What is the minimum Google Ads budget for a plumber?

Around $1,000–$1,200 per month in ad spend is the practical floor in Australian metro areas. Below that, you don't generate enough conversion data for automated bidding to optimise, and your ads stop showing for large parts of the day.

Should I spend more in winter?

Yes if you do hot water and heating work — demand rises sharply with the first cold snap. Many plumbers shift 20–30% of their annual budget into the winter months and pull back over summer.

Does management fee count as part of the budget?

Keep them separate in your own reporting. Ad spend goes to Google; the management fee pays for the account work. When you calculate return on investment, include both — that's your true cost per booked job.

How Much Should Plumbers Spend on Google Ads? (2026 AU Guide)

The honest answer is that the right Google Ads budget for a plumber is whatever fills your available capacity without missing calls. But that's not much use if you're staring at a blank budget field, so here are the actual numbers we see across Australian plumbing accounts.

Budget benchmarks by business size

Business size	Monthly ad spend	Expected enquiries
Solo operator, one van	$1,200–$2,000	20–40
Small team, 2–4 vans	$2,500–$4,000	45–85
Established, 5+ vans	$5,000–$10,000	90–200
Multi-city operation	$10,000+	200+

These assume a dedicated landing page, call tracking, and campaigns split by job type. Sending the same budget to a homepage with no tracking typically produces half the enquiries.

What a plumbing lead costs in Australia

$30–$45

Regional and outer suburbs

$40–$60

Metro Brisbane, Perth, Adelaide

$50–$80

Sydney and Melbourne inner areas

$45–$85

Hot water and high-value installs

Work backwards from job value

A budget you can defend comes from three numbers you already know: your average job value, your gross margin and your close rate on phone enquiries.

1
Average job value
Take last quarter's revenue divided by jobs completed. Say $680.
2
Gross margin
After materials and labour, say 45%. That's $306 of margin per job.
3
Close rate
If you book 50% of enquiries, each lead is worth $153 in margin.
4
Set your ceiling
Spending $45 per lead against $153 of margin is a 3.4× return before overheads. Comfortable.

Start smaller than you think, then scale

We'd rather launch a plumber at $1,500 per month, prove the cost per booked job over 60 days, and then double the budget on evidence — than start at $5,000 and spend two months guessing which half is working.

Signs your budget is too low

Impression share lost to budget above 40% on your best campaigns
Ads stopping by lunchtime on weekdays
Only appearing for a fraction of your target suburbs
Not enough conversion data for Google's bidding to optimise (under ~15 conversions/month)