Engineering services consolidate.
Succession decides the timing.
Succession, not the cycle, is putting engineering consultancies into play. How firms in building services, water and environmental engineering change hands, and what it means for the timing of your own decision.
2026 · © NEVON GMBH
Foreword
The engineering-consultancy mid-market in DACH is consolidating, and the driver is demographic: a generation of founders reaching retirement, meeting capital.
A large number of technically excellent, sub-scale firms are reaching an ownership transition at the same moment that strategic groups and private-equity platforms have identified the sector as a durable, recurring-revenue play. This report describes that market briefly, then turns to what matters for an owner: how firms in building services, water and environmental engineering are actually changing hands, who is buying, what they pay for, and what it means for the timing of your own decision.
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Where the market stands
The DACH engineering-services market resists a single headline figure: its disciplines are measured on incompatible bases, and no one number captures them all. What can be stated precisely is the shape of the market and the forces now reshaping it.
Deeply fragmented
It is, first, deeply fragmented. The German engineering-office landscape is a long tail of owner-led firms of fifteen to sixty engineers, each holding qualifications, client frameworks and regional relationships that are slow to build and, individually, modest in scale. That structure was stable while its founders were in mid-career. It is not stable through what is coming.
Demographic
What is coming is demographic, and it runs across the whole economy rather than this sector alone. Taking the German Mittelstand as a whole, 57% of owners were 55 or older in 2025, up three points in a single year and nearly three times the share of two decades ago1. On the KfW's figures, roughly 109,000 owners a year across all sectors intend to hand over a business through to the end of 2029, while about 114,000 a year now expect to close instead, the first time on record that planned closures outnumber planned successions1, with 47% of those closing reporting no family successor. Engineering offices sit inside that population, not apart from it; as the next section sets out, they are if anything more exposed to the trend than the average firm.
Capital
Meeting that supply is capital. Strategic consolidators and private-equity platforms have identified engineering and environmental services as a durable, recurring-revenue professional-services play, and both are acquiring actively.
1 KfW Research, Nachfolge-Monitoring Mittelstand 2025 (published January 2026).
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Why firms are changing hands
The pivot from market to M&A is a single mechanism: demographic supply meeting institutional demand, in a sector whose economics suit consolidation unusually well.
Succession is the supply side
Engineering consultancies are more exposed to that demographic wave than the average Mittelstand firm, not less. Value is concentrated in the founding principals; the firms are typically too small to promote an internal buyer with the financing capacity to take over; and the technical qualifications that create the value are personal to the individuals who hold them. Where no successor exists inside the firm, an external transaction is not one option among several.
Consolidation economics are the demand side
A fragmented, recurring-revenue, low-capital-intensity professional-services sector is close to an ideal buy-and-build substrate: acquirers add a discipline, a client framework or a region through bolt-ons, then create value by professionalising the back office, cross-selling across the project lifecycle and lifting utilisation. The regulatory drivers behind each discipline, building decarbonisation, water compliance, CSRD reporting, reinforce the appeal, because they convert episodic project work into repeatable, mandated engagements. That recurring quality is what re-rates a firm from a project house into a platform asset.
before size
Buyers screen on earnings quality before size, and the order matters. Recurring or framework revenue, high cash conversion, low capital intensity and growth ahead of the market clear the bar; scale does not, on its own. In our mandates a well-run firm of thirty people with those characteristics consistently draws more competitive interest than a larger, project-lumpy one. Scale is what a platform adds after closing. Quality of earnings is what it cannot add, and therefore what it pays for.
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Who is buying
Three buyer groups are active, with materially different logic. Each is illustrated by a completed transaction, not as an endorsement, but because what a group has actually bought is a better guide to how it will value your firm than what it says it seeks.
Multidisciplinary strategic consolidators
Large European engineering and consultancy groups, acquiring capability and regional density and cross-selling across the project lifecycle. They typically integrate the target into the group brand. Sweco's purchase of the German water and wastewater specialist Frilling + Rolfs, around 30 experts, roughly €5.4m of revenue, is characteristic: a small, technically specific firm bought to establish a position in a growing regulated segment2.
