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    Proof
    Impress Blinds — cost per enquiry down 62.63%, $23.6 to $8.82SLS Solicitors — cost per enquiry down 58.48%, $84.64 to $35.14FixCare Property — cost per enquiry down 56.36%, $35.24 to $15.38Rubbish Removal WA — cost per enquiry down 53.18%, $71.02 to $33.25Floral Cakery — cost per enquiry down 49.82%, $13.83 to $6.94ILLUMINATE Laser Emporium — cost per enquiry down 48.54%, $138.65 to $71.35Aussie Plumbing — cost per enquiry down 41.96%, $117.75 to $68.34Sydney Fence Painting — cost per enquiry down 33.68%, $136.62 to $90.61Alliance Plumbing — cost per enquiry down 29.6%, $81.26 to $57.21Gridless Build Solutions — cost per enquiry down 29.16%, $78.16 to $55.37FacilityWorx — cost per enquiry down 23.62%, $157.13 to $120.01Cornerstone Roofing — cost per enquiry down 20.47%, $41.71 to $33.17A council finance platform — 194 of 194 requirements metA council finance build — 14 weeks to UAT, −34% 10-yr costA cultural institution — $634K of $750K kept workingA council platform — $470,106 built vs $503,262 SaaSA federal agency — n=5,000 prevalence survey at ±1.4%A civic mural — 36 concepts for a 71m × 9m wallA regional shire — 32-page visitor guide, 3 weeks earlyA shire council — one platform retiring 8 of 9 vendorsA pressure washing business — 138 jobs at A$20.43 eachA pressure washing business — 21.20% conversion rateA carpet cleaner — 53 jobs in 15 days at A$24.92 eachA roofing company — 68 quote requests in 35 daysA CCTV installer — 39 qualified leads in 15 daysA fence painter — 36 jobs in 24 days, quotes by day 3A maintenance business — live in 8 weeks, 3 stacks gone41 numbered clauses, published in full5.0 across every Google review$120M+ in media under management250+ active engagements across five countries

    Remarketing Most people leave. Some come back.

    Almost nobody buys on the first visit. Remarketing is the second conversation with the people who nearly did — held with a frequency cap, an exclusion list and a message they have not already ignored. Built on your own data, not on a cookie that half the internet has stopped honouring.

    68 quote requests in 35 days, with retargeting credited for a 20–30% lift in return · Cornerstone Roofing, a roof restoration business in Melbourne · Full breakdown in the case study

    Inside the account

    Seven ways remarketing
    turns into wallpaper.

    None of these are exotic. They are what we find in almost every remarketing setup we inherit, and the last one is the reason this channel gets away with it for so long.

    • One ad, on repeat, for ninety days

      No frequency cap set, so the same banner follows the same person forty times. That is not persistence, it is the point where a business starts to look desperate to somebody who was only browsing.

    • Still advertising to people who already bought

      Converters left in the audience because nobody built an exclusion list. You pay to win a customer, then pay again to show them an ad for the thing they have already paid you for.

    • One list, called All Visitors

      Somebody who bounced off the homepage in four seconds sits in the same audience as somebody who half-filled your quote form. They get the same ad, at the same bid, and the bid is wrong for both.

    • A tag that quietly stopped firing

      The site got rebuilt, the tag did not make it onto the new templates, and the lists drained over sixty days. Spend kept going out. Nobody noticed, because a shrinking audience does not raise an alarm.

    • Consent collected but never passed on

      A cookie banner on the site and no consent signal reaching Google. In the UK that means visitors are simply never added to a list, and the campaign underperforms for a reason no report on the page will show you.

    • The follow-up repeats the ad that already failed

      They saw the offer, they did not take it. Showing them the identical headline a second time asks them to change their mind with no new information. A follow-up has to say something the first ad did not.

    • Taking credit for the customer who was coming back anyway

      Remarketing reports beautifully, because it advertises to people who already know you. Some of those returns are real and some would have happened without a cent of spend. If nobody checks, the reporting flatters everyone.

    The rules, actual size

    This runs on permission now, not on cookies.

    Remarketing is the channel people are most uneasy about, and the one most agency pages are vaguest on. So here is the honest version: what a list can be, how big it has to get, and what a visitor has to agree to first.

