
Quantity Surveying &
Commercial Advisory
Supporting contractors across infrastructure and civil projects nationwide





Supporting clear, controlled, and commercially sound project outcomes
Claims & Variations
Preparation, assessment, and support for contract claims and variations.
Clear, structured submissions aligned with contract provisions and supported by site records, ensuring issues are presented on a sound commercial basis.
Commercial Management
Contract administration, cost reporting, and commercial oversight.
Practical, site-based input to maintain financial control, manage risk, and support informed decision-making.
Tender Support
Tender review, pricing support, and submission preparation.
Development of clear, well-structured tenders and commercial responses that reflect project requirements, risk, and delivery strategy.

Delivered across a range of infrastructure and civil construction projects
Project Experience:
3 Waters infrastructure (water, wastewater, stormwater)
Roading and civil works
Subdivision and land development
Public sector and council projects
Commercial Experience:
Contract administration under NZS 3910-style contracts
Claims preparation and assessment
Variation management and cost control
Tender preparation and evaluation
Tender Support
Tender review, pricing support, and submission preparation.
Development of clear, well-structured tenders and commercial responses that reflect project requirements, risk, and delivery strategy.

Contractors
Claims, variations, and commercial management supportTender preparation and pricing supportSite-based QS input
Clients / Councils
Independent commercial oversightCost control and reportingContract administration support
Consultants
Additional QS resource when requiredSupport during peak workload or project delivery phases

Clear, structured, and commercially focusedAligned with contract provisions and project requirementsPractical, site-based understandingFocused on clarity, control, and resolution

Contact Illustris Consulting
Available for short-term, project-based, or ongoing commercial support


Rotokauri Transport Hub
Rotokauri Transport Hub

State Highway 1 Underpass
State Highway 1 Underpass

Kopaki Bridge Replacement
Kopaki Bridge Replacement

Drury - Subdivision
Drury - Subdivision