Can you add an elevator to an existing home?
Yes — adding an elevator to a house you already live in is common, and with the right model it’s far more straightforward than most people expect. Compact shaftless elevators are designed specifically for retrofits: because they are self-supporting and need no separate shaft, pit or machine room, they can often be installed in a few days with minimal building work. Traditional shafted elevators can also be retrofitted, but they need space for a hoistway and more structural work, so the fit depends on your layout and how much construction you want to take on.
The reason retrofits have become so much easier is that the elevator no longer has to be planned into the house from the ground up. A generation ago, adding an elevator to an existing home meant building a full masonry or framed hoistway, a pit dug below the lowest floor, and a separate room for the machinery — a major renovation. Today, self-supporting through-floor units carry their own weight on a compact steel frame and travel through a small opening cut in the floor above, so the home only has to give up a corner of a room rather than a whole structural bay. That single change is what turns “can we even do this?” into a weekend-scale project for many households. If you want the full picture of the options before you narrow down, our guide to home elevator types compares each one side by side.
Which elevator types are best for a retrofit — shaftless vs shafted?
For most retrofits the best starting point is a shaftless (through-floor) or pneumatic vacuum elevator, because both are self-supporting and need no separate hoistway, pit or machine room. Shafted hydraulic and traction elevators can absolutely be retrofitted too, and they suit taller homes of three or four floors, but they require a built hoistway and more construction — so they make most sense when you want a larger cab, more floors, or a fully enclosed shaft as part of the finish.
Shaftless (through-floor) — the retrofit favorite
Shaftless elevators such as those from Stiltz are the most popular retrofit choice for a reason. They are self-supporting, travel through a small opening in the floor above, and need no shaft, pit or machine room at all. They suit two or three floors, tuck into the corner of a room, plug into a standard household outlet, and are usually installed in a matter of days rather than weeks. If your priority is adding an elevator with the least possible disruption to a home you’re still living in, this is normally where the conversation starts.
Pneumatic vacuum — self-supporting and compact
Pneumatic (vacuum) elevators move the cab inside a sealed tube using air pressure. Like shaftless models they are self-supporting and need no pit or machine room, so they retrofit cleanly. They tend to be compact — typically two or three passengers — with a distinctive cylindrical, panoramic cab, so they suit homeowners who want the elevator to be a design feature as much as a practical addition.
Hydraulic and traction (shafted) — for taller homes
Traditional residential elevators use either a hydraulic ram or a cable-and-counterweight traction system, and brands like Savaria offer them in a wide range of cab sizes and finishes. Savaria’s systems need a shaft (hoistway) and usually a small pit, which means more structural work in an existing home. In return they give a smooth, quiet ride and comfortably serve three or four floors, so they’re the right answer when a compact shaftless cab simply isn’t big enough or the home is tall.
Vertical platform lifts — single-rise access
If the real need is getting a wheelchair or scooter over a single change of level — a porch, a split-level landing, a raised entry — a vertical platform lift is often the simplest retrofit of all. Brands like Harmar make indoor and outdoor vertical platform lifts (and own the shaftless Pollock line), and these install with very little building work because they only serve one rise rather than travelling through the house. For a fuller comparison of how the leading brands line up, see the home elevator buyer’s guide.
Do you need a shaft or a pit?
Not always — and for a retrofit, avoiding both is usually the goal. Shaftless and pneumatic vacuum elevators are self-supporting and need no separate hoistway, pit or machine room, which is exactly why they’re the easiest and least disruptive to add to an existing home. Traditional hydraulic and traction elevators do require a shaft, and usually a small pit at the base plus space for equipment, so they involve meaningfully more construction.
In practice this is the single decision that shapes how big a project your retrofit becomes. Cutting a pit into an existing slab or lowest floor is one of the more involved parts of any elevator installation, because it can mean excavation, waterproofing and reinforcing the surrounding structure. A self-supporting unit sidesteps all of that: it stands on the existing floor and carries its own load through its frame. So if keeping structural work — and cost — to a minimum is a priority, a shaftless or pneumatic model is almost always the place to start.
How much structural work is involved?
