Quantity Surveying &
Commercial Advisory
Supporting contractors across infrastructure and civil projects nationwide
Practical commercial support for contractors,
consultants, and clients
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.
Experience across infrastructure and
construction projects
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.
Supporting contractors, consultants, and clients
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
Our Approach
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
Projects
Rotokauri Transport Hub
Lead quantity surveying and commercial management for a $25m
multi-modal transport hub, including rail infrastructure, pedestrian bridge,
and bus interchange facilities.
State Highway 1 Underpass
Cost management and quantity surveying for a $3m pedestrian
underpass delivered within a live state highway environment.
Kopaki Bridge Replacement
Commercial and cost management for a $12m bridge replacement,
delivering a new overbridge structure across active rail and stream corridors.
Drury - Subdivision
Client-side cost management and contract administration for
subdivision infrastructure works, including water and wastewater networks.
Broader Experience
Extensive experience across major infrastructure and three waters projects in both New Zealand and the UK, including:Auckland Central Interceptor (wastewater tunnel)
Auckland Light Rail (pricing and bid support)
Queenstown town centre services renewals (water, gas, electrical)
Queenstown Lakes District Council – 3 waters infrastructure pricing
Multiple large-scale water and wastewater projects across the UK
How We Support Contractors
Tender pricing and commercial strategy
Variations, claims, and entitlement support
Contract administration (NZS 3910 and similar)
Cost control and reporting systems
Subcontractor management and procurement
Dispute avoidance and commercial risk management
