Usage as law
The servitude of the turn of the ladder, although recognized by usage, is not explicitly mentioned in the Civil Code. It is a custom. This does not prevent it from being strictly regulated to avoid abuse. The servitude of a ladder tower must meet two cumulative conditions: the work must be essential for the conservation of the property, and impossible to carry out without access to the neighboring property.
A right but also duties
Clearly inform your neighbor of the nature and duration of the work. It's vital that you take care not to damage your neighbor's property, and that you repair any damage caused by the work as quickly as possible. Clearly explain the project, the work involved and why access to your neighbor's property is essential. Good communication and detailed explanations often avoid conflicts.
Compensation
It may be a good idea to offer your neighbor financial compensation for the inconvenience caused. The amount can be negotiated between the parties, depending on the extent of the use.
What to do if your neighbor refuses
If your neighbor refuses access, don't panic. Mediation by a notary or a professional mediator can help resolve the conflict. As a last resort, you can take your case to court, which can impose a servitude de tour d'échelle. However, this option should be avoided wherever possible, because of its cost and length.