We are Your Portland Retaining Wall Construction Company

When you live in a city built atop an ancient volcanic field, you learn quickly that the ground has a mind of its own. Portland’s terrain — shaped by Boring Lava basalt, Missoula Flood silt, and the steep grades of the West Hills — creates constant pressure on slopes and foundations throughout the metro area. Prodan Construction has been building and repairing retaining walls across Portland for years, and we understand the specific geological challenges that every neighborhood presents. From the volcanic buttes of East Portland to the rain-soaked hillsides of Southwest, our crews design and install retaining wall systems that hold firm against the forces that make this city’s landscape so dynamic. Call us today at (503) 773-6949 for a free retaining wall estimate anywhere in Portland.

A Good Retaining Wall Needs a Solid Construction at All Levels

It surprises people when they realize that a retaining wall is not simply a stack of blocks arranged against a hillside. In Portland, where volcanic basalt can appear just inches below the surface near Mt. Tabor or Rocky Butte, building a retaining wall that will last requires a deep understanding of what lies underneath. Every retaining wall we construct in Portland begins with a thorough assessment of the soil conditions, drainage patterns, and the specific loads the wall must bear. The Missoula Flood deposits that blanket much of the city’s river-adjacent neighborhoods behave very differently under pressure than the dense basalt found on the east side buttes.

The foundation of any quality retaining wall starts with a properly compacted gravel base — typically six to eight inches deep — that provides drainage and a stable footing for the first course of block or stone. In Portland, where annual rainfall exceeds 40 inches and clay soils hold moisture like a sponge, this drainage layer is absolutely critical. We set the first course partially below grade to anchor the wall against lateral earth pressure, then build upward with careful attention to batter, setback, and geogrid reinforcement on taller walls. Portland’s freeze-thaw cycles during winter months can crack poorly constructed walls within just a few seasons, which is why we engineer every installation to handle the full range of local weather conditions.

Our Portland retaining wall projects range from small garden terraces in Sellwood-Moreland to large-scale structural walls supporting driveways and building pads in the West Hills. Whatever the scope, our commitment to proper engineering and quality materials stays the same. Prodan Construction treats every retaining wall as a structural element that must perform for decades, not a decorative afterthought.

Prodan Construction is Your Portland Retaining Wall Repair Company

A failing retaining wall is more than an eyesore — it is a genuine safety hazard that can undermine foundations, block drainage, and send tons of saturated earth sliding across your property. In Portland, where heavy winter rains saturate the clay soils that overlay volcanic bedrock, retaining wall failures are disturbingly common. Prodan Construction specializes in diagnosing why walls fail and engineering permanent repairs. Whether the problem is a blown-out base in a Hawthorne District yard, a leaning block wall along Powell Butte, or a crumbling concrete wall beneath a Southwest Portland driveway, we have the equipment and expertise to stabilize, rebuild, or replace the structure so it performs correctly for the long term. Do not wait until a small crack becomes a catastrophic collapse — call Prodan Construction at (503) 773-6949 for a retaining wall inspection today.

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

Our services are rated 5 stars by customers throughout Portland and the greater metro area. We take pride in delivering retaining wall construction and repair work that exceeds expectations. Here is what some of our recent clients have shared about working with Prodan Construction:

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 Portland Retaining Wall Construction Company FAQ

How do you build a retaining wall?

Building a retaining wall in Portland requires careful planning due to the city’s varied geology. Here is the general process our crews follow for most residential and commercial retaining wall projects:

• 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?

In Portland, any retaining wall over four feet in height typically requires a building permit from the Bureau of Development Services, and walls above that threshold often need engineering review. We strongly recommend consulting a structural engineer for walls that will bear significant loads — such as those supporting driveways, structures, or slopes steeper than 2:1. Portland’s environmental overlay zones near streams and steep slopes add another layer of complexity. Prodan Construction works with licensed engineers regularly to ensure every wall we build meets both code requirements and the practical demands of Portland’s challenging terrain.

How do you know when you need a retaining wall?

Several signs indicate you may need a retaining wall on your Portland property. If you notice soil creeping downhill after heavy rains, cracks forming in your foundation, pooling water against your home, or a leaning fence line along a slope, these are all signals that the earth is moving and needs structural support. Portland’s combination of heavy rainfall, clay-over-basalt soil layers, and steep grades in neighborhoods like Mt. Tabor, the West Hills, and inner Southeast makes slope instability a common concern.

Beyond structural necessity, a well-designed retaining wall can transform an unusable hillside into tiered garden beds, flat play areas, or expanded patio space. Many Portland homeowners discover that a retaining wall project actually increases their usable yard area significantly, adding both function and property value to their homes.

How long do retaining walls last?

A properly constructed retaining wall in Portland should last between 50 and 100 years depending on the materials used and the quality of construction. Concrete block walls with proper drainage and reinforcement tend to be the longest-lasting option in our wet climate. Natural stone walls can last even longer if built with adequate foundations. The key factors that shorten a wall’s lifespan in Portland are poor drainage behind the wall, inadequate foundations, and the use of materials that cannot withstand the constant moisture exposure that comes with our Pacific Northwest climate.

What are the types of retaining wall?

The three most common types of retaining walls we build in Portland are:

• 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.

There are other options as well, including gabion walls, timber walls, and sheet pile systems. Each has specific applications depending on the site conditions, budget, and aesthetic goals. During your free consultation, Prodan Construction will assess your property and recommend the retaining wall type that best fits your Portland project.

Prodan Construction has the experience, equipment, and local knowledge to build retaining walls that stand up to Portland’s demanding terrain and climate. From the volcanic buttes of East Portland to the steep hillsides of the West Hills, we deliver retaining wall solutions that last. Call us at (503) 773-6949 or contact us online to schedule your free estimate today.

Prodan Construction is Your Portland Retaining Wall Construction Company