I'm trying to understand how they collect data so as to develop the best comping practices.

Fortunately I have all the standard contingencies.I also question what is a fair price for insurance.  

Folks just need to understand things never stay the same..

IMHO the key is having an agent on the buy side who understands the process and can make some magic happen for you. 

Both offer unique advantages, but understanding the trade-offs is crucial for making the right decision.

It took new construction costs from $800-2500 down to $325 / SF and instead of 2 years it can be done in 8-12 months (design, permits, fabrication, shipping, and erection) depending on how much homeowners customized the standard plans. 

ADU’s are a very popular in expensive areas, and I understand they add equity value as well.

You don't need to know everything to get started; you need a foundation to build on, and the rest will come through experience and then refining your education.You can build a basic understanding of investing in 3-6 months.

Start networking with local agents and investors for insights, and talk to a lender to get pre-approved to understand your budget.

Every system you try will have flaws, or you may salivate over a feature that appears in other software.Some familiar names are mentioned frequently: Stessa, Apartments.com, RentRedi, TenantCloud, Innago, RentManager, Avail, Rentec Direct, Doorloop, etc.I recommend conducting thorough research on each app online to understand their offerings, pricing, etc.