    • 540

      days a list may last

      The platform ceiling on how long somebody can stay in an audience. Most of the lists we build are far shorter than that on purpose.

    • 1,000

      active users to serve on Search

      A list has to reach a thousand before it will run on Search or YouTube. Under that, the campaign sits there spending nothing.

    • 100

      active users to serve on Display

      Display's floor is lower, which is why smaller sites start there and grow into Search rather than the other way around.

    • 30

      day window for “active”

      Google counts list size on the last thirty days. A quiet month can switch a campaign off by itself, without anybody changing a setting.

    • 2

      extra consent signals since v2

      Consent Mode v2 added ad user data and ad personalisation on top of ad storage. Without them, UK visitors do not enter your lists.

    • 0

      third-party cookies in Safari

      Blocked by default since 2020, and Firefox blocks tracking cookies too. Anything built on them was always going to run out of road.

    Platform limits and browser defaults, not performance figures. Google sets the durations and the audience floors; Apple and Mozilla set the cookie behaviour.

    So we build on what you own, and nothing that leaves.

    Your own tag on your own domain. Your own customer list, hashed in the browser before it ever reaches Google. Conversions reported server to server where the platform allows it. None of that depends on a third-party cookie, so none of it breaks the next time a browser changes its mind.

    And to be exact about what travels between the accounts we run: our learnings, never your data. De-identified structure only — audience patterns that work, exclusion rules, policy guards. No visitor lists, no conversion data, no bids, no creative. Nothing that is yours leaves your account.

    One correction we would rather make here than let you find later: Google retired Similar Audiences across every campaign type in August 2023. Any agency still selling them is selling something that no longer exists. Customer Match feeding optimised targeting is what took their place.

    Accounts we run

    Cornerstone Roofing · 35-day period

    20–30%

    Lift in return, credited to retargeting

    68 quote requests in the same window

    NexData · 15-day period

    39

    Qualified leads, security and CCTV

    Commercial and residential split · same-day lead alerts

    Pink Flamingo · 41-day period

    A$20.43

    Cost per job booked

    138 jobs from A$2,819.92 of ad spend

    Figures are from live client accounts and are dated in each case study. They are whole-account outcomes — remarketing is one part of what produced them, not the sole cause — and they are not a forecast for your business.

    Eleven things happen on a remarketing account. Here they are, in order.

    This is the part most agency pages keep vague, and it is the only part that decides whether the money works. So it is written down — including the last one, which is the one that keeps this channel honest.

    1. Fix the tag before anything else

      The Google tag on every template, including the thank-you page, tested page by page rather than assumed. There is no audience without it, and a tag that half works is the most common thing we find on takeover.

    2. Wire consent so the answer actually arrives

      Your banner has to hand Google a real signal, not just set its own cookie. We connect Consent Mode properly, then check that a visitor who declines is genuinely excluded and a visitor who accepts genuinely appears.

    3. Build lists from behaviour, not from everybody

      Quote page viewed. Pricing read. Three pages deep. Form started and abandoned. Past customer. Each of those is a different person at a different moment, so each gets its own list, its own message and its own bid.

    4. Set a duration that matches the decision

      Somebody decides on a blocked drain in an hour, so a seven-day window is generous. A roof, a security system or a commercial contract takes weeks, so we run those lists to ninety days or longer. One duration for the whole account is a guess.

    5. Exclude everyone who already said yes

      Converters, current customers, existing enquiries and job applicants go on an exclusion audience attached to every campaign. It costs nothing to do and it is the single most common thing missing from the accounts we inherit.

    6. Cap how often one person sees you

      A set number of impressions per person per day, per campaign, reviewed against what the frequency report actually shows. The aim is to still be there when they decide, not to be there every time they blink.

    7. Write the follow-up as a second conversation

      Different from the ad that brought them the first time. The thing they did not know yet — the warranty, the finance, the lead time, the fact you cover their suburb — rather than the same headline said louder.

    8. Bid differently when they search again

      Remarketing lists for search ads. When somebody who has already been on your site types the keyword again, that click is worth more than a stranger's, so we bid on it like it. Often the cheapest win in the whole account.

