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?

Obviously, there are a number of factors such as which financial institution you're dealing with, your details, and the property that change these loan factors around.

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

I do not factor vacancies ever, I manage myself and it is a non factor.  

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.