If continuing at that rate, it would be down to 4.2% by the end of 2016 - and only breached that level in the hot '99/2000 market, which is the lowest unemployment watermark for almost all areas.

When it's time for a new lease, I update the dates and anything else that has changed, put a "SAMPLE" watermark on it, and print everything except the signature page to a PDF. 

Someone suggested in a previous post to watermark your photos.

You may want to pull the carpet back in areas to see if the dog peed on it (you will see water marks on the bottom of the fiberglass.

I once had to sand an area about 1x2ft to remove a water mark. ( I'll never use water based floor finish again ) Anyway, I just restained it, painted in the grout lines and varnished it.

Would it expand or have water marks?

You can also structure the note by providing them a greater share of profits should you happen to (A) sell the property above a certain level or (B) refinance above an agreed upon high water mark. 

If you see a roof in need of replacing, mold, rusting HVAC, cracked foundations (you can tell by cracks along the door frame), watermarks along ceilings and walls, etc.

Adding on to @Peter Dascoulias II's comment, watermark your photos with your phone number so no one else can use them.

To Meyer, that was most likely the high-water mark.