensure rules.
Valuation and deal structure
Public acquirers' own multiples set a ceiling for strategic bids. As of May 15, 2025, Capstone's AEC index showed Bowman at 19.2x LTM EBITDA, AECOM at 13.8x, and a median of 14.7x. Private civil firms trade below that, and small practices often price on revenue.
Licensure law shapes structure. North Carolina requires firms to be at least 2/3 owned by the Licensees to qualify as professional corporations, and permits ESOPs only if ALL Trustees are licensees. Where states bar corporate licenses, Bowman has formed professional services corporations owned by Mr. Bowman and other employees. Sponsors without licensed owners need a similar plan state by state.
Partial sales are common. In the David Evans deal, AtkinsRéalis took 70% with a clear path to entire ownership within a defined agreed time period, while employee shareholders will remain minority shareholders. The sources here do not disclose civil-specific earnout terms. Sellers should expect the question, not assume a standard.
Outlook
Federal transportation funding is the near-term swing factor. IIJA program authorities expired on September 30, 2026, and the law appropriated $5.5 billion per-year for Fiscal Years 2022 through 2026 for the Bridge Formula Program. A continuing resolution extended transportation funding to December 11, 2026. UCS says it cut enacted transportation funding by 25% in total, with transit and rail absorbing cuts while highways were protected.
Labor is the longer-term constraint. BLS counts 380,600 civil engineering jobs in 2025, with about 22,700 openings projected each year. The ACEC Research Institute found Eighty-eight percent of firms report at least one open position. Over the next 12-24 months, expect buyers to keep paying for licensed teams and DOT qualifications, and to discount firms whose backlog rests on unrenewed federal programs.
Own a civil or structural engineering firm and want a sense of its value before you talk to anyone? Run the valuation tool. See also: why vertical-specific buyers outperform generalists in outbound and the Engineering & Environmental Services M&A overview.