Building an In-House SEO Team, and When Not To
The in-house SEO team decision most companies get backwards. What to keep internal, what to hire out, and how to structure a hybrid that actually performs.

The decision most companies get backwards
The question I get asked most by executives is some version of "should we build an in-house SEO team or hire an agency?" It is the wrong question, phrased as a binary, and the binary is why so many programs stall. The real answer is almost always both, and the skill is knowing which parts of the work belong inside the building and which parts you should never try to own.
Here is the pattern I have watched play out across fifteen years, from General Motors to large agency programs. Companies build in-house SEO teams to handle the things they should have rented, and they rent the things they should have owned. They hire a generalist to write blog posts internally, then pay an agency to hold the institutional knowledge of their own site. That is exactly backwards, and it is expensive in both directions.
Let me lay out how the build-versus-buy decision actually works, what a well-structured in-house SEO team keeps, what it hires out, and how to run the hybrid that beats either extreme.
What only an insider can do
Start from a simple principle: keep the work that compounds with proximity to the business, and rent the work that scales with specialized tooling and pattern exposure.
Some things get better the closer they sit to your product, your data, and your roadmap. Nobody outside your walls can do them well, no matter how good they are:
- Prioritization and roadmap integration. SEO wins when it is baked into how the product and engineering teams already work. An outsider files tickets and waits. An insider sits in the sprint planning and gets the canonical fix shipped in the same release as the feature. This is the entire argument for an enterprise SEO operating model: the program is a system that runs inside your delivery machine, not a report that arrives from outside it.
- Institutional memory. Why is that subfolder noindexed? What broke in the last migration? Which VP will kill any change to the URL structure? That knowledge lives in people who stay, and it is worth more than any audit.
- Cross-functional influence. Getting a developer to prioritize a crawl fix, or convincing merchandising to stop spawning duplicate category pages, is a relationship game. Relationships do not transfer with a statement of work.
- The judgment calls. Which twenty percent of the audit findings actually move revenue is a business question, not a checklist. Running the SEO audit that finds the 20% that matters is easy to hand off and dangerous to hand off, because the ranking of what matters depends on knowing the business cold.
If a capability lives on this list, you build it. Owning it is the point.
What you should almost always rent
Other work gets better with volume, specialized tooling, and exposure to hundreds of sites a generalist will never see. Trying to own it in-house means paying a full salary for a skill you need three weeks a year, or worse, asking a smart generalist to fake depth they do not have.
- Deep technical audits and migrations. A site migration is a high-stakes, infrequent event. You do not keep a migration specialist on payroll for something you do once every few years. You rent the person who has done many of them.
- Link earning and digital PR. This is a relationship and outreach discipline with its own muscle, its own contacts, and its own rhythm. It rarely justifies a full internal seat.
- Surge capacity and specialized skills. Structured data at scale, log-file analysis, international rollouts, a content sprint that needs ten writers for a quarter. These are spikes, and you staff spikes with partners, not headcount.
- An outside read. Even the best internal team goes blind to its own site. A periodic outside audit exists to tell you what you have stopped seeing.
Rent this work and you get depth on demand without carrying the cost between demands.
The Keep-Rent-Blend framework
Here is the model I use to sort any SEO capability into the right column. Run each function through three questions in order.
1. Does it compound with proximity to the business? If the work gets materially better because the person understands your product, roadmap, and politics, keep it. Strategy, prioritization, and internal influence live here.
2. Does it require depth you would use less than a quarter of the year? If yes, rent it. Migrations, technical deep-dives, and link campaigns are spikes, not standing needs. Paying a salary for a quarterly need is how budgets die.
3. Does it produce volume that a system can run? If the work is high-throughput and process-driven, blend it: own the system and the standards, rent the labor. Content production is the clearest case. You keep the brief, the standards, and the editorial judgment in-house, and you scale the drafting with vetted partners against your spec.
That third column is where most companies get it wrong, so let me be concrete. The mistake is hiring a single in-house writer to produce all content, which caps your output at one person's throughput and one person's expertise. The fix is to own the content brief and the quality bar, then flex the production capacity up and down with outside writers. You keep the thing that determines quality; you rent the thing that determines quantity.
How to structure the hybrid
The strongest programs I have run or advised share a shape. A small, senior in-house core, and a bench of specialized partners around it.
The in-house core is two or three people, not ten:
- An SEO lead who owns strategy, forecasting, and executive communication, and who can sit in a room with the CFO and defend the number.
- A technical SEO or SEO-minded engineer who lives close enough to the codebase to get fixes shipped, not just filed.
- A content or program owner who holds the editorial standard and manages the outside production bench.
That core does not do all the work. It owns the strategy, the standards, and the relationships, and it directs the rented capacity. The lead's real job over time is to make the program run without heroics, which is the whole thesis behind making yourself unnecessary in marketing operations: build the system so well that it does not depend on any single person staying late.
One warning on the human side. An in-house SEO team is a technical and creative team sharing one goal, and those two temperaments do not manage themselves. The engineer wants tickets and specs; the content owner wants latitude and taste. Getting them to pull together is a leadership problem, and it is worth reading how to approach leading technical and creative teams before you hire the second seat, not after the first conflict.
When not to build at all
Sometimes the honest answer is: not yet. Do not build an in-house SEO team when organic is not yet a proven channel for you, when leadership will not commit to a multi-year horizon, or when you cannot yet articulate what a great hire would even own. In those cases, rent everything, prove the channel, and let the first internal hire be the reward for a program that is already working, not a bet that one might.
The takeaway
Stop treating build-versus-buy as a coin flip. Keep the work that compounds with proximity, strategy, prioritization, standards, and internal influence. Rent the work that spikes or scales, migrations, link earning, and production labor. Blend the high-volume work by owning the system and renting the hands. A small senior core directing a specialized bench beats both a bloated internal team and a fully outsourced one, every time.
Keep reading: SEO for SaaS: Building an Organic Growth Engine, How to Budget for SEO, and Defend It, The First 90 Days on a New SEO Program.
If you are staring at an org chart trying to decide what to build and what to hire out, that is a conversation worth having before the reqs go out. The channel is open by introduction. Bring your current structure and your roadmap, and we will draw the right split together.
Written by Joseph Carroll, Carroll Consulting Services. Connect on LinkedIn ↗
