Some expenses are capital expenditures and rules apply differently, depreciation was big deduction, but just make sure deduct building and not land.

Now a stick built geodesic dome would be, just an unusual kind of home.That could be the main reason for lenders balking at the expenditure.

I did use the rental property calculator on here and that number includes putting 5% in repairs, vacancy and capital expenditures.

Capital Expenditures or CapEx - This is one that causes much analysis paralysis.

Sure I'll make more off 2 tenants over 1, but I was just curious if the added expenditures of the additional tenant might begin to make the additional cash flower seem less worthwhile.I will be managing my own du/tri plex for now... that will be a piece of cake.

@Austin Willman of course believes that his "investment in education" was a wise expenditure ...

Snow expenditures of plowing was ok but salting was triple.!

Right now if you plug them into the Leashold improvements line under Capital Expenditures it will be amortized over XX number of years.

This is more challenging with residential properties (1-4 units) and small multi-units (5-10) as the owners of such properties frequently do not operate them as a business and have less than stellar record keeping.Once your have your Net Operating Income (NOI), deducting your debt service and capital reserves (monies set aside for future capital expenditures: i.e. new roof, windows, hot water tank, etc) leaves you with your cash-flow before taxes (CFBT).As part of your education, you can take real life properties being offered for sale and conduct the paper exercise of anaylising their performance. 

However, because of the very unique aspects of their particular profession, the Service (and Courts)  can accept this as an expenditure directly related to business activities.Below is an article excerpt demonstrating this (you can easily find others):"In 1994, one stripper's attempt to get more tips led her to undergo breast augmentation surgery.