The only additional cost was my time to create individual websites for each property.One added note: my father repeatedly stated there are more buyers for Chevys than Caddies.

I recently installed a pylon sign board for my restaurant in Toronto from New Style Signs which was quite attractive..Seems like people are noticing the shop frequently .

I explain this from the beginning and repeat it when signing a lease. 

If your quality of tenant is low, section 8, you can expect them to repeat every time a tenant drags a piece of furniture in off the street. 

There is however a local area code of 972 and yes, I have had to repeat my area code since moving here to make sure local businesses don't input the wrong phone number on my account.

Repeat business is certainly desirable.They didn't leave the place trashed, but certainly dirty in an above par way. 

The twin forces of special/higher taxes for landlords, combined with the frequent discussion of rent control, make this a challenging place to do business.These issues already caused Central Falls to declare bankruptcy and now word is that Warwick is in pretty bad shape.

You would do well in reading the books regarding that matter here on BiggerPockets:      Buy, Rehab, Rent, Refinance, Repeat by David Green.     

Thinking of building another, living in it for a year then renting/repeat Is that considered house hacking?

In my county, you can apply for government assistance to remediate lead paint if you have a lease with someone that has a child 6 or under or that has a frequent visitor child 6 or under.