- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 14 Sep 2020
On construction management contracts, a construction manager is appointed on a consultancy and management basis to provide advice to the client during the pre-construction stages and then to manage the construction of the works. The works are divided into packages which are contracted to separate contractors. These contractors are referred to as trade contractors rather than sub-contractors (as they are contracted directly by the client, rather than being sub-contracted to the construction manager). The separate appointment of trade contractors should reduce the cost of contracts, as the management element is being provided by the construction manager. It also allows the advancement of some works (such as groundworks or piling) which might begin even before design of the above-ground works is complete.
Characteristics of trade contracts include:
- Trade contractors may be appointed through a single-stage procurement process, or through a two-stage process with a pre-construction services agreement for the first stage.
- Each trade contract must have its own separate practical completion certification and so they may have different defects liability periods. Certification cannot be dependent on completion of works outside of the scope of the contract. As trade contracts may be completed at different times, the construction manager must ensure that measures are in place to protect completed work from ongoing activities.
- Trade contracts (such as the Joint Contracts Tribunal (JCT) CM/TC 2011) do not include provisions for liquidated damages, instead the trade contractor indemnifies the client's direct loss and/or expense for lateness.
- Trade contracts may allow for retention, or may include a requirement for a retention bond.
- Trade contracts should include requirements to adopt collaborative practices.
- As there is no main contractor, trade contractors should provide master programmes for their works.
- Trade contractors should be required to provide regular information in relation to key performance indicators.
- Where they carry out design, trade contractors may be required to provide as-built drawings.
- On management contracts, contractors are known as 'works contractors'.
- For a detailed description of the sequence of tasks necessary on a construction management contract, see the work plan: construction management: outline work plan.
NB A trades contractor (with an 's') is a more general term which simply refers to a contractor who undertakes a particular class of construction work, such electrical installation. See Trades contractor for more information.
 Related articles on Designing Buildings Wiki
- Back-to-back provisions in construction contacts.
- Collaborative practices.
- Collateral warranties.
- Construction manager.
- Construction contract.
- Contractors master programme.
- Main contractor.
- Management contract.
- Procurement route.
- Types of contractor.
- Works contractor.
Featured articles and news
The seismic strengthening of historic churches.
Results show guarded optimism and payment concerns.
Noteworthy navigable aqueducts.
Technology is making remote work a reality.
Carefully placed structures add drama to pastoral vistas.
Report provides actions required by 2030 to achieve a zero carbon economy.
What type of cool roof is most suitable?
Active Travel programme prioritises cyclists and pedestrians.
CIAT issues caution for use of new standard.
Industry leaders discuss climate change, the economy and other influences.
The building manager is key to operations.
The impact Scotland’s dynamic coast has on the historic environment.