An Elevator in an Office Building: When to Renovate, When to Replace, and How to Manage the Project Correctly

An elevator in an office building is the system no tenant thinks about — until it gets stuck. The moment recurring faults begin, prolonged waits for spare parts, or an elevator inspector's report with defects that require attention, the property owner finds himself facing a heavy question: is it enough to renovate and upgrade the existing system — what is called modernization — or has the time come for a full replacement? This is not a purely technical decision; it is an operational, budgetary and contractual one, and the way it is managed determines whether you get a solution for the coming decade or a patch that will fall apart in two years.

From experience managing office buildings in Israel: the moment this decision comes to a head is usually a pressured moment — an unresolved service call, an angry tenant, a contractor arriving with a proposal in hand. That is exactly why it is worth understanding the framework before you reach that point.

First of All: What Exactly Wears Out in an Elevator

An elevator is not a single unit but a combination of sub-systems, and each of them ages at a different pace. When you understand what has worn out, the question "renovate or replace" turns from vague to concrete. In most office-building elevators the components divide into five layers:

• Control and traffic command (Controller): the "brain" of the elevator. This is the first component to become technologically outdated, and the first whose spare parts disappear from the market. Manufacturers stop producing old control boards, and from there begins a hunt for used spare parts with unpredictable downtimes.
• Motor and drive system: an outdated motor with a gearbox versus a gearless motor — more economical and quieter, and a common upgrade in modernization. The difference in electricity consumption and reduced noise is noticeable after the replacement.
• Doors and entry sensors: the most common source of faults and complaints in practice. A slow door, one that tends to jam, or one that stops before fully closing — to the tenant this is first and foremost "this building is not maintained." This is the component that shapes the day-to-day user experience.
• Car, buttons and display: the part the tenant sees and feels — thresholds, lighting, button panels, floor screen. The easiest to refresh and the one that most affects the perception of value in the building.
• Shaft, rails and cables: the infrastructure components. These actually last relatively longer, which is why modernization usually leaves them in place — and that is what its economic viability rests on.

This is exactly why there is no single answer. An elevator with a sound shaft and rails but outdated controls is a classic candidate for modernization. An elevator whose structure has also failed, that was installed decades ago and that no longer meets the current safety standards — tends toward full replacement.

Modernization versus Full Replacement — the Essential Difference

Modernization means a focused replacement of the sub-systems that have worn out — usually the controls, the drive, the doors and the car — while preserving the existing structure: the shaft, part of the rails and the infrastructure. Full replacement means dismantling the entire system and installing a new elevator from scratch.

The distinction is not only in the scope of work but in the operational meaning:

• Modernization: usually shorter, less disruptive to service continuity, can be carried out in stages — and therefore more suitable for active office buildings.
• Full replacement: longer and takes the elevator out of service for a significant period — but delivers an entirely new system, with a full warranty, guaranteed spare-parts availability for years to come, and updated compliance with current standards.

The right question is not "what is cheaper today" but "what gives the lowest total cost of ownership for the coming decade, with the fewest surprises." An elevator renovated half-heartedly becomes a bottomless pit of service calls — and a reputational damage in front of tenants that no other contractor will fix.

The Seven Decision Considerations

Instead of relying on gut feeling or on the contractor's recommendation (which is usually biased toward the larger job), build the decision on seven objective axes:

1. Age of the System and Year of Installation

A typical elevator is designed for a service life of several decades until a substantial upgrade. As you approach the end of the range, the frequency of chasing spare parts increases and reliability decreases. Age in itself does not disqualify modernization — but beyond a certain threshold, modernization becomes an investment in a structure that is already close to the end of its life.

A practical question to check: is there documentation of the year of installation and the original manufacturer? Not infrequently in older office buildings this documentation has disappeared, and it is reconstructed only when a spare part is needed.

2. Spare-Parts Availability

This is usually the decisive consideration in practice. Once the control manufacturer stops producing the boards and components, every fault turns into a hunt for a used spare part — with unpredictable downtimes. A direct question to the service contractor: "What happens if we need this board again in a year?" The answer reveals a great deal. If he hesitates — that is a strong signal that modernization of the controls is no longer an option but a necessity.

3. Frequency of Faults and Shutdowns

An elevator that takes itself out of service several times a month is not just a nuisance — it is ongoing reputational damage in front of the tenants. Pull the service-call log of the past two years and look at the pattern: how many calls, on which components, how many of them recurred. A pattern of recurring faults in the same component is a focused warning light — that component is dead. Faults scattered across many components indicate a system that has reached the end of the road as a whole.

4. Compliance with Current Safety Standards

The elevator standards in Israel, including SI 2481 (the Israeli standard for electric elevators) with its various parts, have been updated over the years. Older elevators do not necessarily meet the current requirements — among other things in the areas of braking systems, emergency lighting and emergency communication from the car, and traffic command. Inspectors on behalf of the Administration of Occupational Safety and Health at the Ministry of Labor, which is responsible for supervising elevators in Israel, can require correction in any case. When an elevator inspector's report points to substantial safety defects, the question is whether to invest in a spot repair or to seize the opportunity for a comprehensive upgrade. It is important to verify the precise requirements with the inspector and with the regulations that apply to the specific building.

5. Service Continuity for Tenants During the Works

In a building with a single elevator, prolonged shutdown is almost impossible — it harms accessibility, tenants and the contractual obligations toward them (the lease usually requires reasonable accessibility). In a multi-elevator building you can work on one at a time. The continuity consideration alone may be decisive: sometimes staged modernization is chosen not because it is engineering-preferable, but because it is the only option that allows the building to keep functioning without harming tenants.

