San Diego Real Estate · Estate Planning Basics

Types of Trusts Explained: A San Diego Homeowner's Guide

By Natalie Joy Harris, REALTOR®, SRES  ·  October 1, 2026  ·  11 min read

"You should put your house in a trust" is advice almost every San Diego homeowner over 55 has heard at some point, usually without much explanation of what that actually means. There isn't just one kind of trust, and the type that's right for your neighbor's situation may not be right for yours. Here's a plain-English walk-through of the trusts that come up most often in estate planning, who tends to use each one, and a question I get asked constantly: does a trust change from revocable to irrevocable (or the other way around) when someone dies?

The Big Divide: Revocable vs. Irrevocable

Nearly every trust falls into one of two categories, and understanding this distinction makes everything else on this page easier to follow.

Revocable trusts

A revocable trust, often called a revocable living trust, can be changed, amended, or cancelled entirely by the person who created it (called the grantor, trustor, or settlor, depending on the document) at any time while they're alive and mentally competent. Because the grantor keeps full control, the assets inside a revocable trust are still legally considered theirs. That means no special asset protection and no special tax treatment while they're living. What it does offer is flexibility now and a smoother transition later.

Irrevocable trusts

An irrevocable trust generally cannot be changed once it's signed and funded, aside from limited exceptions available under California law. In exchange for giving up that control, the grantor also gives up legal ownership of the assets. That shift is precisely what unlocks the benefits irrevocable trusts are known for: protection from certain creditors, potential estate and gift tax advantages, and, in some cases, eligibility planning for long-term care programs.

The Most Common Types of Trusts

Revocable Living Trust

This is the trust most San Diego homeowners are referring to when they say "we have a trust." It holds title to your home and other assets while you're alive, with you typically serving as your own trustee, and it directs where everything goes when you're gone. The main draw for California homeowners is avoiding probate. California's simplified small-estate procedures generally apply only to modest estates, and most San Diego homes on their own exceed that threshold, so without a funded trust, your heirs are often looking at a court-supervised probate process that can take a year or more and cost a percentage of the estate's value. A revocable living trust lets your successor trustee step in and transfer property directly, without court involvement. It's commonly used by nearly any homeowner with real property, especially those who want to keep their estate private, out of probate court, and easy for their family to administer.

Irrevocable Life Insurance Trust (ILIT)

An ILIT is designed to hold a life insurance policy outside of your taxable estate. Because the policy is owned by the trust rather than by you personally, the death benefit generally isn't counted toward your estate for federal estate tax purposes. This tends to matter most for households approaching or above the federal exemption, which now sits at $15 million per individual for 2026. For most San Diego sellers, that threshold is well out of reach, but for higher-net-worth homeowners, particularly those with a substantial life insurance policy layered on top of real estate and investment holdings, an ILIT can be a meaningful tool.

Qualified Personal Residence Trust (QPRT)

This one is specific to real estate, which is why San Diego homeowners sometimes ask about it directly. A QPRT allows you to transfer your home into an irrevocable trust while retaining the right to live in it for a set number of years. At the end of that term, ownership passes to your named beneficiaries, often adult children, typically at a reduced gift tax value compared to transferring the home outright. The trade-off is that you need to outlive the trust term for the strategy to work as intended, and giving up ownership is permanent. QPRTs tend to appeal to homeowners with a highly appreciated property who are comfortable committing to a long-term plan for passing it to the next generation.

Charitable Remainder Trust (CRT)

A CRT lets you transfer an asset, often a highly appreciated one like investment real estate or stock, into an irrevocable trust that pays you (or another beneficiary) income for a term of years or for life. Whatever remains at the end goes to a charity of your choosing. This appeals to homeowners who are charitably inclined, want to convert an appreciated asset into an income stream without triggering a large upfront capital gains hit, and want a current-year income tax deduction for the charitable portion.

Special Needs Trust (SNT)

A special needs trust holds assets for the benefit of a person with a disability without disqualifying them from means-tested government benefits like SSI or Medi-Cal. These are used by parents or grandparents planning for a family member with special needs, and they're typically set up as irrevocable, either during the grantor's lifetime or through a will or living trust that takes effect at death. Structuring this correctly matters a great deal, since even a well-meaning direct inheritance can unintentionally disqualify a loved one from benefits they rely on.

