Stairway falls: stairs and railings

Stairway falls produce worse injuries than falls on the flat, because the person is already moving and has further to go. They are also more provable than most premises claims, because a staircase is a measurable object and the defects are permanent. This is general information, not legal advice.

Why consistency matters more than any single dimension

Climbing or descending stairs is largely automatic. After the first few steps, gait calibrates to the rhythm of the flight and the foot is placed without looking. That works as long as every step is the same.

A single riser taller or shorter than its neighbours, or a tread of a different depth, breaks the expectation at the moment the body is already committed. Which is why the most important measurement is not any individual riser height but the variation between them across the flight. Building standards limit that variation for exactly this reason.

Measure every riser and every tread, not just the one at the fall.

Handrails

A handrail is a recovery device: something to catch when balance is already lost. Whether one was present is only the first question. It also has to be:

• On the required side, or both sides, depending on the width and configuration.
• Continuous through the flight, without gaps at landings where it is most needed.
• At a usable height, which is specified rather than a matter of taste.
• Graspable. A hand must be able to close around it. Wide decorative timber, a flat top rail, or a wall-mounted ledge does not perform the function even where something is nominally there.
• Securely fixed. A rail that moves when weight goes on it is worse than none, because it is relied on and then fails.
• Extending at the top and bottom, where the transition happens.

The other stairway defects

• Lighting, particularly at the top and bottom where the level change begins and ends.
• Nosing — worn, chipped, or lacking the visual contrast that distinguishes one step from the next.
• Surface — worn tread, missing slip-resistant strips, polished stone, loose carpet, or a lifted edge.
• Debris and stored items on a flight or landing.
• Water intrusion, which is both a hazard and evidence of a maintenance failure.
• Guardrails and balusters, which are about falling from the stairs rather than on them.
• Single steps in an otherwise level floor — the hardest level change to perceive.

Building code evidence

Codes give a claim something premises cases often lack: an external, published standard that does not depend on a jury's intuition about what is reasonable. Riser and tread dimensions, permitted variation, handrail height and graspability, illumination, and guard heights are all specified.

Two qualifications matter. A violation of a safety regulation is evidence of negligence, creating a rebuttable presumption where the violation caused the kind of harm the rule was meant to prevent and the injured person was in the class it protects — it is not an automatic verdict. And compliance is not a defence either: a staircase can meet the applicable code and still be unreasonably dangerous in its lighting, its wear, or its maintenance, and the duty of reasonable care applies independently.

Older buildings may lawfully retain non-conforming features, which is a reason to establish the construction and remodelling history early — permits for alteration work generally bring the altered portion up to current standards.

Sources: Evid. Code, § 669 (presumption of negligence from violation of a statute, ordinance, or regulation, and its rebuttal); CACI No. 418 (presumption of negligence per se) and CACI No. 420 (rebuttal — violation excused); CACI No. 1000 (premises liability), Judicial Council of California Civil Jury Instructions (2026 edition). In rented housing, Civ. Code, § 1941.1 also requires floors, stairways, and railings to be maintained in good repair.

Measure and photograph before anything changes

• Every riser height and tread depth in the flight, not only the step involved.
• Handrail height, diameter or profile, continuity, and whether it moves under load.
• Lighting as it was at the time of day of the fall.
• The flight photographed from above and below, showing what a person sees on approach.
• Nosing condition and surface wear, close up.
• Any repair or alteration that follows — and its date.

Stairs get repaired after an injury, and a repaired stair is very hard to measure.

Common questions

Why does one uneven step matter so much?

Because stair climbing is largely automatic. After the first two or three steps a person’s gait calibrates to the rhythm, and the foot is placed without looking. A single riser that differs from the others breaks that expectation at exactly the moment the body is committed.

There was a handrail. Does that settle it?

Not on its own. A handrail has to be usable — present on the required side, continuous through the flight, at a height that works, secured properly, and shaped so a hand can actually close around it. A decorative rail too wide to grip is not a handrail in any useful sense.

Does a building code violation win the case?

It helps considerably and does not decide it. A violation of a safety regulation can create a presumption of negligence where it caused the kind of harm the rule exists to prevent, but the presumption is rebuttable and causation still has to be shown.

The building is old. Does the code still apply?

Older buildings may be permitted to keep non-conforming features, which is why compliance is not the whole question. The duty of reasonable care applies regardless, and remodelling work generally has to meet current standards for what was altered.