Compare Leschi retaining-wall contractors across nine selected permits, with four completed cases covering parking, site work and stepped-wall replacement.
Compare Leschi retaining-wall contractors by the recorded work
A Leschi search can begin with a failing wall, foundation movement, drainage, or a mapped slope concern before the appropriate construction method is known. This neighborhood hub keeps those questions together, then routes readers into a specific work type only when the public evidence supports it.
The comparison contains nine selected permits and eight companies: six records are Completed, one is Issued, one is Expired and one is Withdrawn. On October 25, 2026, a broader search inside the City's Leschi boundary found 18 permits issued since 2021 with wall, rockery, slope or foundation-shoring scopes. The selected comparison is not a complete neighborhood contractor register. Four completed records are examined in detail below; two are different projects from the same company.
The four case studies' Portal licenses, inspection-closeout dates and selected application answers were rechecked on October 25, 2026. Their three companies' exact L&I registration identities, statuses and expiration dates were also rechecked. Other registration, bond, insurance, Verify and Portal sources retain their individual dates. Blank contractor names in open data are resolved only by the separately linked Portal license disclosures; a permit connection does not establish workmanship, present availability or who performed every trade.
A second replacement example, Completed rockery permit 6825780-CN, displays historical license OLYMPRC851CZ. The exact L&I registration is RE-LICENSED; a current active registration linked to that legal entity was not established in this review. The permit remains useful historical context, but does not identify a second currently active replacement contractor to compare with Greenway.
Start with the intended work: new construction, alteration, replacement, repair, removal or foundation support. True Scapes' two construction projects, Design by Oz's retaining structures, Greenway's stepped-wall replacement and Groundworks' issued underpinning record answer different questions. Ask each company which work it performed, then compare the same investigation, design, drainage, access and inspection responsibilities in the proposed scope.
From permit to comparison
Completed Leschi wall cases in detail
Each case connects a public construction permit to its displayed contractor license and an L&I registration check. Application answers describe the submitted project; they are not independent site findings. Completed status and an inspections-completed date do not certify workmanship, present condition or responsibility for every trade.
Remove failed retaining wall and replace with stepped retaining walls subject to field inspection.
Permit issued
Jul 14, 2026
Inspections completed
Sep 18, 2026
Portal contractor license
GREENLD913KL
Permit details checked
Oct 25, 2026
L&I registration checked
Oct 25, 2026 · ACTIVE
What the application records
Recorded location within the site
West property edge beside an existing sidewalk and parking strip; street address omitted.
Right-of-way work declared
Yes
ECA answer in the application
No
Review level
Field; permit remarks state OK for STFI.
How to use this comparison
For a replacement beside a sidewalk, ask how demolition, temporary support, the stepped layout, public access, drainage and restoration fit into one scope. Identify the separate right-of-way records and the party responsible for that coordination.
What remains unknown. The short record does not identify wall material, dimensions, drainage details or the SDOT permits actually issued. The application's ECA answer is a recorded declaration, not an independent parcel assessment.
Construct new retaining wall and establish parking area accessory to existing single family residence per plan.
Permit issued
Aug 7, 2022
Inspections completed
Jan 9, 2024
Portal contractor license
TRUESSL887PD
Permit details checked
Oct 25, 2026
L&I registration checked
Oct 25, 2026 · ACTIVE
What the application records
Parking and street elements declared
One proposed onsite parking space and one curb cut.
Right-of-way work declared
Yes
ECA answer in the application
Yes
Application disturbance answers
More than 750 sq ft of new/replaced hard surface and more than 2,000 sq ft of earth disturbance: Yes to both.
How to use this comparison
A wall-and-parking proposal needs coordinated grades, vehicle-load assumptions, access geometry, drainage and street-interface work. Ask which drawings cover the wall and parking together, and who prices excavation, curb work, inspection and restoration.
What remains unknown. The application fields do not establish wall height, material, actual earthwork quantities or the contractor's role in every trade. They do not make another Leschi parking project subject to the same permit path.
Construct retaining wall and site improvements accessory to a single-family residence per plans
Permit issued
Jun 14, 2021
Inspections completed
Oct 20, 2022
Portal contractor license
TRUESSL887PD
Permit details checked
Oct 25, 2026
L&I registration checked
Oct 25, 2026 · ACTIVE
What the application records
Work recorded
Retaining wall and site improvements accessory to a single-family residence.
Right-of-way work declared
No; the application lists zero curb cuts.
ECA answer in the application
Yes
Review level
Full +
How to use this comparison
This second True Scapes record gives a different comparison from its wall-and-parking job: site improvements with no right-of-way work declared. Ask for the boundary between wall construction, grading, paving, landscaping, drainage and restoration so that site-work allowances can be compared.
What remains unknown. The description does not enumerate the site improvements or name the wall system. It is a second project from the same contractor, not an additional company or proof of completed wall replacement.
Retaining structures and site work south of a residence
Construct site work and retaining structures to existing single family residence per plan.
Permit issued
Sep 12, 2023
Inspections completed
May 22, 2024
Portal contractor license
DESIGOL826N9
Permit details checked
Oct 25, 2026
L&I registration checked
Oct 25, 2026 · ACTIVE
What the application records
Recorded location within the site
Within property boundaries, south of the existing residence; street address omitted.
