Main contract
In a contract there is reciprocity of undertaking passing between the promisor and the promisee. The rights and obligations of the parties to the contract are created by the acts of agreement between them.
In the procurement of construction, contracts can be:
- Standard forms.
- Modified standard forms.
- Bespoke.
The ‘main contract’ is generally that which is awarded by the client (sometimes referred to as the employer) to the general contractor, or main contractor, whose tender has been accepted. The works required from the main contractor are set out in detail in tender documents, for which they have offered a price that has been accepted by the client.
Main contractors are often appointed under a traditional contract to construct a development for which the design has already been completed by consultants appointed by the client. However, under other forms of main contract, they might also provide part or all of the design, facilities management services, and even financing.
The organisations that the main contractor may appoint to carry out specific aspects of the works for them may be described as ‘subcontractors’, 'subbies', or simply as 'suppliers'. They will be appointed by the main contractor under subcontracts, and subcontractors may themselves appoint subcontractors under sub-subcontracts, and so on. See suppy chain for more information.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Plumbing and heating for sustainability in new properties
Technical Engineer runs through changes in regulations, innovations in materials, and product systems.
Awareness of the Carbon Border Adjustment Mechanism
What CBAM is and what to do about it.
The new towns and strategic environmental assessments
12 locations of the New Towns Taskforce reduced to 7 within the new towns draft programme and open consultation.
Buildings that changed the future of architecture. Book review.
The Sustainability Pathfinder© Handbook
Built environment agency launches free Pathfinder© tool to help businesses progress sustainability strategies.
Government outcome to the late payment consultation, ECA reacts.
IHBC 2025 Gus Astley Student Award winners
Work on the role of hewing in UK historic conservation a win for Jack Parker of Oxford Brookes University.
Future Homes Building Standards and plug-in solar
Parts F and L amendments, the availability of solar panels and industry responses.
How later living housing can help solve the housing crisis
Unlocking homes, unlocking lives.
Preparing safety case reports for HRBs under the BSA
A new practical guide to preparing structural inputs for safety cases and safety case reports published by IStructE.
Male construction workers and prostate cancer
CIOB and Prostate Cancer UK encourage awareness of prostate cancer risks, and what to do about it.
The changed R&D tax landscape for Architects
Specialist gives a recap on tax changes for Research and Development, via the ACA newsletter.
Structured product data as a competitive advantage
NBS explain why accessible product data that works across digital systems is key.
Welsh retrofit workforce assessment
Welsh Government report confirms Wales faces major electrical skills shortage, warns ECA.
A now architectural practice looks back at its concept project for a sustainable oceanic settlement 25 years on.
Copyright and Artificial Intelligence
Government report and back track on copyright opt out for AI training but no clear preferred alternative as yet.






















