Sample Answer
Evaluating Construction Procurement Methods and Employer Considerations
Introduction
Construction procurement shapes how risk, responsibility, cost and time are managed throughout a project. Choosing the correct method is one of the most important decisions an employer makes because it influences project control, contractor relationships, design flexibility and the final outcome. The most common procurement paths include Design Bid Build, Design and Build, Guaranteed Maximum Price, Target Price Contracts, Management Contracting, Construction Management, Build Operate and Transfer, and various partnership based arrangements. Each method comes with its own benefits and limitations, and employers must weigh these carefully against project size, complexity, funding, risk appetite and the need for design certainty. This essay critically evaluates the advantages and disadvantages of these major procurement routes and highlights the main issues that employers need to consider when selecting the most suitable delivery method.
Analysis and Discussion
Design Bid Build (DBB)
Design Bid Build remains the most traditional approach used in the UK and internationally. Its main advantage is the clarity of roles. The design team produces full drawings and specifications before contractors bid, which provides cost certainty once the contract is awarded. It also supports transparency and competitiveness because contractors price a complete design. However, DBB is often criticised for slow delivery and limited contractor involvement during design, which can lead to buildability challenges on site. Employers need strong contract administration, and disputes can arise when designs are unclear or when variations occur. The lack of early collaboration is a major disadvantage for complex projects.
Design and Build (D & B)
Design and Build offers a single point of responsibility. The contractor manages both design and construction, which can shorten the programme and reduce claims between designers and builders. Employers benefit from a simplified relationship and often faster delivery. The major drawback is reduced design control for the employer, especially if the contractor opts for cost saving solutions that meet minimum specifications but compromise long term quality. Employers choosing D and B must prepare a clear employer’s requirements document because any ambiguity gives the contractor more freedom to interpret the brief.
Guaranteed Maximum Price (GMP)
A Guaranteed Maximum Price contract caps the total cost, which is attractive for employers needing strict budget control. Any overspend beyond the cap is the contractor’s liability. This creates incentives for efficiency and careful cost management. However, contractors may increase contingency allowances within their pricing or resist changes that threaten the GMP. Employers must also be aware that overly ambitious caps can cause quality reductions or strained relationships. GMP works best when the design is well developed and the parties trust each other.
Target Price Contracts
Target cost arrangements such as NEC Target Cost Contracts promote collaboration by sharing underruns or overruns between employer and contractor. They encourage a joint approach to risk, early problem solving and cost transparency. The main disadvantage is the administrative burden required to track costs accurately. If cost information is weak or trust is low, disputes can arise about allowable expenses. Employers must have strong project management skills to ensure the target cost is realistic.
Management Contracting
Management contracting allows the employer to appoint a management contractor who then engages trade contractors. This offers flexibility, fast tracking and early contractor involvement. It is suitable for large and complex projects where design continues during delivery. The downside is cost uncertainty, because work packages are tendered as the project progresses. Employers also retain more financial risk. This route suits organisations with experience, strong leadership and the capacity to engage actively with the project team.
Construction Management (CM)
Construction management gives even more control to the employer, who holds contracts directly with trade contractors. The construction manager acts as an adviser rather than taking contractual risk. This allows full transparency and rapid decision making. However, the employer carries all financial and performance risk, including contractor failures. It is resource intensive and most appropriate for sophisticated clients who understand construction risk and want maximum control.
Build, Operate and Transfer (BOT)
BOT is common in large infrastructure projects where the private sector finances, builds and operates an asset for a defined period before transferring it back to the public authority. Employers benefit from private investment, risk transfer and expert long term asset management. The disadvantages include long contract periods, complex negotiations and reduced public control during operation. BOT is unsuitable for small projects and requires strong regulatory and governance frameworks.
Partnership Contracts
Partnership and collaborative contracting approaches, including frameworks and alliancing, focus on shared goals, transparency and teamwork. These arrangements can improve innovation, reduce disputes and create long term relationships. However, they require cultural alignment and trust. If incentives are unclear or performance monitoring is weak, collaboration can become superficial. Employers must ensure balanced risk sharing, clear objectives and reliable performance indicators.
