Selling your plumbing business? Know your number before anyone else does.
What Australian plumbing businesses are actually worth, what buyers pay premiums for, and the licence and owner-dependency issues that quietly kill deals.
Most Australian plumbing businesses that change hands sell for between 2.0 and 3.5 times normalised EBITDA. Larger operations with contracted maintenance revenue, a second tier of management and licences held by employees rather than the owner can reach 4 to 5 times. The single biggest driver of the gap is not revenue — it is how much of the business walks out the door with the owner.
To 5.0× at the premium end: service and maintenance contracts, 10+ field staff, licences held beyond the owner.
Indicative market observation, not a valuation of your business. Where your business sits in — or beyond — the band is exactly what a valuation establishes.
What buyers pay a premium for
- ·Service and maintenance revenue over one-off project work — contracted strata, real estate and commercial accounts are the strongest signal
- ·A licensed supervisor or nominee who is not the selling owner, so the licence survives settlement
- ·Ten or more field staff with a scheduler or operations lead between the owner and the tools
- ·Clean, accountant-prepared financials with owner add-backs that survive scrutiny
- ·Documented systems: job management software, priced service catalogue, safety and compliance records
What quietly kills plumbing deals
The most common failure is licence dependency: in every state the contractor licence effectively hangs on a nominated individual, and in owner-operator businesses that individual is the seller. If no employee holds the qualified supervisor or nominee position, the buyer is not buying a business — they are buying a job application. The second killer is project concentration: a book of one-off builds with no recurring base is valued closer to the bottom of the band, and sometimes below it. The third is financials that mix lifestyle spending through the P&L so heavily that normalised earnings cannot be supported.
Who is buying plumbing businesses
Four buyer groups are active in Australia: individual owner-operators buying a livelihood (typically sub-$1M deals, bank-financed and fragile), interstate and adjacent-trade strategics adding a service line, franchise and consolidator groups building maintenance density, and — increasingly — private-equity-backed platforms importing the US trades roll-up playbook. The premium buyers are the last two, and they only engage above roughly $1M of sustainable EBITDA with contracted revenue.
When to start
Two to three years before you want to be out. That is how long it takes to move the levers a buyer actually prices: shifting revenue mix toward maintenance contracts, getting a supervisor licensed, stepping out of daily scheduling, and producing two clean financial years. A valuation now tells you which levers are worth pulling and what each is worth to your exit price.
Common questions.
My licence is the business licence. Can I still sell?+
Yes, but the structure matters and the price suffers if you leave it late. Buyers either require a licensed employee in place before completion, or they hold part of the price back while you remain the nominee through a transition. Getting a senior tradesperson licensed 12 to 24 months before sale is usually the highest-return preparation step available.
Is revenue or EBITDA what buyers price?+
EBITDA, normalised for a market salary for the owner. A $3M-revenue business running at an 8% margin is worth materially less than a $2M business at 20%. Rules of thumb quoted on revenue are how owners end up anchored to numbers no buyer will pay.
What does the maintenance-contract premium actually look like?+
A project-only plumbing business and a contract-weighted one with identical EBITDA can sit a full turn of EBITDA apart — often more than $500,000 of price on the same earnings. Contracts are the difference between a buyer purchasing history and purchasing a future.
Where does your business sit in the band?
Five minutes, free, and private. An instant indicative range from your figures, with a human read-through to follow.
What is my business worth?Talk to a valuer
Tell us what you need valued.
A fifteen-minute call confirms the tier, the fixed fee and the delivery date — before you commit to anything.
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Fixed fees from $1,495 + GST · 10–35 business days