Professional SEO in 2025 costs between $1,500 and $10,000+ CAD monthly for most Canadian businesses working with agencies. Small local businesses in Ottawa or similar markets usually pay $1,500–$3,500/month for foundational work: technical audits, on-page optimization, local citations, and basic content. Mid-market companies competing regionally or nationally spend $4,000–$8,000/month for deeper content strategies, link acquisition, and ongoing technical maintenance. Enterprise or highly competitive niches (legal, finance, SaaS) often exceed $10,000/month because they require aggressive link building, comprehensive content operations, and dedicated strategists. Hourly consulting runs $100–$300 depending on expertise and geography. Toronto and Vancouver agencies skew higher; smaller markets like Kitchener or Halifax trend lower. Project-based engagements—site migrations, penalty recovery, full technical overhauls—range from $5,000 to $50,000+ based on site size and complexity. Three factors drive cost variance: - Market competitiveness: Ranking for "personal injury lawyer Toronto" costs far more than "used bookstore Sudbury" because link acquisition and content volume requirements differ by orders of magnitude. - Current site state: A penalty recovery or full platform migration requires more hours than optimizing an already-healthy site. - Deliverable mix: Pure technical SEO is cheaper than full-service (content, links, technical, reporting). Link building alone can consume $2,000–$5,000/month in competitive spaces. At Ottawa SEO Inc., we've run campaigns from $2,000/month local builds to $15,000/month portfolio-scale operations across 500+ domains. The through-line is ROI expectation: if you're spending $5,000/month, you should see a path to 3–5x that in incremental revenue within 6–12 months, or the strategy needs adjustment. Cheaper than $1,500/month usually means diluted effort or offshore execution with minimal strategic oversight. SEO is labor-intensive; sustainable results require consistent expert hours, and those hours cost money.