The menards contractor card is decent too.

The key is always to have leverage and pay upon completion of agreed upon milestone such as end of demolition, upon successfully passing of rough inspection, upon kitchen installation, upon successful passing of final inspection, upon completion of final walk through and touch up list.You should specify these milestone in the contract under "payment schedule" so there are no surprises.Always keep a significant amount 20-30% as a final payment upon completion of final touch up list.

If you are pursuing a residential (1-4 unit) or small commercial (5-8 unit), I would stick to the standard agreement, perhaps with my own schedule on a larger property.

Hi @Nico Cruz, if you are looking to have more success with scheduling showings, identifying the right properties and actually going under contract when the time comes, I recommend working with a buyer's agent that is investor focused that can assist you in doing so.

I'll echo @Alyson Gordon's that the bonus depreciable items (less than 20 years depreciation schedule) will most likely be 15 to 20% of the 80K. 

And make sure your CPA hits the button for every possible sub schedule.   

Are you full timers borrowing against your Schedule E income?

I assume you want to earn this for yourself by doing this work, but it is work.A good rule of thumb is vacancy, expenses and capital take about 50% of the gross scheduled rents.

JeffIf you do a pre-move out inspection and can identify the non-cleaning items (paint, drywall, etc), then see if you can schedule that sometime prior to the actual move out/in.

You can run the amortization schedule an see the expected principal contribution.Take a close look at the reason the buyer is going with seller financing, often it's a combination of issues, if a clear understanding made with the buyer as to their additional responsibilities in solving their ability to obtain future financing your deal may likely fail.