Evaluation starts after the shortlist. If you have not yet drawn one up, our guide on how to choose the right SEO agency covers goals, service types and where to look. This page is about judging the agencies in front of you, and the proposal in your inbox.
An SEO agency's answers to twelve plain questions tell you more than any case study deck. The questions below are in the order a buying conversation usually runs.
Why does a structured evaluation matter?
SEO is a recurring cost, so a poor hiring decision compounds every month it goes uncorrected. A structured evaluation checks whether the agency has the process, the reporting standards and the people to deliver measurable results before you enter a long engagement.
The scale of the decision is easy to underestimate. Backlinko surveyed more than 300 SEO professionals (page updated 29 December 2025, global sample) and found the most common monthly retainer sits between $1,000 and $2,500, with agencies charging about 30% more than freelancers on average. That is a market estimate, not our price, and it is paid before any ranking, traffic or lead has moved.
A structured process also protects you from the most common trap: comparing agencies on price alone. Two proposals quoting the same monthly fee can describe completely different scopes of work. The questions below exist to surface what is included, not what is promised in the pitch.
SEO agency evaluation criteria: what to look for in an SEO agency
Before the 12 questions, use the table below as a quick filter during any sales call or proposal review. It sets out what separates an agency with a real process from a convincing sales presentation.
What to ask an SEO agency: 12 questions before you sign
Ask all twelve, not only the ones that feel comfortable. Agency vetting is mostly listening for specifics. The agencies worth hiring answer them without hesitation.
1. What does your discovery process look like for a business like mine?
A strong answer includes a technical audit, a competitor review and a conversation about your goals, your buyers and your growth priorities before any tactic is recommended. Google's guidance on hiring an SEO puts it plainly: the SEO should be interested in you and your business, and should ask what makes it unique, who your competitors are and how your customers find you. If they are not interested, find someone who is. An agency that proposes a strategy before understanding the business is working from a template.
2. Can you show case studies from a similar industry or business size?
Ask for work from businesses that resemble yours in industry, size, website authority or budget. Ask where the campaign started, what was done and how long results took. Broad claims such as "we tripled traffic" say little without the starting point, the actions and the time frame.
Then check references. Google's advice is to ask past clients whether the SEO gave useful service, was easy to work with and produced positive results. An agency that cannot name a client you may call should be treated with caution.
3. How do you define and measure success, and is it tied to revenue?
If the conversation stays on rankings and traffic and never reaches leads, sign-ups or revenue, the agency is taking a narrow view of SEO. Ask which KPIs they would report on for your account and how each connects to your business goals. The honest answer names the metric, the baseline and how it will be tracked.
4. What does your monthly reporting include?
Ask for a sample report before you sign. A useful one shows organic traffic, keyword movement, technical issues fixed, content published, and how that activity contributed to leads or other business goals. It explains both what was done and what effect it had.
A report that lists only blog posts published and backlinks acquired, with no connection to results, is a red flag. So is a report you can only see inside the agency's own dashboard.
5. Who will work on my account, and what is their experience?
Ask who owns strategy, who does the work and who runs the account day to day. If the salesperson cannot introduce the people who will do the work, you may have little visibility after onboarding. Ask whether you will speak to the specialists directly or only through an account manager.
6. What is your technical SEO process, and will you audit first?
Technical SEO covers crawlability, speed, Core Web Vitals, structured data and indexing, and everything else is built on it. A full technical audit should come before any serious spend on content or links. Google's guidance adds a practical safeguard: if an agency offers an audit, grant read-only access to Search Console at that stage, and expect the audit to give realistic estimates of improvement and of the work involved. Ask which tools they use and how findings are prioritized.
7. How do you build links, and can you show examples?
Good link building earns relevant links through content, digital PR and outreach. Ask the agency to explain its process and show links acquired for existing clients. Be cautious of anyone who promises a fixed number of links each month, uses private blog networks, or will not say where links come from. Poor links create problems that are slow to undo.
8. How do you approach content strategy and keyword research?
Look for an intent-first approach that targets the searches that signal buying, not only the ones with the highest volume. Ask whether they interview your team or customers to understand what sets your product apart, and how AI tools are used in their content process. Human-led content with expert review, assisted by AI where it helps, is the credible standard.
9. How are you optimizing for AI search: AEO, GEO and AI Overviews?
This has become one of the most important questions to ask, and it is also where the vaguest answers live. Ask whether the plan includes answer engine optimization (AEO), generative engine optimization (GEO), structured data and visible FAQ content, and whether that work sits inside the retainer or is billed as an extra.
