Asset protection strategies come into play as well but its good to plan with the end in mind (use of entities, ILIT's irrevocable life ins trusts, friendly loans, trusts, etc).Hopefully thats a good high level overview.

All contracts, options, or other devices not based upon a substantial consideration, or that are otherwise employed to permit an unlicensed person to sell, lease, or let real estate, the beneficial title to which has not, in good faith, passed to such party for a substantial consideration, are hereby declared void and ineffective in all cases, suits, or proceedings had or taken under this chapter; however, this section shall not apply to irrevocable gifts, to unconditional contracts to purchase, or to options based upon a substantial consideration actually paid and not subject to any agreements to return or right of return reserved.

The assets of the revocable trust can also be subject to "elective share" claims upon death - which is a default percentage that a surviving spouse is entitled to receive from the deceased spouse's estate.Upon death, the trust become irrevocable and cannot be changed.  

For instance; I've had one recent trust litigation where the Grantor (person who set up the trust) retained the ability to control the property of the trust until death, voiding the irrevocable nature of the trust.

All contracts, options, or other devices not based upon a substantial consideration, or that are otherwise employed to permit an unlicensed person to sell, lease, or let real estate, the beneficial title to which has not, in good faith, passed to such party for a substantial consideration, are hereby declared void and ineffective in all cases, suits, or proceedings had or taken under this chapter; however, this section shall not apply to irrevocable gifts, to unconditional contracts to purchase, or to options based upon a substantial consideration actually paid and not subject to any agreements to return or right of return reserved.Note the PRESUMPTION of brokering and the person has to PROVE they are not. 

HelloI am the trustee for an irrevocable trust.

If you drop one of these, they will be irrevocably scuffed, marked, nicked, damaged, or even shattered.

All contracts, options, or other devices not based upon a substantial consideration, or that are otherwise employed to permit an unlicensed person to sell, lease, or let real estate, the beneficial title to which has not, in good faith, passed to such party for a substantial consideration, are hereby declared void and ineffective in all cases, suits, or proceedings had or taken under this chapter; however, this section shall not apply to irrevocable gifts, to unconditional contracts to purchase, or to options based upon a substantial consideration actually paid and not subject to any agreements to return or right of return reserved.Burden of proof is on the person to PROVE they are not acting as an unlicensed broker.

By trust, I presume you mean a revocable living trust as opposed to an irrevocable trust? 

Hello,I am the co-trustee and co-beneficiary of an irrevocable trust that my sister and I inherited when my mother passed.