Medi-Cal Asset Protection Trust

Given how many of my clients are thinking ahead to retirement and long-term care, this one comes up often. An irrevocable trust can, if set up well in advance, help protect a home and other assets from being counted toward Medi-Cal's asset limits or subject to estate recovery after a person's passing. Because there's typically a lookback period involved, this is a trust you plan for years ahead of needing care, not something to set up reactively. Anyone considering this route should work closely with an elder law attorney familiar with current Medi-Cal rules.

Marital Trust / AB Trust (Bypass Trust)

This was standard advice for married couples for decades, and some existing trusts still use this structure. When the first spouse dies, the trust splits: one portion (often called the Survivor's Trust) holds the surviving spouse's share and generally remains revocable by them, while the other portion (the Bypass, Credit Shelter, or Decedent's Trust) holds the deceased spouse's share and becomes irrevocable. Historically, this was used to make sure both spouses' federal estate tax exemptions got used. Since the exemption became portable between spouses in 2011, meaning a surviving spouse can generally claim a deceased spouse's unused exemption, fewer couples need this structure purely for federal tax reasons. It can still make sense for blended families, state-level property tax considerations, or asset protection, which is why it's worth discussing rather than assuming it's outdated.

Testamentary Trust

Unlike the trusts above, a testamentary trust doesn't exist until you pass away. It's created by instructions in your will and only comes into being once the will goes through probate. Because it's established at death and can no longer be changed by the person who wrote it, it's irrevocable from the moment it exists. These are sometimes used to manage an inheritance for minor children or grandchildren, or to stagger distributions over time rather than handing over a lump sum at 18. The trade-off compared to a living trust is that assets passing through a testamentary trust still go through probate first.

Quick Reference: Which Trust, and Why

Does Death Change a Trust From Revocable to Irrevocable?

Here's what that looks like in practice. While you're alive, you can add property, remove a beneficiary, change your successor trustee, or dissolve the trust altogether. The moment you pass away, none of that is true anymore. Your named successor trustee takes over and is legally bound to distribute and manage the trust exactly as you left it. Nobody, including the successor trustee and the beneficiaries, can rewrite your instructions. That permanence is a feature, not a flaw. It's what protects your wishes and what allows your estate to bypass the delays and cost of probate court.

What about irrevocable trusts?

Irrevocable trusts don't undergo this same shift, because they were already irrevocable while you were alive. Death doesn't change their legal status. What death can trigger, depending on the specific document, is a distribution event: the trustee may be instructed to pay out assets to beneficiaries, terminate the trust, or continue managing and investing the assets for the next generation. The trust doesn't switch categories; it simply executes the next step it was already designed to take.

The exception worth knowing: joint trusts for married couples

If you and a spouse have a joint revocable trust, particularly an older AB or marital trust, the picture is a bit more layered. When the first spouse passes away, many of these trusts split automatically into two parts: a Survivor's Trust holding the surviving spouse's share, which they can typically continue to amend since it's still theirs, and a Decedent's or Bypass Trust holding the deceased spouse's share, which becomes irrevocable at that point. In other words, part of the trust stays revocable and part of it locks in, all triggered by the same event. Because every couple's trust is drafted differently, and older trusts sometimes use different mechanics than newer ones, this is exactly the kind of detail worth confirming directly with an estate planning attorney rather than assuming.

Where Real Estate Fits Into All of This

Whatever type of trust you end up using, the real estate piece has its own set of details worth getting right. A home needs to actually be retitled into the trust's name to get the probate-avoidance benefit, something that's easy to overlook after the trust itself is signed. If you're considering leaving your San Diego home to children through a trust, Proposition 19's rules on parent-child transfers and the property tax base can meaningfully affect what your heirs eventually pay in property taxes, and that's worth coordinating between your attorney and your real estate plans well ahead of time. And if a trust sale becomes part of your plan, whether you're the trustee handling a parent's estate or planning your own, that's a transaction with its own timeline and disclosure considerations that differ somewhat from a typical sale.

None of this needs to feel overwhelming. Most families work through it one conversation at a time, usually starting with a trust attorney and, when real estate is involved, a conversation with someone who understands how these pieces intersect locally.