Model CategoryTraditional / Sequential Delivery
Payment MechanismFixed Price / Bid-Based
Time HorizonMedium-Term
Typical SectorsInfrastructure, Civil, Industrial
Strategic Applications
Projects with Clear Specifications
DBB is ideal when the project scope is **well-defined**, and the owner wants full control over design decisions before construction starts.
Infrastructure & Civil Works
Commonly used for roads, bridges, water/wastewater systems, and buildings where separate contracts for design and construction suit project management needs.
Project Suitability Analysis
DBB works best for **projects with low design uncertainty**, requiring clear owner oversight and precise design specifications before construction begins.
Risk Considerations & Mitigation
Key risks include **construction delays due to design errors**, cost overruns, and communication gaps between designer and contractor. Mitigation relies on **detailed contracts, quality assurance, and owner supervision**.
Comparable & Alternative Models
Design–Build (DB) · EPC · EPCM · Turnkey / LSTK
This platform supports DBB projects by connecting owners with designers and contractors, enabling **structured sequential delivery** with clear design ownership and controlled construction execution.