Give each opening its own condition record
Identify the damaged door and describe the other door’s operation without assuming they share the same fault. They may have different repair histories or hardware. A proposal should state what work applies to each opening rather than using one broad line for the entire garage.
Compare the exterior result
If the original design is still available, confirm the offered construction and finish. A new door may still look different beside an older one. Review panel proportions, window locations and color samples together so the choice is based on the expected pair rather than a single catalog image.
Coordinate access and controls
Explain whether one opening can remain available while the other is worked on. If operators or remotes are also changing, identify which control should operate which door. Keep the final model and service records separate for each opening to avoid confusion at the next visit.
Your questions
Must both doors use the same opener model?
Not necessarily. Each assembly needs suitable equipment and clear control setup.
Can parts be moved between the two doors to save money?
Do not assume interchangeability. Compatibility and condition must be assessed before any parts are reused.