I would call you in a B2B deal if I needed junk removal for my clients! This is one of the pillars my business is built on. I don't want to tell clients they need the junk removed from their garage, shed, basement or property. I would call you myself and make it go away. You charge me, I charge them. I have actually made some decent money just making phone calls for furnace repair, fence building, roofing, garage doors, all because I was talking to clients and they mentioned it.
My point is, talk to other trades (preferable small businesses!) and see if they run into houses or properties that need you. You can also look out for houses that need landscaping, fence repair, snow plowing, PEST CONTROL, and send the contact their way. Once you build trust with a client they will take your recommendation seriously.