Two businesses bid on the same keyword. One shows a single line of text. The other shows that same line plus a phone number, four links to specific pages, a note about free shipping, and its star rating. Same keyword, same budget — but the second ad takes up twice the screen and gives a searcher four more reasons to click. That extra real estate comes from ad extensions, and they’re one of the most reliable ways to get more out of a search campaign without raising your bid.
What ad extensions are
Ad extensions are the additional pieces of information you can attach to a search ad — links, phone numbers, addresses, prices, promotions, and more — beyond the core headline and description. They expand your ad’s footprint on the results page and give people more ways to engage before they ever land on your site.
One naming note worth getting right, because it confuses people: Google renamed ad extensions to “assets” a few years back. You’ll still hear “extensions” everywhere in the industry, and Microsoft Advertising still uses the term, but inside the Google Ads interface you’ll now find them under “Assets.” Same feature, newer label. We use the terms interchangeably below the way most marketers still do.
Why they punch above their weight
Extensions do two things at once, and that combination is what makes them so valuable:
- They take up more space. A fully extended ad simply occupies more of the screen, pushing competitors down and commanding more attention.
- They feed Ad Rank. Google factors expected extension impact into the Ad Rank calculation that decides your position. Useful, relevant extensions can lift your ranking — which is why a competitor sometimes outranks you despite a lower bid.
From our agency experience, this second point is the one clients underestimate. They treat extensions as a finishing touch, when in practice they’re a lever on placement itself. And the cost math is friendly: there’s no extra charge to add extensions. If someone clicks a sitelink or a call button, you pay the same as you would for a click on the headline — you’re not paying extra for the larger ad.
The extensions worth knowing
You don’t need all of them on every campaign. The common ones, and when each earns its place:
- Sitelinks — extra links to specific pages (“Pricing,” “Contact,” “Women’s Shoes”). The workhorse extension; useful on nearly every account.
- Callouts — short, non-clickable phrases (“Free Shipping,” “24/7 Support,” “Family Owned”) that highlight selling points.
- Structured snippets — a labeled list of what you offer (“Brands: Nike, Adidas, Puma”), letting searchers preview your range.
- Call extensions — your phone number, tappable on mobile. When we run campaigns for service businesses and local clients, this is often the single most valuable extension because it shortens the path to a conversation.
- Location extensions — your address and a map pin, essential for any business that wants foot traffic.
- Price extensions — a row of products or services with prices, which also pre-qualifies clicks by setting expectations.
You can apply extensions at the account, campaign, or ad group level, so broad info lives at the account level while a specific promotion can be scoped to one campaign. Note that adding an extension doesn’t guarantee it shows — Google decides which ones to display based on the query, the device, and your Ad Rank.
How to use them well
What we consistently see is that the accounts getting the most from extensions follow a few habits:
- Add more than you think you need. Google won’t show all of them at once, but giving it more options means it can assemble the strongest possible ad for each search. Thin extension coverage caps your potential.
- Point sitelinks at genuinely different pages. Four sitelinks that all go to the homepage waste the format. Send each to a distinct, relevant destination.
- Keep call and location info accurate. A wrong number or stale address turns an asset into a liability and erodes trust at the worst moment.
- Match extensions to the campaign’s goal. Lead-gen leans on call extensions; e-commerce benefits from price and promotion extensions; local relies on location. Don’t bolt on every type reflexively.
Frequently asked questions
Do ad extensions cost extra?
No. Adding them is free, and a click on an extension — a sitelink, a call button — costs the same as a click on your headline. You get the larger ad at no premium.
Why aren’t my extensions showing?
Google chooses which extensions to display per search, based on the query, the device, and your Ad Rank. Lower-ranked ads show fewer extensions, and not every extension fits every result. Adding more options and improving relevance both help.
Are they called extensions or assets now?
In Google Ads they’re officially “assets” after a rename, though most marketers and Microsoft Advertising still say “extensions.” It’s the same feature either way.
Which extensions should I start with?
Sitelinks, callouts, and structured snippets apply to almost any business and are the sensible baseline. Add call and location extensions if phone calls or store visits matter to you, and price extensions if you sell defined products or services.
Related terms
- Google Ads — the primary platform where ad extensions (now assets) live and are managed.
- Click-Through Rate — the metric extensions are most reliably good at improving by giving searchers more to click.
- Ad Rank — the auction calculation that extensions feed into, influencing your ad’s position.
- Ad Group — one of the levels (alongside account and campaign) where you can apply extensions.
- Online Presence — the broader visibility that a fuller, more prominent ad helps build.
- Quality Score — the relevance measure that, together with extensions, shapes how well your ads perform and rank.
