Choosing a lift is never just a matter of picking a model and deciding how many floors it needs to serve. The right solution depends heavily on the type of project. A lift specified for a new build is usually approached very differently from one added to an existing building.
That difference matters. It affects everything from available space and structural work to installation timescales, disruption and long-term performance. For developers, building owners, facilities teams and contractors, understanding that distinction early can make the whole process smoother.
Why project type matters
On paper, two buildings may seem to need the same outcome. Both may require improved access between floors, a reliable passenger lift, or a solution that meets accessibility requirements. In practice, though, the route to achieving that can be very different.
A new build offers far more freedom. Lift requirements can be factored into the design from the outset, so the shaft, pit, headroom, entrances and traffic flow can all be planned around the lift system. That usually allows greater flexibility in size, performance and finish.
A retrofit project is different. In an existing building, the lift often has to work around the space available rather than the other way round. Structural limitations, restricted access, older layouts and ongoing building use all shape the final specification.
Lift planning in a new build
With a new build, the biggest advantage is coordination. Architects, designers, consultants and lift specialists can work together early enough to avoid costly changes later.
This makes it easier to consider questions such as how many people are expected to use the lift throughout the day, where the lift should be positioned for the best flow through the building, what car size is appropriate for the intended use, whether the building needs one lift or more than one, and how the lift design fits with the wider interior finish.
In commercial developments, this early planning can help prevent future congestion at busy times. In residential buildings, it can help ensure the lift is practical for day-to-day use, including furniture moves, deliveries, pushchairs and wheelchair access. In public-facing buildings, it can support a better experience for visitors while helping the building meet access expectations from day one.
A new build also makes it easier to achieve a cleaner installation. Structural allowances can be properly designed in, service routes can be planned, and the lift can become part of the building rather than something added in afterwards.
What changes in a retrofit project
Retrofit projects tend to be more complex, not because the end goal is unclear, but because the options must fit around an existing structure.
In these cases, the first question is usually not which lift we want, but what the building realistically allows.
That can involve assessing available floor space, existing stairwells or circulation areas, headroom and pit limitations, structural support, power supply, access for installation, and how much disruption the building can tolerate during works.
In some buildings, the ideal lift on paper is simply not practical once these constraints are taken into account. That does not mean the project cannot move forward, but it does mean the specification needs to be guided by what is feasible as well as what is preferred.
This is particularly important in occupied buildings. Schools, apartment blocks, workplaces, healthcare settings and public buildings often require works to be carried out while the site remains in use. That affects programme planning, safety management and installation strategy.
Accessibility should be considered early
Both new build and retrofit projects need to take accessibility seriously, but the approach can differ.
In a new build, accessibility should be integrated into the building’s overall movement strategy. The lift should feel like an integral part of how people use the space, not an afterthought.
In retrofit work, the challenge is often to improve access within the practical limits of the existing property. That may mean finding the most suitable location, selecting a solution with a smaller footprint, or adapting circulation routes to ensure the installation works effectively.
The important point is that accessibility decisions should not be left until late in the process. When they are, compromise becomes more likely and costs often rise.
Performance expectations vary between buildings
Not every lift is expected to do the same job. A low-rise residential development may prioritise reliability, space efficiency and ease of use. A busy office may place greater emphasis on handling traffic quickly at key times of day. A care environment may need smoother travel and practical dimensions for equipment or assisted movement.
That is why specifying a lift should always start with building use, not just building height.
A new build often offers more choice in balancing speed, capacity and finish. A retrofit may require a more pragmatic decision, where footprint, installation method and building constraints carry more weight.
The strongest outcomes usually come from recognising that balance early, before assumptions harden into fixed plans.
Why early lift input saves time later
One of the most common issues in both new build and retrofit projects is leaving lift planning too late. By the time a specialist is brought in, other design decisions may already have narrowed options or created avoidable problems.
Early input helps identify whether the proposed location is realistic, what structural allowances are needed, what level of builder’s work may be required, how installation could affect programme and access, and whether the chosen solution will still suit the building in use five or ten years from now.
That not only reduces risk. It usually leads to a better long-term result.
The question is not simply which lift is right, but which lift is right for this type of project.
A new build offers the chance to design around the lift from the beginning. A retrofit calls for a more measured approach, where space, structure and disruption all need to be managed carefully. In both cases, the best results come from matching the lift solution to the realities of the building rather than forcing a standard answer onto every project.
When that happens, the lift does more than connect floors. It supports the building properly, works for the people using it and remains fit for purpose long after installation is complete.