Aussie Leak Detect: 6.8× recorded return on Google Ads spend
Aussie Leak Detect · Leak detection and specialist plumbing · Sydney, NSW
The short version · Selected measured result
Aussie Leak Detect recorded 6.8 times Google Ads spend in won-job revenue, with a $47.28 cost per Google-attributed call or form enquiry in the same selected measurement window.
The result.
6.8×
recorded won revenue relative to Google Ads spend
Selected measured result
$47.28
per Google Ads call or form enquiry
Same selected window · AUD
- Industry
- Leak detection and specialist plumbing
- Discipline
- Plumbing
- Services
- Leak detection and specialist plumbing · Sydney, NSW
- Measured over
- Selected measured result
Selected results from the client’s advertising and, where stated, SoudCoh.app records. The case study explains the measurement basis. Results are account-specific and do not predict another business’s performance.
What would this look like on your account?
Different market, different budget, different numbers. The first call is where we work out whether the same approach fits yours at all.
The case study
What moved for Aussie Leak Detect.
The short list
- 6.8× recorded won-job revenue relative to Google Ads spend.
- $47.28 per Google-attributed phone-call or form enquiry in the same window.
- Specialist leak-detection results are kept separate from other Aussie service accounts.
The figures describe their stated measurement basis and selected window; they are not a forecast.
Specialist demand, measured through to won work
Aussie Leak Detect recorded 6.8 times Google Ads spend in won-job revenue, with a $47.28 cost per Google-attributed call or form enquiry in the same selected measurement window.
Leak detection is a specific customer need. The advertising and landing page need to explain the service clearly and make it easy for someone with a problem to enquire.
A service-specific route to enquiry
SoudCoh works on the connection between the search, the service offered and the next step. Specialist leak-detection work benefits from its own message and service content, rather than being hidden inside a general plumbing offer.
The business belongs to the wider Aussie Home Services group. Electrical, plumbing, drains and roofing have different customer needs; a result for this leak-detection account is not presented as a combined result for the group.
Revenue and enquiry cost from the same window
Recorded won-job revenue is attributed to Google Ads enquiries acquired within the matched measurement window. It is recorded job value, not a statement of cash collected, net profit or margin.
The 6.8× revenue return and $47.28 enquiry cost belong to the same selected window. Revenue return is measured before the costs of delivering the work and agency fees.
What counts as an enquiry
Spend and enquiries use the same measurement window and account timezone. Cost per enquiry includes Google-attributed phone-call and form events recorded in SoudCoh.app; linked CRM call duplicates and hidden spam are excluded. Repeat calls can remain separate enquiries, so this is not a count of unique customers or booked jobs.
Advertising, service content and follow-up
The work is reviewed as a customer journey: finding the right service, understanding the offer, making contact and progressing the enquiry. That allows the conversation to include job outcomes as well as the price of a click.
Explore Google Ads and website work for plumbing businesses, or read the separate Aussie Plumbing call-and-form case study.
Tags
- Leak detection and specialist plumbing
- Sydney, NSW
That is one account. Yours is a different one.
We read your ads, your search presence and your tracking the same way this one was read, and tell you what we would change first.
What every number on this page actually means.
Marketing words get used loosely, and a loose word can make a small result look like a big one. Here is exactly what we mean by each of them.
- Conversion
- An action recorded under the account’s conversion setup, such as a tracked call, form submission, booking or purchase. Platform call/form enquiries are described separately in the study; repeat calls can be separate events, so enquiries are not necessarily unique people.
- Cost per job · cost per lead
- Advertising spend divided by the relevant recorded enquiry or job count. The study identifies the denominator. Enquiry cost is considered alongside lead quality and job value.
- Conversion rate
- The share of people who clicked the ad and then did the thing. A high click count with a low conversion rate usually means the ad and the page are promising different things.
- Ad spend
- Money spent on the advertising platform. The enquiry costs and revenue-to-ad-spend figures here exclude agency fees and the cost of delivering the client’s service.
