Retrofitting an external lift on your home: Which solutions are right for your building?

Retrofitting an external lift: A space-saving solution for existing buildings

Anyone looking to “retrofit an elevator on the outside of the house” is usually faced with the following challenge: there is hardly any space for a shaft inside, the stairs cannot be easily converted – and at the same time, the house should become barrier-free and increase in value over the long term.

Current guides show that an externally mounted lift is often the most space-saving and structurally simplest solution for existing buildings, both for single-family homes and multi-unit buildings. Two approaches are often distinguished: classic passenger lifts with a shaft, and more compact solutions such as hub lifts and vertical platform lifts.

Table of contents

• What exactly does “retrofit an external lift on your home” mean?
• External lift, home lift or platform lift – the key options
• External lift with Lehner: Vertical platform lifts as an alternative
• Why an external lift is especially worthwhile for existing buildings
• Cost factors: What the price really depends on
• Permit, structural integrity & neighbourhood: What matters in planning
• Conclusion: The right external lift in just a few steps
• FAQ – Frequently asked questions about external lifts for homes

External lift, home lift or platform lift – the key options

The top results on the topic essentially distinguish three solution paths:

1. Classic passenger lift with shaft

   • Enclosed cabin, multiple stops

   • Usually higher weight and a larger cabin footprint

   • Independent shaft made of steel or masonry

   • Particularly interesting for multi-unit buildings or commercial use

2. Home lift / lift without a classic machine room

   • Compact lift, often to the Machinery Directive

   • Can be installed indoors or outdoors

   • In many cases, a lighter shaft construction is sufficient

   • Goal: comfort and accessibility in a private setting

3. Vertical platform lifts / vertical lifts

   • Open platform, optionally with partial cladding or a shaft

   • Lifting heights from a few steps up to several metres

   • Specifically for wheelchair users and people walking with mobility aids

   • Described in technical articles as a cost-effective alternative to lifts for low lifting heights

Lehner Lifttechnik covers precisely this third category with its vertical platform lifts—with solutions such as Sigma, Liftboy 1–5, Elevex, or StepSaver, which are designed for indoor and outdoor use and are particularly well suited for retrofitting.

External lift with Lehner: Vertical platform lifts as an alternative

Instead of a “classic” passenger lift, Lehner Lifttechnik deliberately relies on vertical platform lifts, which offer many advantages when retrofitting:

Why an external lift is especially worthwhile for existing buildings

Many guides reach the same conclusion: in existing buildings, an external lift is often easier and more economical to implement than a lift inside.

Typical advantages:

• No intervention in the stairwell
  The existing staircase remains in place; interventions in the structure and floor plan are minimised.

• More space indoors
  The shaft or platform structure is located outside; inside, only access points, doors or short corridor sections are required.

• Accessibility across multiple levels
  External lifts can be planned to serve multiple floors and stopping points – from the entrance to the attic.

• Increase in property value
  Properties with lifts are in higher demand, especially with an eye to age-appropriate living.

For single-family homes, this means: instead of moving walls indoors or altering stairs, a compact external lift or a vertical platform lift such as Sigma can be installed on the facade – with direct access into the house.

Cost factors: What the price really depends on

Independent guides often cite ranges of around €30,000 to €50,000 for a classically planned external lift on single-family homes, depending on the design, number of stops and features. Significantly higher amounts are mentioned for larger multi-unit buildings.

More important than a flat figure, however, are the influencing factors that also play a central role when planning with Lehner:

• Lifting height and number of stops
  A lift that only bridges half a storey or a few steps is technically simpler than a solution spanning three or four floors.

• System type
  A classic passenger lift with an enclosed cabin and a large shaft differs significantly from a vertical platform lift with an open platform.

• Shaft / structure
  Is a steel shaft required? Is a self-supporting lift structure sufficient? Can it be connected to existing balconies or landings?

• Design and finish
  Enclosed glass facades, special RAL colours, door variants and additional equipment (automatic doors, emergency call, lighting, app control, etc.) influence the total price.

Lehner Lifttechnik deliberately does not work with fixed prices, but with customised solutions: the vertical platform lifts are tailored to the specific situation – from platform size and lifting height to surface colour. Only on the basis of this data do Lehner or the partner companies prepare a specific quotation.

Permit, structural integrity & neighbourhood: What matters in planning

Leading guides on external lifts emphasise three points that are equally important in Austria and Germany:

1. Building permit

   • As a rule, an externally added lift requires a building-law approval.

   • Specialist companies support you with submission plans and coordination with the authorities.

2. Structural integrity and foundation

   • The lift or platform lift must be safely founded and connected to the building.

   • Depending on the system type (e.g. Sigma with drive tower), a comparatively compact foundation may be sufficient.

3. Clearances & neighbourhood

   • Setback areas to the property boundary and to the neighbouring building must be observed.

   • Transparent glass or aluminium structures help to integrate the lift visually into the facade and build acceptance.

Lehner partners take these points into account during planning: based on photos, plans and an on-site appointment, they check where the lift can be positioned most sensibly on the outside of the house – and how to implement access points indoors as space-efficiently as possible.

Conclusion: The right external lift in just a few steps

Retrofitting an external lift on your home is now far more than a technical luxury. It creates accessibility, increases living comfort and boosts the value of the property – especially with regard to age-appropriate living and multi-generational families.

Independent specialist literature shows:

• External lifts preserve indoor space,

• avoid major interventions in the stairwell

• and are often the most practical solution for existing buildings.

With its vertical platform lifts, Lehner Lifttechnik offers an alternative to classic shaft lifts: Sigma, Liftboy, and Elevex are specifically designed to be retrofitted on the outside of the building—from a single entrance to multiple floors.

The decisive step is always individual planning: photos, plans and a discussion with a Lehner partner clarify which system suits the architecture, the intended use and the budget. This turns a general Google search for “retrofit an external lift on your home” into a tailor-made, safe and aesthetically pleasing lift solution for your house.

FAQ – Frequently asked questions about external lifts for homes