Does Batch or Propstream have better property/list data?

None in Mesa specifically, but I think I can help you.The best place to start researching market data is strinsights.com.

I wouldn’t trust your own comps for 100% accuracy as platforms like Zillow syndicate their data from our MLS and often are geographically off and use algorithms that don’t understand the block by block, apples to apples nature of comparisons. 

Having all your data in one place is critical to underwriting a deal.

So, obtain the underlying data and analyze it to understand it.

I learned throughout ten years as a data scientist that most of the world doesn’t care about your r-squared value.

Gather data that can help you make an educated decision. 

Huntsville AL holding up in the slowdown.HOME > DATA & ANALYSIS > 5 HOUSING MARKETS THAT ARE HOLDING UP IN THE SLOWDOWNData & AnalysisBUILDER5 HOUSING MARKETS THAT ARE HOLDING UP IN THE SLOWDOWNBased on unsold inventory, these five markets are staying strong amid the cooling environment.By Leah DraffenThe cooling market is causing sales prices to drop, incentives to be offered, and unsold inventory to stack up throughout the U.S.

I would see how much data I can get in regards to people searching for electric ports for charging their cars.

@Don Johnson  In general, the East side of SLC usually has the best appreciation for single family homes (neighborhoods like Sugarhouse, the Aves, East Millcreek, and anything along the East bench usually has good appreciation...but they also tend to be expensive properties to buy...).  ...everyone wants to live in those areas, but there's a finite number of houses to go around, and very few new single family homes are being built in those areas, so it's a fairly straightforward issue of low supply and high demand.However, I think I saw a stat recently that showed that some West side areas like Taylorsville had the highest appreciation in SLC last year (even higher than the East side neighborhoods)--my theory is that the East side has become so expensive, that most "normal" buyers (that is, people with fairly typical incomes) cannot afford the East side anymore, and are therefore being pushed toward West side areas like Taylorsville, driving up prices in those areas.... that's just my hunch (I don't have any data to back it up).