How to Choose an SEO Agency: A Buyer’s Checklist

Choosing an SEO agency is a matching problem, not a beauty contest. The right agency is the one whose strongest skill matches your site’s biggest problem, who can name the specific pages and fixes it will touch first, and who explains its methods openly instead of promising rankings. Start by writing down what your site needs, then ask every agency the same questions, then drop anyone who trips one of the red flags Google itself publishes.

This guide covers organic SEO for ecommerce stores, SaaS companies, content sites and technical projects. If your customers find you on Google Maps, my guide on how to choose a local SEO company is the better fit, because Business Profile work follows its own rules.

I run Skyranko, which is an agency, so treat me as an interested party. Everything below works on us too.

Why Do So Many Businesses Hire the Wrong SEO Agency?

Because they shop for a service when they should shop for a skill. Simple as that. Almost every agency lists the same menu: audits, keyword research, content, links, reporting. On paper they look identical, so buyers fall back on price and a good sales call.

The trouble is that organic SEO covers very different jobs. A store with 20,000 products and duplicate filter pages needs a technical team. A SaaS company with a 40-page site needs content strategy. An agency that is brilliant at one can be average at the other, and its sales deck won’t tell you which.

In my experience, most bad hires aren’t scams. Nobody set out to cheat anyone. They’re mismatches, the kind that only show up four or five months later when the monthly report still looks busy but the traffic line hasn’t moved, and the owner finally realizes the agency was solving a different problem from the one the site actually had. Picture it: a content-heavy agency handed a migration, or a link-building shop handed a site that can’t get its pages indexed.

First, Do You Need an Agency at All?

Before you compare agencies, check that an agency is the right model. The answer depends on four things:

1. How many kinds of work your site needs. One heavy area, such as technical fixes only, often suits a specialist freelancer. Two or three at once suits an agency.
2. Whether anyone inside can manage the work. If nobody can review a crawl report or a content brief, you need an outside team with its own project management.
3. Your monthly budget. A very small budget buys little agency attention. A one-off audit may do more.
4. How urgent the problem is. A migration next month or a sudden traffic drop calls for senior hands now, not the cheapest proposal.

If one area is heavy and you can manage the work yourself, compare an agency against a freelancer before you go further. I lay that trade-off out in SEO agency vs freelancer. If two or more are heavy, keep reading.

Step 1: Write a One-Page Brief Before Any Sales Call

This is the step almost everyone skips, and it’s the one that makes every later step easier. Spend 30 minutes writing down what you actually want before you talk to anyone.

Your brief should answer five things:

• Site type and size: store, SaaS, publisher or service site, and roughly how many indexable pages.
• The main problem: traffic drop, flat growth, new site, migration, or pages not getting indexed.
• Your team: who writes, who can change code, and who will review the agency’s work.
• Your goal in plain numbers: more signups, more product sales, or more qualified leads.
• Your budget range and how long you can wait for results.

Send the same brief to every agency. Now their proposals answer your problem instead of their template, and you can compare them line by line.

Which Kind of Agency Fits Your Site?

This is where the path branches. Match the agency’s real strength to your site type.

Branch 1: Ecommerce Stores

If you run a store with hundreds or thousands of products, technical skill comes first. Faceted navigation, variant URLs, out-of-stock pages and category structure decide whether Google can even reach your products. I like to ask a candidate agency what it would do with a sold-out product page, and a good answer sounds like the keep, redirect or remove rules in my guide to handling out-of-stock product pages.

Ask the agency to show you how it would handle your filter pages before you ask about content. A strong ecommerce agency will open your site on the call and point at a real problem. A weak one talks about blog posts.

Branch 2: SaaS Companies

If you run a software company, the site is usually small and your developers can ship fixes. The heavy work is content strategy: comparison pages, use-case pages, and the problem-aware searches your buyers type before they know your product exists.

Here I’d favor an agency with a strong strategist and editors, and I’d ask how it will work with your product marketing team. If it can’t explain how it keeps your product claims accurate, move on.

Branch 3: Content Sites and Publishers

If your revenue comes from traffic itself, publishing rhythm and topical depth matter most. You want an agency that plans in clusters and updates old posts, not one that just ships new articles.

Ask to see a content plan it built for someone else, with names removed. A plan with priorities and internal links beats a list of 100 keywords.

Branch 4: Technical Rescues

If your traffic just dropped, or you’re about to change platforms, skip general agencies. Hire whoever has handled that exact situation before, and ask how many migrations or recoveries the named person on your account has personally run.

Questions to Ask an SEO Agency

Google’s own page on hiring an SEO suggests a short list of interview questions. I use those as the backbone and add the follow-ups that, in my experience, separate honest agencies from polished ones.

