Engineering businesses in Australia typically sell for 3x to 5x EBITDA. Specialist firms with government frame contracts, multiple licensed engineers, and genuinely diversified client bases can reach 6x or above; sole-principal practices where the clients follow the founder will struggle to break 3x regardless of how good the work is. The exact number comes down to two things: how much the business depends on you personally, and the quality and predictability of your revenue.
Have you built a business, or have you built yourself a very technical job?
What the Numbers Actually Look Like
Engineering firm multiples in Australia vary more than most industries because the range of businesses sitting under the “engineering” label is enormous. A five-person civil consulting firm in Perth doing council drainage work is a fundamentally different business to a twenty-person structural engineering practice with ongoing retainer arrangements across three states.
Here’s how the market broadly prices them:
| Business Profile | EBITDA Multiple Range |
|---|---|
| Sole-principal, owner-led projects, high client dependency | 2.5x – 3.5x |
| Multi-director firm, 5–15 staff, mixed project and retainer work | 3.5x – 5x |
| Specialist or niche firm, government frame contracts, strong team | 5x – 7x |
| Mining services engineering with major resources clients (WA/QLD) | 3x – 5x |
These are multiples of normalised EBITDA — not your net profit figure from the tax return. Before you apply any multiple, you need to adjust your profit figure: add back salary above what a replacement principal would cost, remove personal expenses run through the business, and strip out any one-off costs or income that won’t repeat. That’s what a buyer is actually paying for.
Rule of thumb: an engineering consultancy doing $2M in revenue with reasonable margins should generate $280,000 to $450,000 in normalised EBITDA. At current market multiples, that’s $840,000 to $2.25M in business value. The gap between those two numbers is mostly determined by how dependent the firm is on you.
For a detailed walkthrough of what gets added back in a sale process, see EBITDA Add-Backs When Selling a Business.
The Key Person Problem — and Why It Matters More in Engineering
This is the one that catches most engineering firm owners off guard, and it’s worth spending time on.
Engineering is a credentialed profession. Clients often engage your firm specifically because of your personal reputation, your PE stamp, your relationships with local government planners, or your track record on a particular type of project. That’s good for winning work. It is terrible for your sale price.
A buyer looking at your firm will ask: what happens to the clients if the founder leaves? If the answer is “most of them probably follow you” or “we’d have to renegotiate all the contracts from scratch,” the buyer will price that risk into their offer — usually by reducing the multiple, structuring an earn-out, or both.
I worked with an owner of a structural engineering firm in Perth — fifteen staff, $3.2M in revenue, solid profitability. He was expecting around a 5x multiple. His PE stamp was on most of the projects, most of the council relationships were his, and when we went to market we found three credible buyers. Each one came back with the same concern: what retains the clients if you walk out? The deal we got done was at 4x EBITDA with a two-year earn-out tied to revenue retention. Not a disaster — but he left close to $600,000 on the table compared to his original expectations. (He had done his numbers, which is more than most do. He just hadn’t done his risk assessment.)
The solution isn’t complicated, but it takes time: build a second tier of engineers who have their own client relationships, get contracts executed between your firm and the client rather than just with you personally, and ideally have at least one other chartered or registered engineer who can stamp drawings in your absence. None of that happens in the six months before you decide to sell.
What Buyers in Engineering Actually Look For
Beyond the financials, buyers of engineering businesses in Australia weight the following heavily:
Recurring and contracted revenue. Frame agreements with local councils, state government, mining companies, or large infrastructure contractors are the most valuable client relationships you can hold. They’re contracted, they repeat predictably, and they don’t require renegotiation on each job. A $500,000 frame contract that generates work across twelve months is worth considerably more to a buyer than $500,000 in one-off project revenue.
A team with transferable licences. If you have three or four engineers who are Registered Professional Engineers (RPEQ or RPEQ equivalent in your state), NER-registered, or chartered through Engineers Australia, that’s a saleable asset. The work doesn’t have to come through you if the licences sit with the team.
Professional indemnity insurance history. Buyers want to see a clean PI insurance record. Claims, near-misses, or gaps in cover make due diligence uncomfortable. Before you go to market, get a handle on your PI history and make sure it’s documented and clear.
Geographic and sector diversification. A firm with clients across government, private construction, and resources — or across more than one state — is more resilient than one with 80% of its revenue from a single sector. Buyers discount concentration risk heavily.
To understand how buyers assess a business more broadly, see What Buyers Look for When Buying a Business.
Engineering Subsectors: Not All Multiples Are Equal
The type of engineering your business does matters for valuation, not just the size of it.
Civil and infrastructure consulting tends to attract the strongest multiples when backed by government relationships. Long-term infrastructure pipelines in WA, QLD, and NSW mean acquirers — often larger national engineering groups — are paying for access to government panels and procurement relationships, not just cash flow.
