What an Elevator Outage Costs: A Worksheet

Why is there no calculator on this page?

Because an honest calculator needs sourced inputs, and the industry figures typically used for this — average outage duration, average tenant impact, average lost revenue per hour — are not values we can substantiate. Publishing a computed number built on unsourced averages would produce a confident-looking figure with nothing behind it.

The worksheet below asks you for the inputs instead. Every one of them is something a property manager, an operator, or an accounting team can produce from records that already exist, which is also what makes the result defensible when someone challenges it.

What inputs does a downtime cost estimate need?

Five categories: building profile, the outage scenario, direct costs, operational costs, and revenue or rent effects. Gather them in that order, because the profile determines which of the later categories even apply to your building.

How do you assemble the per-day figure?

Work one scenario at a time and total the categories for that scenario. The useful output is not one number but two or three: a routine one-car outage, an extended outage waiting on parts, and — for buildings with a single unit — a total loss of elevator service.

1. Define the scenario precisely: which unit, how many days, what remains in service.
2. Total the direct costs you would actually incur — emergency labor, expedited freight, temporary help.
3. Add operational costs by asking each affected department for hours diverted and work rescheduled.
4. Add revenue or rent effects that are contractually or observably tied to the outage.
5. Divide by the number of days to get a per-day figure for that scenario.
6. Repeat for the extended-outage scenario, which is where parts lead times dominate.
7. Compare the extended-outage figure against the modernization cost and its financing period.

Keep the assumptions visible next to the result. A number whose inputs are stated survives scrutiny; a number without them gets discounted to zero the first time it is questioned.

Which buildings carry the highest downtime exposure?

Single-car buildings and buildings whose population cannot use stairs carry the most exposure, because there is no substitute and no redundancy. After that, exposure tracks how tightly the building's operations depend on vertical movement.

Single-car building

No redundancyAn outage is a total loss of elevator service for the building.

Populations who cannot use stairs

Highest impactSenior living, medical, and multifamily with mobility-limited residents.

Operations dependent on movement

High impactHospitals, hotels, and warehouses moving goods or patients between floors.

Multi-car bank with redundancy

Lower per-outage impactService degrades rather than stops; wait times and traffic handling suffer.

Note that redundancy lowers the cost of a single outage but does not remove it. A four-car bank running on three cars during a morning peak is a service problem tenants notice and remember.

How do you use the number in a capital case?

Put it against the specific risk that modernization removes, not against modernization in general. The strongest version of the case is: this control generation sources parts from refurbished stock, an extended outage costs this much per day at this building, and here is what removes that exposure.

Pair the figure with the equipment evidence — repeat callbacks by subsystem, parts lead times, and recurring inspection items. Together they make an argument that a bare price comparison cannot.

Prime Elevator Corp will supply the equipment side of that case for buildings in the Houston metro: callback history by subsystem, the parts-support outlook for your control generation, and itemized scope under TDLR Elevator Contractor License #20478. The building-side inputs stay yours, because they are the only ones anyone should believe.

Source: Tex. Health & Safety Code §754.019 — Duties of Owners