Selling an Engineering Firm in 2026: Multiples, Named Buyers, and the AEC M&A Playbook
Quick Answer
A US engineering firm in 2026 typically sells for roughly 5x to 13x EBITDA, with the multiple varying significantly by service-line mix, end-market exposure (especially infrastructure, environmental, transportation, water/wastewater), backlog quality, and platform scale. By profile: a single-office regional civil/structural firm at $1-3M EBITDA goes 5x-7x EBITDA; a small multi-office regional firm with diversified service lines ($3-8M EBITDA) goes 6x-9x EBITDA; a mid-size multi-state engineering platform ($8-25M EBITDA, multi-discipline including civil/transportation/water/environmental) goes 8x-11x; a premium scale platform ($25M+ EBITDA, multi-state, federal/state DOT contracts, IIJA-aligned infrastructure exposure, named federal MSA contracts) reaches 10x-13x+ EBITDA. Active buyers include Stantec (TSX: STN / NYSE: STN, $5B+ revenue Canadian-headquartered global AEC), Tetra Tech (NASDAQ: TTEK, $5B+ revenue, environmental and water focus), NV5 Global (NASDAQ: NVEE, ~$900M revenue, multi-discipline), Bowman Consulting Group (NASDAQ: BWMN, ~$400M revenue, geospatial/transportation), Ardurra Group (PE-backed, infrastructure engineering, ~$500M revenue), Verdantas (The Sterling Group, ~$300M revenue, environmental and water), Olsson (private, large Midwest civil), Kimley-Horn (private/ESOP, large national civil), GHD (Australian, US infrastructure), IMEG (PE-backed, MEP), Salas O’Brien (PE/ESOP), Carollo Engineers, Fehr & Peers, plus PE-backed regional consolidators (The Sterling Group, J.F. Lehman, Stonepeak Infrastructure Partners, AEA Investors, Wind Point Partners, Riverside Company, Pinnacle Partners). The biggest multiple drivers are end-market mix (infrastructure / water / environmental / transportation premium to commercial; IIJA / BIL exposure is a tailwind), backlog quality and visibility, federal/state MSA contracts, licensed PE bench depth across disciplines and states, multi-state professional licensure footprint, and recurring services-revenue percentage. Buyer-paid M&A advisory (CT Strategic Partners) costs the seller nothing.
If you own an engineering firm in 2026 — civil, transportation, water/wastewater, environmental, geotechnical, structural, MEP, or multi-discipline — the M&A market is highly active. Stantec, Tetra Tech, and NV5 Global are the largest public AEC consolidators. Bowman Consulting Group went public in 2021 and continues to acquire. PE-backed platforms like Ardurra (~$500M revenue), Verdantas (Sterling Group, ~$300M revenue), IMEG, and Salas O’Brien continue rolling up regional firms. The IIJA / Bipartisan Infrastructure Law has been a tailwind for infrastructure-aligned firms.
What the asset is worth depends on three things: (1) end-market mix (infrastructure / water / environmental / transportation premium to commercial), (2) backlog quality and visibility (named federal/state MSA contracts), and (3) licensed-PE bench depth across disciplines and multi-state professional licensure footprint. This guide covers real multiples by profile, the named buyers transacting, and the operator-level diligence buyers will run.
This guide is about engineering firms (civil, transportation, water/wastewater, environmental, structural, MEP). If you operate a full architecture firm or design-build practice, see our separate guide at how to sell an architecture firm.
What this guide covers
- Engineering firm multiples 2026: 5x-7x EBITDA for single-office regional, 6x-9x for small multi-office diversified, 8x-11x for mid-size multi-state platforms, 10x-13x+ for premium scale with IIJA/BIL infrastructure exposure and federal/state MSA contracts.
- Active buyers: Stantec (TSX: STN/NYSE: STN, $5B+), Tetra Tech (NASDAQ: TTEK, $5B+), NV5 Global (NASDAQ: NVEE, ~$900M), Bowman Consulting (NASDAQ: BWMN, ~$400M), Ardurra Group (PE-backed, ~$500M), Verdantas (Sterling Group, ~$300M), Olsson (private), Kimley-Horn (private/ESOP), GHD, IMEG (PE-backed), Salas O’Brien.
