improvement project; construction plan
Refers to a plan for building, upgrading, or improving infrastructure, facilities, or systems. Often used in public works, urban development, or corporate facility planning.
The city announced a park improvement project.
The road construction plan will start next fiscal year.
maintenance plan; maintenance schedule; maintenance program
Focuses on scheduled upkeep, repair, or servicing of existing equipment, facilities, or systems. Common in engineering, IT, and facility management contexts.
We need to create a maintenance plan for the elevator.
The factory machines are inspected according to the maintenance schedule.