Measuring and managing
What an SEO audit should include
Published 24 August 2026 · Updated 26 August 2026 · 7 min read
A good audit is a prioritised list of decisions, not a hundred page export of everything a tool noticed.
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An audit is the best first purchase in SEO. It costs a fraction of a year’s retainer, it produces something useful whether or not you hire the agency, and it tells you more about how a team thinks than any pitch.
What should be in it
- Business and market context. What you sell, who to, what a customer is worth, and who genuinely competes with you in search. An audit that skips this is a tool export.
- Technical. Crawling, indexing, speed, duplicates, structure and mobile. Covered in technical SEO explained.
- Keyword and content. What you rank for now, what you should target, and which pages are competing with each other. See keyword research basics.
- On page. Titles, headings, internal linking and how well each page matches its intent.
- Links and authority. What you have, what your competitors have, and anything carrying risk.
- Local. For any business serving a place: profile, citations, reviews. See the local SEO guide.
- A prioritised plan. The section that makes the rest useful.
The part most audits get wrong
Tools produce hundreds of findings, most of which do not matter. The value an experienced practitioner adds is deciding which five things would change your results and which ninety can be ignored. A good audit therefore ends with a short list, each item marked with expected impact, effort, and who needs to do it.
What a free audit is worth
Free audits are almost always an automated crawl with a logo on it. They flag generic issues that apply to nearly every site, and they exist to open a sales conversation. That is not dishonest, but treat it as marketing rather than diagnosis. Cold emails offering one belong with the other SEO agency red flags.
What is genuinely worth asking for free is twenty minutes of observations. A capable agency will happily tell you two real problems with your site, and their willingness to do so tells you a great deal.
Using an audit as a trial
Paying two shortlisted agencies for an audit each costs less than one month of a retainer and produces a genuine comparison: two diagnoses of the same site, side by side. Differences in what they prioritise are more revealing than any proposal. Combine it with the interview questions and you have a proper selection process, as set out in how to choose an SEO agency.
To find agencies offering it, see SEO audit Bristol, or request quotes and specify that you want a paid audit rather than a retainer.
Good to know
Frequently asked questions
How much should an SEO audit cost?
Roughly £400 to £900 for a small site, £1,000 to £2,000 for a larger or more complex one, and more for ecommerce with a large catalogue. Anything under about £250 is likely to be automated.
How long should it take?
One to three weeks for a proper one. Same day delivery means a tool produced it.
Do I need an audit if my site is new?
Less so. A new site benefits more from a keyword and content strategy, since there is little history to diagnose. A short technical review at launch is still worthwhile.
Should the agency that audits also do the work?
They often do, and there is a mild conflict of interest in that the auditor recommends their own services. It is manageable, and the risk is smaller than the benefit of the person who diagnosed the problem also fixing it.
Written by the CompareSEO Bristol editorial team. We are an independent directory and we do not sell SEO services, so nothing here is written to win your business. Read our methodology for how we compile and check what we publish.
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