- PE sponsor activity: The Sterling Group (Verdantas), J.F. Lehman, Stonepeak Infrastructure Partners, AEA Investors, Wind Point Partners, Riverside Company, Pinnacle Partners, plus multiple infrastructure/environmental-services PE funds.
- Multiple drivers: infrastructure/water/environmental/transportation end-market exposure, IIJA/BIL alignment, backlog quality, federal/state MSA contracts, licensed-PE bench depth, multi-state licensure footprint, recurring services revenue.
- Things that compress the multiple: commercial-only end-market concentration, owner-PE dependence, single-client concentration above 20%, weak backlog visibility, single-state licensure, weak PE-bench succession.
- Sellers pay nothing on CT Strategic Partners’ buyer-paid advisory.
Named engineering firm M&A transactions (2021-2025)
| Target | Buyer | Year | What it tells us |
|---|---|---|---|
| Bowman Consulting Group IPO | Public market (NASDAQ: BWMN) | 2021 | Recent AEC IPO established public-market multiples; continues aggressive tuck-in M&A. |
| Multiple Stantec tuck-ins | Stantec (TSX: STN / NYSE: STN) | 2022-2025 | Global AEC public continues geographic and capability tuck-in M&A. |
| Tetra Tech regional tuck-ins | Tetra Tech (NASDAQ: TTEK) | 2022-2025 | Environmental/water leader continues consolidation; IIJA/BIL tailwind helping. |
| NV5 Global continued M&A | NV5 Global (NASDAQ: NVEE) | 2022-2025 | Multi-discipline AEC public continues acquisitive growth. |
| Ardurra continued tuck-ins | PE-backed (multi-sponsor) | 2022-2025 | PE-backed infrastructure engineering platform continues regional rollups. |
| Verdantas growth via Sterling | The Sterling Group | 2022-2025 | PE-backed environmental/water consultancy continues regional rollups. |
The named buyer landscape
Public / strategic AEC buyers
- Stantec (TSX: STN / NYSE: STN, $5B+ revenue) — Canadian-headquartered global AEC consolidator.
- Tetra Tech (NASDAQ: TTEK, $5B+ revenue) — environmental and water specialty leader.
- NV5 Global (NASDAQ: NVEE, ~$900M revenue) — multi-discipline AEC.
- Bowman Consulting Group (NASDAQ: BWMN, ~$400M revenue) — geospatial / transportation / land development engineering. IPO 2021.
- WSP Global (TSX: WSP) — Canadian global AEC.
- AECOM (NYSE: ACM) — selective US M&A.
PE-backed national platforms
- Ardurra Group (PE-backed, ~$500M revenue) — infrastructure engineering.
- Verdantas (The Sterling Group, ~$300M revenue) — environmental and water.
- IMEG (PE-backed) — MEP engineering.
- Salas O’Brien (PE-backed/ESOP) — MEP and consulting.
- Carollo Engineers — water-focused.
- Multiple PE-backed regional platforms across the US.
Private / ESOP-owned national firms
- Kimley-Horn (private/ESOP) — large national civil engineering.
- Olsson (private) — Midwest civil engineering.
- GHD (Australian) — US infrastructure presence.
- Fehr & Peers, Burns & McDonnell (ESOP), HDR (ESOP) — private/ESOP firms not active acquirers in their model.
PE sponsors active in this space
- The Sterling Group (Verdantas), J.F. Lehman, Stonepeak Infrastructure Partners, AEA Investors, Wind Point Partners, Riverside Company, Pinnacle Partners, plus multiple infrastructure/environmental-services PE funds.
What each buyer will pay for vs. what they reject
- Will pay premium for: infrastructure / water / environmental / transportation end-market mix, IIJA / BIL alignment, named federal MSA contracts (DOT, DOE, EPA, USACE, USGS, Army Corps), state DOT MSAs, strong backlog visibility (12-18 months forward), licensed PE bench across disciplines and states, multi-state professional licensure footprint, recurring services revenue (compliance, monitoring, water/wastewater operations).
