Referrals still produce the highest-trust leads — almost a third of consumers say they prefer learning about a business through word of mouth — but referrals alone rarely fill a full pipeline. The next-highest-leverage sources, in order: a claimed and fully filled-out Google Business Profile (the single most important free lead source for most contractors), a website built to convert the visitors you already get, and listings on the directories your specific trade's customers actually search.
The mistake we see most is contractors chasing paid lead-gen platforms first, before the free foundation — GBP, website, reviews — is actually in place. Paid leads sent to a weak foundation convert worse and cost more than the same leads sent to a strong one.
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Full breakdown: How Roofing Companies Get More Leads