Contract Comparison Tool
Compare construction contract types side by side. Understand risk allocation, payment mechanisms, and which contract suits your project best
Select Contract Types to Compare
Choose two different contract types for side-by-side comparison
Frequently Asked Questions
What is the difference between BOQ and lump sum contracts?
BOQ (Bill of Quantities) contracts have remeasurement based on actual quantities, with shared risk. Lump sum contracts have a fixed price at award, with most risk on the contractor. BOQ is better when quantities are uncertain; lump sum is better when scope is well-defined.
Which contract type is most common in Saudi Arabia?
Lump sum contracts are most common in Saudi private sector projects (70-80%), especially for residential and commercial buildings. BOQ contracts are prevalent in government infrastructure projects and large civil works where quantities are hard to estimate upfront.
How do I choose the right contract type for my project?
Choose BOQ if: quantities are uncertain, scope may change, design is incomplete, or project is infrastructure. Choose lump sum if: scope is well-defined, design is complete, timeline is fixed, or project is residential/commercial. Consider your risk tolerance and payment cash flow needs.
What are the payment mechanisms for each contract type?
BOQ contracts use monthly measurement of work done against agreed BOQ rates. Lump sum contracts use monthly valuations against milestones or schedule of values. Both can have advance payments, retention, and performance bonds, but the timing and basis differ.
Can I combine contract types in a single project?
Yes, hybrid contracts are common. For example, infrastructure projects may have lump sum for mobilization and BOQ for earthworks. Large projects often split into packages with different contract types based on the certainty of each work package.
Stop Guessing, Start Analyzing
Trusted by thousands of contractors in Saudi Arabia