I can generate some anecdotal examples, but would really like to see a professional study, existing court case, etc.

Also Lance Edwards Multifamily Success Home Study SystemJust google them and you will see their websites.

I'm a beginner to the BRRRR strategy and currently studying up on it.

Will just flat out raise my hand and say I'm new... but have been studying for years on SS (have done residential flips/rentals), now or never to actually s or get off the pot haha.

Study the market.

That will give you some investment experience and then from there if you want to invest OOS you need to choose one market and study it in depth.

Get a cost seg study done.Once you convert your primary residence into a rental, you can get a new cost seg study done and take bonus depreciation to offset the new rental income.5.

To begin investing in real estate, learn first, set financial goals, analyze finances, study markets, make friends in the field, get a loan, start with small properties, check all details, plan how to manage them, and choose renters carefully.

Had not done a cost segregation study when I purchased these two homes, but understand you can calculate a value  to write off so you are not depreciating two roofs...using salvage value or producer price index.

Tenant PotentialRental Market: Study local rent prices to understand what you can charge.