So I do day trading at home - it uses to be an apartment but it was a good year and I bought a house outright.Can I deduct the space I utilize in my home as a business expense on next year's taxes?

Is owner financing common with commercial real estate?

I rent out my current home with my two brothers and I pay $350 in rent (excluding utilities) so I average out to $450 a month.

@Dmitriy Fomichenko may have some good suggestions on the best way to correctly utilize your SDIRA

I actually think certain types can be decent investments IF you do the homework and read the docs and know what you're buying into.I personally avoid high rises (too much cap ex and high maintenance costs mean poor return), poorly maintained buildings with lots of deferred maintenance, avoid non-warrantable buildings or complexes (hard to finance), I prefer townhouses or 4plex style condos with only one common wall and nobody above or below, that limits neighbor and tenant drama. 

I have a house that I was going to have the walls redone a few years back before a new tenant came in - the walls were heavy textured in kind of a Spanish stucco style, which is not common where I am nor really desirable.

We are utilizing a number of different mediums in our business currently, I was just curious to see what others are doing at the moment and what the returns are. 

These expenses are including, utilities if you pay for them, maintenance, yard care, pest control, insurance, advertising, property manager etc etc.these often come up to well over $3000 per door - depending on the market..$750. sounds to low for all expenses.

Here is a summary of the deal:Purchase Price: $500kDown Payment (using FHA): 3.5% - $17,500Property Taxes: $4,500Insurance: $900Total monthly payment (PITI + PMI) = $3,325/monthThe units are currently being rented out at $1,000/month, so essentially if I live in one of the units my payment each month would be ~$325, not including utilities of course.

The only reference I have is for my duplex and triplex properties in CO; sewage, water, garbage and share common area fees paid by me; tenant pays gas and electric.