Environmental engineering is a sector with growing demand from resources, agriculture, and property development. Firms with specialist environmental licensing, contaminated site assessment capability, or relationships with state environmental regulators are genuinely hard to replicate and buyers know it.
Electrical and mechanical engineering businesses that service industrial or mining clients in WA often trade on lower multiples (3x to 4.5x) because the work is more project-dependent and the staff turnover in resources-adjacent businesses can be high. Firms with maintenance contracts — not just project work — command a premium in this space.
Geotechnical and survey firms are often acquired by larger civil or infrastructure players who want the capability in-house. If you hold a geographic monopoly or near-monopoly in a regional area, buyers will pay for that.
Revenue Multiples as a Cross-Check
EBITDA multiples are the primary method, but buyers and advisors will often run a revenue multiple as a sanity check — particularly when the engineering firm’s margins are unusually high or low.
For Australian engineering businesses, revenue multiples typically range from 0.5x to 1.2x. A profitable specialist firm might land at the upper end; a generalist firm with modest margins will be closer to 0.5x. If your EBITDA multiple implies a revenue multiple significantly outside this range in either direction, it’s worth understanding why before you go to market.
Rule of thumb: if your engineering business does $3M revenue at a 20% EBITDA margin, your EBITDA is $600,000. At 4x EBITDA, that’s $2.4M — which is 0.8x revenue. That sits squarely in the normal range for a well-run mid-size consultancy.
What Reduces Your Multiple
Several factors can compress your valuation below what the headline range would suggest:
Client concentration. If more than 30–40% of your revenue comes from a single client, buyers will reduce their multiple or structure the deal with contingent payments tied to that client’s retention. Two clients at 30% each is almost as problematic.
Disputed or uncertain PI claims. A professional indemnity claim in progress — or even one that was resolved but left a mark — creates anxiety in due diligence. Be transparent about history and make sure the insurer has confirmed ongoing cover.
Work-in-Progress complexity. Engineering firms often have significant WIP and retention balances. If your WIP is hard to value or your retentions are overdue, buyers will factor that into pricing. Clean, documented WIP schedules help.
Sole ownership without succession. A firm where the owner is the only registered engineer, holds all client relationships, and hasn’t built a successor is structurally harder to sell. The buyer is essentially purchasing a name and some equipment, not an enterprise.
To understand how to increase your multiple before going to market, see How to Increase Business Value Before Selling.
Tax and Deal Structure
Engineering businesses in Australia are typically sold either as a share sale or an asset sale. Share sales are generally more tax-efficient for sellers — you sell your shares and any gain is treated as a capital gain, potentially qualifying for the 50% CGT discount and small business CGT concessions if you meet the eligibility tests.
Asset sales are more common when the buyer wants a clean start without inheriting the company’s liability history — which matters in professional services where old project liability can sit dormant for years.
For a full breakdown of how structure affects your tax outcome, read Tax on Selling a Business in Australia and Asset Sale vs Share Sale.
Frequently Asked Questions
How do you value an engineering firm? Engineering firms in Australia are primarily valued on a multiple of normalised EBITDA — typically 3x to 5x for most SMEs. First, calculate EBITDA after adding back owner salary above market rate and personal expenses. Then apply a multiple based on client diversification, key person dependency, and recurring contract strength.
How do I value my business in Australia? The most common method for Australian SMEs is a multiple of normalised EBITDA. For engineering firms, multiples range from 2.5x to 7x depending on business type, recurring revenue, and owner dependency. Get a formal valuation from a corporate advisor or business broker before going to market.
What is the rule of thumb for engineering firm value? A commonly cited rule of thumb is 3x to 5x EBITDA for a mid-size Australian engineering consultancy. Firms with government frame contracts and multiple licensed engineers on staff can reach 6x to 7x. Owner-operated sole-principal practices rarely exceed 3x regardless of revenue.
How much is a business worth with $1 million in sales in Australia? An engineering firm with $1M revenue might generate $150,000 to $250,000 in EBITDA, putting the business value at $450,000 to $1.25M at current market multiples. Revenue multiples for engineering businesses range from 0.5x to 1.2x depending on profitability and contract quality.
How much do engineering firms sell for? Australian engineering businesses typically sell for $500,000 to $5M for SMEs. Larger specialist firms or those with long-term government contracts can exceed $10M. The sale price is primarily driven by EBITDA, client concentration, and how transferable the business is without the owner.
If you want to understand what your engineering business is actually worth — not an estimate from a multiple calculator, but a real picture of what a buyer would pay and why — use our valuation calculator as a starting point, or talk to us directly. We work with engineering firm owners across Australia and can give you an honest read on where you stand before you decide anything.