Menlo Park Loosened Its ADU Rules. The Short-Term Rental Door Stayed Shut.

On June 9, 2026, the Menlo Park City Council voted to repeal and replace the city's entire accessory dwelling unit ordinance. Three weeks earlier, at the May 19 meeting where the council introduced that ordinance, members voted unanimously to strip out every reference to "vacation rentals" in the rental-term section. Read quickly, that sounds like the city just cleared a path for short-term rental income in backyard cottages across town. It didn't. The 30-day minimum rental term for ADUs permitted after January 1, 2020 is still on the books, and Menlo Park's transient occupancy tax now sits at 15.5% on any stay under 30 days. What changed is real. It just isn't the thing a headline skim would lead you to expect.

For a homeowner weighing whether an ADU is worth building, or an investor comparing Menlo Park against other Peninsula cities, that gap between what got easier and what only sounds easier is the whole story.

Eight Months, One Rulebook

The rewrite didn't happen overnight. The Planning Commission held a study session on December 15, 2025, working through how to bring Chapter 16.79 of the zoning code into line with state ADU law while adding the city's own objective design standards. On April 13, 2026, the commission recommended the council adopt a new ordinance that eliminated parking minimums and gave owners more room to exceed floor-area limits. The council reviewed that recommendation on May 19, introduced the ordinance with the vacation-rental language removed, and adopted it on June 9. The California Department of Housing and Community Development then had 60 days to review the text. HCD came back with no required amendments, and the ordinance took effect July 10, 2026.

That sequence matters because it wasn't discretionary. The city's adopted 2023-2031 Housing Element commits Menlo Park to specific ADU-related programs, including one to modify ADU development standards and permit processes and another to create objective residential design standards. This ordinance is the city checking those boxes, not a policy experiment it can walk back easily.

At the same May 19 meeting, several residents pushed the council to pair the rewrite with a rental registry, arguing that new ADUs should function as housing for older residents and lower-income tenants rather than as short-stay inventory.

That tension between more housing and more travel lodging runs through the whole rulebook, which is exactly why the vacation-rental line got cut in the first place. The council wasn't opening a door. It was cleaning language that no longer matched what the ordinance actually does elsewhere.

What Got Easier: Square Footage, Not Stays

The substantive changes in the new ordinance are about buildable space, not rental terms.

On a typical Menlo Park lot, where side yards are narrow and a driveway often eats into the buildable footprint, removing the parking mandate alone can free up the strip of yard that used to be reserved for a car. Add the new eaves allowance, which lets a roof overhang project up to 18 inches into that side and rear setback, and a homeowner working with a tight rear yard has more usable building envelope than the old chapter 16.79 allowed. That's the kind of change a construction-minded read of the ordinance turns up before you ever call a contractor: it changes what fits on the lot, which changes what the ADU is worth building for.

None of it touches how long you're allowed to rent the unit once it's built.

The Language That Disappeared Without Changing Anything

Here's the part worth sitting with. If a city wanted to genuinely open the door to short-term rentals in ADUs, it would repeal the 30-day minimum rental term or carve out an exception. Menlo Park did neither. It removed the words "vacation rentals" from one section of the rental-term requirements while leaving the underlying 30-day minimum fully intact for ADUs permitted after January 1, 2020.

Layer the tax structure on top and the practical picture gets clearer. Menlo Park voters approved Measure CC in November 2024, raising the transient occupancy tax from 12% to 14% on January 1, 2025, and to 15.5% on January 1, 2026, a schedule confirmed by both Almanac News's coverage of the measure and the city's own five-year financial forecast, which built in roughly $3.6 million in additional annual revenue once the increase is fully phased in. That 15.5% applies to any stay of 30 days or less, on top of platform fees and normal operating costs. A homeowner who reads "vacation rentals" disappearing from the ordinance and assumes Airbnb-style income just got easier is working from the wrong section of the code. The rental-term restriction lives in a different part of the ordinance than the language the council edited, and it didn't move.

Where the Real Money Sits

Run the numbers on a long-term rental instead and the ordinance's actual value shows up.

Construction costs for a Menlo Park ADU vary widely by scope. Conversions and prefab units commonly run in the $150,000 to $300,000 range, while a custom detached unit with new site work can reach $300,000 to $500,000 or more. A one-bedroom ADU in Menlo Park typically leases in the low to mid $3,000s per month, depending on size, condition, and location within the city. At that rent, and with the 30-day-or-longer rule keeping the unit out of transient-tax territory, the unit behaves like what it legally is: a small rental property, not a hotel room. The eliminated parking requirement and the added floor-area flexibility are what make that unit bigger, more livable, and cheaper to permit than it would have been under the old chapter 16.79. That's the actual lever the June 9 ordinance pulled.

For a fuller breakdown of what a Menlo Park rental unit needs to pencil, including property tax, insurance, and the state's rent-increase and deposit rules, see our companion guide to rental property performance in Menlo Park.

What This Means If You're Selling, Not Renting

Not every owner considering an ADU is chasing rental income. For a seller preparing a Menlo Park listing, an ADU functions differently, as flexible space for a home office, a caregiver, or an adult child, and as square footage that shows well on a floor plan without changing the character of the primary residence. The same rules that make an ADU easier to permit for a landlord, more buildable floor area, fewer parking headaches, apply just as directly to an owner building one to add resale flexibility rather than monthly rent. The construction-side read of the ordinance, what actually fits on a given lot once the new setback and coverage allowances are applied, is the same due diligence question either way.

Frequently Asked Questions

Does the July 10, 2026 ordinance apply to an ADU I already built? The rewrite is prospective. It governs the standards for new ADU permits going forward. If your ADU was permitted after January 1, 2020, the 30-day minimum rental term already applied to it under the prior chapter 16.79 and continues to apply now.

Can I use a new Menlo Park ADU as a short-term or vacation rental? No. The council removed the words "vacation rentals" from the ordinance's rental-term section on May 19, 2026, but the 30-day minimum rental term for ADUs permitted after January 1, 2020 remains in place, and any stay under 30 days is subject to the city's 15.5% transient occupancy tax.

Do I still need to provide a parking space for a new ADU? Under the ordinance adopted June 9, 2026, Menlo Park eliminated its minimum parking requirement for ADUs citywide, which removes a common obstacle on narrower lots where a dedicated parking space previously competed with buildable yard space.

If you're weighing whether an ADU adds more value as a rental unit, a resale feature, or both, the details in Menlo Park's rewritten ordinance change the math on what actually fits your lot. Luxuriant Realty pairs that kind of construction-informed reading with local transaction experience. Elevate Your Lifestyle, Request a Personalized Consultation.