Why the duties matter
As the owner you must ensure that your building poses no danger, to your tenants, to visitors and to passers-by on the pavement. If something happens, insurers and courts ask whether you fulfilled your duties. Documented inspections let you prove it. Legally this is the duty to maintain safety: if you breach it through fault and someone is harmed, you are liable for damages under § 823 (1) BGB.
The checklist first asks what your building has, such as a lift, a central hot water system or trees on the plot, and only shows you the duties that apply to you.
How often which duties come up
Most duties at the property recur every year, some at fixed intervals of two, three or ten years, and some depend on the season and the weather. With this rhythm you can plan the year ahead.
- Every year: check smoke alarms, have the heating serviced, inspect trees, review insurance cover.
- Every two years: main inspection of the lift, with an intermediate inspection in between.
- Every three years: have drinking water tested for legionella if it is a large system.
- As notified: the chimney sweep's fireplace inspection and measurements according to the notice.
- Every ten years: renew the energy certificate, because it is valid for ten years (§ 79 (3) GModG, formerly GEG).
- Depending on the weather: winter service, roof and gutters after storms and before winter.
Smoke alarms, legionella and heating
Smoke alarms are mandatory in all federal states and must be checked every year; the state building code decides who maintains them, you or your tenant.
You must have drinking water in large systems tested for legionella every three years (§ 31 TrinkwV). A large system means a tank of more than 400 litres or more than 3 litres in the pipes.
You have the heating serviced every year, and the chimney sweep's dates are in your fireplace notice. For the electrics in common areas, a regular inspection is recommended, for example as part of an E-Check.