6. Actual Traffic and Demand

If the building has grown, become more densely occupied, or changed the use of spaces (for example, converted them to gyms or a service center on the ground floor that increases customer traffic), the original elevator may no longer provide the required capacity. In such a case, modernization that preserves the same drive system will not solve the waiting times — and replacement becomes an opportunity to plan correctly anew.

7. Energy and Ongoing Operating Cost

Old elevators consume more energy and require frequent maintenance. A modern gearless motor, smart controls and LED lighting can significantly reduce the ongoing expense. This is not the primary decision, but it is an additional weight on the scale — especially when the property owner examines the total cost of ownership over time and not just the initial capital expenditure.

Comparison Table — When Each Route Is Appropriate

The table is a sorting tool, not a verdict. In practice most decisions fall on a combination: a sound shaft that leans toward modernization, but exhausted spare parts that require at least a control replacement in any case. This is exactly where an independent opinion is needed that weighs all the axes together — not each one separately.

The Gap No One Tells You About: Who Represents the Property Owner

The operational truth that comes up in almost every elevator project: the party that diagnoses the problem, recommends the solution, prices it and carries it out — is usually the same party, the elevator contractor. This is a built-in conflict of interest. The contractor is not necessarily dishonest, but he has no incentive to recommend the minimal solution, and there is no one checking his recommendation from the outside.

The familiar results from the field:

• A property owner who receives a proposal for full replacement without knowing whether modernization would have been sufficient.
• A work specification written in the contractor's language and not in the client's language — hard to check what exactly was promised and delivered.
• A project at the end of which there is no one to check whether what was promised was in fact carried out — because the same party that carried out the work also "checked" it.

This is exactly where the role of an independent project manager comes in, one who represents the property owner — not the contractor. He writes the specification, compares proposals on a uniform basis, and supervises the execution.

How to Manage the Project Correctly — Eight Steps

1. Independent diagnosis: an engineering opinion that is not the executing contractor's, one that determines what really wore out and what the correct course of action is. An investment of a few consulting hours here saves tens of percent of the project's scope.
2. Defining a clear specification: a requirements document in the client's language — which components, which standard, which warranty, which timelines and what execution is required for the milestones. So that all contractors price exactly the same thing.
3. Obtaining comparable proposals: at least two or three proposals on the same specification. Without a uniform specification you cannot compare — each contractor proposes something else and you cannot tell what was left out.
4. Planning service continuity: how the building functions during the works — staging, coordinated working hours, a backup elevator if needed, and advance written notice to tenants.
5. A contract with milestones and payment terms: payment tied to progress and to standard compliance, not upfront. Defining warranty, response times for faults and spare-parts availability for years ahead — in writing in the contract.
6. Supervising the execution: presence on behalf of the property owner at the critical points — not just at the end, but along the way at key points set in advance.
7. Acceptance testing and elevator inspector approval: qualified approval before service is renewed, and an acceptance test that confirms everything in the specification was in fact delivered — not just that the elevator "goes up and down."
8. Documentation and integration into routine maintenance: all documents, warranties and approvals are kept in one place and enter the building's preventive maintenance schedule — including the date of the next periodic inspection.

The difference between a managed project and a project that manages itself is expressed mainly in two steps: the specification at the start and the acceptance test at the end. Without a clear specification you pay for what you don't need; without an acceptance test you receive less than what you paid for — and you don't know it until the next fault arrives.

A Forgotten Question: What Happens If You Don't Decide

Management in practice teaches that one of the most common choices is not to choose — to postpone the decision until the next fault. This is a strategy with a specific price:

• Rising emergency costs: an urgent service call on a Saturday, a hunt for a spare part abroad, a "bridging" part that extends life by a few more months — each of them significantly more expensive than planned work.
• Pressure to make a decision under bad conditions: when the elevator is down, the contractor can offer any price and you have no option to compare.
• Damage to tenants and contracts: an unplanned shutdown of a week or two may prompt claims for breach of the lease.

Therefore the recommendation is not to wait for a fault — but to carry out a preventive diagnosis while the elevator still works, yet is showing initial signs. Then there is time to plan, choose the right contractor and coordinate schedules.

Checklist: Ready to Decide?

• Have you pulled the service-call log of the past two years and identified a fault pattern?
• Have you verified with the service contractor which spare parts are still available and which are out of the market?
• Do you have a current, licensed elevator inspector's report with the list of defects and safety findings?
• Have you checked whether the shaft, rails and infrastructure are sound — or whether they too require attention?
• Have you planned how the building functions during the shutdown, and notified the tenants in advance?
• Have you obtained at least one opinion that is not from the contractor supposed to carry out the work?
• Have you defined a uniform specification against which all contractors price — and not "tailored" proposals that cannot be compared?
• Have you checked the total cost of ownership over a decade (operation + spare parts + maintenance) and not just the initial expense?

If you ticked off most of the items — you are in a position to make an informed decision. If not, this is exactly the stage at which it is worth stopping before committing to an expensive project on the basis of partial information.

The Bottom Line

There is no single correct route. An elevator with a sound shaft and outdated controls is usually a clear case for modernization; an old elevator whose structure has also failed, that does not meet the standards (SI 2481) and whose spare parts are out of the market — is a case for full replacement. Between the two extremes lies most of the cases, and the decision in them requires weighing age, spare parts, safety, service continuity and capacity — not gut feeling and not a single supplier's recommendation.

The most critical part is not the decision itself but who manages it and against whom. When the property owner is represented by an independent party — who diagnoses, writes a specification, compares proposals, supervises and performs acceptance testing — the project stays under control, the budget stays focused, and the result is an elevator that will serve for the coming decade instead of a patch that will return in two years.

At Domera we manage building system projects — including elevator replacement and modernization — as an independent project manager that represents the property owner against the contractor, from diagnosis to acceptance testing. To arrange an initial review of your elevator — get a proposal.