The homeowner will say the sidewalk belongs to the city, and most of the time that is where the story ends. Not always. California recognizes a control exception: a homeowner who plants the parkway tree, waters it on an irrigation line, and sends a gardener to tend the strip has taken control of the ground doing the damage, and control carries duty. The Vertanous Firm has recovered more than $60 Million for injured Californians, and in sidewalk uplift cases the winning move is made early: investigate every owner and every maintainer before the deadlines choose your defendant for you.
The Short Answer
Start with the rule the insurance adjuster will recite: an abutting homeowner ordinarily owes no duty to maintain the public sidewalk in front of the house. That is real law, restated as recently as Lopez v. City of Los Angeles (2020) 55 Cal.App.5th 244, and if it were the whole law, every sidewalk case would end at the city clerk's window. This page is part of our complete guide: Pasadena premises liability lawyer.
It is not the whole law. The duty rule yields when the homeowner has exercised control over the sidewalk or the parkway strip whose tree is doing the lifting. The California Supreme Court put it without qualification in Alcaraz v. Vece (1997) 14 Cal.4th 1149: a defendant need not own, possess, and control property to be held liable; control alone is sufficient. So the question in these cases is never just "whose name is on the deed." It is "who treated this ground as theirs." And that question is answered by a ladder of specific acts, which is what the rest of this page climbs.
The Two Pathways
Lopez organizes the doctrine into two routes, and either one is enough.
First pathway: the owner created the hazard. The classic version is the parkway tree. A homeowner who plants a tree whose roots lift the adjacent slab has created the dangerous condition, and responsibility follows the act. The same logic reaches irrigation that undermines the concrete and driveway or hardscape work that displaces it.
Second pathway: the owner took control of ground someone else's act made dangerous. A homeowner who treats the public strip as their own, landscaping it, irrigating it, maintaining it, can owe pedestrians a duty even for a condition they did not personally create. Alcaraz itself involved exactly that structure: the duty can attach even where the dangerous instrumentality belongs to someone else, because the duty flows from control of the ground, not title to the hazard.
Both pathways end at the same standard: reasonable care. Neither makes the homeowner an insurer of the sidewalk. What they take away is the shrug.
The Ladder, Bottom Rungs
The courts have been careful to protect ordinary neighborliness, and any honest analysis starts there. A homeowner does not take on the city's sidewalk by being a decent neighbor to it.
If the homeowner's whole file is a broom and a garden hose, the claim belongs against the public entity, and the six-month clock discussed below becomes the whole ballgame.
The Ladder, Top Rungs
Now the other side of the line, drawn most cleanly in the defense's own favorite case. Jones holds that where abutting owners have planted the parkway trees or have habitually trimmed or cared for them, those owners have the duty to maintain the trees in a safe condition toward pedestrians. Planted, or habitually cared for. That is the dividing line, and everything above it is a duty case.
Jones drew its mechanism from Low v. City of Sacramento (1970) 7 Cal.App.3d 826: when a private owner maintains the parkway, the owner exercises control over it, subordinate only to the municipality's street easement, and is liable when the failure to keep it reasonably safe injures a pedestrian. Control of the ground, in other words, is not a metaphor. It is the thing the gardener's invoice proves.
The anchor case for uplift injuries is Alpert v. Villa Romano Homeowners Assn. (2000) 81 Cal.App.4th 1320, and it reduces to four elements worth checking against any fall: the owner planted or installed the vegetation beside the sidewalk, installed the irrigation that waters it, maintains it, and had prior notice of the uplift the roots produced. An owner who checks those boxes owes pedestrians reasonable care, and a jury decides whether the owner met it.
Example: Years ago, a Pasadena homeowner planted a magnolia in the parkway strip, ran a drip line to it from the house, and put the strip on the weekly gardener's route. The tree's roots lift the adjacent slab into a step. The city mails the owner a sidewalk repair notice; nothing is done. A year later, an evening walker catches the raised edge and fractures her shoulder.
Conclusion: This is the top of the ladder: planted, irrigated, maintained, and on prior notice. Under the pattern of Alpert and the dividing line of Jones, the homeowner owed pedestrians reasonable care, and the homeowner's insurance answers alongside whatever responsibility the city bears. The defense shrug, "it is the city's sidewalk," does not survive the gardener's invoices and the repair notice.
The Other Route
There is a second, independent way to frame homeowner responsibility, and it comes from the California Supreme Court. Sprecher v. Adamson Companies (1981) 30 Cal.3d 358 replaced old immunity thinking for natural conditions with ordinary negligence principles: a possessor of land must manage it reasonably in view of the risks to neighbors and passersby. Moeller v. Fleming (1982) 136 Cal.App.3d 241 applied that test to a root-damaged sidewalk, weighing the likelihood and probable seriousness of injury, the burden of reducing the risk, the location, and above all the owner's degree of control over the condition creating the risk.
