An attorney may originate a loan in connection as ancillary services in connection with their legal representation, in other words, if they are selling properties out of a trust they administer for a client they may originate a financing agreement.Another twist is that a real estate broker in CA may be involved in a seller finance agreement without being a mortgage broker but I believe they will still have the registration number.

The sales are administered by the county.

The county Housing Authority (administers Section 8) in my area require the tenant to pay 30% of their income toward rent (the balance paid by the voucher).

They administer estates in such situations and sell the property after probate with the money going to the care of the heir/beneficiary, if she is incapactitated.

Lenders sell the loan and may retain the servicing rights, that pays them to administer the loan, this provides fee income without having to take the long term interest rate risk of a loan with a fixed rate.To vet mortgage brokers, or any lender, ask Realtors what local lender they prefer to work with.

I've been administering hotels in my family since 2007.

In this case the escrow funds should remain and then be administered by the new manager.

Start a Trust, you administer and the child can be the beneficiary.

People use them, but Real Estate is already tax-efficient as-is if you're not wholesaleing and the IRA will prevent you from using those funds until age 59 1/2, plus they can be expensive to administer since they are not common.As for the 401(k), I typically advise to contribute up to what your company will match. 

Your residency and actions of administering the LLC in any way create California nexus.