Inground lift installation is a different animal than bolting a surface lift to a slab, and if you’re weighing the option for your shop, you need someone who has actually dug the hole, poured the concrete, and set the cylinder before you commit. We’re Auto Lift Services, based in Ames, Iowa, and we install, service, and supply parts for lifts across the state — including the inground systems that a lot of installers won’t touch. This guide walks through what actually happens on an inground lift installation job, from the first site visit to the final inspection, so you know what you’re signing up for.
See the inground lift models we install and support across Iowa, plus cylinders and parts for existing systems already in the ground.
Why Shops Still Choose Inground Over Surface Lifts
Floor space is the number one reason we still get calls for inground lift installation instead of a two-post or four-post surface unit. When the cylinder and arms disappear into the ground, the bay stays completely open for detailing, alignment work, or just parking a second vehicle nearby without dodging columns. For dealerships, high-volume tire shops, and detail centers where every square foot of the shop floor matters, that clearance is worth the extra work up front.
There’s also a customer-perception angle we hear from body shops and dealer service departments — an open bay with an inground lift just looks cleaner and more professional to walk-in customers. It doesn’t hurt functionality either: no overhead columns means no obstruction for oversized trucks, vans, or RVs that would otherwise clip a post-style lift’s arms or superstructure. For shops doing heavy volume where cycle time matters, the open floor also speeds up how fast a tech can position a vehicle without lining up columns first.
What the Site Survey Actually Covers
Before we schedule any inground lift installation, we walk the site in person. We’re checking slab thickness, existing rebar or utility lines, water table depth, soil composition, and how close the pit will sit to a wall, drain, or existing equipment. Iowa’s freeze-thaw cycles and clay-heavy soil in a lot of counties make this step non-negotiable — skipping it is how shops end up with a cylinder casing that heaves or a pit that floods every spring.
We also confirm ceiling height isn’t a factor (it rarely is with inground, which is part of the appeal), check for adequate drainage routing, and verify the concrete pad has enough integrity to support the excavation without undermining the surrounding floor. If the existing slab is too thin or already cracked, we’ll tell you honestly before you spend a dime on equipment — better to know that during the site survey than mid-installation.
The Excavation and Concrete Phase
This is the part that makes inground lift installation take longer and cost more than a surface unit, and there’s no way around it. Once the site is approved, we cut the slab, excavate to the required depth for the cylinder casing, and set the casing plumb and level — even a small amount of lean here causes binding and premature wear on the cylinder for years afterward. Backfill has to be compacted properly, not just dumped and packed loosely, or you’ll get settling later.
After the casing is set, we pour new concrete around it and let it cure fully before setting the platform and hydraulic components. Rushing the cure time is one of the most common mistakes we see from installers trying to save a day or two on the schedule — it almost always shows up later as cracking or shifting. We’d rather build in the extra curing days than have a customer call us back in six months about a lift that’s no longer sitting level.
Drainage and Groundwater Protection
Groundwater is the single biggest long-term threat to any inground lift installation in Iowa, and it’s the reason a lot of older inground systems fail early. We install proper drainage around the cylinder casing and, depending on the site, a sump or check valve setup to keep water from collecting around the cylinder over time. Corrosion from standing water is slow, but it’s relentless, and it’s almost always cheaper to solve at installation than after the fact.
We also seal the casing connections carefully and use cylinder coatings rated for burial applications rather than assuming a standard cylinder will hold up underground indefinitely. If your shop sits on a lot with a naturally high water table — which describes a fair number of sites we’ve surveyed around central Iowa — we’ll talk through whether a surface or above-ground lift might actually serve you better before you commit to digging.
Permits, Inspections, and Code Compliance
Most municipalities require permits for the excavation and structural work involved in an inground lift installation, and skipping that step can come back to bite you during insurance claims or a future building inspection. We handle the permitting conversation with local officials as part of the job, and we build the required inspections into the project timeline rather than treating them as an afterthought.
This also matters for ALI (Automotive Lift Institute) certification. An inground lift that wasn’t installed to spec, or that skipped required inspections, can lose its certified status — which matters for your insurance and for resale value down the road. We document the installation thoroughly so you have records if you ever need them for an inspector, an insurance adjuster, or a future buyer of the shop.
Timeline: What to Actually Expect
A straightforward inground lift installation on a site with good soil and no drainage complications typically runs longer than a surface lift job because of concrete cure time alone — plan for it to span more than a few days once you include excavation, casing set, cure, and final assembly. Sites with poor drainage, thick slabs to cut through, or utility conflicts add time on top of that. If you’ve read our full breakdown of the installation process, you know each phase has its own required wait time that can’t be compressed safely.
We build realistic timelines into every quote so you’re not caught off guard mid-project, and we’d rather under-promise on the schedule than have your bay sitting half-finished longer than expected. If budget is the bigger question on your mind right now, our guide on inground lift installation cost breaks down what drives the price up or down, and our baseplate versus inground comparison is worth a read if you haven’t fully committed to going underground yet.
Choosing the Right Installer for the Job
Not every lift company will take on an inground lift installation, and that’s not an accident — it requires concrete work, drainage knowledge, and cylinder expertise that a lot of surface-lift-only installers simply don’t carry. We’ve done this work across Iowa long enough to know the soil quirks by county and the drainage issues that show up repeatedly in certain areas, and we bring that history into every site survey.
Before you sign with anyone for an inground lift installation, ask about their excavation experience specifically, how they handle groundwater protection, and whether they pull permits as a standard part of the job or leave that on you. Those answers tell you more about whether a company is equipped for inground work than any brochure will. We’re happy to walk your site and give you a straight answer either way — even if that answer is that inground isn’t the right fit for your building.
Our Clients Include: