The verdict in three sentences
An independent lift company in Berlin with 1 900 lifts under contract must be able to prove, lift by lift, that maintenance visits and callout times are met, or it pays penalties and loses contracts at renewal. A lift maintenance contract and callout management app costs roughly EUR 60 000 to 100 000 in 2026 and is delivered in about 4 months. It schedules visits at the agreed interval, often every 6 weeks, runs the on-call rota, produces reports for property managers and keeps a digital maintenance log that holds up in an inspection.
What regulation and contracts require
In Germany, lifts fall under the Betriebssicherheitsverordnung (BetrSichV). Operators must have their lifts inspected by an approved inspection body such as TÜV or DEKRA, with a main inspection every 2 years and an intermediate inspection in between. They must also ensure that trapped passengers are freed quickly, and the technical rule TRBS 3121 is commonly read as a 30-minute rescue target, which most contracts write in.
Contracts with Hausverwaltungen and housing companies go further: maintenance at a set interval, callouts within 4 to 24 hours depending on the service level, minimum availability, with penalties attached. At 1 900 lifts, the challenge is not doing the work well, it is proving it without days of spreadsheet work.
| Obligation | Frequency or deadline | Evidence expected | Risk if missing |
|---|---|---|---|
| Maintenance visit | Often every 6 weeks | Date, technician, checks done | Penalty, breach of contract |
| Passenger rescue | 30-minute target | Call time, arrival time | Heavy penalty, liability |
| Callout repair | 4 to 24 h by contract | Time-stamped steps | Penalty per hour late |
| Maintenance log | Updated each visit | Consultable history | Findings at inspection |
| Annual report | Once a year per lift | Document sent to the manager | Contract disputed at renewal |
| Inspection follow-up | Every 2 years plus interim | Defects closed and logged | Lift taken out of service |
App modules and cost
The app connects three groups: the office (contracts, scheduling, invoicing), field technicians (routes, reports, photos) and clients (property managers, housing companies, building owners).
| Module | Content | Budget (EUR, 2026 estimate) |
|---|---|---|
| Contract and asset register | 1 900 lifts, service levels, penalties | 7 000 to 12 000 |
| Visit scheduling | Automatic generation per interval, routes by district | 12 000 to 20 000 |
| Offline technician app | Checklists, photos, signature, parts used | 15 000 to 24 000 |
| On-call and callout handling | Call intake, dispatch, time stamps, SMS | 11 000 to 18 000 |
| Digital log and reports | History per lift, annual PDF report | 8 000 to 13 000 |
| Client portal and dashboard | Manager access, response-time indicators | 7 000 to 13 000 |
| Total | Full project in 4 months | 60 000 to 100 000 |
Plan 12 to 18 % of build cost per year for hosting and maintenance. Off-the-shelf field service software often costs EUR 40 to 90 per user per month, but rarely handles lift-specific rules and property manager contracts out of the box, which is the main reason for custom work in this trade. For how we scope these projects, see our custom web applications.
On-call and callouts: the core of the problem
At night and at weekends, a callout comes from the cabin emergency phone, the caretaker or a resident. The app must create the job in under a minute, identify the lift and its service level, show the nearest on-call technician and start the clock. Every step (call received, technician en route, on site, passengers freed, lift back in service) is time-stamped from the technician's phone.
That log serves three purposes: answering a manager who disputes a response time, calculating actual penalties instead of flat ones, and spotting lifts that fail too often and justify a modernization quote. A lift with more than 6 breakdowns a year becomes a quantified sales argument.
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Jonas, managing director of an independent lift company in Berlin, carries out around 16 500 visits a year on 1 900 lifts. Without automatic scheduling, 4 % of visits run past the agreed interval, about 660 visits. At an average penalty of EUR 180 per late visit, exposure reaches EUR 118 800 a year.
Two office staff also spend 30 % of their time compiling reports and logs, roughly EUR 33 000 of loaded cost a year. With an app at EUR 80 000 and EUR 12 000 of annual maintenance, Jonas targets 1 % late visits and half the admin time. The annual gain is around EUR 89 100 of avoided penalties plus EUR 16 500 of time, EUR 105 600 in total, and the project pays back in about 11 months.
FAQ
Can we migrate existing contracts and history?
Yes. Importing 1 900 lifts, their contracts and the last 2 to 3 years of visits from existing files takes 2 to 3 weeks of work.
Can technicians work without signal in machine rooms?
Yes, the technician app works offline and syncs when the network returns. That is essential because many machine rooms and pits have no coverage.
Will the digital log satisfy inspectors?
It will if it is complete, time-stamped and available to the operator. A PDF export per lift can be produced at any time, including for the two-yearly TÜV or DEKRA inspection.
How long until we are live?
About 4 months: 3 weeks of scoping, 10 weeks of development and a 3-week pilot on a district of 200 to 300 lifts before full rollout.
Do property managers get access?
Yes, through a read-only portal with upcoming visits, breakdown history and response times. It cuts follow-up calls sharply and helps at renewal.
Let's scope your project. We start from your lift portfolio, contract templates and on-call setup to scope the app and a 4-month plan. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
