How to choose an SEO agency: 10 questions to ask before you hire

Almost every agency claims it does SEO well. That claim on its own tells you nothing. What tells you something is how specific the answers get when you ask what they would audit first, how they measure results, and what happens if it does not work.

How do you choose an SEO agency?

The fastest way to choose an SEO agency is to ask about their audit process, how they measure results beyond rankings, how they handle AI search visibility, what pricing actually includes, and what the contract says if things do not work out, all before you sign anything. Those five areas separate agencies that can back up their pitch with a real plan from ones selling a generic package with your industry’s name swapped in.

This guide breaks that down into ten specific questions. Ask them on a discovery call, or put them in an email during the proposal stage.

The ten questions at a glance

• What will they audit first, and what will they actually show you?
• How do they measure results: rankings, traffic, or revenue?
• Do they treat AI search visibility (GEO/AEO) as core strategy or a bolt-on?
• Who exactly works on your account, and how many others do they run?
• What is their link-building approach, and would they ever guarantee a ranking?
• Can they show real work across more than one industry?
• How is pricing structured, and what is actually included?
• What is a realistic timeline before you see results?
• What do the contract and exit terms actually say?
• Do they ask about your business before pitching tactics?

None of these questions are about whether an agency does SEO well in the abstract. Almost every agency claims that. They are about whether the answer is specific to your business, or a script they give every prospect.

What does an SEO agency actually do?

An SEO agency is a team you hire to grow the traffic your website gets from search engines like Google, without paying for ads.

That work generally splits into three parts: technical SEO (making sure your site can be crawled, indexed and loaded fast), content (creating and improving pages that answer what people are actually searching for), and authority building (earning links and mentions from other credible sites).

A good agency does not treat these as separate line items; they connect. A technically fast site with no content ranks for nothing. Strong content on a broken site never gets seen. Every answer an agency gives should touch more than one of those three parts.

The ten questions, one by one

1. What will you audit first, and what will you actually show me?
   Ask for a specific, prioritised audit plan, not a vague promise to analyse everything. A strong agency can name what they would check first (site speed, indexing errors, competitor gaps, existing content performance) and why that is the starting point. Ask to see a real audit from a past client, names redacted if needed.
2. How do you measure results: rankings, traffic, or revenue?
   Ask for a real report sample showing rankings, organic traffic, and leads or revenue. Ahrefs’ study of 300,000 keywords found AI Overviews reduce clicks by 34.5% for position-one results when they appear, so ranking alone tells you less than it sounds like.

A report built entirely around rank position, with no mention of clicks or leads, is a bigger red flag than a modest one.

1. Do you treat AI search visibility (GEO/AEO) as core strategy, or a bolt-on?
   AI Overviews appeared in 13.14% of all Google searches as of March 2025. That is mainstream, not fringe. Ask whether they optimise for AI answer engines like AI Overviews, ChatGPT and Perplexity, or only for traditional rankings. “Not yet” is a fair answer; it should just be theirs to give.
2. Who exactly will work on my account, and how many others do they handle?
   Ask for the person’s name, their seniority, and how many other accounts they run. A strategist juggling twenty accounts cannot give any single client the attention a proposal implies. A specific name and number is a strong answer.
3. What is your link-building approach, and would you ever guarantee a ranking?
   Ask how links are earned: guest posts, digital PR, original data, partnerships, not “we have a network.” Then ask about guarantees. Google states plainly that no one can guarantee a number-one ranking, and warns against claims of a special relationship with Google.

Any agency that guarantees a ranking, especially by a specific date, is either misinformed or misleading you. Walk away from that pitch regardless of how confident it sounds.

1. Can you show real work across more than one industry?
   Ask for two or three finished projects, not a logo wall. Range tells you they can adapt: a real estate brand built for institutional investors needs a different trust signal than a wellness brand, a lifestyle campaign, or an event-tech product.
2. How is pricing structured, and what is actually included?
   Ask what the retainer covers and what is billed separately: tools, content production, outreach costs, ad spend. Ahrefs’ 2026 survey of 439 providers put average agency pricing near $3,209 a month. Use it as a reference point, not a rule.
3. What is a realistic timeline before I see results?
   Ask in months, not weeks. Google’s own guidance says an SEO needs four months to a year to implement improvements and then show benefit. Anyone promising major results inside 30 days is overpromising or planning to cut corners.
4. What do the contract and exit terms actually say?
   Three points: the minimum term and notice period; whether you keep your dashboard, keyword data and account history if you leave; and whether underperformance is defined in writing, with a stated consequence.
5. Do they ask about your business before pitching tactics?
   By the final call, an agency should be asking about your goals, your competitors and your current gaps, not just describing their own process. A proposal built around your business looks different from a template.

If a pitch reads like it could be sent to your closest competitor with the logo swapped, ask what would actually change if it were built for you.

A quick checklist before you hire

Use this as a fast reference during your final evaluation call.

FAQ

What does an SEO agency do?

An SEO agency manages the technical, content, and link-building work needed to grow your website’s traffic from search engines, without paying for ads.

How much does it cost to hire an SEO agency?

Cost varies by scope and market, but industry survey data puts the average monthly retainer around $3,209. Ask for an itemised breakdown rather than comparing agencies on one number alone.

Should I hire an SEO agency or do it myself?

It depends on your time and in-house expertise. An agency brings dedicated tools, experience across sites, and faster execution, while doing it yourself keeps costs down if you have the skills and hours to spare.

Is an SEO agency worth it?

It is worth it when the agency can show a specific plan, real reporting beyond rankings, and pricing tied to your goals, and not worth it when the pitch is generic, the guarantees sound too certain, or nobody can name who is working on your account.