Written by
Founder & CEO, Gspikes
I own and run Gspikes, the agency I founded in 2018. Before going all-in, I led SEO at Chain Reaction — one of the region's largest digital agencies — and shipped production code at Orange and Forbes. Everything published here comes from projects I've personally built, migrated, or ranked.
Last updated · August 2026
I’ve sat on every side of this question. I led SEO inside Chain Reaction, one of the region’s largest digital agencies, serving brands that could afford whole teams. Now I own Gspikes, where companies pay us retainers to be their search team. So when I lay out agency-versus-in-house, understand my bias — I sell one of these options — and also that I know both models from the inside, including their failure modes.
The real cost of the in-house hire
The salary line is where the math starts, not where it ends. A competent mid-level SEO in the US runs $70–110K; a senior who can own strategy, $110–160K. Add benefits and overhead (+25–35%), the tool stack they’ll rightfully demand ($500–1,500/month), and the quiet costs: three to six months of ramp before meaningful output, and single-person risk — when they leave, the program leaves with them, and re-hiring restarts the ramp.
The subtler problem is that “SEO” is at least four jobs — technical auditing, content strategy, link building and digital PR, and analytics — and no single hire is strong at all four. A solo in-house SEO is structurally a generalist who outsources their weak quadrants anyway… usually to an agency.
The real cost (and real catch) of the agency
Retainers for legitimate agencies run roughly $1,500–$15,000/month depending on scope and market — the full pricing map is in what SEO costs. For that you get the multi-skill coverage a solo hire can’t: a technical person, a content person, a link person, fractionally. The catch is equally real: your business gets a fraction of several people’s attention, agencies vary catastrophically in quality, and the bad ones hide behind dashboards designed to make motion look like progress.
The vetting question that cuts through most of it: ask what they’d do in month one for your specific site, and see whether the answer names your actual pages and problems or could have been sent to any prospect in your industry. Specificity is the tell. It’s the same test I recommend for choosing a development company — templates propose, professionals diagnose.
The comparison, honestly
| In-house hire | Agency retainer | |
|---|---|---|
| True annual cost | $90,000–$220,000 all-in | $18,000–$180,000 |
| Skill coverage | Deep in one or two quadrants | Fractional across all four |
| Business context | Total — lives in your Slack | Partial — as good as your communication |
| Ramp time | 3–6 months | 2–6 weeks |
| Key risk | Single point of failure; leaves with the program | Quality variance; divided attention |
Who should pick what
- Under ~$5M revenue: agency, almost always. You can’t fund the four-quadrant team, and a solo hire concentrates risk in one resignation letter. A good retainer at $2–5K/month buys more capability than $150K of payroll.
- Mid-size with content operations: hybrid. One in-house owner for strategy and institutional knowledge; agency for execution capacity in the technical and link quadrants. For most companies between $5M and $50M this is the strongest configuration, and it’s how our best client relationships are structured — their person steers, we row.
- Large org where organic is a primary channel: build the team. When search drives eight figures, full-time depth beats any retainer. (You’ll still bring specialists in for surges and audits.)
The variable that outweighs the org chart
After years on both sides: consistency beats configuration. An average agency retained for two years outperforms a brilliant hire who quits after eight months, and vice versa. SEO compounds — the timeline mechanics are in how long SEO takes — so the structure you can sustain for 24 months is the right structure, whichever row of the table it sits in.
If you’re weighing this decision with real numbers, send me your situation — traffic, market, what you’ve tried. I’ll give you a straight written answer on which model fits, including “hire in-house, here’s the job description” when that’s the honest call. What a retainer with us covers is on the SEO services page, prices included.