- The measurement window
- The selected period represented by the result. Exact calendar dates can be withheld for client privacy; the underlying spend and outcomes are checked against the same window.
- A starting point
- Where a study knows what a figure was before the work began, that number is printed next to the one it became. Where the account had no history to compare against, the result is printed on its own rather than measured from a number nobody recorded.
- Qualified lead
- An enquiry that matched the service and the service area, so it was worth someone picking up the phone for. Where a study says qualified, somebody checked.
- An anonymised client
- Government, council and cultural-institution engagements are published as sector and jurisdiction only. The work and the measured outcome are described in full; the organisation is not named.
One more, because it matters most: nothing on this page is a guarantee. It is a record of what happened on one account, in one market, at one budget.
What this study cannot tell you is what the same figure looks like on your account — so work out the ROAS your margin needs, with your own click price and close rate. It takes about a minute and asks for nothing.
This page exists because of two of the six stages.
Compound is how our team works on any account — six stages every change passes through. Two of them are why there is anything honest to publish.
Meter
If it can't be measured, it doesn't get bought.
Before a dollar moves, every action worth money to the business is tracked as itself — calls, forms, bookings, purchases — with values attached. Without that stage there is no honest number to publish afterwards.
Ledger
Every change we make becomes a record you can open.
Every change lands in a dated record as it happens — what was added, what was stopped, what was rewritten and what it cost. Writing this page afterwards was reading a file, not reconstructing a memory.
What actually happens after the first call.
No mystery and no lock-in before you have seen anything. This is the sequence every account on this site went through.
- The call
Thirty to forty-five minutes, free
What you sell, who buys it, and what one customer is worth to you. No deck. You leave with a real number for your situation rather than a range.
- Week 0
The audit
We open your account — or your competitors' ground, if you do not have one yet — and write down every leak we can find. That list is yours whether or not you work with us.
- Week 1
The build
Everything the account needs before it can spend a dollar: what it will bid on, what it must never pay for, the ad copy, the assets, the landing pages and the tracking. A second person checks all of it before anything is live.
- Day one
You press go
Campaigns are created paused, every time, so you can read the whole build first. You activate when you are ready, not when we are.
- Days 1–14
The clean
The busiest fortnight your account will ever have. Search terms read daily, waste negated, early winners promoted, ad copy iterated against what is actually being served.
- From there
Rhythm
Weekly optimisation, reporting on a fixed cadence whether the news is good or bad, and a proper conversation each quarter about where the next block of budget should go.
Before you ask us anything
Here is what everybody asks first.
The questions this raises.
How the results were measured and how the approach could apply to plumbing businesses.
The first call is free and there is no deck.
Book a callCan SoudCoh run Google Ads for leak detection?
Yes. Aussie Leak Detect is a specialist service case study, recording 6.8× won-job revenue relative to Google Ads spend and $47.28 per Google-attributed call or form enquiry in the selected window.
Does 6.8× return mean net profit?
Recorded won-job revenue is attributed to Google Ads enquiries acquired within the matched measurement window. It is recorded job value, not a statement of cash collected, net profit or margin. The result also excludes agency fees and service-delivery costs.
How are the phone and form enquiries counted?
Spend and enquiries use the same measurement window and account timezone. Cost per enquiry includes Google-attributed phone-call and form events recorded in SoudCoh.app; linked CRM call duplicates and hidden spam are excluded. Repeat calls can remain separate enquiries, so this is not a count of unique customers or booked jobs.
Are the figures in this Aussie Leak Detect case study real?
Campaign figures come from the advertising account and, where stated, SoudCoh.app enquiry and won-job records. Website studies document the delivered design separately. Each study explains what its result measures; ask us about the source behind a figure on your first call.
How were these numbers measured, and over what window?
