I've heard that sometimes units are painted over and so there is residual amounts that need to be remediated but when the crews start cleaning the levels get worse and it becomes a full gut instead of just a cleaning.

If you want residual income and not sell with no hassles/maintenance- look into a mortgage wrap .

Smoke and/or grease residue from smoking or cooking would also not be normal wear and tear. 

Hello, Im starting off in real estate and thought wholesaling might be a good idea but, that does not provide me with the residual income that I need.

Here are a few options:1)HELOC for repairs and flip it for profit2)HELOC for more rentals and hold current to pay off HELOC3)Seller finance to reduce tax obligation and receive. a large enough initial downpayment from buyer to use FHA for a primary4) Hold and use cashflow with the specific intent to invest all residual income5) Sell and take "Capital Gains" hit but purchase another property to help offset it6) Transfer deed to an LLC to remove it from Grandma's name (this opens another door of possibilities but may trigger tax increase due to transfer of ownership)I can go on, and others with different approaches can add to this list as well.

Residual Cash, Dividend Income, Interest Income, Net Income, Net Operating Income, etc.

Of note when I assembled them originally, I used construction adhesive on all connecting joints and added an extra trim head cabinet screw on large pieces to really hold them together.

When discussing Allure, I wish we could refer to WHICH Allure flooring we mean.Allure Ultra or the regular Allure with the adhesive.

The goal is enough residual income to leave our current careers and invest full time 

I'm not opposed to a flip, but I like the idea of residual income.