Your earn it in this business and once you have some years in and your getting your business by referral like she does it does get easier at least on the marketing end she has not advertised in say 20 years all of her business just comes to her based on her quality of work with her clients. 2 years ago she was number one agent out of 600 HUNDRED agents and she does not have a team..

I would drop your rent rate to match the market and advertise it as unfurnished.

How would I advertise the spaceI was also considering buying a few tiny homes and placing them on the empty portions of the lot.

Recognize this

May be able to google too.Most wholesale carpet stores will quote you a lot less than the guys advertising on TV and with big fancy showrooms but know there is still room to negotiate but may take you purchasing several times so that the salesman realizes you are a return customer.

I have read David Greene's BRRRR book and countless biggerpockets posts on the topic, but recognize there are market specifics I don't yet know.

Then you just increase the rent and advertise it as electrical is included.

Upon further inspection, I quickly recognized that the times they were allocating for various tasks were grossly overexaggerated.

Considering I will be maintaining the property (overseeing the construction so I can convert it to a multiplex, all the Airbnb needs including advertising and looking for customers), what would be a fair split?

These spaces can also be utilized for advertising space, enhancing the ROI.