I currently have about $70k in equity from other properties and access to another $30k in cash.Coming up with the other $300k for the temporary flip is the challenge.The online auction keeps getting relisted and is quite the tease.

They give you unlimited access to their database of phone numbers and emails for a flat fee (~$1k per year).

Since I have ready access to a laptop and desktop, I use the computers as I can't use the iPhone to follow up on my discussions due to this change. 

Is there a way to access this from public records without knowing the address of the properties? 

Sqft should be +/- 20%, age +/-10 years (unless major effective age improvements), construction and area similar, $/sqft adjustments of about 25% the dollar per sqft range etc.

But if you were selling a property in the US and wanted to purchase and improve a less expensive property then you could do a process called an improvement exchange. 

I put a locker in her door to make her happy after she moved in my house, but I keep another key for her room, so I am also able to access her room when she is not in the room (I do not do that, but if I want, I can).

You'd have to make your own calculations on what improvements will actually go towards getting a higher appraisal and which are wasteful.  

Yes, the average investor has access to debit and equity like they never did before.

I bit usual layout as its set back from the street with its own access lane and backs to a large apartment building and has taller wood fencing, but the owner has lived there for 12 years and is 73 now and tired of playing landlord with his neighbors/tenants - he has the usual tenant adventures going on right now, such as an eviction and probably isn't a thorough tenant screener.