Hey James, I'm sure you've found a solution by now considering this post is 2 years old, but for future reference here is what I have found as far as software solutions for managing a handful of rehab projects at once.Construction/Rehabbing Specific PM Software vs Generic PM SoftwaresWhen choosing your software solutions you will need to decide if you prefer a house flipping software that is specifically built for managing a house flipping business or use a generic project management software.  

I am looking to purchase this investment duplex property which was built prior to 1940.

These sorts of shot-crete build homes are more standard than a bale or mud home but are still not standard like a stick built home.Geodesic domes are cool but harder to sell than a standard home.

These people are built to value add deals, you would have to look hard for these people in your market and probably pay them top end pricing to get your properties performing amazingly well!  

Realistically I know that we have built into our assumptions that there will be a certain amount of days in our properties that we will not be able to bill for (and we are well below that number), yet I still worry.

I have my eyes set on a plot of land near my home where there is high income and significant traffic in a rapidly growing area in Cedar Park, Texas (north of Austin). 

New built for starting out could be a bit challenging.

I provide all built in appliances but not the fridge unless it came with one and I don't care about it.

Furnishing it, years passing by commercial buildings built behind the townhouse.

I am a builder in NWA.I have given some investors opportunities to partner in builds with me.The deal structure is beneficial for investors because they get a newly built rental property for below retail price.Feel free to connect with me if it is something that would interest you.