You have proposals in front of you. This guide gives you a framework to compare them accurately and make the process of choosing an SEO company easier. It’s not a generic checklist, but a way to read what agencies are actually showing you.

How to compare two similar portfolios

When two SEO agencies both show polished case studies, relevance matters more than aesthetics. Start here: Does their actual client history map to your situation?

Go beyond the screenshots. Search the company names from their case studies, find the live sites, and spend three minutes on each one. Check page speed, test the mobile experience, click into category and product pages — not just the homepage. Agencies control what they show you in a PDF. They don't control what the live site actually does.

Look at the dates. A portfolio built entirely on work from three or four years ago is a signal worth noting. SEO has shifted substantially since then, and an agency whose most recent results are from 2021 may be running a 2021 playbook. Recent wins, such as those within the last twelve to eighteen months, carry more weight.

A portfolio that holds up on mobile, on interior pages, and on live URLs is a stronger signal than the one that only looks good in a slideshow.

Red flags in proposals

Vague scope. This is the most common problem in SEO proposals, and it costs clients money. If a proposal uses phrases like "ongoing optimization" or "content support" without specifying how many pieces, how many hours, measured against what, you are looking at scope that will be disputed later. Every deliverable should be named, sized, and tied to a timeline.

Guarantees specific rankings (e.g., "we'll get you to page one in 60 days"). No agency can guarantee rankings because Google's algorithm is not something anyone controls. This suggests either naivety or deliberate misrepresentation.

Lack of the discovery process. An SEO agency that quotes you before running any kind of discovery process is telling you something. Accurate SEO pricing requires understanding your site's current technical state, your competitive landscape, and your content baseline. A proposal that arrives within 24 hours of a first call, without a site review or a structured intake, is a template with your name on it, and not a plan built for you.

Inability to explain where their links come from. Link building is the most prone to shortcuts that work briefly and damage you in the long run. If the SEO agency is vague about sourcing, assume the worst.

Case studies show traffic growth, but no mention of conversions or revenue. Traffic without business impact is easy to manufacture. Ranking for low-intent keywords inflates numbers without moving the business.

Watch for proposals that emphasize awards and credentials rather than client outcomes. Industry recognition is not irrelevant, but a proposal that spends three pages on accolades and half a page on what the SEO company will do for your rankings has its priorities backwards.

If the proposal does not mention what happens after the audit and the initial optimization push, treat that as a gap to probe. SEO is an ongoing investment, and an agency that cannot articulate its long-term rhythm is either planning to coast or has not thought past the sale.

A proposal that is specific about deliverables, honest about timelines, and grounded in client outcomes is a better signal than a polished document full of vague commitments.

Red flags in how they communicate

The sales process is the clearest preview you will get of what the project relationship looks like. An agency that takes three days to return an email before you've signed is not going to become more responsive once you're a retainer client competing with their other accounts. Baseline communication speed during the pitch matters because the agency is motivated to impress you at that stage.

Pay attention to how they explain their process. An experienced SEO team can describe what it does and why in plain language. If a conversation about methodology produces jargon, deflection, or answers that don't address what you asked, that is not expertise — it is either confusion or a deliberate attempt to make the work seem more opaque than it is.

They talk more than they listen in early conversations. A discovery call where the agency spends most of the time pitching rather than asking about your business is a sign of how they'll run the relationship. Good SEO agencies are diagnostic before they're prescriptive — they need to understand your situation before they can have an informed opinion about what you need.

Urgency tactics are a reliable red flag regardless of industry. An agency that tells you the price increases next week, that they only have one spot left, or that you need to decide immediately is managing you, not advising you. Pressure to sign quickly benefits one party in the negotiation, and it is not you.

The agency speaks about competitors dismissively. Agencies that speak poorly about other SEO agencies or who are quick to tell you how bad your current setup is before they've properly reviewed it. They tend to be more interested in making themselves look good than in solving your problem.

They can't give you a straight answer on timeline or scope. Vagueness about "it depends" without then explaining what it depends on is a deflection, not an answer. Every experienced agency has seen enough engagements to give you an honest range. If they won't commit to even that, they're either inexperienced or avoiding accountability.

How an agency communicates when it wants your business is the most honest version of how it will communicate when it has it.

15 questions to ask SEO companies before signing a contract

These 15 questions are designed to help you determine if the SEO agency’s processes, experience, and expertise meet your business needs before you sign.

A trustworthy SEO company will answer each one clearly and specifically. In contrast, vague or evasive responses are as informative as the answers themselves.

1. Can you share case studies from clients in my industry with comparable site size and competition level?
2. What is the typical timeline before your clients see measurable rankings or traffic improvements?
3. Which specific SEO tactics will you prioritize for my site in the first 90 days, and why?
4. How do you approach SEO differently for my industry or niche?
5. How are you adapting your strategy for answer engine optimization (AEO) and generative engine optimization (GEO)?
6. How do you balance technical SEO, content, and link building in your overall strategy?
7. How do you handle technical SEO recommendations? Do you implement them, or do I need my own developer?
8. What link building methods do you use, and can you provide examples of sites you have secured placements for past clients?
9. Who on your team will be working on my account day-to-day, and what are their qualifications?
10. What specific deliverables will I receive each month, and in what format?
11. Which metrics do you report monthly, and how do you tie SEO performance to business outcomes like leads or revenue?
12. Have you handled a Google penalty recovery before, and what was the outcome?
13. How do you communicate algorithm updates that may affect my rankings, and what is your response process?
14. Who owns the content, backlinks, account access, and reporting dashboards after the contract ends?
15. What is included in the monthly retainer, and what is billed separately?

How to make the final call when you’re genuinely stuck

When two agencies look equal on paper, ask each one to connect you with a client reference. Not a name on a list, but a direct conversation with someone whose engagement resembles yours in scope and industry. Meet the people who will run your account before signing. The team that closes the deal and the team that does the work are often different people.

When everything else is even, the agency whose communication during the sales process felt clearer, more direct, and more like a genuine exchange is the one that will be easier to work with when problems arise — and problems always arise.

Compare vetted SEO companies on DesignRush side by side — browse the directory with verified reviews, portfolio samples, and pricing ranges.