The 4 channels that actually generate commercial cleaning leads
1. Cold email to facility decision-makers - highest ROI, fully scalable, the #1 channel for new commercial contracts in 2026. 2. LinkedIn outreach to office managers and facility directors - pairs perfectly with cold email. 3. Local SEO for 'office cleaning [your city]' style searches - slower but compounds over time. 4. Referral systems with property management firms and commercial real-estate brokers. Everything else (Yelp, Thumbtack, HomeAdvisor, generic Facebook ads, buying lead lists) is either residential-focused or sells the same lead to 5 of your competitors. Skip them.