We are Your Beaverton Retaining Wall Construction Company

Beaverton straddles the transition between the flat Tualatin Valley floor and the elevated terrain of Cooper Mountain and Sexton Mountain, creating a range of retaining wall conditions within a single city. The valley areas contend with the same heavy clay soils found throughout the Tualatin Valley, while the higher-elevation neighborhoods face steeper grades with weathered basalt and volcanic soils. Prodan Construction builds retaining walls throughout Beaverton that are engineered for the specific terrain zone where your property sits — whether that means managing swelling clay in the Fanno Creek lowlands or anchoring into volcanic material on Cooper Mountain’s slopes. As Beaverton continues to grow past 100,000 residents, the demand for quality retaining wall construction has never been higher. Contact us at (503) 773-6949 for your free Beaverton retaining wall estimate.

A Good Retaining Wall Needs a Solid Construction at All Levels

Assuming that all retaining walls can be built the same way is an error that Beaverton’s varied terrain quickly punishes. A wall foundation designed for the firm volcanic soils on Sexton Mountain will fail in the soft, expansive clay along Beaverton Creek, and a drainage system sized for the well-drained Cooper Mountain slopes will be overwhelmed by the water volumes that accumulate in the valley-floor neighborhoods. Prodan Construction begins every Beaverton project with a site assessment that identifies the soil type, drainage behavior, and structural demands specific to the property, because that initial understanding drives every subsequent design and construction decision.

Retaining wall construction in Beaverton follows our proven approach with site-specific modifications for local conditions. In the clay-heavy valley-floor neighborhoods, we over-excavate and install generous gravel base layers — ten or more inches of compacted angular stone — to create a stable, well-drained foundation below the clay’s active zone. In the higher elevations on Cooper Mountain and Sexton Mountain, foundations may be shallower but are designed to handle steeper slopes and the greater lateral pressures that come with elevated terrain. Drainage systems behind the wall are sized for each zone’s specific water management needs. The first course locks below grade, and each course follows precise batter angles with geogrid reinforcement calculated for the actual earth pressures the wall will encounter in Beaverton’s soil conditions.

Beaverton’s growth — including the Cooper Mountain urban reserve development — is generating new retaining wall construction across the city. Prodan Construction serves both new construction projects and established Beaverton homeowners who need walls that handle the challenges their specific soil conditions present, delivering engineered solutions that last.

Prodan Construction is Your Beaverton Retaining Wall Repair Company

Beaverton’s mixture of heavy clay soils and sloping terrain makes it a frequent source of retaining wall repair work for our crews. Valley-floor walls fail from clay expansion overwhelming under-designed drainage systems, while hillside walls on Cooper Mountain and Sexton Mountain fail from undermining or foundation settlement on volcanic soils. Prodan Construction diagnoses and repairs both types of failures throughout Beaverton, targeting the root cause — whether drainage, foundation, or soil — rather than just patching visible damage. The expansive clay in lower Beaverton is particularly destructive to walls that lack robust drainage, and we see walls here that have been pushed off their foundations in as little as five to ten years when drainage was omitted or undersized. Get ahead of the damage by calling (503) 773-6949 when you first notice signs of wall movement on your Beaverton property.

What People We’ve Worked with have to Say About Us

Beaverton homeowners trust Prodan Construction for retaining wall projects that deliver lasting results in the Tualatin Valley’s challenging conditions. Our five-star reviews reflect our commitment to building walls that actually work in these soils. Here is what our Beaverton-area clients say:

Cody K. — “Prodan and his team were great to work with! They were very professional and did an amazing job on our retaining wall. The wall looks fantastic and has held up perfectly. Highly recommend Prodan Construction to anyone in need of a retaining wall or any other construction work.”

Ashley B. — “We had Prodan Construction build a retaining wall in our backyard and we couldn’t be happier with the results! The crew was punctual, hardworking, and respectful of our property. They completed the project on time and on budget. The wall is solid and looks amazing. Thank you Prodan Construction!”

Vickie D. — “Prodan Construction did an outstanding job on our retaining wall project. From the initial consultation to the final walkthrough, they were professional and communicative every step of the way. The quality of their work is evident in the finished product. We would absolutely hire them again.”

