You can get a commercial loan to cover multiple properties in an Umbrella or Blanket loan.

Landlord insurance and umbrella insurance are must-have. 

If you are looking for asset protection get a few quotes for umbrella insurance.

Just buy a cheap umbrella policy. 

For liability protection, I added an umbrella policy.

Insurance would cover it, I would pay the deductible, and no assets would be lost.If you are in an area like San Diego where people are more likely to sue, a judge is more likely to find you guilty, and the payout is likely to be higher, then you may consider an umbrella insurance policy.

Keep your property in good repair, have landlord/homeowner insurance, and get an umbrella liability policy. 

Others might say to look into an umbrella insurance policy instead. 

My 2 centsWhy would you NOT get a liability umbrella?

If it is only onesie twosie type transactions on a few low cost (under a mill total, say) units, then I'd tend to sway towards holding in your own name with an umbrella insurance policy.Also, flips are a different animal and have different tax implications ...