they need one of those and their license needs to be mentioned on the first page of their website.

I have kicked the tires with a few small investments in both long-term and vacation rentals offered on the website over the last few months. 

Here's a https://www.irs.gov/businesses/cost-segregation-audit-technique-guide-chapter-4-principal-elements-of-a-quality-cost-segregation-study-and-report to the IRS website noting specific items that are included in the cost segregation study report.

I find market price with a combo of that website and looking at what other LL's are asking for on Facebook Marketplace.

Section 8 rents for the entire country by locality are on the HUD website, HUDuser.org look for Fair Market Rent (FMR) there. 

For anyone that hasn't used Doorvest, it's a simple website where you put a $1000 deposit and they send you curated list of houses they buy that need renovation, renovate, and then tell you a final purchase price along with guaranteeing things such as first year rent will be 100% covered by them even if they don't find tenants.

Also what platform(s) are you using to create and host your website (wix, wordpress, squarespace, etc)?

Big difference It’s like seeing an ad pop up on google that says Google sponsored ad - it doesn’t mean Google recommends them it means they are paying GoogleThe same holds true for self directed ira custodians and others who may have on their website some names “sponsors” - a sponsor isan organization that pays a fee in return for advertising.

What are the go-to resources or websites you use to estimate insurance costs (especially for rental properties) ?

I found your website, LinkedIn, and facebook page.