    9. Use a feed where you have one

      For online stores, dynamic remarketing puts the exact product back in front of the person who viewed it, with its image and its price. Cart abandoners get their own list. For service businesses we do the same thing with a services feed.

    10. Bring your own customer list

      Customer Match takes emails you already hold, hashed in your browser before they reach Google, so past customers can be reached or excluded. This is also what replaced Similar Audiences, which Google retired across all campaigns in August 2023.

    11. Check what it added, not what it claimed

      Remarketing sits closest to the sale, so attribution hands it the credit. We hold audiences out, compare periods, and read the result against total enquiries — then tell you where the channel added something and where it was collecting applause.

    How an engagement runs

    The first ninety days, honestly.

    1. Week 0

      The audit, and a look at your tag

      Thirty to forty-five minutes on what you sell and what a customer is worth, then we open the site and check whether the tag, the consent banner and the conversions are doing what somebody told you they were doing.

    2. Week 1

      Tagging, consent and the lists

      We deploy and test the tag, connect the consent signals, define the audiences with their durations and exclusions, and write the ad creative per segment. A second strategist reads all of it before anything is switched on.

    3. Weeks 1–3

      The lists fill, and we say so

      This is the honest part. You cannot advertise to visitors who have not visited yet, so a new audience takes days or weeks to reach the size Google will serve at. We tell you that at the start rather than at the first report.

    4. Day one

      You press go

      We build every campaign paused, so you read the audiences, the durations, the exclusions and the ads before a dollar moves. You switch it on when you are ready, not when we are.

    5. Weeks 4–8

      The segments separate

      By now we have enough data to see which audience is worth what. Quote abandoners usually earn a bigger bid than homepage bouncers. We shorten or extend the durations, tighten the frequency caps, and rewrite the ads that nobody responded to get rewritten.

    6. From there

      Rhythm

      Weekly optimisation, reporting on a fixed cadence whether the news is good or bad, a hold-out check when the numbers look too good, and a proper conversation each quarter about where the next block of budget should go.

    We build every campaign paused, every time. You read the audiences, the durations and the exclusions before a dollar moves — that is a rule we hold ourselves to, not a favour.

    SoudCoh Compound™

    Remarketing leans on two of the six stages harder than any other channel.

    Compound is how our team works on any account — six stages every change passes through. On this channel, measurement and the written record are not admin. They are the whole basis of it.

    • Meter

      If it can't be measured, it doesn't get bought.

      Remarketing is the channel where this stage is not optional. No tag, no audience. No consent signal, no list. And no honest conversion tracking means a channel that sits next to the sale gets handed credit it may not have earned.

    • Ledger

      Every change we make becomes a record you can open.

      We write down and date which lists exist, how long each one holds somebody, who we excluded and when that changed. It is what lets you answer a customer who asks why they are seeing your ads, without anybody having to guess.

    FAQ

    Remarketing, answered.

    Cost, timing, contracts, who owns the account, reporting — and the privacy questions this channel is right to attract.

    The first call is free and there is no deck.

    Talk to us about your account

    A small piece of code on your website — the Google tag — notes that a browser visited a particular page, and adds it to an audience. Later, when that same browser is on a site that carries Google ads, or on YouTube, or searching again, your ad can be shown to it. Nobody at our end sees a name, an email or a phone number in that process. It is a list of anonymous browsers that met a rule you set, and every person on it can be removed by clearing their cookies or turning off ad personalisation in their Google account.

    Two separate numbers. Your ad spend goes to Google, and remarketing is usually a smaller line than Search because the audience is smaller by definition — you are only paying to reach people who already came. Our management fee is separate and scales with the work. Across paid channels the smallest companies we work with invest a minimum of A$3,000 a month, and our largest clients run multiple eight figures a month. The first call is free, and you get a real number for your situation before you commit to anything.

    Slower to start than Search, and for a structural reason. A list has to reach 1,000 active users before it will serve on Search or YouTube, and 100 on Display, counted over the last 30 days. If your site gets modest traffic, that takes days or weeks to build, and there is genuinely nothing to show you in the meantime. Once the lists are serving, returning visitors tend to convert sooner than first-timers because the decision is already half made. We would rather tell you about the waiting period at the start than explain it at the first report.

