Concrete Retaining Walls in Duvall, WA

Retaining walls in Duvall: what to know

Duvall’s permit chapter covers the construction and repair of a structure, and the city’s FAQ asks whether a permit is required for each project. The city’s pages we read set no height cutoff for walls, so we confirm with the city whether your wall needs a permit. We measure its height and any slope or load behind it before we quote.

Drainage behind the wall needs its own answer. We route the drain to an outlet on your own lot, never toward a neighbor’s slope or the street, and we confirm any connection to a city system with Public Works. We also confirm the sensitive-areas rules that apply to your parcel before we dig near a creek or a wetland.

Permits and rules in Duvall

We confirm with Duvall whether the wall needs a permit under DMC Chapter 10.01 before we quote, and whether a surcharge from a slope, driveway, or structure changes that answer. The city’s notice to owners says a person hired to install, repair, or construct must apply for their own permit, so we confirm who applies for the wall permit. We also confirm the sensitive-areas rules for the parcel and the business license requirement for contractors.

Rules change and vary by parcel, so we confirm the current requirements with the city before we start.

How we approach it

Measure the wall height and record any slope, driveway, or structure behind it
Confirm whether the wall needs a permit under DMC Chapter 10.01 before design
Route the wall drain to an outlet on your own lot
Check the sensitive-areas rules for the parcel before digging near water

For the full process, see our Retaining Walls page.

Building in the cold months? See our guide to winter concrete pours.

Our retaining walls work, serving Duvall

Examples of our work. We build retaining walls in Duvall and the cities around it. See all of our work

Questions from Duvall homeowners

Does a retaining wall in Duvall need a permit?

It depends on the wall and the site. The city’s permit chapter covers the construction and repair of a structure, and the city’s pages we read set no height cutoff, so we confirm with the city for your address before we quote.

Does a hillside behind a Duvall wall change the permit answer?

We confirm that with the city. A slope, driveway, or structure that loads the top of the wall may matter to the permit answer, so we measure it before we design the wall.

Where should a Duvall retaining wall drain go?

To an outlet on your own property, away from the street and any neighbor’s slope. The outlet gets checked before anything is built, and any connection to a city system goes to Public Works first.