NEC Contract data
NEC was first published in 1993 as the New Engineering Contract. It is a suite of construction contracts intended to promote partnering and collaboration. The third edition, NEC3 was published in 2005. The fourth, and currently latest edition NEC4, was published in 2018.
The contract documents under the NEC Engineering and Construction Contract (ECC) are:
- The form of agreement.
- Conditions of contract.
- Contract data.
- Prices, activities schedules and bill of quantities.
- Works information (describing what is to be done on the site).
- Site information (describing the condition of the site before the work starts).
NEC define the contract data as information that ‘…needs to be completed as part of the necessary contract documents; in the ECC this contains details such as starting date/Completion Date/employer details/defects date and the like. It is in two parts; part one (provided by the employer) and part two (provided by the contractor).’
Part one, data provided by the employer, is completed by the employer and might include data relating to:
- Details of the employer and key personnel.
- The location of the works information and site information.
- The language and law to be adopted.
- The period for reply.
- Options for adjudication / arbitration.
- Starting date / defects date / defects correction period.
- Payment details.
- Options for compensation events.
- Risk and insurance.
- Confidentiality.
- Construction operations.
- Employees.
- Intellectual property.
- Novation.
- Termination.
- Data protection.
- Force majeure.
- Early warning / compensation events.
- Disallowable expenses.
Part two, data provided by the contractor, is completed by the contractor and might include data relating to:
- Details of the contractor and key personnel.
- The location of the programme.
- The location of works information for contractor’s design.
- The location of the activity schedule.
- Direct fee percentage.
- Subcontractor fee percentage.
- Working areas (including offices).
- Details to be included in the risk register.
- The tendered price.
- Cost components.
It is very important that the contract data is completed carefully as it is this information that structures the way the contract is administered.
[edit] Find out more
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Professional practical experience for Architects in training
The long process to transform the nature of education and professional practical experience in the Architecture profession following recent reports.
A people-first approach to retrofit
Moving away from the destructive paradigm of fabric-first.
International Electrician Day, 10 June 2025
Celebrating the role of electrical engineers from André-Marie Amperè, today and for the future.
New guide for clients launched at Houses of Parliament
'There has never been a more important time for clients to step up and ...ask the right questions'
The impact of recycled slate tiles
Innovation across the decades.
EPC changes for existing buildings
Changes and their context as the new RdSAP methodology comes into use from 15 June.
Skills England publishes Sector skills needs assessments
Priority areas relating to the built environment highlighted and described in brief.
BSRIA HVAC Market Watch - May 2025 Edition
Heat Pump Market Outlook: Policy, Performance & Refrigerant Trends for 2025–2028.
Committing to EDI in construction with CIOB
Built Environment professional bodies deepen commitment to EDI with two new signatories: CIAT and CICES.
Government Grenfell progress report at a glance
Line by line recomendation overview, with links to more details.
An engaging and lively review of his professional life.
Sustainable heating for listed buildings
A problem that needs to be approached intelligently.
50th Golden anniversary ECA Edmundson apprentice award
Deadline for entries has been extended to Friday 27 June, so don't miss out!
CIAT at the London Festival of Architecture
Designing for Everyone: Breaking Barriers in Inclusive Architecture.
Mixed reactions to apprenticeship and skills reform 2025
A 'welcome shift' for some and a 'backwards step' for others.