Depending on how you set up your mailers, it could take a good amount of time to create & mail these yourself, OR you could use an automatic mailer service like Open Letter Marketing to do everything for you!

And to tag onto what Tom said...a property in DC owned by an LLC is automatically subject to rent control.

Is your rent withdrawn automatically from your account, or do you initiate the monthly payments yourself? 

An automatic drivable lawn mower so dad doesnt have to push that damn lawn mower in the middle of the jungles in Suriname... crab legs every night... no more looking into my wallet to see if I can afford this can of tuna, eating healthy, travel... finally building my army of robotic minions so I can take over this damn planet, overthrow the orange baboon and become the black baboon so I can stop pretending to be the funny nice guy here on the forums and  become the evil little overlord supreme being 6th element and take my rightful place ruling this little mudball!

Just because you have their info, doesn’t automatically mean you can do a credit check on them. 

For example, if they are a sex offender or they just got out of prison two weeks ago for murder, that would be an automatic denial.

It can automatically add on late rent fees4.

Thats something that I am thinking about but more inclined towards not adding the washer drier.I was reading this book "Crushing it in apartment investing" and the author mentioned about adding water reducing faucets or motion detecting bulbs which will be turned off automatically.

Keep in mind, that person's offer is automatically lower than the same offer with someone not using an agent so compensate your offer accordingly. 

Seller financing does not automatically make a deal good, it still has to pencil out.