- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 16 Jun 2018
Maintenance is the process of ensuring that buildings and other assets retain a good appearance and operate at optimum efficiency. Inadequate maintenance can result in decay, degradation and reduced performance and can affect heath and threaten the safety of users, occupants and others in the vicinity.
There are a number of different types of maintenance. NRM3: Order of cost estimating and cost planning for building maintenance works, defines ‘scheduled maintenance’ as:
Where preventative maintenance as:
'...the planned and controlled programme of maintenance and inspection carried out at predetermined intervals (or corresponding to prescribed criteria) and intended to reduce the probability of failure or degradation of the functioning of an item. This includes inspections, adjustments, cleaning, lubrication and/or selective replacement of components (e.g. filters) and minor repairs, as well as performance testing and analysis intended to maximise the reliability, performance and life cycle of building systems, equipment, etc. Preventive maintenance consists of many checkpoint activities on items that, if disabled, may interfere with an essential installation operation, endanger life or property, or involve high costs or long lead times for replacement.'
- Unplanned maintenance (or unscheduled or reactive maintenance).
- Proactive maintenance.
- Reliability centred maintenance.
 Find out more
 Related articles on Designing Buildings Wiki
Featured articles and news
European ports in a historic and global perspective. Book review.
The post-war response to blitz and blight.
Could you be our new editor?
Evaluating occupant satisfaction.
The Ancona eco-mansion
What is the cost of not getting it right first time?
The government announces a new role as part of a wider package of safety reform.
Lessons for the next UK road investment strategy.
Architectural Technology Studio 3
Construction Industry Advisory Committee CONIAC
The real impact of late payment.
How to tell which infrastructure projects will work.