Seat Walls & Retaining Walls Overview
Seat walls and retaining walls are the work our crew is known for. They're the projects that change a property permanently — a curved stone seat wall wrapping a patio, a fire pit surround built for family nights, or a boulder retaining wall holding back an elevated yard. Kerwin Property Maintenance designs and builds these in-house, start to finish, with the base work and drainage detail that make the difference between a wall that lasts decades and one that leans in three winters. No project is too big or too small — but this is the one we love most.
Built From the Base Up
A wall is only as good as what's under it. We over-excavate, compact base rock in lifts, set a level first course by laser, and build in drainage stone and fabric behind the wall so hydrostatic pressure never gets a chance to push it out. That's the invisible work that keeps our walls dead-straight through South Dakota freeze-thaw.
Seat Walls That Become the Focal Point
A seat wall does two jobs — it holds the grade and it gives you somewhere to sit. We design the curve around how you actually use the space: wrapping a stock tank, framing a fire pit, or defining the edge of a patio. Cap stones are cut tight, joints are consistent, and the finished wall looks like it was always part of the property.
Retaining Walls That Solve Real Problems
Sloped yard washing out? Elevated bed spilling into the lawn? Grade fighting your foundation? We build boulder and block retaining walls that hold the hill, redirect water away from the house, and turn unusable slope into flat, planted, functional space.
One Crew, One Standard
The same Kerwin crew excavates, builds, backfills, and finishes the surrounding beds — no subs, no hand-offs, no finger-pointing. The owner walks the finished wall with you, and our drone footage of the completed build is yours to keep.
Why property owners choose us for seat walls & retaining walls
- Custom curved seat walls and fire pit surrounds
- Engineered block and natural boulder retaining walls
- Compacted base built in lifts with proper drainage stone
- Stamped and colored concrete edging to finish the build
- Grade correction on sloped and terraced yards
- Commercial-grade retaining walls for lots, entrances, and campuses
Ready to get started?
Seat walls and retaining walls are our favorite projects — send us your space and we'll design something worth showing off.
