Hi All,While I'm relatively new to the New York real estate investment game, I've been a licensed NY/NJ attorney dealing with real estate law (mostly representing buyers/sellers on residential and commercial deals and representing lenders to close loans). 

. $4451 - $3900 = $541 rent lossPITI on new primary + 541) / monthly W2 income = DTI(Although in the real world this math is run per property... but the aggregate numbers would be the same.)The 75% rule applies to any property you've acquired recently (or put into rental use recently) such that it doesn't yet show up on your tax returns or was acquired midway through the year such that the info on your Schedule E wouldn't be representative of ongoing income and expenses).For a property that shows up on your prior year's tax filing, we analyze the Schedule E the math goes like this:Net Sch E income or loss + depreciation + amortization + HOA dues + mortgage interest + MI + homeowners insurance = net income(net income / 12) = monthly incomeMonthly income - PITI/HOA = rent income or lossThere's one more add-back that can go on the list above... if you've had unusual one-time expenses during the prior year (major renovations, disaster losses... pipe burst, flooding, fire) you can add those back.If the property was out of service for a period of time due to the above unusual expense, but has been re-rented, you can sometimes make a case for going back to the 75% rule.I should add that this goes for properties that show up on your personal tax return (whether titled to you or an LLC).

If your state allows it, I would hire a Realtor and just have them represent both of you.

I'm reviewing the numbers on a new rental property listing 1 day ago, I was first to call, first to visit this a.m.I want to call a very informed local buyer's agent to represent me, but I'm not ready to make an offer.

Also, the projects still exist, your one sample is not representative of the entire population and has little meaning.

If you know what you are doing then you don't need a Realtor to represent you as a buyer. 

B***** and D**** are the other partners that own the other share of the Rv Park.I am really uncertain at this point that I want the guy to be representing me.

He's the best and he'll represent you on the buying side while most brokers representing the seller will try to sell you something irrespective of whether it fulfils your needs.

This is what is on the contract:Also, the realtor represents them in the rental/sale of the home.

Each one of the sales to a different buyer represents a distinct and separate 1013 exchange.