The partial or total renovation of a lift and the creation of an elevator must consider several important criteria:

- Compliance with the following codes,

- The evaluation of all related work around the device to create or upgrade,

- A detailed study to identify the solution best adapted to the environment before starting a budget to be safe to invest for the long term and to ensure that preliminary work were unnecessary in a later stage.

- Follow up work in order that the contractor complies with its commitments.

- A final audit prior to operation to remove all deficiencies and monitor compliance following the technical.