A custom SEO retainer runs $2,000–$15,000+ monthly, with the majority of Canadian agencies pricing between $3,500 and $7,500 for small-to-midsize businesses. Enterprise or highly competitive verticals can push into the $10,000–$25,000 range when you bundle technical audits, developer time, national content campaigns, and aggressive link acquisition. The price spread exists because "custom" means the scope flexes to your goals. A local plumber competing in Ottawa might need 8–12 hours of monthly work—light technical maintenance, local citations, a few blog posts—landing closer to $2,000–$3,000. A national SaaS company fighting for high-CPC keywords needs ongoing developer collaboration, 20+ content pieces monthly, outreach for authoritative backlinks, and conversion-rate optimization, pushing the retainer toward $8,000–$12,000 or higher. Key variables that move the needle: - Competitive intensity: Ranking for "personal injury lawyer Toronto" costs more than "Ottawa dog groomer" because the SERP is stacked with high-authority domains and aggressive link profiles. - Deliverable mix: Pure content retainers run cheaper than blended packages with technical SEO, schema implementation, and page-speed optimization requiring developer hours. - Reporting and strategy overhead: Monthly executive decks, quarterly roadmap sessions, and stakeholder calls add 10–20% to base production costs. - Link building: If the retainer includes outreach for editorial backlinks (not directory spam), expect $1,500–$4,000 of the monthly fee allocated here alone. Ottawa SEO structures custom retainers by identifying the bottleneck—technical debt, content gaps, or authority deficit—then pricing the hours and resources to move that lever every month. We avoid flat "SEO packages" because a retainer that works for a 10-location franchise doesn't fit a single-location service business. Expect a discovery call, competitor analysis, and a proposal that breaks down hours by discipline (technical, content, links, reporting) so you see exactly what you're paying for. Most custom retainers include a 3–6 month minimum because SEO doesn't show meaningful rank movement in 30 days.