One of the most expensive Google Ads mistakes has nothing to do with bids or keywords. It is sending every click to the homepage. Imagine someone searches "emergency AC repair Austin", sees an ad promising same-day repair, taps it, and lands on a page about installation, maintenance contracts, commercial HVAC and the company's history. They have to hunt for the thing they were just promised. Many will not bother, and you paid for the click anyway.
A Google Ads landing page has one job: continue the conversation the ad started and make the next step obvious. Below are the mistakes that most often get in the way, and how to fix each one.
Why the landing page changes what you pay
Google does not rank ads on your bid alone. Its help page on how Ad Rank is determined lists ad and landing page quality among the factors, including how relevant and useful the page is, whether it matches what people expect after clicking the ad, and how easy it is to navigate. Ad Rank decides whether your ad shows at all and where.
You can see a rough signal of this in the Quality Score columns, which rate expected click-through rate, ad relevance and landing page experience for each keyword. Google describes Quality Score as a diagnostic tool, not an input to the auction, so treat it as a hint about where to look rather than a number to chase.
Then there is the plainer cost. Every visitor who leaves without calling or filling in the form is a click you paid for and got nothing from. Put numbers on it. Say an AC repair company spends $3,000 a month at an average of $6 per click, which buys about 500 clicks. If the homepage turns 2.5 percent of those visitors into calls or form fills, that is 12 or 13 leads at roughly $240 each. A focused repair page that converts 6 percent would bring about 30 leads from the same spend, at about $100 each. The figures are illustrative, but the arithmetic explains why landing page work often pays back sooner than any change to bids.
Mistake 1: A page that does not match the ad
Match the page to the promise. If the ad says "Same-day AC repair", the page headline should say the same thing, the first screen should show how to book a same-day visit, and the phone number should be visible without scrolling. If you run separate ad groups for repair, installation and servicing, each deserves its own page. That sounds like a lot of pages. In practice it is usually one template with different headlines, photos and form defaults.
A quick test: look only at the landing page on your phone for five seconds, then write down what you think it offers. If your answer does not match the ad, your visitors' answer will not either.
Mistake 2: A page that is slow on a phone
Check the device report in your account. For many local service businesses, a large share of clicks comes from phones, often on mobile data. A landing page with a slider, a background video and half a dozen tracking scripts can look fine on an office monitor and take several seconds to appear on a phone. Those seconds are when people tap back.
Keep landing pages lighter than the rest of the site: one compressed hero image, no autoplay video, only the scripts you actually use. Our guide to why websites load slowly and how Core Web Vitals measure it explains which numbers matter and where to find them.
Mistake 3: A form that asks too much, or quietly fails
Every extra field is another reason to stop. For a first inquiry, a name, a phone number or email, and one qualifying question (the service needed, a ZIP code, a preferred time) is usually enough. Save the rest for the call.
Then use the thank-you page properly. Tell people when you will call and from which number, so they actually pick up. It is also the cleanest place to record the conversion, which matters for the next mistake.
The worse version is a form that looks fine and does not work: submissions going to an old email address, a spam filter swallowing them, or a validation error that only shows up on one browser. Submit your own form from a phone at least once a month and after every site update. It takes a minute, and without it a broken form can go unnoticed for weeks while the ads keep spending.
Mistake 4: Tracking that counts the wrong thing
If your conversion fires on every view of a thank-you page, reloads and bookmarked visits count as leads. If it fires on the button click rather than a successful submission, failed submissions count too. Either way, automated bidding optimizes toward a number that is not real, and you pay more for less.
Check three things. The conversion fires once per genuine lead. Calls from the ad and calls from the page are tracked separately from form fills. And someone compares the Google Ads lead count with what actually arrived in the inbox or sales CRM each week. Once that works, go a step further: enhanced conversions for leads let you report back which leads became customers, matched using hashed details such as an email address, so bidding learns which searches bring real sales and not just form fills.
Mistake 5: Hiding who you are
People are about to hand a stranger their phone number. Make that feel safe. Show your business name, a real address or service area, your phone number, any license or registration your trade requires, photos of your own team and work instead of stock images, and a plain explanation of what happens after someone submits the form. If you can give price guidance, even a range, do it. It filters out people who were never going to buy and reassures the ones who are.
Mistake 6: A page that breaks Google's destination rules
Some landing page problems cost more than conversions; they get ads disapproved. Google's destination requirements policy covers pages that do not work or return errors to Google's crawler, pages that cannot be crawled, pages that are not accessible in the location you target, a display URL domain that does not match where people land, and destinations that are unnecessarily difficult or frustrating to navigate. The everyday causes tend to be mundane:
- A firewall or security plugin that blocks Google's ad crawler, or visitors from the country you are targeting.
- A redirect from the ad's URL to a different domain, such as a booking tool hosted elsewhere.
- Pop-ups that cover the page and are hard to close on a small screen.
- A landing page removed or renamed during a site update while ads still point to it.
A website maintenance routine that checks every active ad URL after each update will catch most of these before Google does.
A 20-minute Google Ads landing page audit
Pick your highest-spending campaign and do this on your phone, not your laptop:
- Open the ad's final URL over mobile data rather than office Wi-Fi.
- Count the seconds until the headline and main image appear.
- Read the headline. Does it repeat the promise in the ad?
- Without scrolling, can you see how to call or book?
- Submit the form with a clearly marked test entry. Did it arrive, and did the conversion register in Google Ads?
- Tap the phone number. Does it open the dialer?
- Look for your business name, location and a concrete reason to trust you.
If any step fails, fix it before you touch bids or budgets. A better bid strategy on a broken page only buys more of the same wasted clicks.
Landing pages often end up owned by nobody. The ads person assumes the web developer handles them, and the developer assumes the ads are someone else's concern. Give one person responsibility for each campaign's Google Ads landing pages, with a short checklist to run whenever the ads or the site change.
If the audit turns up more than you have time to fix, our Google Ads team can review your campaigns and landing pages together and put the fixes in the order we would tackle them.
