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Professional services sub-consultancy agreement. 2017 edition (Incorporating January 2017 amendments)

ACE Agreement Sub-consultancy

Professional services sub-consultancy agreement. 2017 edition (Incorporating January 2017 amendments)

Document Status



Core Supplement


ACE Agreement


Provides a simplified version suitable for all types of clients including contractors and end users and can be used in all UK jurisdictions. Covers the terms of the contract, execution and an alternative execution for use in Scotland.


Replaces ACE Agreement 4 Sub-consultancy (2009 edition, second revision) (ACE, 2009) and ACE Agreement 4 (Scotland) Sub-consultancy (For use in Scotland) (2009 edition, second revision (Scotland)) (ACE, 2009).




Publisher History

Formed 80 years ago as the Association of Consulting Engineers, the Association for Consultancy and Engineering produce the ACE Agreements and guidance material for the engineering industry.



NBS has produced specification systems and information products for construction industry professionals for more than 40 years. The National Building Specification is the recognised UK national standard and is used by over 5,000 organisations. NBS is part of RIBA Enterprises Ltd.

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