Sounds like you're aiming to make some type of algorithm or software that tries to eliminate the need of competent real estate people utilizing their experience in markets they are very familiar with..........Didn't Zillow lose about $500 Million flipping houses using this exact type of model? 

Prime Day has a tendency to cause some difficulties due to the massive number of items with many different sales algorithms.

I use DIY cost segregation algorithm-based studies.

Many websites were relying on Google search for most of their traffic and lost 70-90% of there traffic when Google updated their algorithm. 

One program in particular can finance 90% of purchase + 100% of rehab for a first-time investor, but the property needs to be a good fit for their algorithm, and the loan amount must exceed $100k.

Using stabilized property algorithm to set value ignores the primary source of return.  

For most people high debt will eliminate a high credit score (wealthiest excluded).3) FICO takes into account credit obligations that were not satisfied (I.e. are in default).  4) the entire purpose of FICO is to use an algorithm to determine likelihood that the person will pay future debt obligations.5) a good FICO provides the potential stick used to collect moneys owed.  

I now get monthly emails with updates to my home's estimated value, along with metrics such as how much rental income the property could generate.Their pricing algorithm is a blackbox to me, so I can't endorse the product.

The computer algorithms provided by Zillow, Rentometer, and others are good for reviewing a general market, but you shouldn't rely on them to evaluate a specific house.

Be careful with free sites, they only have a couple months of actual data and then project the rest with an algorithm tool.