Houston SEO costs between $1,500 and $10,000 per month for retainer-based services in 2026, according to pricing data from over a dozen local agencies. Updated July 2026. But that range tells you almost nothing useful. A personal injury firm in the Galleria and a taco truck in East End occupy completely different competitive universes, and quoting them the same price range is lazy at best, dishonest at worst. We run Arrowhead Marketing & Consulting out of Houston, and we have