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Cost Estimation & Quantity Surveying

Scope-Assumption-Based Estimates

Focused scope-assumption-based estimates support with documented scope, quantities, assumptions and practical project deliverables.

What this solves

Keep the budget moving when the documents are not complete.

Assumption-based estimating fills defined information gaps with transparent quantities, systems and allowances instead of hiding uncertainty inside one number.

We separate known scope from inferred scope, record the basis for each major assumption and identify the decisions that could materially change cost. The estimate remains useful while making uncertainty visible.

Best fit for

  • Developers budgeting incomplete designs
  • Design teams between project milestones
  • Contractors pricing design-build opportunities
  • Owners evaluating scope before full documentation
01

Identify gaps

Review available information and list missing scope that affects pricing.

02

Build assumptions

Define reasonable systems, quantities and allowances for unresolved work.

03

Report exposure

Issue the estimate with an assumption register and priority cost risks.

Start this service

Share what is known—we’ll identify the gaps.

Request an assumption-based estimate