Meet With Prominent Builders and Post a Video
When you do videos like this, people will see you as an expert in the area, you're building your YouTube channel, the builder will appreciate the publicity, and it doesn't cost you a dime to do it. This is just a casual sit-down interview.
Before the recording starts, find out what the builder would like to highlight, tell him what you are going to ask him, and then just start talking. It's easy ... and free.