The employer must provide drawings together with a description of works, and either a specification or work schedules at tender stage. The project is generally not complex enough to require bills of quantities.
JCT contracts are known for being highly prescriptive. Although the standardised format may provide clarity, it can also limit flexibility. Each JCT contract is structured around a specific set of terms and clauses, which may not suit every project's unique needs or challenges.
BOQ vs BOM While a bill of quantities (BOQ) includes an itemized list of all project costs — including materials and labor hours — a bill of materials (BOM) only includes materials. Some general contractors include a BOM in the bid packages for subcontractors, on large and small projects alike.
Contracts 'with quantities' are priced on the basis of drawings and firm bills of quantities. 'Without quantities' means a contract priced on the basis of drawings and usually another document, such as a specification or work schedules.
Lump Sum Contracts Contracts 'with quantities' are priced on the basis of drawings and firm bills of quantities. 'Without quantities' means a contract priced on the basis of drawings and usually another document, such as a specification or work schedules.
The term 'without quantities' refers to a construction contract or tender documents that do not include specific measured quantities of the items of work identified by the drawings and specifications. It can be used on projects where it is not possible to prepare a bill of quantities (BOQ) at the time of tendering.
NEC contracts are considered a modern alternative to construction contracts used in the past. Introduced in 1993, NEC contracts are often used for larger, more complex projects, such as public sector projects or those requiring complex infrastructure construction.
JCT contracts offer a comprehensive structure for construction projects, but they are not without their limitations. Recognising the disadvantages of JCT contracts—such as limited flexibility, complex language, and potentially high costs—can help clients and contractors approach these agreements with greater awareness.
Both contracts are straightforward agreements written in plain English. The JCT HO/O has two versions: one with a consultant and one without, while the RIBA DBC is a single version that can be administered by you or a consultant.