Google search gives me these super wide ranges and mostly talking about adding a bedroom in a SFH, which I'm not sure if applicable to this situation of "moving/subtracting a bedroom from one unit and add it to another unit in a duplex". 

Software is a common question on BiggerPockets.

If you prefer a software, we can discuss that.That being said, if you're interested in hiring an REI-savvy bookkeeper, I'm happy to introduce you to a few candidates so you can interview them.If you're interested in continuing to be your own bookkeeper, I suggest joining the FB group I mentioned so you can get your questions answered as you're working through your books.Also, I'm happy to help if/when you have specific questions.

it's probably just a matter of casting a wider net in terms of applications. 

Are the current Property Management softwares outdated?

In most cases, they learn of the transaction only when a Certificate of Occupancy (CO) application or a permit is submitted for repairs or inspections. 3.

I'd like to know other landlords' experience of the application, placement, inspection, and renewal process

I also want to start doing rent collection via software and apps like Baselane or apartments.com so l'm trying to figure out where to have two separate accounts or can I do everything under one account?

In this group, you get many exclusive benefits, including a discounted management fee rate of 9% on all properties managed by PPMG, plus the $250 application fee for new applications is waived.This property will be one of my highest cash-flowing properties.

For example, if you buy in a semi-rural area or suburban area the pool of applicants can be much smaller and with an increase in supply it creates a downward pressure on prices and higher days on market averages.