That last factor is the one juries understand without a jury instruction. Who was in a position to prevent this, and what would it have cost them? A homeowner whose own tree, on their own irrigation, on their own gardener's route, lifted the concrete an inch a year for a decade was in a position to prevent it for the price of a root barrier or a grinder. The law does not require perfection from that homeowner. It requires an answer better than "not my sidewalk."
Tripped on a lifted sidewalk? The care history is provable, but it fades fast.
Free Case ReviewA Separate Fight
Do not confuse the duty question with the defect question. Even when a duty exists, every sidewalk defendant argues the uplift was too small to be actionable, a trivial defect the law tolerates. Keep the two fights separate, because they are decided on different evidence.
The defense workhorse is Huckey v. City of Temecula (2019) 37 Cal.App.5th 1092, where a modest height differential was held trivial as a matter of law. The answer, on a homeowner-defendant record, is Fajardo v. Dailey (2022) 85 Cal.App.5th 221, which reversed a defense judgment on an uplift of roughly an inch because aggravating circumstances raised questions only a jury could answer. The lesson of the pair: measurement alone does not decide these cases. Lighting, shadow, the abruptness of the edge, concealment by leaves or debris, the surrounding distractions, and the history of that stretch of concrete all count.
Which is why the evidence you gather in the first days matters more than any argument later: straight-down photographs with a ruler or a coin for scale, approach shots from walking height at the hour you fell, and wide shots capturing the tree, the irrigation, and the lighting. Uplifts that hurt someone get ground down quickly. The photographs outlive the grinder.
Defendants and Deadlines
In practice, a serious uplift case is investigated against every owner and every maintainer at once. The city or other public entity answers for a dangerous condition of public property on the terms of its own statute, which we explain on our page for dangerous condition of public property. The homeowner answers when the ladder above puts them in control. Each will point at the other, which is a reason to have both in the case, not a reason to choose.
The deadlines are unforgiving and unequal. A claim against a public entity generally requires a written government claim within six months under Government Code section 911.2. The claim against a private homeowner generally carries the two-year deadline of Code of Civil Procedure section 335.1. The six-month clock sets the schedule, and it is running while the family waits for the city to "investigate." For the broader question of who owns any given stretch of concrete, see our guide to sidewalk trip and fall cases.
Example: A retiree in a Pasadena bungalow occasionally sweeps leaves off the sidewalk out front, and during one heat wave dragged a hose out to the parkway ficus the city planted decades ago. City records show municipal crews planted the tree and root-pruned it twice. A jogger trips on the root uplift at dawn and breaks his wrist.
Conclusion: This is the bottom of the ladder. Under Jones and Contreras, sweeping and occasional watering of a city-planted, city-maintained tree is neighborly maintenance, not control, so the retiree likely owes no duty. The real case runs against the city, which means a written government claim within six months under Government Code section 911.2. The jogger who spends month five arguing with the homeowner's insurer has spent the case's most valuable month on the wrong defendant.
Send us photos of the uplift and the tree. We will build the care history.
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Questions We Hear Every Week
It depends on the history of care, not on where the trunk stands. California courts ask who planted the tree and who has habitually trimmed or cared for it. A tree the city planted and maintains points at the city. A tree the homeowner planted, irrigates, or has a gardener tend points at the homeowner, even though the strip itself is public right-of-way. That history lives in city records, water lines, and the neighbors' memory, and gathering it early is half the case.
Yes, and in a serious injury case it is often the correct move, because each defendant will point at the other. The claims run on different clocks: the case against a public entity generally requires a written government claim within six months under Government Code section 911.2, while the case against a private homeowner generally carries the two-year deadline of Code of Civil Procedure section 335.1. The six-month clock controls the schedule.
It is the default rule, but not the whole rule. An abutting owner ordinarily owes no duty to maintain the public sidewalk. The exception is control: under Alcaraz v. Vece (1997) 14 Cal.4th 1149, control alone is sufficient for liability, without ownership. A homeowner who planted the parkway tree, installed irrigation, or treats the strip as their own can owe pedestrians a duty of reasonable care. Whether this homeowner crossed that line is a fact question, which is why we investigate before anyone takes the default rule at face value.
Not automatically. Defendants call small uplifts trivial, and courts do dismiss some cases on that basis. But size is only the start: in Fajardo v. Dailey (2022) 85 Cal.App.5th 221, a judgment for the defense was reversed on an uplift of roughly an inch because aggravating circumstances, the kind that make a small defect dangerous, raised questions a jury had to answer. Lighting, shadows, an abrupt edge, and concealment by leaves or debris all matter. Photograph the defect with something for scale before it is repaired.
Against a private homeowner, generally two years under Code of Civil Procedure section 335.1. Against a city or other public entity, a written government claim is generally due within six months under Government Code section 911.2, and that shorter clock should set your schedule until ownership and control are sorted out. The evidence deadline is shorter than either: uplifts get ground down or patched quickly once someone is hurt.
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