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

Rotokauri Transport Hub

State Highway 1 Underpass

State Highway 1 Underpass

Kopaki Bridge Replacement

Kopaki Bridge Replacement

Drury - Subdivision

Drury - Subdivision