Retaining Walls in Redmond, WA
Seattle ConcreteCONTRACTORS
(206) 566-0528
Need a retaining wall in Redmond? Here’s how we plan walls around slope and water, when permits and engineering apply, and typical cost ranges.
- Drain rock, pipe and outlet behind every wall
- Engineering and permits flagged early
- Steps and patios tied in where needed
Get a retaining wall quote in Redmond
Tell us about the project. We’ll call or email to talk it through.
Retaining Walls for Redmond properties
A retaining wall holds back soil and the water in it. Water is the part people underestimate. When the soil behind a wall stays saturated through a Seattle winter, the pressure on it climbs, and walls built without drainage lean, crack and eventually fail. Every wall we plan starts with where the water goes.
1970s through 2000s subdivisions, townhomes, and new construction around downtown and Overlake. We work across Education Hill, Grass Lawn, Overlake, Idylwood, Bear Creek, Willows/Rose Hill, Redmond Ridge and downtown.
Level yards
Turning a slope into usable lawn or patio space.
Driveway cuts
Holding back soil beside a driveway or parking pad.
Terraced beds
Lower walls in steps for planting.
Redmond conditions that affect your retaining wall
Slope and access
Education Hill and the hills around Overlake and Bear Creek have sloped lots and stepped back yards, which brings retaining walls and steps into many projects.
Soil and settling
The Sammamish valley floor has softer river soils and a higher water table than the surrounding hills. Valley-floor slabs need extra attention to base depth and drainage.
Rain and drainage
Downspouts and yard drains that empty onto the driveway or patio are a common reason slabs settle and grow moss. We plan where water goes before we pour.
Details that help us price your retaining wall in Redmond
You don’t need answers to all of these. They’re the questions that shape the design and the price.
Height and length
Tallest point and rough length. Height counts from the bottom of the footing.
What’s above
A driveway, house, fence or slope above the wall adds load.
Water
Wet spots, seeps or water running down the slope in winter.
Property line
How close the wall is to a neighbor.
Existing wall
Photos of any old wall, rockery or timbers to remove.
Access
Can equipment get in, or is it hand work?
Options to talk through
| Type | Good for | Keep in mind |
|---|---|---|
| Poured concrete | Driveway cuts, taller walls, tight spots near property lines | Needs a footing, forms and cure time; can be smooth or board-formed |
| Concrete block (CMU) | Structural walls with a stone, stucco or painted face | Reinforced and grouted on a footing |
| Segmental block | Garden terraces and lower walls | Taller walls need geogrid back into the slope |
Permits for retaining walls in Redmond
Under the building code used across Washington, retaining walls over 4 ft measured from the bottom of the footing to the top of the wall, or walls holding back a surcharge such as a driveway or slope, generally need a permit and often an engineered design. Redmond’s Development Services Center makes the call for your property, and we’ll tell you what we expect before you commit.
Planning a retaining wall in Redmond?
Call to talk it through, or send a few details and photos.
What retaining walls typically cost in the Seattle area
Ballpark numbers help you plan a budget before anyone visits. Use them as a starting point, not a promise.
| Wall type | Typical range |
|---|---|
| Poured concrete, up to 4 ft | $80–$150 per linear ft |
| Poured concrete, 4–8 ft (engineered) | $150–$300+ per linear ft |
| CMU block wall | $60–$120 per linear ft |
| Segmental retaining block | $40–$90 per linear ft |
| Engineering and permit fees (walls over 4 ft) | add $2,000–$5,000 |
Typical market ranges, not a quote from Seattle Concrete Contractors. These are ranges other Seattle-area concrete contractors publish for this work (Seattle Concrete (seattleconcrete.com) service pages (another Seattle wall builder lists $30–$100 per sq ft of wall face by type), checked November 2026). Your price depends on size, access, removal, base work, finish and permits, and on conditions at your Redmond property. We give a written quote after we understand the job.
Retaining Walls in Redmond: quick answers
Do I need an engineer?
For taller walls, walls with load above them, and walls in critical areas, usually yes. We’ll tell you early.
Why do retaining walls lean?
Usually water pressure behind a wall with no drainage, or a footing that’s too small for the soil.
Do I need a permit for concrete work in Redmond?
Ground-level patios and walks are often exempt, but retaining walls over 4 ft from the bottom of the footing and anything in the right-of-way, such as sidewalks and driveway aprons, need permits. Redmond’s Development Services Center can confirm for your lot.
Learn more about retaining walls
See the full retaining walls guide, or all concrete services in Redmond.
More concrete services in Redmond
Tell us about your project
A few photos and rough measurements are enough to start. If you’re not sure what the job needs, describe the problem and we’ll talk it through.
Call (206) 566-0528 or use the quote form at the top of this page.
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Seattle Concrete Contractors | (206) 566-0528 | Seattle, WA