Real estate agents use door knocking safely by focusing on permission-based outreach tied to a clear value, such as a listing update or market news. Avoid random, salesy approaches that feel intrusive. Combine doorstep introductions with respectful door hangers and neighborhood invites. Always prioritize safety by working with partners or during daylight. Afterwards, follow up digitally through email or social media to build trust and maintain connections. This safer, value-first approach improves lead generation without risking safety or reputation.