Most service businesses that come to us have the same story. They hired an agency, paid a monthly retainer, received reports full of numbers that didn’t mean anything, and quietly watched their phone stop ringing. When they asked hard questions, the agency went quiet.
It’s a pattern that repeats itself constantly in the home services and professional services world. And it’s almost always avoidable — if you know what to look for before you sign anything.
Here’s what actually separates a good Google Ads agency from one that will burn your budget and disappear.
They Should Understand Your Industry, Not Just Google Ads
Google Ads for a plumber is a completely different game to Google Ads for an e-commerce brand. The keywords are different, the buying cycle is different, the conversion tracking is different, and the definition of a good result is different.
An agency that manages fashion brands and SaaS companies alongside your roofing business is not going to ask the right questions. They’ll optimise for what they know — clicks, impressions, cost per click — not for what matters to you, which is the phone ringing with someone who needs a job done today.
Before you hire anyone, ask them: what service businesses have you worked with, and what were the results? If they can’t give you specific industries and specific numbers, keep looking.
You Should Own Your Own Account
This is non-negotiable, and it’s the first thing to check.
Some agencies run your campaigns inside their own Google Ads manager account. This means all your campaign history, quality scores, conversion data, and audience lists belong to them — not you. If you leave, you start from zero.
Your Google Ads account should be set up in your name, on your email, with your billing. The agency gets access as a manager. The moment you stop working together, you revoke that access and keep everything.
If an agency pushes back on this, that tells you everything you need to know about how they view the relationship.
They Should Talk About Calls and Jobs, Not Clicks and Impressions
Clicks are easy to generate. Impressions are meaningless. Neither of those pay your bills.
A good agency talks about cost per call, cost per booked job, and which campaigns are generating your best customers. They should be able to tell you: for every pound or dollar you spent last month, here is what came back.
If your monthly report is full of graphs showing traffic going up but you can’t connect it to actual revenue, your agency is measuring the wrong things. Either they don’t know how to set up proper conversion tracking, or they’re showing you vanity metrics because the real numbers aren’t good.
Ask before you start: how will we track phone calls and form submissions back to specific campaigns? If they don’t have a clear answer, walk away.
They Should Diagnose Before They Build
Any agency worth working with will want to understand your business before touching your account.
What does a qualified job look like for you? What’s your service area — not the county, the actual postcodes or zip codes you can reach in a reasonable time? What’s your average job value? What happens after someone calls — do you answer, or does it go to voicemail?
The answers to these questions completely change how a campaign should be structured. An agency that skips this and goes straight to setup is going to make the same mistakes the last one did, just faster.
They Should Be Honest About What They Can and Can’t Guarantee
No agency can guarantee specific results. Anyone who does is either lying or about to disappear with your money.
What a good agency can guarantee is a structured approach, transparent reporting, and honest communication when something isn’t working. They should be able to tell you what they’ll do, why they’ll do it, and how they’ll know if it’s working.
The best agencies operate on short contracts — monthly rolling or three-month minimums — because they’re confident enough in their results that they don’t need to trap you. If an agency is pushing a six or twelve month contract upfront, ask yourself why they need that long to prove their value.
Red Flags to Watch For
Before you sign anything, check for these:
- They can’t show you results from similar businesses with real numbers. Testimonials that say “great to work with” without any metrics are not evidence of performance.
- They lead every conversation with your ad spend, not your strategy. More budget is not the answer to a poorly structured account.
- They send reports but don’t explain them. A good agency should be able to walk you through what happened last month in plain English in under ten minutes.
- They own your account. See above.
- They promise page one rankings or specific lead volumes. Google Ads results depend on your market, your offer, your website, and your sales process — not just the campaigns.
The Right Agency Feels Like a Partner, Not a Vendor
The difference between a good agency relationship and a bad one usually comes down to communication. Do they reach out when something changes, or do you have to chase them? Do they explain what they’re doing and why, or do they hide behind jargon? Do they tell you when something isn’t working, or do they just quietly adjust the reports?
You’re not account number 47 in a spreadsheet. You’re running a business that depends on its phone ringing. The agency managing your ads should feel that same urgency.
Thinking about switching agencies or starting Google Ads for the first time? Book a free 30-minute call. We’ll look at what you’re currently running, tell you honestly what we’d change, and whether we’re the right fit.