What is remarketing on Google and how do I re-engage people who visited my website?

Q: What is remarketing on Google and how do I re-engage people who visited my website?

Google Remarketing shows ads specifically to people who previously visited your website but didn't book or submit a form. Because these visitors already know your business, they convert at 70% higher rates than cold traffic. Display remarketing averages $0.50–$2 CPM — making it one of the most cost-efficient ways to recapture warm leads.

Why This Matters in 2027 Remarketed users are 70% more likely to convert than cold traffic. Display remarketing CPM averages $0.50–$2 — one of the cheapest ways to maintain visibility with people already interested in your service. Most local business owners focus all ad spend on reaching new people while ignoring the warmer audience they've already paid to attract.

When someone visits your plumbing service page and leaves without calling, they're not gone. They're a warm lead who knows who you are, knows what you offer, and hasn't made a decision yet. Remarketing lets you follow that person with ads across Google's network — keeping your name in front of them while they compare options and make their choice.

This is a fundamentally different type of advertising from cold prospecting. You're not trying to introduce yourself — you're reminding someone who already found you that you're still there, still ready, and still the right choice.

How Google remarketing works

When someone visits your website, Google's tag (a snippet of code on your site) records that visit and adds that person to an audience list. From that point forward, you can target them with ads across the Google Display Network — millions of websites, apps, and YouTube that have Google ads running on them. The visitor goes to check the news, watch a YouTube video, browse a recipe site — and your ad appears.

The setup requirement is simple: install the Google Tag (formerly called the Global Site Tag or gtag.js) on every page of your website. This is the same tag used for Google Ads conversion tracking. If you already have Google Analytics 4 on your site, you're partway there — you just need to link your GA4 property to your Google Ads account to use GA4 audiences for remarketing.

Audience segments to create first

Not all website visitors are equal. Build these four audience lists in order of priority:

Contact page visitors who didn't submit: This is your highest-intent audience. They went to your contact page — they were ready to reach out — and something stopped them. Price concern? They got distracted? A competing ad appeared? These people are the closest to hiring you. Run a specific ad to this list with urgency or a concrete offer.
Service page visitors who didn't visit contact page: They looked at what you do, but didn't take the next step. Show them proof — a specific review, a before/after image, a credential. Build confidence that you're the right choice.
All website visitors (30-day window): The broad audience. Good for general brand visibility at very low CPM — keeping your name in front of everyone who's touched your site recently.
YouTube video viewers (if applicable): Anyone who's watched 25%+ of one of your videos is warm. Add them to a remarketing list and follow up with a direct offer.

Audience lists need a minimum size before you can use them — Display audiences need at least 100 users, Search remarketing (RLSA) needs at least 1,000 users. This means you need to install your tag now and wait for lists to build, even if you don't run remarketing campaigns immediately.

Two types of Google remarketing campaigns

Display Remarketing: Banner ads that follow your past visitors around Google's network. Cost: $0.50–$2 CPM (per thousand impressions). Best for: maintaining visibility during the consideration period, running at very low cost to warm leads. Your creative should show your strongest proof — a specific review quote, before/after image, or a compelling specific offer.

Search Remarketing (RLSA — Remarketing Lists for Search Ads): When a past visitor later searches your keywords on Google, you can bid higher — because you know they've already been to your site and they're searching again. They're in active buying mode. Increase your bids by 20–50% for these audiences to ensure you show up in position 1 when they search.

Pro Tip Create a separate ad specifically for "contact page visitors who didn't convert" — this audience gets a dedicated message. Skip the intro. They already know who you are. Give them a specific reason to act now: "We have 3 openings this week," "First-time customers get 10% off," or simply a direct "Ready when you are — here's our number." This audience typically converts at 3–5x the rate of your general site visitors.

Remarketing creative that works for local services

Forget generic "Visit Our Website" banner ads. Remarketing creative for local service businesses should do one thing: provide proof. Your past visitors have seen your homepage and maybe a service page. They know what you offer. What they're evaluating is whether to trust you over competitors. Give them ammunition to choose you.

What works: a screenshot of your best Google review with stars visible, a before/after image with a brief outcome description, a specific credential ("18 years licensed, 400+ jobs in Eugene"), or a time-bound offer ("Book this week — scheduling fills fast in our area"). What doesn't work: your logo on a blue background with "Call Us Today."

Duration: how long to run remarketing

Set your audience window to 30 days. Most local service decisions happen within 2–3 weeks of first contact — a homeowner discovers a problem, researches options for a week, gets a couple of estimates, decides. By day 30, they've either hired someone or the decision has been deprioritized. Following someone with ads for 90 days on a $300 service decision wastes money on people who've already moved on.

The exception: high-value, longer-consideration projects. A $15,000 kitchen renovation has a longer consideration cycle. Extend to 60 days for premium service businesses.

Key Takeaways

Remarketing targets people who already visited your site — they convert at 70% higher rates than cold traffic because they already know who you are.
Display remarketing costs $0.50–$2 CPM — extremely cheap for staying visible to warm leads during their decision window.
Install your Google Tag immediately so audience lists start building — they need 100+ users before you can run campaigns.
Prioritize contact page visitors (highest intent) and service page visitors who didn't convert as your first two remarketing audiences.
Use your strongest proof in remarketing creative — reviews, before/afters, and specific credentials — not generic "call us" copy.