If you are evaluating an agency that sells itself as an AI SEO or AEO specialist, ask three more things: how it measures your presence in AI answers (which prompts, which assistants, how often), what its technical SEO foundations look like (an AEO plan on a site that cannot be crawled is worth little), and which client it can show where AI visibility changed and what changed it. Our guide to zero-click SEO explains what the shift means in practice, and our AI SEO service page shows how we track it.
10. What is included in the price, and what is billed separately?
Ask for a line-by-line breakdown. Does the fee cover content, links, technical fixes and reporting, or only strategy and recommendations, leaving the execution to you? Ask what happens when you need more than the included scope in a month, and whether extra work is billed hourly or rolled into the next cycle.
11. What are the contract terms, and how do I exit if it is not working?
A short minimum term is reasonable, because SEO takes time to compound, but a twelve-month lock-in with no performance checkpoints and no exit is a risk. Confirm the notice period, any cancellation fee, and what happens to work in progress if you leave mid-contract.
12. What happens to my data, content and rankings if we part ways?
You should keep ownership of your website, your analytics and ad accounts, the keyword research and every piece of content created during the engagement, and that should be written down from the start. Google's guidance says the same about site ownership: make sure you retain ownership of the content and the accounts. If your data lives only in the agency's dashboard, or the agency will not confirm ownership in writing, treat that as a serious concern rather than a negotiating point.
How to evaluate SEO agency proposals side by side
When two or three proposals arrive, put them in one sheet with the same rows, so you compare scope with scope rather than pitch with pitch:
- Deliverables per month, in numbers: pages, articles, technical fixes, links, reports.
- What is excluded or billed separately, including AI-search work, design changes and development hours.
- Who does the work, named, and how much of their time you get.
- Metrics and baseline: which numbers will be reported, from which tools, measured against what starting point.
- Terms: minimum term, notice period, cancellation fee, ownership of accounts and content.
- Promises: any proposal that names a ranking or a traffic figure as a promise loses points, whatever the price.
Score the agency before you decide
Use this scorecard during or straight after each agency call. Rate each category from 1 (weak) to 5 (strong) and compare totals across agencies instead of first impressions.
- Discovery and strategy fit: did they take time to understand your business before recommending tactics?
- Proof of results: did they provide relevant case studies and a reference you can call?
- KPI clarity: are the success metrics tied to leads and revenue, not traffic alone?
- Reporting transparency: did they share a real sample report and explain data access?
- Technical depth: could they explain their audit process and how fixes are prioritized?
- AI search readiness: do they have a documented approach to AEO, GEO and AI Overviews, and a way to measure it?
- Pricing fit: does the fee match the written scope?
- Contract flexibility: are exit terms reasonable, and is ownership of data and assets clear?
In our own use of this scorecard, an agency at 30 or more out of 40 is worth shortlisting, and one below 20 has not shown enough capability or transparency to justify the spend, however strong the presentation. Those thresholds are our judgment, not a standard.
Reviewing your current SEO agency before you renew
The same questions work at renewal, with one change: you now have twelve months of evidence. Pull the Search Console data for the period yourself (clicks, impressions and position, by country) and set it against what the agency reported. Check which of the promised deliverables shipped. Ask what was learned and what will change in the next term.
If the numbers and the reports disagree, or if you cannot tell what the agency did in a given month, an independent review is worth the cost before you sign again. Ask any reviewer for read-only access only, and for a written list of findings with the evidence behind each one.
Final checklist before you sign the contract
Before the final decision, run through these checks:
- Speak with at least one current or former client directly, not only the references the agency offers.
- Read reviews on Google and Clutch for recurring patterns rather than single comments.
- Confirm in writing that you own the website, the analytics and ad accounts, and all content created.
- Read the cancellation terms and the notice period before you sign, not after you decide to leave.
- Check whether the agency's own site is visible in search for what it sells, as a basic credibility check.
- Be wary of unsolicited email offers. Google's guidance says to treat them with the same skepticism as any other spam, and that no one can promise a number-one ranking.
The evaluation mistakes that cost small businesses most, such as choosing on price alone or skipping the technical audit, are covered in our post on common SEO mistakes small businesses make.
Conclusion
Evaluating an SEO agency comes down to asking the right questions and looking for evidence behind every claim. Strategy, proof, reporting, pricing, AI-search readiness and contract terms should all be examined before you sign or renew. The agencies worth hiring will have no trouble answering.
PromotEdge International is an international strategy, technology, marketing and design company, and our delivery team is in India. Our SEO services start with a technical and competitive audit, and we report on the leads the work produces. SEO sits within our wider digital marketing work. If you are weighing whether SEO is worth it at all for a smaller business, read is SEO worth it for small businesses first.
Facts we rely on: see our company facts for what we state about ourselves and where each fact comes from.