- Will compress or reject: commercial-only end-market concentration without infrastructure exposure, owner-PE dependence, single-client concentration above 20%, weak backlog visibility, single-state licensure footprint, weak succession bench, undocumented PE-licensing, project-cost-overrun history, professional liability claim history.
The operator-level KPI playbook buyers will diligence
End-market and service-line mix
- End-market mix: Transportation %, water/wastewater %, environmental %, building structural %, MEP %, geotechnical %, land development %, commercial %.
- Public vs. private client mix: Federal, state DOT, municipal, private commercial, private residential.
- IIJA/BIL-aligned revenue: Document infrastructure-bill-tailwind revenue exposure.
- Recurring vs. project revenue: Compliance, monitoring, water/wastewater operations contracts.
Backlog and pipeline
- Backlog: Documented in months or dollars; 12-18 months forward visibility is the platform benchmark.
- Win rate: RFP/RFQ win rate by client type.
- Pipeline: Pursued opportunities, weighted by probability.
- Customer concentration: No single client above 20%.
Federal/state MSA contracts
- Federal MSAs: GSA schedule, DOT, USACE, EPA, DOE, USGS, etc.
- State DOT contracts: By state, with task-order count and history.
- Set-aside qualifications: SDB, HUBZone, WOSB, VOSB, 8(a) status if applicable.
Professional licensure
- PE count by state: Documented; multi-state coverage is a multiple-builder.
- PE bench depth: Tenure, age distribution, succession plan.
- Specialty discipline licenses: SE (structural engineer), PG (professional geologist), CCM (certified construction manager).
Project and financial KPIs
- Utilization: Billable hours / available hours; 65-78% is healthy for AEC.
- Realization: Billed vs. budgeted hours by project.
- Net multiplier: Net revenue / direct labor cost; 3.0+ is healthy.
- Project margin: Track by project, by service line.
- Days in AR: <75 days is healthy for AEC (longer than typical services).
Risk and insurance
- Professional liability claim history: 5-year claim history; documented and resolved.
- Insurance coverage limits: PE&O coverage levels documented.
- Project risk-management protocols.
Dangers and traps in engineering firm M&A
1. Commercial-only end-market concentration
Premium multiples come from infrastructure / water / environmental / transportation. Commercial-only firms compress.
2. Owner-PE dependence
If the founder/principal PE is the rainmaker for top clients, build the BD and succession bench.
3. Single-client concentration
Above 20% single-client concentration is repriced.
4. Weak backlog visibility
12-18 months forward backlog visibility is the benchmark.
5. Single-state licensure
Multi-state PE licensure is a multiple-builder.
6. Professional liability claim history
Repeated claims raise project-risk-management questions.
7. Federal/state MSA contract loss risk
If a major MSA is up for renewal during the sale process, that creates uncertainty.
8. Equity-rollover expectations
PE-AEC deals often include 20-40% equity rollover for selling PEs/principals. Understand the dynamics before LOI.
Our POV on engineering firm M&A in 2026
- Single-office regional firms ($1-3M EBITDA) go 5x-7x.
- Small multi-office diversified firms ($3-8M EBITDA) go 6x-9x EBITDA.
- Mid-size multi-state platforms ($8-25M EBITDA) are highly leveraged. 8x-11x.
- Premium scale platforms ($25M+ EBITDA, multi-state, IIJA/BIL aligned, federal/state MSA contracts) reach 10x-13x+.
The right time to prepare is 12-18 months before going to market — build the federal/state MSA contract base, develop infrastructure/water/environmental specialty mix, document backlog and pipeline, expand multi-state PE licensure, and build the succession bench.
Preparing your engineering firm for sale: 12-18 months out
- Get multi-year audited or reviewed financials. Track revenue by service line, client type, contract.
- Build infrastructure / water / environmental specialty exposure.
