For example, say I have a foreclosure, or expired listing lead that I would like to find accurate phone numbers for for prospecting.

This ensures you can provide them with a clear and accurate scope of work.

Reliability of Regrid Zoning InformationIs the zoning data provided by Regrid accurate and up-to-date for development planning?

One workaround could be keeping a separate spreadsheet to track your adjusted tax basis accurately and only using Stessa for operational insights.You could also reach out to a cpa and see if they have a specific recommendation for software to use.  

FWIW, I'm going to base this off a 1,500 SF single family new build, but I'll predict the build cost will be a little over $200/SF.

Additionally, be sure to have an accurate ledger and your signed lease agreement.

I know that ideally, I reach out to my broker or any other reputable insurance provider to get a more accurate estimate.

So yeah, your 20%+ is much more accurate. 

As important as due diligence, analysis, knowledge of the property type, track record of the syndicator, correctly predicting economic trends, and timing is, the number 1 way to avoid a devastating loss is NEVER INVEST MORE THAN 10% OF YOUR INVESTABLE ASSETS IN ANY ONE DEAL.  

Assuming your numbers are accurate, I'm estimating your monthly "rent" or your contribution to the monthly expenses will be about $2,000.