What the industry data suggests
The Clio Legal Trends Report 2024 and Thomson Reuters' State of the Legal Market both note that digital marketing spend is now the largest share of new-client acquisition budgets at most plaintiff-side firms. Within that bucket, SEO retainers commonly land between C$3,500/mo (single-office boutique) and C$15,000+/mo (multi-state PI or immigration practice).
These ranges reflect senior strategist time, content production by lawyers or J.D.-trained writers, technical work, GBP management, and link development — not the rock-bottom C$500–C$1,500/mo packages that typically rely on AI-spun content and rarely survive Google's quality updates.
What drives a firm to the higher end of the range
Three factors push spend up: (1) practice area competitiveness — PI, mass tort, and immigration consistently cost more than estate planning or employment law; (2) geographic footprint — a single-city firm spends less than one targeting six metros; and (3) AI-search readiness — AEO/GEO content programs add meaningful production cost but are increasingly non-optional in 2026.
Firms tracked in the SEO for personal injury law firms and SEO for immigration lawyers verticals tend to budget at the upper end of the published ranges.
Project vs. retainer pricing
One-time technical and content audits for legal sites typically run C$3,500–C$10,000 depending on site size. A foundational rebuild (new site, content architecture, schema, GBP cleanup, citation rebuild) often falls between C$15,000 and C$60,000 as a project, then transitions to retainer.
Most firms get the best ROI from a project + retainer hybrid: fix the foundation in 60–90 days, then retain a smaller monthly team for content velocity and link development.
Budgeting against case value
A useful rule for plaintiff firms: monthly SEO budget should be roughly 1–3% of expected annual marketing-attributed revenue. A firm whose marketing-sourced cases generate C$3M/yr can rationally invest C$30K–C$90K/yr in SEO (C$2,500–C$7,500/mo).
Past results do not guarantee future outcomes; individual results vary by jurisdiction, competition, and intake operations.