Construct repairs to existing retaining wall with helical anchors per plan. Review and process 7018832-CN under this permit.
7015480-CN · Completed · issued Nov 7, 2024 · West Queen Anne · $52,197Official Seattle record ↗← All work types
Seattle permit evidence
Underpinning and helical piers
Seattle underpinning, helical-anchor, push-pier, and pin-pile permit evidence connected to foundations and retaining structures.
What this work is and when it enters the conversation
Underpinning transfers or supplements support beneath an existing foundation or retaining structure. Helical elements, push piers, pin piles, anchors, and other systems behave differently and depend on design loads, installation criteria, access, existing construction, utilities, and verified field response. Product names alone do not define a complete repair.
Matches require explicit underpinning, pier, pile-foundation repair, or helical-anchor language in a selected permit. Some records combine foundation and retaining-wall work; the official link is included so readers can see the stated scope instead of assuming every project was the same system.
- Documented settlement affects a foundation or supported wall
- Existing support must be transferred during adjacent work
- A structural and geotechnical evaluation selects deep support
- Access constraints favor a small-installation-footprint system
Seattle permit and site questions
Underpinning is engineered structural work; confirm design, inspection, and field-verification requirements in the approved permit.
Ask how installation reactions, vibration, utilities, and temporary support are addressed for the existing building.
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
3matching companies
4matching permits
4documented neighborhoods
2023–2025issue-year span
Among records with a positive declared cost, the observed range is $25,000 to $54,300. 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.
| Company | Selected permits | Documented neighborhoods | Latest match | Verification |
|---|---|---|---|---|
| GroundworksWA #GROUN**763O5 General contractor. Office listed in Virginia Beach, outside the core region; 5 primary-scope Seattle permits observed since 2021. | 2 | West Queen Anne, Fremont | Nov 7, 2024 | Active through Oct 29, 2026Full profile → |
View 2 selected permit recordsConstruct alterations to install push piers helical anchors and tie-rods to support existing retaining wall and foundation of single-family residence per plan. 6953194-CN · Completed · issued Jul 3, 2024 · Fremont · $54,300Official Seattle record ↗ | ||||
| Terrafirma Foundation Rpr Inc.WA #TERRAFR931LH General contractor. Office listed in Roseburg, outside the core region; 4 primary-scope Seattle permits observed since 2021. | 1 | Stevens | Oct 1, 2023 | Active through Jun 16, 2027Full profile → |
View 1 selected permit recordConstruct site retaining wall & foundation repairs to existing one-family dwelling per plan 6941728-CN · Completed · issued Oct 1, 2023 · Stevens · $50,000Official Seattle record ↗ | ||||
| Dochnahl Construction Inc.WA #DOCHNC*241R9 General contractor. Office listed in Renton (South King); 2 primary-scope Seattle permits observed since 2021. | 1 | Leschi | Feb 3, 2025 | Active through Jul 3, 2028Full profile → |
View 1 selected permit recordConstruct retaining walls and pin pile foundation repair to existing one-family dwelling per plan 6967982-CN · Expired · issued Feb 3, 2025 · Leschi · $25,000Official Seattle record ↗ | ||||
General contractor. Office listed in Virginia Beach, outside the core region; 5 primary-scope Seattle permits observed since 2021.
- Selected permits
- 2
- Latest match
- Nov 7, 2024
- Documented neighborhoods
- West Queen Anne, Fremont
View 2 selected permit records
Construct repairs to existing retaining wall with helical anchors per plan. Review and process 7018832-CN under this permit.
7015480-CN · Completed · issued Nov 7, 2024 · West Queen Anne · $52,197Official Seattle record ↗Construct alterations to install push piers helical anchors and tie-rods to support existing retaining wall and foundation of single-family residence per plan.
6953194-CN · Completed · issued Jul 3, 2024 · Fremont · $54,300Official Seattle record ↗General contractor. Office listed in Roseburg, outside the core region; 4 primary-scope Seattle permits observed since 2021.
- Selected permits
- 1
- Latest match
- Oct 1, 2023
- Documented neighborhoods
- Stevens
View 1 selected permit record
Construct site retaining wall & foundation repairs to existing one-family dwelling per plan
6941728-CN · Completed · issued Oct 1, 2023 · Stevens · $50,000Official Seattle record ↗General contractor. Office listed in Renton (South King); 2 primary-scope Seattle permits observed since 2021.
- Selected permits
- 1
- Latest match
- Feb 3, 2025
- Documented neighborhoods
- Leschi
View 1 selected permit record
Construct retaining walls and pin pile foundation repair to existing one-family dwelling per plan
6967982-CN · Expired · issued Feb 3, 2025 · Leschi · $25,000Official 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.
- Design loads, acceptance criteria, and the responsible engineer
- Installation logs, torque or load testing, and rejected-element procedure
- Connections to existing construction and temporary support
- Access openings, utilities, interior repair, and final 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
- Retaining Walls & Rockeries ↗Seattle Department of Construction & Inspections
- Grading Permit ↗Seattle Department of Construction & Inspections