Plumbing businesses in NSW with staff, systems, and steady commercial work are worth more than most owners realise — but only if the owner is not the one quoting, managing jobs, and jumping on the tools simultaneously. The multiple range is 2.0× to 3.5× EBITDA, and where your business sits depends almost entirely on how dependent it is on you.
What the market is paying
| Business type | Typical multiple | Key driver |
|---|---|---|
| Sole operator, residential, no staff | Under $100k goodwill | Effectively a job — not a business |
| 2–4 plumbers, owner managing + on tools, residential focus | 1.5–2.0× EBITDA | Key-person risk, limited transferability |
| 5–10 plumbers, owner managing not on tools, mix of commercial | 2.0–2.5× EBITDA | Transferability improving |
| Established commercial accounts, systems, owner off tools | 2.5–3.5× EBITDA | Recurring commercial work + reduced owner dependency |
The licence question
In NSW, a plumbing business requires a contractor licence held by a licensed plumber. If that licence is held personally by the owner and is not transferable, the buyer needs to hold their own licence or employ a licensed plumber to take over the contractor licence. This is a solvable problem — but it needs to be addressed before going to market, not during due diligence.
Commercial vs residential work
Commercial plumbing work — strata buildings, commercial fit-outs, industrial facilities — is more attractive to buyers than residential service work. Commercial clients tend to be repeat, the work is larger in scale, and the relationships are more transferable. A plumbing business with 60–70% commercial revenue will attract a higher multiple than one that is predominantly residential.
Maintenance contracts: the recurring revenue premium
Plumbing businesses with ongoing maintenance contracts — strata buildings, commercial properties, industrial facilities — have a recurring revenue base that buyers will pay a premium for. Even a modest maintenance book of $150,000–$200,000 per year changes the conversation significantly.
Western Sydney and the Hunter: where the deals happen
The majority of plumbing business sales in NSW occur in Western Sydney (Parramatta, Blacktown, Penrith, Liverpool) and the Hunter Valley (Newcastle, Maitland, Cessnock). These markets have strong construction activity and a large pool of commercial and industrial clients requiring ongoing plumbing services.
What to prepare before going to market
Three years of clean financials. A documented customer list showing revenue by client type (commercial vs residential). Evidence of any maintenance contracts. A clear picture of the owner's role — and a credible transition plan for handing over key relationships. If the owner is willing to stay for a transition period of three to six months, that significantly increases buyer confidence.
