当合同用于维护或其他建筑或工程，而合同计划在规定的期限内运行时，与规定的工作范围的合同相反。它还可用于提供服务（设计除外），如检查和测试、清洁、涂漆、预防性维护、维修或已完工工程中部件的更新。在定义合同工程时，需要明确服务是什么，承包商是否有向委托人提供所有此类服务的专有权，或其权利是否受到限制。这一新标准是在NZS 3910:2003的有限技术审查之后制定的，该审查只关注建筑部门的反馈意见，因此措辞更清晰，对广泛的特殊条件的需求减少。 该标准包括Word表单明细表，这些明细表可能包含项目特定的详细信息。

Intended for use when contracts are let for maintenance or other building or engineering works where the contract is intended to run for a defined period of time, as opposed to a contract for a defined scope of work. It might also be used for the provision of services (other than design) such as inspection and testing, cleaning, painting, preventative maintenance, repairs, or renewal of components within completed works. When defining the Contract Works, it needs to be made clear what the services are, and whether the Contractor has the exclusive right to provide all such services to the Principal, or whether its right is limited in extent. This new Standard was developed following a ¿¿¿limited technical review¿¿¿ of NZS 3910: 2003, which focused only on feedback from the construction sector, and resulted in clearer wording and a reduced need for extensive special conditions. The Standard includes Word form schedules that may be completed with project specific details.