Other-information entry
The Portal labels the floor or area South Site Retaining Wall and the occupancy group Retaining Wall.
Right-of-way work declared
No
ECA answer in the application
Yes
How to use this comparison
Use this as a retaining-structure and site-work example. Ask which structure the company built, which approved details governed excavation and drainage, and what survey, access, neighboring-property and inspection responsibilities belong in the proposal.
What remains unknown. Neither the short description nor the Portal's administrative construction-type field establishes a concrete, segmental, cantilever or other wall system. The record does not say this was replacement of an existing wall.
The matched neighborhood boundary has 17.27% steep-slope overlap and 39.86% potential-slide-area overlap. It also contains 85 historical known-slide event points. Those figures make slope, groundwater, surface-water control, and temporary excavation reasonable screening topics, but they do not determine a parcel's status or present stability.
Where a proposed repair uses soil nails, piles, anchors, or other deep elements, the scope should identify subsurface investigation, design ownership, testing, utilities, neighboring-property rights, construction observation, and the assumptions used for access and equipment.
17.27%Steep slope
39.86%Potential slide area
1.21%Known-slide affected property
4.32%Liquefaction-prone area
The matched neighborhood boundary contains 85 historical known-slide event points across source years 1897, 1909, 1920, 1925, 1927, 1928, 1933, 1934, 1936, 1937, 1938, 1942, 1948, 1949, 1951, 1953, 1955, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1966, 1970, 1980, 1983, 1984, 1986, 1990, 1991, 1995, 1997, 1999, 2001, 2002, 2018. Points may be incomplete or generalized and do not establish a current condition at a nearby property.
Neighborhood × work type
Open the relevant work in Leschi
A dedicated local page appears only where the selected records clear the publication threshold. Other cards lead to the broader work-type page and state that the local evidence is limited.
Eight companies with matching detailed Portal licenses appear below. Three Completed construction records support the local construction page; the completed replacement, completed alteration, completed removal, issued foundation work and two adverse records remain distinct evidence. Do not turn every entry into a completed new wall.
General contractor. Office listed in Seattle; 10 primary-scope Seattle permits observed since 2021.
2
Completed permits 6845348-CN and 6806003-CN describe a new wall with a parking area and a wall with site improvements. Both Portal records display TRUESSL887PD. They are two examples from one company, not two contractors.
General contractor. Office listed in Virginia Beach, outside the core region; 5 primary-scope Seattle permits observed since 2021.
1
Issued permit 7067831-CN describes foundation underpinning with push piers, concrete-capped piles and a helical tieback. Portal license GROUN**763O5 matches Groundworks; this is not a Completed wall-construction example.
General contractor. Office listed in Seattle; 4 primary-scope Seattle permits observed since 2021.
1
Completed permit 6942478-CN describes site work and retaining structures. Portal license DESIGOL826N9 matches Design by Oz. The brief description does not establish material, wall system or trade responsibility.
General contractor. Office listed in Snohomish (Snohomish County); 1 primary-scope Seattle permit observed since 2021.
1
Completed permit 7142463-CN describes removing a failed retaining wall and replacing it with stepped walls. Portal license GREENLD913KL matches the active Greenway registration; the closeout date displayed is September 18, 2026.
General contractor. Office listed in Seattle; 10 primary-scope Seattle permits observed since 2021.
Selected permits
2
Latest match
Aug 7, 2022
Recorded neighborhood work
Completed permits 6845348-CN and 6806003-CN describe a new wall with a parking area and a wall with site improvements. Both Portal records display TRUESSL887PD. They are two examples from one company, not two contractors.
Active through Nov 15, 2026Full profile →View 2 selected permit records
Construct new retaining wall and establish parking area accessory to existing single family residence per plan.
General contractor. Office listed in Virginia Beach, outside the core region; 5 primary-scope Seattle permits observed since 2021.
Selected permits
1
Latest match
Jun 3, 2025
Recorded neighborhood work
Issued permit 7067831-CN describes foundation underpinning with push piers, concrete-capped piles and a helical tieback. Portal license GROUN**763O5 matches Groundworks; this is not a Completed wall-construction example.
Active through Oct 29, 2028Full profile →View 1 selected permit record
Install push piers concrete capped piles and helical tieback to underpin existing residential foundation per plan.
General contractor. Office listed in Seattle; 4 primary-scope Seattle permits observed since 2021.
Selected permits
1
Latest match
Sep 12, 2023
Recorded neighborhood work
Completed permit 6942478-CN describes site work and retaining structures. Portal license DESIGOL826N9 matches Design by Oz. The brief description does not establish material, wall system or trade responsibility.
Active through Oct 4, 2028Full profile →View 1 selected permit record
Construct site work and retaining structures to existing single family residence per plan.
General contractor. Office listed in Snohomish (Snohomish County); 1 primary-scope Seattle permit observed since 2021.
Selected permits
1
Latest match
Jul 14, 2026
Recorded neighborhood work
Completed permit 7142463-CN describes removing a failed retaining wall and replacing it with stepped walls. Portal license GREENLD913KL matches the active Greenway registration; the closeout date displayed is September 18, 2026.
Active through Jun 30, 2027Full profile →View 1 selected permit record
Remove failed retaining wall and replace with stepped retaining walls subject to field inspection.