Take the whole grade change in one bite, or split it into two. That choice drives everything else about the job.
Every wall conversation starts with one number: how much elevation you're holding back. Everything after that is arithmetic and honesty. Take six feet of grade in a single wall and you have a real structure, with a wide footing, serious steel, and drainage that has to work the first time. Take the same six feet in two shorter steps and you have two simpler walls plus a planted bench between them, along with a different set of headaches.
Neither answer wins automatically. On the sloped side of town, out toward Green Mountain and through Solterra, we build both, occasionally on one property. What we won't do is pick before we know what sits above the wall, what sits below it, and where water shows up during a hard storm.
Soil pressure doesn't grow evenly with height. Double the retained height and the force trying to tip a wall over climbs far more than double, which is why a three-foot wall is a weekend and a seven-foot wall is a structure with an engineer's name on it. Footings get wider. Steel gets heavier. The consequences of a plugged drain get much less forgiving.
Terracing splits that problem into two smaller ones, and it can be the cheaper, calmer answer. But only if the walls sit far enough apart to act independently. Put the upper wall too close and its weight, plus the soil it holds, presses down on the ground right behind the lower one. Now you've built a single tall wall with a decorative gap in the middle, and the bottom half is carrying a load nobody designed it for. Real terracing needs horizontal room. If the yard can't give that up, the honest answer is one engineered wall.
| Consideration | Single tall wall | Two shorter terraces |
|---|---|---|
| Engineering | Needed, and the design gets specific to your soil | Often lighter, as long as the walls are genuinely separated |
| Footprint | Compact. The wall takes a narrow strip of yard | Wide. You give up horizontal room to gain the split |
| Excavation | Deeper and taller, with more shoring during the build | Shallower cuts, easier machine access on a slope |
| Drainage | One system that has to be right, no second chances | Two systems, and the upper must not dump on the lower |
| What you get to use | Flat ground above and below, nothing in between | A usable planted bench between the two levels |
| Failure behavior | Bigger consequences, slower warning signs | Trouble shows in the lower wall first, and earlier |
Short garden walls holding a foot of soil are edging. They can lean, and the worst outcome is a Saturday spent rebuilding them. Somewhere above that, a wall turns into a structure people stand on top of, park behind, and build near, and failure stops being cosmetic. That's the wall we want an engineer designing, with a footing sized to the soil under it and steel sized to the pressure behind it.
Lakewood adds a wrinkle worth knowing. Along the foothill edges a wall can sometimes be founded on rock, which is excellent for bearing and complicates drainage, since water traveling on top of that rock has to be caught and routed somewhere. Down in the flats near Belmar and Bear Creek it reverses: bearing takes more thought, water is easier to move, and frost depth drives the bottom of the footing. Same wall height, two different designs.
We'll walk it, take the grade, and tell you straight whether it's one wall, two, or a regrade you don't need us for. (303) 569-4046.
Late spring through fall is the working window, with a caveat. A hillside that just absorbed a month of snowmelt won't hold a clean excavation face, so early spring digs run slower and riskier than the calendar suggests. Give the ground a few dry weeks and the same cut behaves itself.
Fall is our favorite for walls. Cool weather treats curing concrete well, soil is usually at a moisture content that compacts, and there's time to place backfill and finish grade before the ground stiffens. Winter footings go in with warm mix water, accelerators, and blankets, and we won't place on frozen bearing. The step we refuse to rush in any month is the gravel and the drain behind the wall. That's what holds your wall up, and nobody goes back for it later.
Still unsure about something?
Call the crew at (303) 569-4046 and we will talk it through.
Get a free, no-obligation estimate from a crew that knows Colorado soil, Colorado weather, and how to finish concrete that lasts.
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