The headline figure covers Selected measured result, and every other figure on the page is printed beside the period it belongs to. Results describe selected measurement windows, with exact trading dates kept private. The study identifies whether it measures advertising conversions, tracked call/form enquiries or recorded won-job revenue. Tracked calls can include repeat enquiries; they are not automatically unique people or booked jobs.
Would this work for plumbing businesses like mine?
We cannot promise you the same numbers, and nobody honestly can. What this page tells you is what was achievable in that market, at that budget, for that service. Your competition, your service area, your margins and what one customer is worth to you all move the answer. On the first call we build the picture from your figures rather than someone else's, and if the honest answer is that this channel is wrong for you right now, we will say so.
Why does this study show a result but not a starting point?
Because in most of these engagements there was nothing reliable to start from. A brand-new advertising account has no history, and a business that was tracking enquiries on paper or in a spreadsheet has no comparable figure either. Where a real before-number exists we print it next to the after-number, so you can see the movement rather than take our word for it. Where it does not, we print the result on its own. Back-solving a starting point from a percentage would make the page look better and mean less.
Would my business get the same result?
We cannot tell you that, and nobody honestly can. What this page tells you is what was achievable in that market, at that budget, with that service. Your competition, your service area, your margins and what a customer is worth to you all move the answer. On the first call we build the picture from your numbers rather than from someone else's, and if the honest answer is that this channel is wrong for you right now, we will say so.
More accounts, same discipline.
Studies from the same kind of work, so you can see how the pattern holds across different businesses.
Plumbing
Plumbing leads Adelaide: 46 enquiries in a 12-day period
Plumb SA generated 46 plumbing enquiries at $71.91 per lead across greater Adelaide in 2026, from just 12 days of spend.
Read case study
Cleaning
Carpet cleaning Central Coast: 37 leads at $40.69
A Plus Carpet Cleaning took 37 carpet cleaning enquiries at $40.69 per lead across the Central Coast in a 31-day period in 2026, at a 22.7% conversion rate.
Read case study
Cleaning
End of lease cleaning Sydney: lead cost down 26.51%
End of lease cleaning leads in Sydney: cost per lead fell from $41.84 in one measured period in 2026 to $30.75 over the first three days of the next.
Read case study
More plumbing businesses we have published.
One account proves very little on its own. The closest neighbour to this one is Sydney plumbing leads: 80 enquiries at $110.72 for Eagle Plumbing; its window is a 26-day period in 2026. The rest of the trade is below, with what each one is known for and how long that figure covers.
- Sydney plumbing leads: 80 enquiries at $110.72 for Eagle Plumbing13.36%of clicks became enquiries — a 26-day period in 2026
- Melbourne plumbing leads at $74.42 — a 10-day period$74.42cost per plumbing enquiry — a 10-day period in 2026
- Sydney plumbing: 84 enquiries in a 23-day period$140.84cost per plumbing enquiry — a 23-day period in 2026
The work that produced this.
Explore the services behind this engagement, alongside our work for plumbing businesses.
- Plumbing accounts, written up for plumbersWhat a plumbing business should expect a lead to cost, where the enquiries come from, and which of them are worth answering at 2am.
- Being visible when a pipe burstsBlocked drains and burst pipes are searched on a phone, urgently, by suburb. A large share of those searches are answered before any ad is seen.
- Turning a ringing phone into a booked jobPlumbing produces call volume easily. What it produces less easily is a booked job at a price that covers the truck.
The briefing behind the work.
The case study records what happened. These explain the channel, measurement or operating decisions behind the result.
Why the primary and secondary categories must match the work a business actually wants. That case is argued in Google Business Profile categories as a silent rank constraint.
The profile and service-area rules for the mobile businesses represented throughout this library. The other half of it is set out in Ranking a service-area business without publishing a storefront.
The work behind this one is written up in full under plumbing accounts, written up for plumbers, and the operating sequence behind every study on this site sets out the sequence in order.
Want results like this?
Thirty minutes on your numbers, and a written list of what we would change first. Yours to keep either way.
A real conversation and a written list of opportunities.