1. Can you show me examples of your previous work? Google suggests this one first. My follow-up: what did that client’s site look like before, and which of your changes mattered most?
2. Do you follow Google Search Essentials? Everyone says yes. Ask for one tactic they refuse to use, and why.
3. What results do you expect, in what timeframe, and how do you measure success? A fair answer gives a range and names the metric, such as organic signups or revenue, not only rankings.
4. What’s your experience in my industry? Then ask what makes SEO in your industry different. Real experience produces a specific answer.
5. What’s your experience with sites like mine? Size matters as much as industry. Running SEO for a 50-page site is not the same job as a 50,000-page store.
6. How long have you been in business? A young agency can be great. You just want to know who has done this before.
7. Will you share every change you make, and the reasoning behind it? Google lists this too. Ask to see a sample change log.
8. Who will work on my site each week? Get a name and a role, and ask to meet that person before signing.
9. What will you change in the first 30 days? Look for named pages and fixes, not “a full strategy.”
10. How do you earn links? Listen for content, digital PR and partnerships. If money changes hands for a link, Google’s spam policies say that link must be qualified with rel=”sponsored” or rel=”nofollow.”
11. What access do you need? For an audit, Google advises giving read-only Search Console access at first. Full access can wait until you trust them.
12. What do I keep if I leave? Content, reports, analytics settings and any accounts should all stay in your name.

My favorite is question 9. Why? It’s hard to fake. An agency that studied your brief can name three real pages it would fix on day one, and one that didn’t will fall back on vague phrases.

What Are the Red Flags Google Warns About?

Google publishes its own warning list for anyone hiring an SEO. These are the ones I’d treat as instant deal-breakers.

• Guaranteed rankings. Google says plainly that no one can guarantee a #1 ranking on Google.
• A “special relationship” with Google or “priority submit.” Google says these claims should make you wary. There’s no paid lane into organic results.
• Secret methods. If an agency won’t explain what it does, walk away. Google advises being wary of anyone who can’t clearly explain their tactics.
• Link schemes. Networks of sites, paid links passing ranking credit, or submission to thousands of search engines. Google calls mass submission a useless exercise, and paid links without qualification break its link spam policy.
• Unsolicited “we found problems on your site” emails. Google compares them to spam and says to treat them with the same caution.

I’d add two of my own. Be wary of anyone who wants to publish hundreds of thin pages quickly, because Google’s spam policies target scaled content made mainly to manipulate rankings. And be wary of a proposal that has no single page of your site named anywhere in it.

How Do You Compare Two Good Proposals?

Once the red flags have thinned your list, you’ll often have two agencies that both sound fine. Here’s how I’d break the tie.

Check the specificity. Put both proposals side by side and count how many of your actual URLs each one mentions. The one that studied your site before quoting usually studies it after signing too.

Check the first 90 days. A good plan front-loads fixes you can verify: pages fixed, redirects cleaned, briefs delivered. If month one is only “research and strategy,” you’ll wait a long time to learn whether the agency is any good.

Check the reporting. Ask for a sample monthly report. It should connect work done to outcomes you care about, drawing on data you can see yourself in Search Console and analytics. A report of rankings for keywords you never agreed on is decoration, and I list the other deliverables a good retainer should produce in my breakdown of the real work an SEO company does.

Check the exit. Read the notice period, the renewal terms and who owns the content. A shorter first term, or monthly renewal, keeps both sides honest.

If you still can’t decide, pay for a small, fixed project first: an audit or one content sprint. You’ll learn more from 30 days of real work than from three more sales calls.

How to Choose an SEO Agency: The Decision Matrix

Here is how to choose an SEO agency in one table, if you skipped straight here.

When Should You Go Beyond a General Agency?

Some problems need a narrower specialist. If Search Console shows a manual action, hire someone who has written successful reconsideration requests before, and read Google’s instructions yourself so you know what they’ll ask for.

If your site is in health, finance or law, pick an agency that works with subject experts and can explain how claims get checked. Mistakes in those areas carry real risk to readers, and a general content team isn’t enough.

And if a migration involves a new platform plus new URLs, get your developers and the SEO in the same room before anything goes live. That’s where I’ve seen the most avoidable traffic losses.

Where Skyranko Fits

If you’d like an agency on your shortlist, our complete SEO service starts from $999 a month and covers technical, content and link work under one plan. Put us through the same 12 questions as everyone else.

If you’re not ready to talk to anyone yet, the free SEO audit will tell you which of the branches above your site falls into.

Frequently Asked Questions

How Many SEO Agencies Should I Talk To?

Three is usually enough. Fewer gives you nothing to compare against, and more turns into a week of sales calls that all sound alike. Send each one the same written brief so the proposals line up.

How Long Should I Give an SEO Agency Before Judging It?

Rankings take time, so judge the work before the results. By the end of month one you should see named fixes shipped and a clear plan. By month three you should see early movement in Search Console impressions for the pages they worked on.

Is It a Red Flag if an Agency Won’t Share Its Methods?

Yes. Google’s own hiring advice says to be wary of SEOs who can’t clearly explain what they do. You don’t need their internal checklists, but you should understand every change made to your site and why.

Should an SEO Agency Have Full Access to My Search Console?

Not at first. Google recommends giving read-only access for an audit. Once you’ve agreed on the work and trust the team, you can raise the permission level.

Last updated: September 2026 by Mizanur Rahman