Retaining Walls
Structure, beauty, and confidence.
Structure, beauty, and confidence in one wall. Drainage, load support, and erosion control are designed in — not bolted on after. Want to see what your slope could look like? Try the free AI render tool below.
What we build
Everything retaining walls covers.
- Site-specific custom walls (block, stone, timber)
- Stepped walls for sloped lots
- Drainage systems behind every wall
- Load-bearing engineering for tall walls
- Seat walls and tiered planters
- Erosion control on hillside properties
- Integration with patios and walkways
How it works
From free site visit to finished install.
01
Free site visit
We look at the grade, the soil, where water moves, and what the wall needs to hold back.
02
AI render + range
Try the free AI render tool below to see your slope transformed. Get a price range before we even leave the driveway.
03
Locked quote
Once scope is set, the quote is locked. No upfront payment required.
04
Install + 5-year warranty
Excavation, base, drainage, wall, backfill, cleanup. 5-year warranty on the install.
Recent retaining walls work
Common questions
What people ask before they book retaining walls.
How much does a retaining wall cost?
Retaining walls in our area typically run $10,000–$30,000. The drivers are wall height, soil conditions, drainage requirements, and material (block, stone, or timber).
How tall can you build a retaining wall?
Standard residential walls run 2–4 feet. For walls above 4 feet we engineer with stepped or tiered designs, geogrid reinforcement, and drainage systems built in. Tall walls require permits — we handle that.
Why do retaining walls fail, and how do you prevent it?
Walls fail because drainage was an afterthought. We design drainage first — perforated pipe behind the wall, crushed gravel backfill, weep holes where needed — then build the wall around that system.
Do retaining walls come with a warranty?
Yes, 5-year warranty on every retaining wall install. Warranty terms attach to your signed contract.
Do you require an upfront payment?
No. We never require upfront payment. The free site visit gives you a locked quote, and you're not invoiced until the work is complete.
What areas do you serve?
We work the I-5 corridor from Canby (our HQ) through Aurora, Hubbard, Oregon City, West Linn, Wilsonville, Tualatin, Sherwood, Lake Oswego, Portland, and Salem.
Are you licensed and insured?
Yes. GI Landscape is CCB # 224884, fully licensed, bonded, and insured in the state of Oregon.
Warranty
5-year warranty on all retaining walls installs.
Warranty terms attached to your signed install contract. No upfront payment required.
Retaining wall· how we build it
The GI Retaining Wall System —
Drainage first, then everything else.
Most retaining walls in our climate fail because of drainage, not strength. Our walls are built drainage-first — every wall has a perforated drain pipe at the base, a clean-rock chimney behind the blocks, and filter fabric keeping soil out of the drainage system.
Most retaining walls in our climate fail because of drainage, not strength. Water pressure builds up behind the wall, freezes in winter, and pushes blocks out of alignment within a few years. Our walls are built drainage-first. A 6-inch compacted foundation rock pad sits at the base with a 3/4-inch crushed leveling layer on top — every block above is level because this layer is level. A 4-inch perforated pipe runs along the base sloped 1% to daylight, and a chimney of 3/4 to 1-1/2 inch clean drain rock is packed directly behind the blocks so water moves down through the rock to the pipe instead of into the wall. Filter fabric separates the drain rock from the backfill soil so soil can't wash in and clog the system. The cap is glued to the top course with construction adhesive to shed water off the top. Walls taller than 4 feet get engineered drawings and permits — code requirement, not optional.
Drainage first
Built drain-out, not dam-in
Engineered if needed
Permits + stamped drawings on tall walls
40-year design life
Done right, walls last decades
5-year warranty
Workmanship in writing
Free AI render tool
See your retaining wall rendered in 30 seconds.
Upload a photo of your slope, pick your scope, and our tool shows you what the finished wall could look like — plus a real price range. Free. No email required to see the render.
Free quote. No upfront payment.
Same-week site visits.
Veteran, senior, and neighbor discounts available — ask at your free site visit.