The multi-annual maintenance plan is seen as THE tool to get an insight in the maintenance costs of buildings. Because this plan gives insight in the costs on both the short and long term, you can determine a maintenance policy to lower future maintenance costs.
Multi-annual maintenance plans for the short and long term are already a common good for most real-estate owners. If in a year the maintenance costs will be high due to for example the renovation of the roof top, a budget can be reserved or some maintenance can be moved along or adjusted. This way a policy can be executed where there is no more room for surprisingly high maintenance costs.