Does each of these cell need a separate checking account for a reasonably  good asset protection?

We operate in a broken system that is ripe for abuse and fails to protect us.

The best strategy depends on your goals, but here’s a breakdown:Selling outright would result in paying capital gains tax and depreciation recapture, but since the appreciation is minimal, the tax impact may be relatively low.Gifting the property to your son could potentially allow him to sell it with a lower tax rate, but since he hasn't used it as a primary residence, he won’t qualify for the exclusion of capital gains tax on a primary residence, and you'd need to account for gift tax implications.1031 exchange could defer taxes, but you would need to purchase a like-kind property of equal or greater value and meet all the IRS requirements.

Find a knowledgeable and trustworthy broker in your market that can shop amongst the various providers and find you the best deal while still making sure you have the protection you need.

A good PM can help protect you from a bad decision.

If you are closing on a property that you will reside in, can you close it in a Trust, or do you have to close it in your own name, and then later transfer it into a Trust? 

Protect yourself.Our loan documentation package includes several handwritten forms that the borrower must complete at various points during escrow to establish the intended use of the funds.

My question is, can I do a study on a home that is currently my primary residence and not yet a rental but will become a rental and I use the paper loss in the future when I need it but have captured the 100% bonus depreciation by doing the cost segregation study in 2022?

Investment Info:Single-family residence buy & hold investment.

You can acquire a primary residence as low as 3.5% FHA or 3%-5% for conventional.