Sunken patios in Arvada follow the water
Lift enough patios in one city and you learn its habits. In Arvada, the habit is water on the move. The clay here is cut by the Ralston Creek and Van Bibber drainages, and roof water from older downspout setups has been soaking the ground beside patio slabs for decades. The soil washes away a little at a time, the patio settles toward the wet side, and one spring you notice the slab pitches toward the back door or holds a puddle where the grill used to sit flat.
We've been fixing exactly that from our shop on Russell Court since 1988. Arvada is home base for AAA, and patio calls in this city rarely surprise us. The corner that sank is almost always the corner the roof drains to.
Why the ranch-house backyards keep us busy
The 1950s through 70s ranch neighborhoods hold most of Arvada's original patios, poured when the houses went up and now 50-plus years into the clay's swell-shrink cycle. The concrete is usually still sound. The base under it is not. Out west, the 1990s and 2000s builds bring us a different version of the same call: stamped and colored patios settling on backfill that never finished compacting.
Both versions lift the same way. We bore 1.5" holes through the slab, pump a Portland cement, sand, and topsoil slurry into the empty space below, and raise the patio until it sits back at its original height. On stamped work we tuck holes into the pattern's grout lines where the lift allows and patch with color-matched concrete, so the finish you paid for stays the point of the patio.
What the spring snow does to a slab on clay
Arvada's roughest patio season isn't the deep freeze. It's the melt. The upslope storms that pile heavy, wet snow against the foothill edge in March and April melt off fast, and the water sinks in along the slab edges, exactly where the base is most exposed. Saturated clay swells; then the wind and sun dry it back out, and the shrink opens gaps under the concrete. A patio that felt solid in February can tap hollow by May. Freeze-thaw works on it all winter too, but the fast melt is what dumps a season's worth of water into the soil at once.
The number, and what changes it
Most Arvada patios run $400 to $1,200 to lift, roughly a quarter of what demolition and a new pour would cost. Within that range, two things set the price:
- Drop distance. A corner down half an inch takes far less material than a slab that's settled three or four inches.
- Void size. The slurry fills empty space before anything rises. More washout means more material.
The replace-instead answer comes when a patio has broken into five or more pieces. Small pieces won't rise evenly, and we'd rather tell you that in your backyard for free than charge for a repair that can't hold. Two or three large pieces are no problem; we bring them all to one plane.
One fix we insist on before we pump
The lift lasts as long as the drainage does. Since aging downspout setups cause most of the washout in this city, Trevor looks yours over during the free estimate and will point out exactly where an extension needs to go before we schedule the work. It costs almost nothing, and it's the difference between a patio that stays put for decades and one that starts creeping down again in a few years. Our 5-year written warranty backs every lift, but the goal is that you never have to use it.
Book the estimate before grilling season
A patio lift takes us two to four hours, you're walking on it the same day, and the furniture goes back that evening. Trevor comes out in person, measures the settlement, checks the drainage, and leaves a written price with zero follow-up pressure. You don't need to be there for the lift itself, either. Plenty of Arvada customers leave us a gate code and come home to a level patio; we send photos of the finished slab along with the invoice. See finished lifts on our work page, then call (303) 526-2222 or request your free estimate. The truck barely has to leave the shop.