UP DEN GUNN
Independent Estimating & Commercial Advisory
Capital confidence for
mining, EPCM,
and infrastructure.
Up Den Gunn provides senior-led estimating, pre-contracts advisory, and commercial governance across the full project lifecycle — where cost certainty, delivery realism, and independent judgement are critical.
01
Project & Study Estimating
Class 1–5 estimates from OOM through detailed tender, grounded in real delivery experience.
02
Contractor Tender Support
Senior estimating leadership for competitive bids — pricing strategy, risk positioning, and governance.
03
Independent Cost Reviews
Unbiased validation, benchmarking, and assurance for owners, boards, and financiers.
04
Commercial & Pre-Contracts
Governance frameworks, tender handovers, and commercial discipline from tender through delivery.
SERVICES
A full spectrum of
commercial expertise
Estimating & Cost Management
01
Full project lifecycle estimating with a strong emphasis on transparency, traceability, and commercial defensibility.
-
OOM and Concept Estimates (Class 5 & 4)
-
Pre-Feasibility and Feasibility Estimates (Class 3 & 2)
-
Detailed Tender Estimates (Class 1)
-
Schedule of Rates (SOR) development
-
Escalation modelling & P50/P90 contingency
-
Independent estimate validation and peer review
Pre-Contracts & Tender Advisory
02
Senior commercial judgement and bid leadership through the full pre-contracts phase.
-
Go / No-Go decision support
-
Tender strategy and pricing philosophy
-
Risk and opportunity workshops
-
Bid commercial reviews and contractual risk
-
Post-tender clarifications and VE support
Commercial & Governance Advisory
03
Strengthening commercial discipline and governance where estimating outcomes transition into delivery.
-
Estimating procedures and governance frameworks
-
Tender handover processes
-
Cost control and earned value frameworks
-
Independent estimate audits and assurance
-
Contract pricing mechanism review
Capability Building
04
Uplifting internal estimating capability and reducing long-term reliance on external consultants.
-
Expert Estimation (Genesis) setup and refinement
-
Standardised estimating libraries and databases
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Procedures, checklists, and training material
-
Mentoring of estimators and pre-contracts managers
-
Embedded support and knowledge transfer
ABOUT
Estimating that
earns its authority
Up Den Gunn is a lean, owner-led advisory practice built on one principle: that estimating must remain independent of delivery pressure. Accurate capital decisions require clarity, realism, and the confidence to challenge assumptions.
"Senior judgement. No junior hand-offs. No conflicted delivery incentives. Direct access to the principal — on every engagement."
Founded by Jan Gunnink, Up Den Gunn draws on deep contractor, EPCM, and owner-side experience across Western Australia's civil, mining, and energy sectors. Up Den Gunn stands for power in council — reflecting the firm's role in providing trusted, authoritative advice at critical project decision points.
Senior-led from day one
Every engagement is led and delivered by an experienced principal. Advice is practical, credible and immediately actionable.
Delivery-Informed Estimating
Cost advice grounded in real construction methodology, productivity, access, and sequencing — reducing the gap between estimate and execution.
Independence & Objectivity
Unbiased advice free from delivery, design, or volume incentives, supporting sound governance and defensible decision-making.
Transparency & Traceability
Clear assumptions, inclusions, exclusions, and traceable cost build-ups so clients can understand, challenge, and defend estimates with confidence.
Capability Uplift, Not Dependency
Engagements are structured to strengthen internal capability, not create reliance on ongoing external consultants.
Sectors & Capabilities
Where Up Den Gunn
operates
Deep, hands-on expertise across the disciplines most commonly encountered in civil, mining, and energy infrastructure — grounded in practical delivery and informed by current WA market rates and productivity norms.
Mining & Resources
Greenfield and brownfield mine infrastructure across live operating environments, integrating with production constraints, shutdown-driven works, and client operational requirements.
ROM PADS
HAUL ROADS
CAMP & FACILITIES
HEAVY TRAFFIC PAVEMENTS
BROWNFIELD TIE-INS
I
II
Energy & Power
Specialist estimating at the civil–electrical interface across substations, cable infrastructure, and renewable energy enabling works — where scope gaps, productivity loss, and commercial risk most commonly arise.
SUBSTATIONS
SOLAR & BESS
Civil & Earthworks
Extensive expertise from bulk earthworks and mass haul through to pavements, drainage structures, and ground improvement — with a strong focus on constructability and productivity modelling.
BULK EARHWORKS
MASS HAUL
PAVEMENT DESIGN
GROUND IMPROVEMENT
DRAINAGE
III
CABLE TRENCHING
HV INFRASTRUCTURE
TRANSMISSION
Structural & Building
Detailed estimating across structural, concrete, and industrial building works — integrating civil, mechanical, and electrical scopes with strong consideration of temporary works and access constraints.
IN-SITU CONCRETE
STRUCTURAL STEEL
INDUSTRIAL BUILDINGS
FORMWORK SYSTEMS
IV
Utilities & Services
High-risk, interface-heavy utilities estimating with a strong focus on service identification, protection, relocation sequencing, and constructability within live operating environments.
WATER & SEWER
PROCESS SERVICES
SERVICE RELOCATION
PUMP STATIONS
V
Indirects & Risk
Senior expertise in preliminaries, project overheads, and risk — the primary drivers of cost overrun. Estimates are structured to ensure indirects and risk fully align with programme, methodology, and delivery strategy.
PRELIMINARIES
P50/P90 RISK
CONTINGENCY
ESCALATION
VI
HOW WE ENGAGE
Senior-led.
Clearly defined.
Always confidential.
All engagements begin with a confidential introductory discussion. Up Den Gunn operates under NDA from the outset and exercises disciplined go/no-go selection to ensure full commitment to every client.
1
Confidential Enquiry
Reach out directly. All enquiries are treated as confidential. NDA executed before substantive disclosure.
2
Scope & Alignment
Clear definition of objectives, deliverables, timeframes, and commercial terms before any engagement commences.
3
Senior-Led Delivery
All work led directly by the principal. No delegation to junior resources without explicit agreement.
4
Defensible Outcomes
Traceable, auditable deliverables that clients can present to boards, financiers, and governance bodies with confidence.
MODEL 01
Time-Based Advisory
Hourly or daily rates for advisory, review, assurance, and embedded support roles where scope may evolve.
Ongoing advisory support providing priority access and cost certainty for preferred clients across their project pipelines
MODEL 02
Defined-Scope Engagements
Lump-sum pricing for clearly scoped estimates, studies, peer reviews, or capability development tasks with defined inclusions and exclusions.
MODEL 03
Retainer Arrangements
MODEL 04
Embedded Support
Short-term placement within client teams during peak workload periods or critical project phases, with knowledge transfer built in.
These results are accurate up to June 2018
CONTACT
Inquiries
For any inquiries, questions or commendations, please call: 0431 225 680 or fill out the following form
Contact Details
Employment
As the business grows there is always a need for excellent people, should you wish to be part of an exciting industry then please send a cover letter together with your C.V.