The commercial property would be a great addition of another 4 units, but will also provide a retail opportunity for us to open a small building material retailer.

If the unit has these:Assume replacement every 10 years:Water heater - $900Refrigerator - $900Range - $900Dishwasher - $600Clothes washer/dryer - $1000 combinedEvery 15 years:Furnace - $2900Central air - $29003 BR SFR Flat Roof - $2100 + $300 per 3 years to coat itI annually plan for an additional $1,500 of miscellaneous maintenance expenses and $800 for capital improvements.You could probably use something like this to estimate your per-unit costs as some units might not have all the same features.  

I am will to split profit in addition to paying a percentage on the loan amount.  

The Trustee sales you see shown on the site, at least in Maryland, are merely an additional form of advertisement.

I am living in an owner occupied triplex, with rents of $800/month and other tenant pays $975/month.Would this therefor add an additional $975 + $800 x 12 = $21,300 to my "income" for calculating this write off?

So, I've been looking at the site more for additional tips, tricks and anything I can learn. 

The next property I used the credit on was also shut down because of other requirements that "pop up" unexpectedly in order for them not to lend.I have asked several times for a refund of my money and all they have offered was an additional year's subscription.

Additionally, you may have to give a right of first refusal to the evicted tenant(s) to move back in if the re-rental is done within two years.  

Please talk to a local CPA.In addition regarding the 2nd question if you can re-sale the tax deed certificate. 

It would just be outside pictures as I will mostly use this as research for an additional source in deciding whether to buy a property or not.