The height change matters, but so does movement
A raised walkway edge may look simple in a photo. Field conditions decide whether grinding, patching, partial replacement, or broader replacement is the practical path.
If a slab is still moving, settling, or being lifted by roots or soil, a surface repair may not last.
The surrounding path has to be considered
Transitions at gates, landings, curbs, drains, steps, and thresholds affect the repair. The repair also has to account for slope, drainage, texture, and how people use the path.
Accessibility and code questions require field verification and, when needed, the appropriate professional review.
The customer question
The question is whether the walking surface can be made safer with grinding, patching, or a localized replacement, or whether active movement and surrounding transitions make a broader repair more practical.
Visible and contributing conditions
Document the height change, crack direction, broken edge, slope, water path, nearby roots or soil, and the full walking route before and after the hazard.
Possible contributing conditions include settlement, root pressure, erosion, irrigation, base movement, slab curl, prior patches, or adjacent drains and thresholds.
Repair path, related trades, and photos
Repair options may include grinding, patching, partial replacement, drainage correction, or a broader walking-surface transition. Related concerns can include landscaping, irrigation, gates, handrails, accessibility, and resident access.
Send one wide path photo, a low-angle photo showing the height change, a tape-measure photo, close-ups of cracks or broken edges, and photos of nearby water, roots, gates, steps, or drains. A site evaluation is appropriate when safety, access, multiple locations, or managed-property coordination is involved.
Practical conclusion
Trip-hazard work should be scoped to the actual walking path. A quick surface correction may be right in some cases, but it should not ignore movement, drainage, thickness, texture, or the transition people actually walk across.