Private-equity platforms
Sponsors building sector roll-ups, aggregating founder-owned specialists and professionalising them, generally preserving the brand and re-investing management through rollover equity. Ares Management's acquisition of SLR Consulting is the reference case for the model at scale: under its prior sponsor, SLR completed 15 add-on acquisitions and more than doubled EBITDA before changing hands3. Carlyle's majority investment in the sustainability advisory Anthesis followed the same playbook, alongside employee shareholders and a re-investing minority sponsor4.
Adjacent strategics and sector specialists
Acquirers buying an adjacent discipline to complete their own offering, often to internalise a capability they currently procure. The Zech Group's integration of the TGA planning house Schneider Engineering is the pattern: a construction group taking building-services design in-house rather than buying it in on each project5.
2 Sweco announcement, acquisition of Frilling + Rolfs GmbH (2024).
3 Charterhouse Capital Partners / SLR Consulting announcement (2022; completion Q4 2022): SLR was subsequently acquired by Ares Management.
4 Carlyle, ‘Carlyle to acquire majority stake in Anthesis’ (2023).
5 Zech Group / Schneider Engineering, integration and rebranding of a German TGA planning specialist (2024–25).
Acquirer announcements.
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What buyers pay for
Buyers price engineering-services firms on a multiple of their sustainable profit (EBITDA), but there is no single ‘sector multiple’. Two firms with the same earnings can be worth very different amounts, and what separates them is specific to each business.
Four factors move the number more than any others.
Revenue quality: the share of framework, service and compliance-driven revenue against one-off project fees.
Client concentration: the proportion of revenue, and more tellingly of gross margin, in the top three clients.
Key-person dependency: whether the reputation, qualifications and relationships sit with the principal or with a transferable bench.
Digital maturity: whether delivery is model-based and repeatable, or bespoke and manual.
An owner can work on all four in advance, and addressing them before going to market, rather than during a live process, is what lifts the multiple the business can achieve.
On size: this is a bolt-on market
The defining transactions involve targets of roughly 20 to 60 engineers, frequently well under €20m of revenue, bought for a capability, a client framework or a regional position, not for scale. The practical implication is worth stating plainly, because we meet the misconception constantly: firms dismiss themselves as too small to interest a serious acquirer at exactly the size where serious acquirers are most active.
EBITDA
In our DACH mandates we see engineering firms transacting across a wide band, roughly 6x to 11x EBITDA. Where a firm lands is driven mostly by the four factors above: the low end is a project-lumpy firm dependent on its founder; the high end combines recurring revenue, low key-person dependency and demonstrable digital maturity. But the strongest single pull toward the top of the band is a distinctive, defensible specialisation, a technical niche a strategic acquirer cannot easily replicate. That scarcity, more than size or even margin, is most often what earns the premium.
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Where interest concentrates
The sub-sectors below are the ones generally in demand across the engineering-services market. The marker indicates the breadth of buyer interest, not the quality of any individual firm.
Building services (TGA) planning
Mechanical, electrical and plumbing (MEP) design. Recurring service and retrofit work driven by building decarbonisation and the shift from new-build to renovation.
Water & wastewater engineering
Municipal and utility water, treatment, flood protection. Regulation-driven and non-discretionary; resilient through the cycle.
Environmental & permitting
Environmental impact assessment, approvals, contaminated land. The rate-limiting step on grid, transport and renewables projects.
ESG & sustainability advisory
CSRD-driven reporting and climate advisory. Recurring by regulation; digital-forward; the fastest-growing adjacency.
Structural / civil engineering
Fragmented, broad buyer set. Steady demand, more commoditised at the smaller end.
Geotechnical & ground investigation
Testing-plus-advisory models. Most attractive where integrated with delivery capability.
