I've developed, use with all my coliving properties, and teach HPM (household-led property management). 

First off- $4.5M for 48 units and 50% are vacant is not a steal, unless this property is located in a downtown area and you have a contact with a developer who will pay 2X to build a high rise. $93k/unit for 50% vacancy doesn't carry hardly any debt, hence why they are capping you at $500k.

PadSplit has developed a platform that aligns incentives among residents, property owners, and communities to make affordable housing possible for the private market.

How much is typical price to pay someone to develop land?

I think development is getting more and more common since we're so undersupplied in housing. 

. - Bathroom towels, hair dryer, soap, toilettires, etc. - Grill in the backyard.

. - property had TDR trasnferable development rights and can be built 5 stories on it.

Quote from @Robert Frazier: It's a banner week for our fledgling development business.

Part of the funds we are taking from a “C” market and will invest in an “A” market thus increasing both our development and monthly cashflow returns.4.  

Cross border taxation is very complicated, most developed countries like the US and Canada have sophisticated systems to ensure their residents pay taxes, and you are not likely to be able to achieve your goal of not paying Canadian taxes on Florida income while a Canadian resident.