That being said, based on Daniel's comments, this may not be a low hanging fruit, but I suspect that for the experienced property manager there would be money to be made here. 

Now that's not to say you can't go for low hanging fruit (long tail keywords) but the world of SEO is about getting good traffic more so than being number one on Google.  

I can see this being fruitful and less expensive than trying to mail out letters.

Keep your hand in a lot of baskets while you're figuring things out! 

It will be low hanging fruit in the hands of an ambulance chaser to prove there was owner neglect if you decide one day to "tell the tenants they need to go to the shed and fire up the snow blower"What do you do when the snow blower is out of gas?

Andrew Carnegie, is quoted as saying "The way to become rich is to put all your eggs in one basket and then watch that basket." 

Don't worry about all your goals at one time hard to keep all the puppies in the basket.

Essentially, if there is something negative occurring in one of the regions where you have property, you don't have all your eggs in one basket.- You can keep your 9-5.

That will probably take more cash to get in now, but may provide more fruit later.

@Marian Smith I just finished renovations on my current house and my wife would like to enjoy the fruits of my labor for a few years before we sell.