I'm now considering expanding my real estate ventures into building custom homes, but I know this is an entirely different beast between the required capital, learning curve, time committment, etc. 

There's other dialers out there that's more custom tailored to organizing calls, lead follow-up plus much more cost effective and honest with a live customer service line.

I spent 5 years tutoring in a 'hood. I

We have a Chicago general contracting business, and handling the field operations is a ridiculously heavy lift.As far as finding customers I think you'll have some good success with gorillia marking at some of the local investor meetups. 

I'm a Project Manager at an Architectural Firm specializing in Custom High-End Homes. 

Every little thing in the project should be in writing, even down to the door stops :-) See my tile spec sheet below ...Two problems with your post though - 1) In my experience, most problems come from the customer changing their minds constantly.

Are you looking for custom, semi-custom or spec homes?

But I need a portal where I can do the following -Customize the tenant application  ( Cozy does not  allow me to customize)- Have tenant Upload Pay stubs, DL, etc. 

This is not only my experience, but when you call VRBO or Airbnb customer service, they will tell you the same thing.  

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