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Seattle permit evidence

Slope stabilization

Seattle slope-stabilization and shoring permit evidence, ECA context, and questions for assembling an engineering-led scope.

What this work is and when it enters the conversation

Slope stabilization is an objective, not a single construction product. Depending on the failure mechanism and site geometry, a design may address surface water, groundwater, erosion, grading, vegetation, soil reinforcement, piles, anchors, walls, or combinations of measures. A bid assembled before the mechanism is understood can solve the visible symptom while leaving the driver untouched.

The matching records explicitly mention slope stabilization, stabilizing a slope, or slope-related shoring. Because permit descriptions are short, readers should open each record and avoid assuming the same geology, design, or construction role applies to a new property.

  • New ground movement, scarps, settlement, or tension cracks appear
  • A wall failure is part of broader slope movement
  • Erosion or concentrated water is changing the slope
  • A geotechnical evaluation recommends structural or grading measures

Seattle permit and site questions

Seattle regulates work in environmentally critical areas under SMC 25.09; mapped layers are a screening context, not a parcel diagnosis.

Grading and structural scopes may require separate or coordinated review, monitoring, and inspections.

A permit exemption is not an engineering conclusion, and a mapped environmental layer is not a property assessment. Confirm the current path with SDCI for the actual address, dimensions, loads, grading, and proposed construction.

Calculated from selected records

What appears in this dataset

4matching companies
4matching permits
4documented neighborhoods
2021–2026issue-year span

Among records with a positive declared cost, the observed range is $10,000 to $300,000. These are permit declarations, not bids, invoices, final costs, or price guidance.

Compare companies with a matching permit description

The comparison is evidence, not endorsement. It shows each company’s matching permit count, documented neighborhoods, latest record, registration context, and exact public descriptions.

CompanySelected permitsDocumented neighborhoodsLatest matchVerification
True Scapes LLCWA #TRUESSL887PD

General contractor. Office listed in Seattle; 10 primary-scope Seattle permits observed since 2021.

1Rainier BeachJan 13, 2026Active through Nov 15, 2026Full profile →
View 1 selected permit record

Construct alterations to install geo grid slope stabilization measures and fence accessory to existing residence per plan.

7108703-CN · Completed · issued Jan 13, 2026 · Rainier Beach · $45,000Official Seattle record ↗
Kulchin Foundation Drilling CoWA #KULCHFD995QB

General contractor. Office listed in Lakewood (Pierce / South Sound); 5 primary-scope Seattle permits observed since 2021.

1North AdmiralJun 25, 2025Active through Nov 9, 2027Full profile →
View 1 selected permit record

Construct shoring and slope stabilization work adjacent to existing one family dwelling per plan.

6931926-CN · Issued · issued Jun 25, 2025 · North Admiral · $135,000Official Seattle record ↗
Integral Construction Inc.WA #INTEGCI159K3

General contractor. Office listed in Edmonds (North King / South Snohomish); 4 primary-scope Seattle permits observed since 2021.

1InterbayOct 21, 2022Active through Mar 16, 2028Full profile →
View 1 selected permit record

Construct new soldier pile retaining wall and stabilize slope adjacent to Single-Family Residence per plan.

6898935-CN · Completed · issued Oct 21, 2022 · Interbay · $300,000Official Seattle record ↗
Environmental Construction Inc.WA #ENVIRCI025BA

General contractor. Office listed in Lake Stevens (North Sound); 2 primary-scope Seattle permits observed since 2021.

1Lawton ParkNov 4, 2021Active through Jun 7, 2027Full profile →
View 1 selected permit record

Construct alterations to remove existing failing retaining wall and stabilize slope adjacent to Single-Family Residence per plan

6843661-CN · Completed · issued Nov 4, 2021 · Lawton Park · $10,000Official Seattle record ↗
True Scapes LLCWA #TRUESSL887PD

General contractor. Office listed in Seattle; 10 primary-scope Seattle permits observed since 2021.

Selected permits
1
Latest match
Jan 13, 2026
Documented neighborhoods
Rainier Beach
Active through Nov 15, 2026Full profile →
View 1 selected permit record

Construct alterations to install geo grid slope stabilization measures and fence accessory to existing residence per plan.

7108703-CN · Completed · issued Jan 13, 2026 · Rainier Beach · $45,000Official Seattle record ↗
Kulchin Foundation Drilling CoWA #KULCHFD995QB

General contractor. Office listed in Lakewood (Pierce / South Sound); 5 primary-scope Seattle permits observed since 2021.

Selected permits
1
Latest match
Jun 25, 2025
Documented neighborhoods
North Admiral
Active through Nov 9, 2027Full profile →
View 1 selected permit record

Construct shoring and slope stabilization work adjacent to existing one family dwelling per plan.

6931926-CN · Issued · issued Jun 25, 2025 · North Admiral · $135,000Official Seattle record ↗
Integral Construction Inc.WA #INTEGCI159K3

General contractor. Office listed in Edmonds (North King / South Snohomish); 4 primary-scope Seattle permits observed since 2021.

Selected permits
1
Latest match
Oct 21, 2022
Documented neighborhoods
Interbay
Active through Mar 16, 2028Full profile →
View 1 selected permit record

Construct new soldier pile retaining wall and stabilize slope adjacent to Single-Family Residence per plan.

6898935-CN · Completed · issued Oct 21, 2022 · Interbay · $300,000Official Seattle record ↗
Environmental Construction Inc.WA #ENVIRCI025BA

General contractor. Office listed in Lake Stevens (North Sound); 2 primary-scope Seattle permits observed since 2021.

Selected permits
1
Latest match
Nov 4, 2021
Documented neighborhoods
Lawton Park
Active through Jun 7, 2027Full profile →
View 1 selected permit record

Construct alterations to remove existing failing retaining wall and stabilize slope adjacent to Single-Family Residence per plan

6843661-CN · Completed · issued Nov 4, 2021 · Lawton Park · $10,000Official Seattle record ↗

What to settle before signing

Comparable words in a permit do not make two properties comparable. Ask bidders to define exclusions and connect their proposed method to the site investigation and approved documents.

  • A written description of the failure mechanism and design basis
  • Geotechnical, structural, civil, landscape, and contractor responsibilities
  • Temporary stabilization and wet-weather contingency plans
  • Instrumentation, observations, inspections, and closeout documentation

Re-open the contractor’s current Washington registration, bond, and insurance record before a decision. Confirm that the legal entity and license on the contract match the entity whose evidence you reviewed here.

Continue the research

Official sources

  1. Environmentally Critical Areas CodeSeattle Department of Construction & Inspections
  2. Grading PermitSeattle Department of Construction & Inspections
  3. Retaining Walls & RockeriesSeattle Department of Construction & Inspections