Concrete Retaining Walls in Stanwood, WA

Retaining walls in Stanwood: what to know

The footing and the top of the wall fix its height, and both are marked on the first drawing. Under the state rule, the count starts at the footing base and runs up to the wall’s crest. Fill or a slope pressing on the wall is treated as a surcharge until we measure it, and a short wall with a surcharge falls outside the state exemption. We record each slope, structure, and load behind the wall, with its distance from the wall face, so the reviewer can judge it.

Stanwood’s grading section runs separately from the wall rule. Cut and fill tied to a retaining wall over two feet high are counted under SMC 18.830.020, and the volume counts toward the 50 cubic yard figure for that 12-month period. A footing dug deeper than two feet also reaches the depth line in that section. The wall drain and outlet are drawn on the section, so the build follows the drawing rather than a field estimate.

Permits and rules in Stanwood

Walls beyond the state exemption go to review with their height, surcharge, and grading volume listed on one sheet. Where a wall needs a permit, we arrange plans by a Washington-registered engineer, and we confirm with the city whether the two-foot grading count changes the submittal. We check the outlet location and the wall drain against the section during that review, so the wall is judged as one system.

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

How we approach it

Fix footing depth and wall top on the first drawing
Treat fill and slopes behind the wall as surcharges
Add each wall’s cut and fill to the 12-month count
Carry the drain behind the wall to a clear outlet

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 Stanwood

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

Questions from Stanwood homeowners

Where does a Stanwood wall stop being exempt from the state permit?

The state exemption covers a wall that stands four feet or less from its footing base, unless a surcharge presses on it or it holds back a flammable or combustible liquid. A wall over two feet high still counts its cut and fill under SMC 18.830.020, so we confirm the city’s answer for your lot.

What does soil pressing against a Stanwood wall do to the review?

Soil that presses on the wall counts as a surcharge, and a short wall with a surcharge falls outside the state exemption. We measure the fill and its slope before answering, then decide whether the wall goes to review.

Do Stanwood retaining walls need engineered drawings?

For any wall that goes to review, we arrange sealed drawings through a Washington-registered engineer. We also confirm with the city which drawings it requires, and we keep the outlet and backfill details in the same set so the submittal stays consistent.