Retaining wall construction in Sunset Hill

Three completed records with three exact license matches

The official neighborhood search found three construction-worded retaining-wall records since 2021. All three are Completed, each detailed Seattle Services Portal record displays a Contractor License number, and each number exactly matches an active Washington L&I registration at the September 13, 2026 review.

The descriptions are still not interchangeable: one combines a new wall with replacement of part of a failed concrete-rubble wall, one describes a new rear-yard wall, and one combines a wall with site improvements. The records support discovery and scope questions, not a workmanship ranking or an assumption that all three companies build the same wall systems.

Neighborhood-specific context

Slope and access questions behind the Sunset Hill records

The neighborhood aggregate maps 15.04% steep-slope overlap, 15.24% potential-slide-area overlap, 1.46% known-slide-affected-property overlap, 16.47% liquefaction-prone-area overlap, and 38 historical event points. Those figures make parcel-level mapping and site access important screening steps, but they do not diagnose any address.

A rear-yard or replacement wall can change the bid materially when equipment access is narrow, existing rubble or unsuitable soil must be removed, temporary support is needed, or drainage lacks a lawful outlet. Use the same survey and approved design for every bid, and separate structural wall work from demolition, hauling, erosion control, utilities, landscape restoration, and inspection responsibilities.

Open the complete Sunset Hill geology and neighborhood evidence →

Companies in the selected Sunset Hill retaining wall construction records

Each company is represented by one completed permit. Declared costs reflect permit declarations for different scopes and are not presented as comparable bids or neighborhood prices.

Questions raised by these local records

• What existing material must be removed, and are disposal quantities, unsuitable soil, and restoration included or allowed?
• Can equipment reach the wall, and who prices hand work, temporary access, shoring, wet-weather protection, and protection of neighboring improvements?
• Does the parcel intersect an ECA or liquefaction-prone mapping that changes investigation, design, or construction requirements?
• Where will wall drainage and upslope runoff discharge lawfully, and how can the system be maintained after construction?
• Are bidders pricing the same wall system, geometry, surcharge, guard conditions, inspections, and professional observations?

Guides supporting this local retaining wall construction page

Other Seattle retaining wall construction neighborhoods