other items that you have listed since you emailed me that you are asking about:Internet cost will either be $57 a month with Texas wireless if you are in line with one of their towers or Exceed satellite for $150 for 30 gigs of download.As to the Airstream you mentioned above, this one is rented about 1/2 mile from my place here in Wimberley. 

I have been guilty of staying cheap in areas that were cheap...never buy properties in bad area is the best lesson...I had  camera installed and saw thief cut the main power line and steal the cameras in Joliet and police reports and police is waste of time and insurance can be expensive...I have had simplisafe wireless alarm system that is great for identifying who comes in and leaves..because you can assign codes to each worker.if you could have a combo system of simplisafe  or another wireless system with a camera system combo that captures who is going in and out might be your best option...you need alarm system with video capture because we still have people leaving garbage in parking lot that alarms can't prevent...I have not come across anything better that has active alarm system with videos.

Paul MN, I'd like to add wireless doorbell options for tenants + cameras for security in front/back/garage area. 

Get a wireless, monitored alarm system with motion detector.

I have my netbook with me, but rather than pay for wireless access, I've just used the iPhone.

As for the phrase "tenant free", I'm a little late to the response because This is my first week with the blog, but I would think it means "rental income without needing it".Examples are charging to use the following:Washer and dryerGarageStorage-------------------Here are a few I've been thinking about:1) setting up a strong wireless modem and charging $15 a month for the access code which changes every month.2) offering basic cable kind of like an HAO does and then adding it into their rent.3) redbox so that tenants can rent DVDs and games.

The "coconut wireless" (communication network) is very fast acting.There is a total of 4 active single family home listings on the MLS today for less than $190,000 on Oahu.

Side bonus, when I mow or do maintenance, the wireless router/modem allows me full internet access on my phone without using 4G Data to death.  

I can get a regular alarm system installed for only $75 for wireless connection and then $19.95 monthly.

I'm looking for the best place to get wireless smoke detectors.