They also have amazing customer service which makes the monthly payment model worth it for me.

During the mortgage crisis i worked as a loan officer for a very short period , in that time frame i saw how shady that part of the business was, customers where signing documents blind and for that very reason most lost their homes, everyone was taking full advantage of the situation and trying to get a wealthy as fast as possible before the party was over.What i dont like working with loan brokers/officers is that there is a lot of jargon in their paper work that they only understand , i wouldnt want to get stuck in bad mortgage deal .

The parts behind the paywall will allow us to focus on our paying customer - the LPs.

As a licensed mortgage broker I'm further compliantly (and confidently) able to provide mortgage insight and direct the customer to the most suitable lending partner or program.  

A contractor isnt there to finance the customers project . 

Zillow will also offer climate history of a property alongside custom tailored insurance policies and carriers. 

If the tool has merit, then build it for yourself, and it will pay for itself on that basis alone.If it will not pay for itself (& time counts as a cost) when the only customer is yourself, it's probably been done a thousand times, and/or isn't as useful as you think. 

@Shea Spinelli If you PM me, I can send you a sample XL spreadsheet that you can customize that we use to apportion the expenses among the Tenants ..

I know that I can go in, in either platform, and refund for days as needed without involving the "customer service" people.

Our title companies customer service departments are second to none all of this was free for me..