Dynamic Search Ads Explained: A Secret Research Tool for Builders

What if Google could skip the keyword research entirely, read your website, and then run ads against what it finds, all on its own? Sounds a bit like cheating, right? Well, that’s pretty much what Google Dynamic Search Ads do. And for builders, roofers, and renovators trying to keep the crew busy without becoming part-time marketers, this little feature is worth knowing about.

Let me explain how it works, and more importantly, whether you should bother using it at all.

So what are Dynamic Search Ads, really?

Dynamic Search campaigns are an alternative format sitting inside the regular Google search campaign type. But the way you set them up flips everything on its head.

Here’s the normal way most contractors run search ads. You do the keyword research by hand. You tell Google, “These are the keywords I want my ads to show up for.” Then you write your headlines, your descriptions, you hand all of that over, and off you go. You’re in the driver’s seat the whole time.

Dynamic Search Ads work the other way around. You give Google your website and let it scan your content. Based on what it reads, Google decides which keywords to run ads for. Then comes the clever bit. It assembles the headline and description on the fly, built around your actual landing pages.

So say someone searches for a kitchen remodel. Google puts together an ad about kitchen remodeling and sends that person straight to your kitchen renovation page. No manual writing. No guessing. It just matches the searcher to the right corner of your site.

Your website has to pull its weight

Here’s the catch, and it’s a big one. This only works if your website is well-structured.

You need separate landing pages for different services. A page for roofing repairs. A page for re-cladding. A page for bathroom renos. And the content on those pages needs to be solid enough for Google to read, understand, and pull keywords from. Thin, vague, one-page-does-everything sites? Google’s going to struggle, and your campaign will struggle right along with it.

Think of it like sending an apprentice to grab a tool. If your shed is organised, labelled, everything in its place, he’s back in thirty seconds. If it’s a pile of gear in the corner, good luck. Same idea here.

The bit that genuinely impresses me

Now here’s where Dynamic Search Ads earn their keep. They surface keywords you would never have thought of in a million years.

Long-tail searches that just don’t show up in the keyword planner. The odd phrases your customers actually type, which are often nothing like how you’d type them yourself. Little variations, regional slang, the strange way real people word things when they’re searching for help with a leaky roof at 11pm. All those small deviations you simply never considered.

Honestly, they never fail to surprise me. And what you get back isn’t just ad results. It’s a window into how your customers think and search. That’s research gold, and it’s hard to find anywhere else.

Should you actually use them?

Well, it depends. There are two situations where I reach for Dynamic Search campaigns.

The first is when I’m stuck on a brand-new account. I’ve been running things for a few weeks, the lead flow isn’t where I want it, and I start wondering: am I even targeting the right keywords? That’s the perfect moment to switch on a dynamic campaign, let Google take the wheel, and hand me back a big list of search terms it showed ads for. The more conversions those terms bring in, the more I can fold the winners back into my main search campaign. As a research tool, it’s tough to beat.

The second scenario is the scaling phase. Maybe I’ve slowly pushed the budget up, built out a proper keyword list, set up a bunch of campaigns and ad groups, and now I just want something fresh. New angles. New things to bid on. New places to expand into. Dynamic Search Ads are brilliant for sniffing out those opportunities.

One rule to keep in mind

This part matters, so don’t skim it. Dynamic Search Ads are not a set-and-forget thing, and they’re definitely not your main campaign type.

The way I look at it: your standard search ads are the foundation, and your dynamic search ads are the research tool. The foundation holds the house up. The research tool tells you where to build next. Mix those two roles up and you’ll end up disappointed.

So, is this something you’d give a go on your account? If your website’s tidy and your service pages are sorted, it’s well worth testing. If they’re not, that’s probably the first job on the list.

Either way, if you’d like a hand setting up Dynamic Search Ads or just want a fresh set of eyes on your Google Ads account, the Bluelight team here in Auckland is happy to take a look. We spend our days keeping builders, roofers, and renovators busy with quality leads, and we’d love to do the same for you.