Typically if you attend any investor meetings about 1/2 the crowd in many groups are agents looking for business.If you want to network, try service clubs, alumni groups, charities, religious groups, hobby groups or whatever interests you. 

if he performs a service for you, just pay him for it. 

Usually having a servicing company helps the lender to consider that.  

I would also look at the availability of public water and public sewer, if not at the site how far away are those services.

I have read I will need to use a third party service to make this happen.  

Quote from @Jason Wray: Kathy,When you use those websites you are getting stuck with a small list of lenders that sign up on their website and services.

I suggest using a service like Mayistay.

There are companies such as Cover that offers a full service ADU deliverable from design through construction completion.

Future enhancements include the planned Silver Line rail alignment with nearby stops, as well as potential commuter bus services, pedestrian paths, and bike lanes.The development benefits from proactive rezoning by the city, transitioning the land from industrial to mixed-use urban development.

There are lenders out there spending a ton on advertising with an army of correspondent's funneling them loans and many can very well be one and done borrowers because the loan servicing/construction admin is lousy.