The investment bank for
architecture and engineering firms.
Carleton McKenna & Co advises owners of middle market architecture and engineering firms on sell-side M&A, ESOPs, and ownership transition. Architecture, interiors, civil, structural, MEP, geotechnical, environmental, transportation, surveying, and project management practices.
Design firms
are sold differently.
A design firm is not a contractor and should not be sold like one. Value sits in client relationships, the reputation of the practice in its markets, and the depth of licensed professionals below the founding principals. There is very little in the way of hard assets. An advisor who runs a standard industrial process will mis-position all three and leave the firm looking more fragile than it is.
Our practice covers architecture and interior design firms alongside civil, structural, mechanical, electrical, plumbing (MEP), geotechnical, environmental, transportation, surveying, and project management practices. We advise on sell-side M&A, majority recapitalizations, ESOPs, and internal ownership transition.
Managing Director Chuck Fenske leads our Architecture, Engineering & Construction advisory practice. He is a Certified Valuation Analyst with more than 20 years across M&A, corporate finance, and the construction industry, including operating roles at Pepper Construction and Knoch Construction. He understands how design firms are underwritten and where the valuation conversation is usually won or lost.
Three ways out, and
they are not interchangeable.
Most architecture and engineering firms have been transitioning ownership internally for as long as they have existed. Principals buy in over years, retiring principals are bought out, and the cycle repeats. It is a good system until the group heading for the door is larger or more highly valued than the group behind it can finance. That is usually the moment an owner starts asking what else is possible.
Continue the internal transition
If the next generation of principals has the appetite and the firm can carry the debt, an internal transition preserves everything that makes the practice itself. It is also the option most likely to be chosen by default rather than on the merits. The question worth answering honestly is whether the buying group can fund the retiring group on terms the sellers can actually accept, or whether the firm is quietly deferring the problem to the following cohort.
Sell to a strategic or financial buyer
Strategic acquirers buy design firms to add a discipline, enter a geography, or deepen a client sector. Private equity sponsors buy them as platforms or as additions to one. Both can pay well, and both will underwrite the firm on the durability of its client relationships and the strength of its licensed bench rather than on its assets. A competitive process is what turns that into leverage, because it forces buyers to compete on terms that matter to you — continuity of staff, the firm's name, the pace of integration — not only on price.
Sell to the employees through an ESOP
An employee stock ownership plan suits firms whose value is concentrated in long-tenured licensed professionals and whose owners care about continuity. It carries real tax advantages and keeps the practice independent. It is a positive option, not a consolation prize, and it is also not automatically the right one. An ESOP is a financing transaction with a trustee on the other side of the table, and it should be tested against what the open market would pay before it is chosen.
We work through all three rather than assuming the answer. The right outcome depends on what the retiring owners need, what the remaining principals want, and what the market would actually pay.
Track record, not
marketing claims.
Architecture and engineering M&A,
answered directly.
What types of architecture and engineering firms does Carleton McKenna advise?
Carleton McKenna & Co advises owners of architecture and interior design practices alongside civil, structural, mechanical, electrical, plumbing (MEP), geotechnical, environmental, transportation, surveying, and project management engineering firms. Many of the firms we work with hold more than one of these disciplines under one roof. The firm has experience with both consulting-led practices and design-build operators.
How do buyers value engineering firms?
Buyers underwrite engineering firms primarily on the quality and recurrence of client relationships, billable utilization rates, project mix (master service agreements versus one-off projects), key principal retention, geographic and end-market diversification, and the predictability of forward backlog. Engineering firms with high-margin, recurring or repeat work and bench depth beyond the founding principals typically command higher multiples than project-based contractors.
What size engineering firms does Carleton McKenna work with?
The firm focuses on the middle market: engineering firms typically with revenue between $10 million and $250 million and EBITDA between $3 million and $30 million. Senior bankers lead every engagement from first call through closing.
Who buys engineering firms?
Active buyers include private equity sponsors building AEC (architecture, engineering, construction) platforms, large strategic engineering firms expanding service lines or geographies, infrastructure-focused private equity, and ENR-listed acquirers. Founder concentration risk and key person dependency are the most common diligence walk-aways, so positioning a bench beyond the founding principals is central to process design.
Can an engineering firm owner use an ESOP as an exit strategy?
Yes. ESOPs are particularly well-suited to engineering firms because they preserve client relationships, retain senior technical staff who are often the firm's primary asset, and deliver substantial tax advantages to the selling owner. Carleton McKenna structures and executes ESOP transactions for engineering firms as an alternative or complement to a strategic or private equity sale.
How long does it take to sell an engineering firm?
A typical sell-side M&A process for a middle market engineering firm runs six to nine months from engagement to closing. ESOP transactions follow a different timeline driven by trustee selection, valuation, and financing structure.
Does Carleton McKenna advise architecture firms as well as engineering firms?
Yes. The practice covers architecture and interior design firms alongside the engineering disciplines. Architecture and engineering practices are underwritten on the same things — the durability of client relationships, the reputation of the practice in its markets, and the depth of licensed professionals below the named principals — and many of the firms we advise hold both disciplines under one roof.
Can a non-licensed buyer acquire an architecture or engineering firm?
It depends on the state. Many states restrict ownership of a professional design practice to licensed professionals, or require that a licensed principal remain responsible for the work. That shapes which buyers can acquire the firm outright and how a transaction has to be structured, including whether licensed principals need to retain an interest or stay in responsible roles after closing. It is one of the first questions to resolve, because it narrows the buyer list before a process begins.
What makes selling a design firm different from selling a contractor?
A contractor is underwritten on backlog, bonding capacity, and the ability to execute work at predictable margins. A design firm has almost no hard assets, and its value sits in relationships, reputation, and licensed staff. The diligence questions, the buyer universe, and the structure of the deal all differ. An advisor who runs the same process for both will mis-position a design practice.
Will the firm keep its name and its people after a sale?
That is a negotiated outcome, not a given, and it is one of the main reasons to run a competitive process. When more than one credible buyer is at the table, continuity of staff, the firm's name, and the pace of integration become terms you can press on rather than terms you accept. Owners who care about those outcomes should raise them early, because they shape which buyers are worth talking to.
architecture or engineering firm?
Start with a confidential conversation. We will share what buyers are paying for firms like yours and what your path to closing looks like.