- Lock in federal/state MSA contracts. Multi-year task-order base.
- Document backlog and pipeline. 12-18 months forward visibility.
- Expand multi-state PE licensure.
- Build the succession bench. Reduce founder/principal-PE dependence.
- Resolve professional liability matters.
- Document KPIs. Utilization, realization, net multiplier, project margin.
- Run a competitive process. Stantec, Tetra Tech, NV5, Bowman, Ardurra, Verdantas (Sterling), IMEG, Salas O’Brien, plus PE sponsors (Sterling, J.F. Lehman, Stonepeak, AEA, Wind Point, Riverside).
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Start a Confidential Conversation →Frequently asked questions
What is the typical multiple for an engineering firm in 2026?
Single-office regional firms ($1-3M EBITDA) go 5x-7x EBITDA. Small multi-office diversified firms ($3-8M EBITDA) go 6x-9x. Mid-size multi-state platforms ($8-25M EBITDA) go 8x-11x. Premium scale platforms ($25M+ EBITDA, IIJA/BIL aligned, federal/state MSA contracts) reach 10x-13x+.
Who are the active buyers of engineering firms right now?
Public/strategic: Stantec (TSX: STN / NYSE: STN, $5B+ revenue), Tetra Tech (NASDAQ: TTEK, $5B+, environmental/water), NV5 Global (NASDAQ: NVEE, ~$900M), Bowman Consulting Group (NASDAQ: BWMN, ~$400M, IPO 2021), WSP Global (TSX: WSP), AECOM (NYSE: ACM). PE-backed: Ardurra Group (~$500M), Verdantas (Sterling Group, ~$300M, environmental/water), IMEG (MEP), Salas O’Brien (MEP). Private/ESOP: Kimley-Horn, Olsson. PE sponsors: The Sterling Group, J.F. Lehman, Stonepeak Infrastructure Partners, AEA Investors, Wind Point Partners, Riverside Company.
What hurts an engineering firm’s valuation most?
Commercial-only end-market concentration without infrastructure exposure, owner-PE dependence with weak succession bench, single-client concentration above 20%, weak backlog visibility, single-state professional licensure, repeated professional liability claims, project-cost-overrun history, and major federal/state MSA contracts up for renewal during sale process.
Why is IIJA / BIL infrastructure alignment so important?
The Infrastructure Investment and Jobs Act (IIJA, also known as the Bipartisan Infrastructure Law / BIL) drove significant infrastructure spending from 2022 onward. Engineering firms with named exposure to federal infrastructure programs (DOT, USACE, EPA, DOE) and state DOT MSAs capture material multi-year revenue uplift. Buyers price IIJA/BIL exposure into multiples.
What is the typical equity-rollover structure in engineering firm M&A?
PE-backed and strategic acquisitions of engineering firms often include 20-40% equity rollover for the selling principals / lead PEs. The rollover equity participates in the next platform exit, but understanding the rollover valuation, dilution dynamics, and second-sale terms is critical before signing an LOI.
Do I have to pay a broker fee?
No. CT Strategic Partners runs a buyer-paid M&A advisory model. The seller pays nothing. The buyer pays the success fee at closing.
How long does it take to sell an engineering firm?
Once you go to market with a buyer-paid advisor, a typical process runs 6-9 months from initial outreach to closing. Add 12-18 months of preparation work before going to market.
When should I start preparing if I plan to sell in 2027 or 2028?
12-18 months before going to market is the right window. Highest-leverage pre-sale work: build infrastructure / water / environmental specialty exposure, lock in federal/state MSA contracts, expand multi-state PE licensure, build succession bench, and document backlog/pipeline.
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About the Author
Christoph Totter is the founder of CT Acquisitions, a buy-side partner headquartered in Sheridan, Wyoming. We work directly with 76+ buyers, search funders, family offices, lower middle-market PE, and strategic consolidators, including direct mandates with the largest home services consolidators that other intermediaries can’t access. The buyers pay us when a deal closes, not the seller. No retainer, no exclusivity, no contract until close. Connect on LinkedIn · Get in touch