Can Someone Under 55 Live in a Trilogy Home? The 55+ Rules

A couple tours a Trilogy home on a Saturday. He is 58, she is 52. They like the floor plan, the lot, the single story, and then they stop at the front door because someone told them she is not allowed to live there.

I get this question from both directions. Buyers ask because a spouse is 52. Sellers ask because they are worried the age rule cuts their buyer pool in half. Both are asking a legal question with a real answer, and after more than 30 years on the lending, title, and escrow sides of these deals, I can tell you it is friendlier than most people assume.

What does the "55+" label require?

The federal rule lives in the Fair Housing Act's housing-for-older-persons exemption. Under 24 CFR 100.305(a), at least 80 percent of a community's occupied units must be occupied by at least one person aged 55 or older. That is the threshold that lets a community legally restrict by age at all.

Notice what that rule does not say. It does not say every resident must be 55, or even every household. It says 80 percent of occupied units need one qualifying person, and the regulation adds that the community itself decides what age rule, if any, applies to the rest.

So the answer to "can someone under 55 live here" is yes, in several situations. Which situations depends on the community's own recorded documents, not on the federal minimum. At Trilogy, those documents are the CC&Rs, and they arrive in the HOA resale disclosure packet. That packet is the place to read the rule that will govern your household, and I have written separately about what is in a Trilogy resale disclosure package and how long it takes.

Who can live with the qualifying resident under California law?

California adds a second layer that federal law does not, and it is the layer that protects the household. Civil Code section 51.3 sets the floor for how restrictive a senior citizen housing development's rules are allowed to be, and a community cannot go below it.

Under section 51.3(c), a community's age limitation "shall not be more exclusive than to require that one person in residence in each dwelling unit may be required to be a senior citizen," with the other residents allowed to be qualified permanent residents or permitted health care residents.

Who California lets live with the qualifying resident

• Qualified permanent resident — someone who was living with the qualifying resident and was 45 or older, or was a spouse, cohabitant, or a person providing primary physical or economic support (section 51.3(b)(2)).
• Permitted health care resident — someone hired to provide live-in, long-term, or terminal care to a qualifying resident, including a family member providing that care (section 51.3(b)(7)).
• Guests under 55 — the CC&Rs must allow guest stays of not less than 60 days in any year (section 51.3(d)).

That last one surprises people. Grandchildren visiting for a long summer are contemplated by the statute, not smuggled past it.

What happens to a spouse under 55 if the qualifying resident dies?

This is the question people are usually too polite to ask out loud, so I will answer it plainly. Under Civil Code section 51.3(e), upon the death, dissolution of marriage, hospitalization, or other prolonged absence of the qualifying resident, a qualified permanent resident is entitled to continue occupying the home. The younger spouse does not lose the house.

That protection is written into state law, and it does not depend on the HOA's goodwill. It is also why the "qualified permanent resident" box on the community's age-verification form matters more than it looks. That form is the paper trail establishing the status later.

What sellers get wrong about the age rule

The buyer pool is bigger than sellers fear

The worry is understandable and the data does not support it. In the National Association of REALTORS® 2025 Profile of Home Buyers and Sellers, the median age of repeat buyers reached 62, an all-time high, up from 36 in 1981. The same report found sellers had owned their homes a median of 11 years before selling, also a record.

NAR 2025 Profile of Home Buyers and Sellers

The median repeat buyer is now 62, and has owned the home they are leaving for 11 years.

Both figures are all-time highs. After eleven years of ownership, the typical repeat buyer sits inside Trilogy's age range and is carrying real equity into the purchase.

62

median age of repeat buyers

An age-restricted listing in Brentwood is not working a narrow market. It is working the part of the market that is transacting.

Where the pool genuinely narrows is on the financing and timing side, not the age side. If you are weighing whether you can carry two payments during a move, that is worth a conversation before you list, not after.

What I'd tell you if you called me today

Order the HOA resale disclosure package the day you list, not the week you are in escrow. Read your own CC&Rs on the age provision before a buyer's agent reads them to you. And if a younger spouse or a live-in caregiver is part of your household picture, get that documented with the association now, while everyone involved can sign a form easily.

If you are moving to Trilogy from a larger Brentwood or Bay Area home, the property tax question usually comes next. Prop 19 lets homeowners 55 and older transfer their tax base, and it is worth understanding before you make an offer. If you are still deciding between communities, I have compared Trilogy, Summerset, and Kindred side by side.

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If a spouse, a parent, or a caregiver in your household is under 55 and you are not sure where they land under Trilogy's rules, tell me who lives in the house and their ages. I'll walk you through the CC&R provision that applies to your situation before you write an offer or sign a listing agreement.

(925) 200-0717 — seven days a week, and you'll get me, not an assistant.

This post is for general informational purposes only and is not legal or tax advice. Age-restriction rules, HOA governing documents, and California statutes change and vary by community. Confirm the provisions that apply to a specific property with the association's recorded CC&Rs and, where the stakes warrant it, with a California real estate attorney.

Margie Lupo, Broker Associate, SRES® · eXp Realty of Northern California, Inc. · DRE #01193496 · Brokerage DRE #02188495 · Equal Housing Opportunity

Sources

• 24 CFR Part 100, Subpart E — Housing for Older Persons, sections 100.305, 100.306, and 100.307. eCFR, title 24 current as of September 1, 2026. Accessed September 3, 2026.
• California Civil Code section 51.3 (2025), as amended by Stats. 2016, Ch. 50, Sec. 5. Accessed September 3, 2026.
• Top 10 Takeaways from NAR's 2025 Profile of Home Buyers and Sellers, National Association of REALTORS®, published November 3, 2025. Accessed September 3, 2026.
• Trilogy at the Vineyards community details (Shea Homes, sold out at roughly 1,100 single-story homes) as previously published on The Brentwood Blog. Accessed September 3, 2026.