Does your local housing authority allow this type of arrangement? 

Sell the house as is or use the lot to build new construction and sell for 2.5+.

I guess because I’d need to look at different houses with clients it would be a hassle to them.

I’m wondering, when a house is purchased there would be an inspection but what is the equivalent for a condo?

Anyway, Florida is really high right now in general but there are some pockets where you can get a decent sized almost beachfront house for 500kish. 

You've probably heard of big Landlords losing property, but only because they were flagrantly violating Fair Housing, running a slum, or otherwise violating the law in an egregious manner.

We added value by re-doing the whole house, installed vinyl floorings, rebuilt 2 and a half bathrooms, re-painted the whole house, replaced all the hardware in the house, installed new lighting, ceiling fans, re-painted the kitchen, and completely remodeled the upstairs.

You don't need to have an agent (although that would be great, but it's not a good use of their time until you are pre-approved and ready) because there are Open Houses every weekend in every market.

.- I will also supervise the construction and other related activities (but will NOT build the house myself) .- Let's assume the total cost of construction is 200K (or 150K if it's a manufactured/mobile home).My Question would thus be- Can the STR tax loophole strategy allow me to offset 60% of the 200K amount that I paid towards construction of the home, (or 60% of 150K if it's a Manufactured home)Any success stories with this kind of approach?  

Also we are aging and not feeling great physically working on houses.