    No long-term lock-in. We would rather keep the work because it is producing than because a contract says you have to stay. What we do ask for is enough runway to be fair to the channel — remarketing judged in its first fortnight is being judged while the audiences are still filling up. The terms are put in front of you in plain English before anything is signed.

    We own and run the account, because the build is proprietary methodology refined across 250+ engagements — audience architecture, exclusion libraries, bidding structure and conversion tracking. You get full-visibility reporting on performance and spend at all times, and on long-term marketing agreements ownership and handover options are available to discuss. Your customer data is a separate question with a simpler answer: any list you give us is yours, it is used on your account only, and it is deleted on request.

    We tell you, in the report, in plain English, and we change what we are doing. Usually the fix is upstream — not enough traffic to build a list worth having, or a landing page that was not going to convert anybody the second time either. If the honest answer is that your site does not yet get enough visitors for remarketing to be worth running, we will say so and put the budget where it does more. What we will not do is let it tick over quietly because it reports well.

    We report on a fixed cadence, good news or bad. Every report says what you spent, what it produced, what we changed and why, and what we are doing next — written in the language you use about your own business rather than platform jargon. On this channel we also report frequency, so you can see how often a person is being shown your ad, and we flag when returning-visitor conversions look like they were coming anyway. You can see live performance and spend for yourself at any time.

    It is when it is done badly, and most people's experience of it is the bad version. Three things fix it. A frequency cap, so nobody sees the same ad forty times. Segmentation, so what you see relates to what you actually looked at. And exclusions, so the ads stop once you have bought or enquired. We also keep durations short where the decision is short — following somebody for eighteen months because a platform allows it is not persistence, it is a setting nobody bothered to change.

    Safari has blocked third-party cookies by default since 2020 and Firefox blocks tracking cookies too, so on a large share of traffic they already do nothing. Chrome has changed its position on them more than once, which is exactly why we do not build on them. What we build on instead is your own first-party tag on your own domain, your own customer lists, and conversion measurement that reports server to server where it can. Those work regardless of what any browser decides next.

    In the UK we run Consent Mode v2, which means a visitor who declines is not added to any audience and is not remarketed to — no exceptions, no workaround. In Australia the rules are different: there is no cookie-consent regime equivalent to the UK's, but the Privacy Act still governs personal information, and Google's own policies require a privacy policy that discloses your use of remarketing. We will set the mechanics up correctly and tell you what needs disclosing. The wording of your privacy policy is for your lawyer to sign off, not us.

    Our learnings, never your data. If you give us an email list for Customer Match, it is hashed in the browser before it reaches Google, it is used on your account only, and it is deleted when you ask. What travels between the accounts we run is de-identified structure — audience patterns that work, exclusion rules, policy guards — never your visitors, your conversion data, your bids or your creative. What you get on day one is everything those rules have already learned, adapted to your business rather than recycled from anyone else's.

    It tailors the ad to the exact thing somebody looked at. For an online store that means the product they viewed, with its image and its price, and a separate audience for people who left something in the cart. For a service business we do the same with a services feed, so somebody who read your commercial page does not get the residential ad. It needs a feed and correct page tagging to work, which is part of the build rather than an extra.

    As long as the decision takes, and no longer. For emergency and short-consideration services, 7 to 30 days covers it. For business-to-business, finance, property or anything high-value, 30 to 90 days is more realistic. The platform allows up to 540 days, which is almost never the right answer. We set different durations for different segments — a cart abandoner and a blog reader are not on the same clock — and we shorten them when the data says the window closed earlier than we assumed.

    Yes, and they behave differently. On Search it is called remarketing lists for search ads: when a past visitor types your keyword again, you can bid more for that click than for a stranger's, which is often the cheapest win in the account. On YouTube the same audiences see video instead of a banner, which suits anything that needs explaining. Display, Search and YouTube together is the usual shape, with a frequency cap set across all of them rather than per campaign.

    Get the tracking audit

    We check whether your tag fires on every page, whether your consent banner actually reaches Google, and which audiences your site could be building today and is not. Written down, and yours to keep either way.

    No pitch deck. No upsell. A real conversation and a written list of leaks.