I use Dropbox for electronic storage which comes with a scanner in the phone app, so I can scan immediately on the go and then ditch the paper.

Once the rehab is done, I have all the receipts entered into quickbooks by my CPA's assistant and then I have an electronic means to see the profitablity of each project as each one is assigned a class in quickbooks.It has been suggested to me by others to also keep a log/talley of every expense by simply writing each item down in a log book so at any given time, I can see how much has been spent on each project.

I agree with @Mehran Kamari , with electronic communication, there is virtually no reason your accountant has to be in your location.

It is best to get the cash out of the hands of the manager and have a clear electronic record of who pays.

After that I slammed every nickel I could get my hands on toward paying of my mortgages, STARTING WITH THE LOWEST BALANCE, not necessarily the highest interest rate.I also did without things that a lot of people thought were absolutely NECESSARY; things like new cars, cable TV, the latest and greatest electronic thingies like big screens, walkmans, funny ringtones on my cell phone (I didn't have a cell phone until '95) and crap like that.

Place has an entirely open window, the bank’s electronic lock doesn’t do a whole lot when it’s wide open. 

@Danae Meurer  Locks- Kwikset Smartcode LeverGarage Door- LAYKOR Keyless Electronic Digital Door Lock YL-99Thermostat- Know everyone says Nest.

But, if that is the case, you can just use an electronic signature fro Dotloop or Docusign.

Consumers wait to update electronic gadgets when the economy is down.

@Steven Jefferson, I would use the opportunity to get a separate water meter and/or Electronic Metering for each unit.