Hover over them and a window pops out.

No big deal, jack it up, slide a new one in, set her back down (small house).

Some of the houses I would see had boarded up windows - one of the examples used in this BP post: Driving for Dollars Bible Part 1Ok, sorry I have no clue why inserting that link made my text blue up top.

When we replaced windows on a 1966 house with impact-windows recently, the installer had to remove 3-inch gashes in the plaster/sheetrock in order to affix them to the frame with metal strapping.  

Let’s look at the basic facts. 1) As is, the house doesn’t cash flow well compared to value and will only be worse when you refinance. 2) SFH values fluctuate with the market and can drop at any time if the market goes cold or worse. 3) You have a limited window to capture permanent tax savings and lock in profit. 4) A 1031 exchange is not a tax savings but rather a tax deferment. 5) MFU’s give you far more control over value and much higher cash flow returns than SFH.

Will the not allow vinyl replacement windows and things of that nature?  

That said a lot of people will peek in windows and walk around the property anyways.

Most of those rules need to be tossed out the window.

H: Tax in the US is a sliding scale, the more profit you make the higher the tax rate.

Front of home on the day I closed--> now with awnings removed and new siding on bay window.