--- title: "In-house or agency SEO: the hybrid model that actually works" url: https://marketingsignals.com/insights/in-house-or-agency-the-hybrid-that-works type: Article date: 2026-11-02 author: "Gareth Hoyle" --- # In-house or agency SEO: the hybrid model that actually works In-house vs agency SEO is a false choice. What to keep inside, what an agency does better, how to split the work and when to bring it in-house. ## Key takeaways - In-house versus agency is usually the wrong question: the useful one is who owns which decisions. - Keep strategy ownership, product knowledge, content approval, development priority and every data account in-house. - Use an agency for specialist depth, Digital PR and link capacity, cross-client pattern recognition, cover and fast-moving disciplines such as GEO. - Most duplicated effort comes from two teams assuming the other has it, so run one plan, one backlog, one set of numbers and named owners per workstream. - Bring work in-house when the volume is steady, the work is core to what makes you different and you can hire and keep someone good at it. Every couple of years the question comes back, usually after a flat quarter or a new finance director: should we bring SEO in-house? In-house vs agency SEO is nearly always framed as a choice between two options. For most mid-market and enterprise brands, it is the wrong choice to be making. The brands that get good results from search rarely do it all in-house or all through an agency. They keep some decisions close and buy in depth where they need it. The question is not who does the work. It is who owns which decisions. This piece sets out what to keep in-house, what an agency is better at, how to split the work so nobody does it twice, and when it makes sense to bring something back inside. ## Why it is a false choice All in-house sounds cheaper and more committed. But search now covers technical SEO, content, Digital PR and links, paid search, analytics and visibility in AI answers. A team that covers all of that at senior level is a large team. A team of two covering it all is spread thin, with gaps whenever someone is on holiday or hands in their notice. All agency sounds simpler. But an agency without product knowledge, quick approvals and developer time produces recommendations that sit in a backlog. In our experience, most agency relationships that fail do not fail on ideas. They fail on implementation. Both models break in the same place: the join between the people who know the business and the people who know the channel. A hybrid works when that join is designed rather than left to chance. ## Signs your current split is not working When a team asks us to look at how its search work is organised, these are the signs we look for first. Two or more usually means the problem is the set-up, not the people. - Agency recommendations sit in the backlog for more than a quarter. - Two teams produce content on the same topic, or two reports give two different revenue numbers. - Nobody can say who decided to deprioritise a fix, or why. - The agency finds out about product launches, price changes or site releases from the website. - Your in-house specialist spends most of the week on work they were not hired to do. ## What to keep in-house - Ownership of the strategy. One named person accountable for search results, with the authority to make trade-offs. Not a committee, and not the agency. - Product and customer knowledge. What sells, where the margin is, what customers ask and why they send things back. An agency can learn this, but it has to be fed from inside, constantly. - Content approval and brand voice. Keep the sign-off, and set a turnaround time for it. Slow approvals cost more search performance than most technical faults. - Development priority. The developer queue is where most search plans stall. Someone inside has to be able to get search work into the sprint. - Data and accounts. Analytics, Search Console, ad accounts and Merchant Center should be owned by you, with agencies given access, never the other way round. - Commercial calls: budgets, markets and which products to push. ## What an agency is better at An agency is not better at caring about your business. It is better at work you need in depth but not full time, or at a scale you cannot justify hiring for. - Specialist depth. A senior [technical SEO](https://marketingsignals.com/glossary/technical-seo) for a migration, an analytics specialist for a tracking rebuild: skills you need intensely for a few months, then occasionally. - Link and PR capacity. [Digital PR](https://marketingsignals.com/glossary/digital-pr) depends on journalist relationships, a pipeline of campaigns and enough volume to learn what lands. That is hard to build for one brand. - Pattern recognition. An agency sees algorithm updates, AI search changes and platform shifts across many sites at once, and notices what moved first. - Cover. Holidays, sickness, resignations and notice periods do not stop the work. - New disciplines. [Generative engine optimisation](https://marketingsignals.com/glossary/generative-engine-optimisation) changes every quarter, and few brands can justify a full-time hire for it yet. ## How to split the work This is a split we see work for many e-commerce and B2B teams. It is a starting point, not a rule. - Technical SEO: the agency audits, ranks fixes by revenue and writes the specification; your developers ship it; the agency checks it after release. - Content: your team supplies expertise and approves; the agency researches demand, writes briefs and optimises. Production sits wherever you have capacity. - Digital PR and links: usually the agency, briefed on your products, data and spokespeople. - Paid search: in-house when spend is large and steady enough to justify a specialist; agency when you need depth across Shopping, Performance Max and testing. - Analytics: you own the setup and the definitions; the agency reads from it and never keeps its own version of the truth. - AI search visibility: agency-led for now, with your product and PR teams feeding it. The split shifts by sector. Our playbooks for [e-commerce](https://marketingsignals.com/playbooks/the-e-commerce-visibility-playbook), [B2B lead generation](https://marketingsignals.com/playbooks/the-visibility-playbook-for-b2b-lead-generation) and [SaaS](https://marketingsignals.com/playbooks/the-visibility-playbook-for-saas) show where the weight usually falls. ## Governance that stops work being done twice Duplicated effort is the hidden cost of a hybrid. It is avoidable with five habits. 