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Selected transactions
A selection of completed engineering and consulting transactions from recent years, most recent first. Together they show the pattern behind the market: strategic consolidators and private-equity platforms acquiring specialist, founder-led firms across building services, water and environmental engineering.
| Transaction (completed) | Target profile & rationale | Completed |
|---|---|---|
| Sweco / Volantis Groep B.V. | Dutch architecture and engineering consultancy; ~€19.1m revenue, healthcare and industrial focus. Capability and geographic density. | 2025 |
| Ramboll / Temple Group | UK environmental consulting and sustainability advisory. Deepened environmental and permitting capability in a European platform build. | 2025 |
| Zech Group / Schneider Engineering GmbH | German TGA planning specialist across four sites. Integrated and rebranded: a construction group internalising building-services design. | 2024–25 |
| ERM / Energetics | Climate-risk and energy-transition consultancy. Consolidation within ESG and sustainability advisory. | 2024–25 |
| Sweco / Frilling + Rolfs GmbH | German water and wastewater engineering specialist; ~30 experts, ~€5.4m revenue. Entry point into the German municipal water market for a Nordic consolidator. | 2024 |
| Ramboll / civity Management Consultants | German transport and public-sector strategic advisory. Added management-consulting capability in DACH. | 2023 |
| Carlyle / Anthesis | Majority stake in a pure-play sustainability advisory (~1,250 specialists), alongside employee shareholders and a re-investing minority sponsor. | 2023 |
| Ares Management / SLR Consulting | Global environmental and sustainability consultancy, acquired from Charterhouse. 15 add-ons and EBITDA more than doubled under the prior sponsor. | 2022 |
Transaction details are drawn from acquirer announcements.
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Outlook
Sustained consolidation through 2026 and 2027
The succession wave and the availability of both strategic and financial capital point to sustained consolidation through 2026 and 2027: continued bolt-on activity, further private-equity platform formation in building services and environmental engineering, and the gradual professionalisation of a market that has been artisanal by design.
A driver that does not turn with the cycle
The demographic driver underpinning it does not turn with the cycle: owners reach the end of their careers on schedule, and the supply of firms coming to market grows regardless of conditions.
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Implications for owners
Preparation is the lever you control.
The factors that set your valuation are mostly improvable in advance, so the strongest negotiating position is built before a process begins, not during it.
Being small is not disqualifying.
The most active part of this market sits well below the size at which most owners assume a serious acquirer becomes interested.
Buyer type shapes the outcome as much as price.
Strategics integrate; sponsors preserve the brand and re-invest management.
Succession timing is a strategic lever, not an administrative deadline.
Engaging from strength, early, is priced differently from transacting under time pressure, and the difference shows in the structure long before the price.
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Experienced. Digital. Human.
The market this report describes, a succession wave meeting institutional capital, rewards advisers who combine sector fluency with discipline. That is the ground Nevon Partners is built for. Three principles guide how we work alongside founders, owners and investors in engineering and environmental services.
Partner-led.
Every mandate is led by a Partner from start to closing. The people you meet leading up to a mandate are the people who run the process, so you get the full benefit of senior experience.
Digitally powered.
Data and AI tools sharpen our work, mapping buyers, benchmarking valuations and running tighter processes, so you reach the right outcome with fewer surprises.
Human at the core.
Handing over an engineering firm is a personal decision, not only a financial one. Deals turn on trust, and earning it on both sides of the table is the part of the work we care about most.
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If you are considering a transaction in engineering services, whether a sale, a succession, a carve-out or a capability acquisition, or you simply want to compare notes on the market, we would welcome a conversation.
Engineering services consolidate.
Capital follows.
So should advice.
© 2026 Nevon Partners. For information purposes only. Not investment, legal or tax advice. Figures are drawn from public sources believed reliable but not independently verified. Observations attributed to Nevon Partners, including the valuation range, reflect our own mandate experience and are not statistically representative.
2026 · © NEVON GMBH