I am a landlord in MA and recently had tenants move out and cause damages to my property (soot all over the walls + holes which required extensive cleaning, patching and re-painting).I did have a security deposit, but unfortunately, I was not aware of the very specific security deposit laws in MA. 

Both are good services.

Offer your services as a financial analyst on a consulting basis. 

Make sure he doesn't have a written agreement to provide service.

The key in my opnion is a great dependable support staff, namely your cleaning service.

The USGS has monitoring points for those concerned about river and stream levels, and the National Weather Service also provides graphs using data from the USGS.

GIvIng an industrIal property a clean bIll of health can be quIte valuable when it comes time to sell it.

There may be sites or services that will give you a vacancy number.

It's like asking him to pick up your dry cleaning. 

Also, other properties that I love in booming cities are maxi-storage or light industrial buildings that contractors or service providers can call home for their businesses.