Contract Date

The NEC Contract Date is simply the day the contract came into existence. It isn't the starting date, the tender date or the date on the front of the document, unless those happen to coincide. It matters mainly because several risks are judged from what could be foreseen on that day.

The definition is in clause 11.2 (item 4 in NEC3 ECC). It looks like the dullest term in the list of NEC definitions. It only gets attention when a large claim depends on it.

Where the date does its work

Provision	What the Contract Date does
60.1(12) physical conditions	Asks what an experienced contractor would have judged likely, looking from this date
60.1(19) prevention and clause 19	Tests whether the event was too unlikely to allow for, as seen from this date
Option X2 changes in the law	Only a change taking effect after this date counts

So the date acts as a line in the sand for knowledge and foreseeability. Move the date, and you might change what an experienced contractor would be expected to have priced.

How it differs from similar dates

Date	Where it comes from	What it does
Contract Date	When the contract was actually formed	Viewpoint for foreseeability
Starting date	Contract Data	Begins contractual time and starts various periods
Access date	Contract Data	When the Contractor gets the Site or a part of it
Completion Date	Contract Data, as later changed	The finish deadline
Base date for Option X1	Contract Data, where used	The reference point for inflation indices

Notice that the definition doesn't send you to the Contract Data for the value. The date is a matter of fact, and the contract records no slot for it in the standard data.

Why it causes problems

Construction contracts often take a messy route to signature. There's a tender, a period of negotiation, perhaps a letter of intent, and then signed documents some months later. When was the contract actually formed? That's a question of ordinary contract law, not of NEC, so a contested point needs legal advice. The practical job is to avoid the question by making the date clear at the time.

A worked example

A fictional river wall scheme, with illustrative dates:

• January: the Contractor tenders using ground information it has at the time.
• March: the Client issues a letter of intent for design and enabling works only.
• April: trial pits under the letter of intent reveal an old concrete raft, and everyone sees the results.
• June: the NEC contract is signed, with no change to the price. Piling then hits the raft.

The Contractor argues that an experienced contractor pricing in January wouldn't have allowed for the raft. But if the Contract Date is June, the test is applied at a point when the raft was already known about. On those facts, the compensation event looks much weaker. The price wasn't updated, but the viewpoint moved. The same reasoning applies to a change in the law published between tender and contract.

Practical steps

1. State the date clearly, for example in the contract agreement or the Client's acceptance letter, so that it's recorded for later use.
2. Before signature, ask what's become known since tender: surveys, trial pits, draft laws, and supplier news.
3. If something's changed, deal with it in the price or the Contract Data before signing, and don't assume the tender position still holds.
4. If a letter of intent comes first, be clear whether it forms a separate agreement, and take legal advice if there's real money at stake.

NEC subcontracts use a separate date with the same purpose, so the subcontract's viewpoint may be later than the main contract's. That matters on back-to-back arrangements, where an event might qualify under one contract and not the other.

Related guides

• NEC Definitions: A Glossary of Key Terms
• Defect
• Defect Correction Period
• Defects Certificate
• Completion Date
• Contract Data

This guide is general information in our own words, not legal advice. Your contract and its Contract Data always govern. NEC, NEC3 and NEC4 are trade marks of Thomas Telford Ltd; Contract Status is not affiliated with or endorsed by NEC.