Lon M. — “I hired Prodan Construction to replace an old failing retaining wall on my property and they exceeded my expectations. The new wall is rock solid and looks incredible. Their team was knowledgeable, efficient, and left the site cleaner than they found it. Five stars all the way.”

Our Beaverton Retaining Wall Construction Company FAQ

How do you build a retaining wall?

Beaverton’s mixed terrain — from Tualatin Valley clay to Cooper Mountain slopes — requires a flexible construction approach. Our standard retaining wall process includes:

Foundation preparation: We excavate to stable bearing material and install a compacted gravel base that provides both structural support and drainage for the wall footing.
First course and base construction: The first course of block, stone, or concrete is set below the finished grade to anchor the wall and resist lateral sliding forces from the retained earth.
Wall construction with drainage: Each course is built with proper setback (batter) and backfilled with drainage aggregate. Perforated pipe at the base collects and redirects groundwater away from the wall.
Reinforcement and backfill: For taller walls, geogrid reinforcement layers tie the wall into the retained soil mass. Final backfill is compacted in lifts to prevent settlement.
Drainage completion and grading: Surface drainage is directed away from the wall, drain outlets are verified functional, and the site is graded to finished specifications.

Do I need a structural engineer for a retaining wall?

The City of Beaverton handles building permits for retaining walls exceeding four feet in exposed height. Cooper Mountain developments have specific area plan requirements that may affect wall design and construction. The city’s active Neighborhood Association Committees participate in development review, which can influence project timelines. Structural engineering is recommended for walls in Beaverton’s heavy clay zones even at moderate heights, as the expansive soil pressures can surprise designers who are not familiar with Tualatin Valley conditions. Prodan Construction handles all permitting and engineering for our Beaverton projects.

How do you know when you need a retaining wall?

Beaverton properties signal retaining wall needs differently depending on their location. In the valley-floor neighborhoods, look for seasonal foundation cracks, sticky doors and windows during wet months, soil heaving along property lines, and persistent yard drainage problems. On the Cooper Mountain and Sexton Mountain slopes, watch for erosion on hillsides, leaning fences or structures, soil washing onto driveways and sidewalks, and visible ground movement on slopes after rain. Both conditions benefit from professional evaluation and, in many cases, properly engineered retaining wall construction.

Beaverton’s housing market values outdoor space, and retaining walls are one of the most effective ways to increase usable yard area on the city’s sloped properties. On Cooper Mountain and Sexton Mountain, terraced walls create level garden beds, play areas, and patio spaces that would not otherwise exist. Even in the flatter valley neighborhoods, raised retaining wall beds can elevate gardens above the heavy clay, improving both drainage and growing conditions while adding visual structure to the landscape.

How long do retaining walls last?

A properly built retaining wall in Beaverton should provide 50 to 75 years of service in the heavy clay zones and potentially longer on the better-drained elevated terrain. The expansive clay found in Beaverton’s lowlands places more stress on wall structures than almost any other soil type in the metro area, making drainage system performance the key factor in wall longevity. Prodan Construction designs all Beaverton installations with drainage capacity that accounts for the clay’s seasonal water release, using components rated for continuous ground contact and long-term durability in these demanding conditions.

What are the types of retaining wall?

For Beaverton’s varied terrain, we install these retaining wall types most frequently:

Brick/Block retaining walls: Interlocking segmental retaining wall blocks that are engineered for strength, available in multiple styles, and designed for efficient installation with built-in connection systems.
Concrete retaining walls: Poured-in-place reinforced concrete walls that provide maximum structural strength for the most demanding applications, including tall walls, heavy surcharge loads, and steep terrain.
Rock/Boulder retaining walls: Natural stone and boulder walls that provide a rugged, organic appearance while delivering substantial structural capacity, particularly effective on larger rural and semi-rural properties.

Natural stone walls can work well on Beaverton’s hillside properties where they complement the wooded landscape character, while poured concrete provides maximum strength for structural applications throughout the city. Prodan Construction evaluates each Beaverton site individually and recommends the wall system that delivers the best performance for the specific soil conditions, terrain, and functional requirements of your property.

Beaverton’s mix of Tualatin Valley clay and hillside terrain demands retaining walls built with genuine engineering expertise. Prodan Construction delivers walls designed for Beaverton’s specific conditions — properly drained, solidly founded, and built to last. Call (503) 773-6949 or contact us online for your free Beaverton retaining wall consultation.