Transferring a property into a living trust does not typically affect its assessed value. In fact, California law explicitly states that property taxes will not be reassessed if a house is transferred into a revocable trust 3.
Amending a trust deed is process that should be treated as requiring careful planning, consideration and intentionality. Indeed, unintended (and undesirable) consequences can flow from a purported trust amendment that has been undertaken with such consideration, such as a resettlement of the trust.
Real estate can be transferred into a trust by a deed that transfers title from the grantor to the name of the trust. Under California law, a Preliminary Change of Ownership Report must be filed simultaneously with the deed at the county recorder's office in the county where the real property is situated.
You must choose the trust you want then draft and notarize a trust deed, record it and notify the relevant parties. The process is similar for all types of property.
Here is the rough outline: Select the trust that is best suited to your needs, such as a revocable living trust. Draft a trust deed and have it notarized so that it is legally binding. Record the deed at the county recorder's office. Notify the relevant parties, such as your mortgage lender and insurance provider.
One disadvantage of placing your house in a trust is the loss of direct ownership. Transferring your property to a revocable living trust makes the trust the legal owner. While you retain control as the trustee, this change in ownership may affect your ability to mortgage or refinance the property.