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October 13, 2023
What is the Difference between Design-Build and Design-Bid-Build?

In the world of construction, two widely used project delivery methods are Design-Build and Design-Bid-Build. Each approach has its unique advantages and disadvantages, and understanding the key differences between them is crucial for both project owners and construction professionals. Whether you’re seeking the expertise of the Best General Contractors in Dubai, UAE or exploring project management options elsewhere, this blog will delve into the distinctions between Design-Build and Design-Bid-Build to help you make informed decisions when embarking on your construction project.


Design-Build is a project delivery method in the construction industry where a single entity, known as the design-build firm or contractor, is responsible for both the design and construction phases of a project. In this approach, the project owner typically signs a single contract with the design-build team, which may consist of architects, engineers, contractors, and other specialists. Here’s how the Design-Build method works:

Single-Source Responsibility: The design-build approach combines design and construction under one contract. This means that the design-build entity is responsible for the entire project, from initial concept to project completion.

Collaborative Approach: Design-Build encourages collaboration between the design and construction teams right from the project’s inception. This integrated approach allows for better communication, problem-solving, and potentially more innovative solutions.

Faster Project Delivery: One of the primary advantages of Design-Build is its potential for faster project delivery. The design and construction phases can overlap, reducing the overall project timeline.

Flexibility: Design-Build projects often allow for design modifications even during the construction phase, making it a suitable choice for projects where changes might be required.

Single-Point of Contact: With a single entity responsible for design and construction, there’s one point of contact for the project owner, simplifying communication and decision-making.


Design-Bid-Build is a more traditional and linear project delivery method. It involves a clear separation of the design and construction phases. Here’s how the Design-Bid-Build method works:

Sequential Phases: In the Design-Bid-Build approach, the project is divided into sequential phases. First, the design phase begins, where architects and engineers create detailed plans, specifications, and drawings.

Competitive Bidding: Once the design phase is complete, the project owner solicits competitive bids from contractors. Contractors submit proposals, and the project contracts are typically awarded to the lowest bidder who meets the project specifications.

Clear Separation: Design- Bid- Build maintains a clear separation between design and construction phases. The design is typically finalized before the contractor is involved, which can lead to less flexibility for design changes once construction begins.

Accountability: In Design- Bid- Build, the project owner holds separate contracts with the designer (architect or engineering firm) and the contractor. This separation allows for clearer accountability for each phase.

Detailed Specifications: Since the design must be fully completed before the bidding process, Design- Bid- Build projects tend to have highly detailed and well-defined specifications, potentially reducing ambiguities during construction.

The choice between Design-Build and Design-Bid-Build ultimately depends on the specific needs and priorities of a construction project. Whether you’re working with MEP Contractors in Dubai, UAE or considering other construction professionals, both methods have their advantages and drawbacks, and the decision should be based on careful consideration of the project’s unique requirements. Understanding the differences between these two approaches is essential in ensuring the success of any construction endeavour.

LAADS is an integrated general construction company capable of Engineering, Design, Authority approvals, Civil works, MEP works and Interior Fitout. Connect with us to learn more in detail