Where should I cut corners, and where should I not.?

The roofer incorrectly cut the internal roof drains while putting on a new roof, we consequently had four separate commercial office suites flood out.

I've flipped most of my houses with hard money and had someone put down the cash for me and just be a lien holder so you have an agreement with them separately that if something happens to you or the property, that they get their cut first.

I want to at least cut this in half. 

I do have a question, i work a 9-5 and since i have no kids or an spouse, uncle sam takes a huge cut out of my paycheck each month (2K).

They also tend to stay many years, which cuts down on your biggest expense, which is turn over. 

Your debt service(mortgage), taxes, insurance, maintenance (cutting lawn,marketing,legal,etc) management cost... etc are $1000 but you rent it for $800, you have to pay the $200 difference out of pocket each month. 99% of the time this means you bought a bad investment.

If it would, then I'd not cut off the nose to spite the face.In general the process of splitting the parcel successfully is going to depend on whether or not your parcel is large enough to be split and both of the resulting new lots meet the city's ordinances regarding lot size, road frontage, etc.  

Today I drove my and noticed someone cutting the grass.

Points may also be treated differently between a primary residence and a rental.The $100k you are referring to is related to home equity indebtedness (home equity loan, HELOC) and that was removed with the Tax Cuts and Jobs Act.