Plan well. Hire locally.
Retaining walls in Duncan: boundary checks, approvals and a clear project scope
Identify the responsible municipality before asking a contractor to price the wall.
VITD editorial team · Sources reviewed September 12, 2026
Start with the property boundary
Duncan’s planning page links to a City-boundary check. Use it first: a Duncan postal address may put your property under a different local authority. For properties inside the City, the building department points owners to its permit guide and offers help determining the required approvals.
The City’s published guide identifies retaining walls greater than 1.2 metres and any retaining wall in a Hazard Lands Development Permit Area. Confirm the current requirements for the site with the department. Give bidders the same wall dimensions, access information and drainage brief, and ask who handles the design, application and any changes needed after review.
A practical order of work
- 01
Record the whole site
Photograph the wall line, boundaries, nearby structures and access. Record approximate heights and tier spacing for the initial discussion; use professionally prepared measurements when required.
- 02
Confirm the approval path
Check the applicable City guidance and ask which permits, drawings and design professionals your site needs before booking construction.
- 03
Compare one agreed scope
Send the same brief to contractors. Ask who supplies design, excavation, drainage, materials, disposal and reinstatement.
What should the quote include?
These are comparison headings, not a published local price estimate. Ask each business to separate the same costs and identify allowances and exclusions.
- Design and survey information
- Excavation and site access
- Wall materials and delivery
- Drainage and backfill
- Disposal and landscape reinstatement
Three questions worth asking
- Who is responsible for the design and permit application?
- How are unexpected ground conditions priced?
- What inspections and completion records are included?
Who can help in Duncan?
These are local directory matches by trade. Confirm experience with this specific type of project before hiring.
Excavation
- Construction Drilling Inc.
Excavation & Civil Works
- Khowutzun Development Corporation
Excavation & Civil Works
- Ravenstone Construction Ltd.
Excavation & Civil Works
More planning guides for Duncan
Sources and scope
This guide helps you prepare questions and compare work. Your municipality determines approvals for the property and proposed scope; confirm current requirements before starting.