1. One plan and one backlog. In-house and agency work from the same roadmap, ranked by expected revenue, not separate lists competing for the same developer. 2. A named owner for each workstream. Write down who decides, who does the work and who is told. Most duplicated effort comes from two teams each assuming the other has it. 3. One set of numbers. Agree the KPIs and their definitions once, and report from your data. We argue for [measuring your agency on revenue, not rankings](https://marketingsignals.com/insights/measure-your-agency-on-revenue-not-rankings). 4. A fortnightly working session and a quarterly review. The first clears blockers. The second decides what to continue, change or stop. 5. Written handovers. Agency work should be documented well enough that your team could pick it up. That protects you, and it keeps the agency honest. ## When to bring work in-house Bring work inside when three things are true: the volume is steady, the work is close to what makes you different, and you can hire and keep someone good at it. Content production for a large catalogue and the day-to-day running of a large paid account often pass that test. Keep it outside when the need is lumpy, highly specialist or changing fast. For most brands that means migrations, Digital PR, link acquisition and AI search. And move work back out if an in-house specialist spends more time on tasks outside their skill than inside it. Google's own [guidance on hiring an SEO](https://developers.google.com/search/docs/fundamentals/do-i-need-seo) says a site redesign is a good time to bring one in, and early in the process rather than at the end. We would add: before you hire a permanent team, because the redesign will show you which skills you need full time. ## The fair counterpoints "Agencies cost more." Per hour, often. Per result, it depends on use. A specialist you need two days a month costs more as a salary than as a fee. Compare the fully loaded cost of a hire with what you would actually use. "An agency will never know our business like we do." True, which is why product knowledge stays inside and gets shared on a schedule. If an agency still does not understand the business after three months, fix the brief or change the agency. "In-house people are more committed." Usually. They also leave, and when they do the knowledge goes with them unless it is written down. Commitment is not a substitute for documentation. "Using an agency means losing control." Only if the accounts, the data and the decisions sit with the agency. Keep those inside and an agency is a supplier you can change, which is exactly how it should feel. ## Questions to ask before you decide - Which search decisions does one named person in our team own today? - Where does our search work stall: ideas, approvals or development? - Which skills do we need full time, and which for a few months a year? - Do we own every account and dataset, and could we run the programme tomorrow if the agency left? - Are we and our agency working from one backlog and one set of numbers? ## How we work with in-house teams Most of our work runs alongside in-house teams across [integrated search](https://marketingsignals.com/service/integrated-search). We start with paid research into where you are and what your team can carry, then agree a fixed, scoped fee for the parts we are better placed to do. It is the same reason we think [research should be paid for before a retainer](https://marketingsignals.com/insights/market-feasibility-report-not-agency-proposal). If you are weighing up the split, [book a growth plan call](https://marketingsignals.com/contact-us). ## Frequently asked questions ### Is it better to hire an SEO agency or build an in-house team? For most mid-market and enterprise brands, a hybrid works better than either on its own. Keep strategy ownership, product knowledge, content approval, development priority and data in-house, and use an agency for specialist depth, Digital PR and link building, cross-client pattern recognition and cover. The deciding question is who owns each decision, not who does each task. ### What parts of SEO should stay in-house? Keep the decisions that depend on knowing the business: a named owner for search strategy, product and customer knowledge, content approval and brand voice, development priority, and ownership of every data account, including analytics, Search Console, ad accounts and Merchant Center. Agencies should be given access to your accounts, not hold them, so you could run the programme without them if needed. ### How do in-house teams and agencies avoid duplicating work? Work from one plan and one backlog ranked by expected revenue, name an owner for each workstream, and agree one set of KPIs reported from the brand's own data. A fortnightly working session clears blockers and a quarterly review decides what to continue, change or stop. Documented handovers mean either side can pick up the other's work. ### When should you bring SEO in-house? Bring SEO work in-house when the volume is steady, the work is close to what makes the brand different and you can hire and keep a capable specialist. Content production for a large catalogue often qualifies. Lumpy, highly specialist or fast-changing work, such as site migrations, Digital PR, link acquisition and AI search visibility, usually stays more efficient with an agency. ## Sources - [Google Search Central: Do you need an SEO? (last updated 5 June 2026)](https://developers.google.com/search/docs/fundamentals/do-i-need-seo) Visibility Playbooks ## Related Playbooks More Insights ## More articles we think you’ll like