For a compact shaftless retrofit the structural work is modest and localized. The main job is cutting and framing a small opening in the floor above so the cab can pass between levels; because the unit is self-supporting it doesn’t rely on the surrounding walls to carry it. A structural engineer or the installer confirms how the floor joists should be trimmed and headed off around the opening — the same principle as framing for a new stairwell or a skylight — and then the finishing work makes good the ceiling and floor around the cab.
A shafted hydraulic or traction elevator is a different scale of project. It needs a full hoistway built through every floor it serves, usually a pit at the base, and space for equipment, so you’re looking at framing or masonry work, more finishing, and more coordination with other trades. Neither approach is something to guess at from a floor plan: the home survey is where an installer actually checks your floor structure, spans and headroom and confirms what’s possible before you commit a dollar.
How long does a retrofit take?
A compact shaftless retrofit can often be installed in just a few days, with the home usable throughout most of the process. A traditional shafted elevator that needs a hoistway and structural work takes longer — often a couple of weeks or more — and may be scheduled around other construction. Your installer confirms the exact timeline after the home survey, once the model and the amount of building work are settled.
The reason shaftless retrofits are so fast is that most of the disruptive work — the structural opening and any making-good — is small and confined to one spot in the house. There’s no pit to excavate, no hoistway to build floor by floor, and no separate machine room to fit out. That’s also why a shaftless install rarely means moving out: the noisiest, dustiest phase is short, and you keep the run of the house while the elevator goes in.
Where can the elevator go — placement on each floor?
The single rule that governs placement is alignment: an elevator has to occupy a spot that lines up vertically on every floor it serves, so the cab lands somewhere usable on each level rather than in the middle of a doorway or over a supporting wall. Once you start looking at a home with that in mind, a surprising number of options usually appear.
- Corner of a room: a shaftless unit tucks into the corner of a living room, den or bedroom and travels up to the room directly above.
- Stacked closets: a closet sitting above another closet is often the cleanest retrofit, hiding the elevator almost entirely.
- Alongside a staircase: the footprint beside or within a stair run frequently lines up neatly on both floors.
- Hallway or landing: a wide hall that repeats on each floor can host a cab without stealing room from living space.
The two things the installer is really checking are whether the chosen spot lines up cleanly through the floor structure and whether the landing on each floor lands you somewhere you actually want to arrive. That’s a judgment best made on site rather than on paper, which is why the free home survey is such a useful step even before you’ve settled on a model.
What does a retrofit cost?
Most U.S. homeowners spend between $35,000 and $85,000 installed. A compact shaftless retrofit typically runs $25,000 to $45,000, while shafted hydraulic or traction elevators run higher because of the extra hoistway and pit construction. The type of elevator is the biggest cost driver, followed by the number of floors, whether it’s a retrofit or a new build, and the cab size and finish. The only way to know your number is a free quote based on your actual home.
Illustrative guide ranges only. For a full breakdown of what drives price and what’s included, read the home elevator cost guide.
For a retrofit specifically, the thing to remember is that the model you choose largely decides how much of that range you land in. A self-supporting shaftless unit avoids the pit, hoistway and machine-room construction that push a shafted elevator toward the top of the scale, so it tends to be both the cheaper and the faster way to add an elevator to an existing home. The extra building work — not the elevator itself — is usually what separates a $40,000 project from an $80,000 one.
What to expect from the home survey & install
Every retrofit starts with a free home survey, where a licensed installer measures the space, checks the floor structure and headroom, and confirms which models will fit and the exact price. Once you choose, the installer handles the permits and schedules the work, completes the install, and the elevator is inspected and certified to local code before you use it — then you get trained on safe operation. Your quote should spell out exactly what’s included: the unit, installation, permits, inspection, warranty and user training.
The survey is genuinely the most valuable hour of the whole process, because it replaces guesswork with certainty. Instead of wondering whether your floors will take an opening or where the cab can land, you get a firm answer on the model, the placement, the amount of building work and the price — all before you’ve committed to anything. For a shaftless retrofit the install that follows is short and contained; for a shafted system the installer will walk you through how the hoistway and pit work fits around the rest of your home. Either way, going in with a clear brief — how many floors, whether you want to avoid structural work, and any accessibility needs — makes the survey faster and the quotes easier to compare.