What One Canyon Lot on Bordeaux Avenue Just Decided for the Rest of La Jolla Shores

Above Birch Aquarium, where Bordeaux Avenue drops toward a wild, brush-covered canyon that has never held a structure, a 1,111-square-foot accessory dwelling unit just cleared its final hurdle. One bedroom, one bathroom, a basement, three roof gardens and three roof terraces, tucked behind an existing single-family home on a 0.91-acre lot. On September 9, a San Diego hearing officer approved it. Three separate local review bodies had already told the applicant no.

That sequence is the story. Not the ADU itself, and not the opposition to it, but the fact that a project denied by the La Jolla Shores Permit Review Committee, denied again by the La Jolla Shores Planned District Advisory Board, and denied a third time by the La Jolla Community Planning Association on an 8-6 vote still ended up approved once it reached the city's hearing officer. For anyone who owns, or is evaluating, a canyon-adjacent parcel in La Jolla Shores, that outcome is worth understanding in detail, because the arithmetic that decided it applies to more than one address on Bordeaux Avenue.

The Number That Actually Mattered

Public sentiment at every hearing ran one direction. Neighbors argued the ADU's footprint would encroach on environmentally sensitive canyon land, raise fire risk, and disturb wildlife habitat that has sat untouched for decades. La Jolla architect Phil Merten, speaking against the project, did the math that mattered most: San Diego's municipal code caps development on a site containing environmentally sensitive lands at 25 percent of the property. Merten calculated the proposed Bordeaux Avenue project, combined with the existing house and its required brush management zone, landed at 26.2 percent. Over the line by just over one point.

That single number is why the Permit Review Committee voted 6-0-1 against the project on April 16, and why the Community Planning Association's Permit Review Committee reasoning carried into the full board's 8-6 denial on May 7. Trustee Glen Rasmussen, who ultimately voted to deny, put his ambivalence on the record: he thought the architect had handled the design with real sensitivity, but the development still sat out further than anything else on the street.

The 25 percent threshold is not a soft guideline that a sympathetic design can talk its way around. It is the specific mechanism that determines whether a canyon lot in the Shores can add square footage at all, and it measures the new build against everything already on the parcel, not just the addition in isolation.

The Phrase That Flipped the Outcome

If the footprint math was the argument against approval, the legal status of the land itself was the argument for it. At the September 9 hearing, city staff and associate planner Alexis Hartley told hearing officer Antoinette Gibbs that the land in question is legally graded, previously disturbed, and does not qualify as environmentally sensitive land under the code, regardless of how wild it looks today. Hartley added that the ADU's entire footprint falls within the allowable development area once that classification applies, and that other city staff had already confirmed the project complies with brush management requirements.

There was a second question raised in earlier hearings: whether the canyon serves as a public scenic overlook under the La Jolla Community Plan, which would add another layer of protection. Hartley addressed that too, noting a scenic overlook is defined as a view over private property, and that because the ADU sits below the street's grade, the city determined there would be no loss of public view from the public right of way. The stepped-back design, she said, would blend into the topography and produce less visual impact from any nearby hiking trail.

Gibbs weighed the record and said she was satisfied the required conformity findings had been made. Approved.

What decided this case was not whether the land looks pristine to a neighbor standing at a fence line. It was whether county and city records classify it as previously graded and legally disturbed. That is a documentary question, not a visual one, and it is answerable long before a design ever reaches a hearing room.

Three Denials, One Approval: The Timeline

• April 16, 2026 — La Jolla Shores Permit Review Committee votes 6-0-1 to recommend denial, citing the ESL footprint calculation and neighbor opposition.
• May 7, 2026 — La Jolla Community Planning Association votes 8-6 to ratify the denial, with trustees split even as some praised the design itself.
• September 9, 2026 — San Diego hearing officer Antoinette Gibbs approves the project on appeal from city staff findings, overriding all three local recommendations.
• Now through the appeal window — The decision is final unless appealed to the San Diego Planning Commission. As of this writing, that window remains open.

That last line matters. This is not a settled precedent yet. It is a live one, and the appeal period is the reason any canyon-lot owner citing this case today should treat it as instructive rather than final.

What a Canyon Lot Owner in the Shores Should Actually Ask

Neighbors on Bordeaux Avenue used a specific phrase in their public comments to the city: they were worried the project would "open the floodgates" for building in canyons that have sat untouched for generations. Whether or not that concern proves out, the case has already established the two questions that will decide the next one.

First: what is the documented grading history of the parcel. A lot that was graded decades ago, even if it now looks like undisturbed brush, may not carry the environmentally sensitive lands designation that would otherwise cap development at 25 percent. That history sits in city permit records, not in how the land appears from the street. Anyone weighing an ADU, a major remodel, or even a purchase decision on a canyon-adjacent lot in La Jolla Shores should pull that grading history before commissioning architectural plans, not after.

Second: how the footprint math actually works. The 25 percent cap is not measured against the new structure alone. It includes the existing house and the brush management zone the city requires around it. A lot that looks like it has plenty of room can still fail the calculation once the existing footprint and required clearance are added back in, which is exactly what happened here before the ESL classification question changed the equation entirely.

Neither of these is a design problem. They are records and code questions, best worked through with a land use attorney or a biologist familiar with San Diego's municipal code before a single rendering gets drawn. The Bordeaux Avenue case shows a project can lose on the numbers at every local hearing and still prevail once the underlying land classification is established. It also shows the reverse is possible: a project that looks modest on paper can stall for months if that classification question is never resolved in its favor.

Why This Matters Beyond One Address

La Jolla Shores has a meaningful number of parcels backing onto canyon terrain, particularly in the area above Birch Aquarium and along the ridge that neighbors describe as the Shores Heights. For owners of those lots, development potential has always been somewhat uncertain, dependent on committee mood as much as code. The Bordeaux Avenue outcome narrows that uncertainty into something closer to a formula: grading history plus footprint math plus brush management compliance, weighed by city staff rather than by neighborhood sentiment alone.

That is useful information whether you are the seller of a canyon lot trying to understand what a buyer's architect will find, or the buyer trying to price in development potential before you own the parcel outright. It is also a reminder that local board denials, even repeated ones, are not the final word in San Diego's land use process. The hearing officer's review sits above them, and it runs on documentation.

A Few Questions Worth Asking Before You Design Anything

Does the 25 percent cap apply to every lot in La Jolla Shores? No. It applies specifically to parcels containing land classified as environmentally sensitive under the municipal code. Whether a given canyon-adjacent lot carries that classification depends on its grading history, which is a records question, not a visual one.

If my lot was never graded, does that mean I cannot build? Not necessarily, but it means the footprint math applies more strictly, since the land is more likely to retain its environmentally sensitive designation. That is a conversation for a land use attorney or biologist with access to the parcel's permit history.

Is the Bordeaux Avenue decision final? Not yet. It remains subject to appeal to the San Diego Planning Commission, and that window was still open as of this writing.

Canyon lots in La Jolla Shores carry a version of value that a listing sheet cannot capture on its own, part privacy, part unbuildable land that has kept the view intact for decades. The Bordeaux Avenue case is the clearest evidence yet of exactly what it takes to change that calculus, and exactly what it takes to keep it the same.

If you own a canyon-adjacent property in La Jolla Shores and want a clear read on what the neighborhood's development history means for your specific lot, the Nelson Brothers Team has spent years tracking how these parcels move through the city's process. Let's Connect.