Optimising Warehouse Network Design for Retail Supply Chains in Australia and New Zealand

July 16, 2025

Warehouse Network Design – For Retail Supply Chains

In today’s highly competitive retail environment, your warehouse network is more than just a place to store products—it’s a critical lever for enabling speed, reducing costs, and responding to customer demand with agility. Retailers across Australia and New Zealand are feeling the pressure to make their supply chains leaner, more responsive, and future-proof—and at the centre of this transformation is effective warehouse network design.

Whether you’re a supermarket chain managing fresh product replenishment, a department store balancing store and eCommerce stock, or an online pure-play brand scaling rapidly across states, how your network is structured will materially impact service, cost, and capital.

At Trace Consultants, we help retailers take an objective, data-driven and solution-agnostic approach to network design. In this article, we’ll explore what makes a well-designed warehouse network, why it matters, and how to avoid common mistakes that lock in inefficiencies and unnecessary spend.

Why Warehouse Network Design Matters in Retail

The role of your warehouse network is to ensure the right product is in the right place at the right time—at the lowest possible cost.

A well-designed network:

  • Optimises inventory levels while maintaining availability
  • Reduces transport kilometres and delivery lead times
  • Supports omnichannel fulfilment (store, click & collect, and home delivery)
  • Reduces duplication of infrastructure, inventory, and effort
  • Enhances service levels and customer satisfaction
  • Scales with business growth and seasonality without constant redesign

In contrast, a poorly planned network can result in bloated inventory, costly emergency replenishments, missed delivery windows, and fixed costs that outstrip business need.

Common Triggers for Network Redesign in Retail

Organisations don’t undertake a warehouse network redesign lightly—it’s typically driven by major change. Common triggers include:

  • Lease expiries: Forcing a decision on whether to renew, relocate, or consolidate
  • Growth into new markets: State-by-state expansion or trans-Tasman eCommerce fulfilment
  • eCommerce acceleration: Needing faster fulfilment and more agile picking models
  • M&A or consolidation: Harmonising supply chains across banners or brands
  • High working capital or inventory duplication
  • Increased service failures or DIFOT performance issues
  • Sustainability goals: Reducing emissions and waste in the logistics network

If these sound familiar, it’s time to take a step back and look at your network through a strategic lens. Trace Consultants can help you assess your current network and model scenarios that align to your future business strategy.

Key Principles for Effective Warehouse Network Design

1. Objectivity is Critical

Network decisions should never be driven by opportunistic property deals or supplier pressure. These short-term “wins” often result in long-term inefficiencies. At Trace, we always begin with an objective diagnostic—free from pre-determined solutions—to define what the business actually needs.

We ask:

  • What are the strategic goals of the business (growth, margin, service)?
  • What level of inventory is needed to meet demand?
  • What service levels are expected across channels and regions?

Our independence means our recommendations are free from bias—we don’t sell properties, lease facilities, or push automation unless it’s justified by the business case.

2. Solution-Agnostic Thinking

Being solution-agnostic means we don’t start with the answer. Instead, we help you explore the right trade-offs between:

  • Centralised vs. decentralised networks
  • Owned vs. leased vs. 3PL
  • Manual vs. automated solutions
  • Dedicated eCommerce fulfilment vs. integrated models

Every option comes with cost, complexity, and operational implications. Through scenario modelling, Trace enables you to choose the model that best suits your business—not just today, but in five or ten years’ time.

Explore how we support this approach on our Supply Chain Services page.

3. Inventory-Informed Design

Inventory and network design go hand in hand. Where and how you hold stock has a direct impact on:

  • Working capital requirements
  • Replenishment speed
  • Safety stock levels
  • Inter-DC transfers and inventory duplication

At Trace, we combine demand forecasting and inventory analytics to ensure the network is designed around SKU behaviour, not just site location.

We segment inventory by:

  • Velocity (fast vs. slow movers)
  • Size and handling complexity
  • Channel-specific demand patterns
  • Shelf-life or perishability

This ensures facilities are designed for real operational needs—not just what fits on a floor plan.

4. Service-Responsive Modelling

Network design is only valuable if it delivers on service. That means being explicit about:

  • Store replenishment windows and cut-off times
  • Online order delivery SLAs
  • Frequency of dispatch to remote or regional locations
  • Returns handling and reverse logistics

If your new network design can’t meet your service promise without driving up costs, it’s the wrong design. At Trace Consultants, we integrate fulfilment and logistics planning into every scenario.

5. Scenarios and Sensitivity Analysis

There’s rarely one perfect answer. That’s why robust scenario modelling is at the core of our methodology. Trace runs multiple configurations to explore:

  • 2-site vs. 3-site vs. 5-site networks
  • Hybrid own/3PL models
  • Store vs. customer-fulfilment priorities
  • Automation readiness and ROI
  • State vs. regional vs. metro-focused strategies

We overlay volume projections, service metrics, labour availability, and transport costs to stress-test the options and build an evidence-based recommendation.

Critical Considerations in Retail Network Design

Beyond the strategic principles, retailers must evaluate several practical and commercial factors when redesigning their networks:

● Capacity and Throughput Planning

You must plan not just for average volumes but peak capacity—think Black Friday, Christmas, or end-of-financial-year promotions.

● Labour Availability and Cost

Warehouse performance hinges on your workforce. Proximity to labour markets, wage expectations, and temp/casual availability can make or break a site’s viability.

● Technology and Systems Readiness

WMS, OMS, TMS and planning tools need to support the network vision. A distributed model without system visibility will result in costly inefficiencies.

● Transport Integration

Warehousing and transport are interdependent. Every network decision must consider inbound linehaul, store deliveries, courier partnerships, and last-mile capabilities.

● Property Market Volatility

Lease duration, make-good clauses, exit flexibility, and capital investment requirements must all be carefully evaluated—especially in a volatile property market.

Trace Consultants’ multidisciplinary approach ensures you consider these dimensions holistically—not in siloes.

Impact on Inventory and Working Capital

A well-designed network doesn’t just cut freight—it frees up capital.

Poor network choices often result in:

  • Inventory duplication
  • Higher safety stock across nodes
  • Inter-warehouse transfers
  • Overstocking due to inaccurate replenishment logic

By integrating warehouse network strategy with inventory optimisation, we help retailers unlock working capital and reduce stock obsolescence.

Learn more about our Inventory and Planning support.

Risks of Poor Network Design

Getting this wrong can leave your business locked into multi-year costs and inflexible infrastructure. Common risks include:

  • Sites that are underutilised or oversized
  • Excess inventory in the wrong places
  • Inability to meet service commitments
  • Increased emissions and cost-to-serve
  • High lease break penalties or stranded capital
  • Failure to adapt to market or channel shifts

That’s why network design must be approached as a long-term, strategic decision—guided by data, not gut feel.

How Trace Consultants Can Help

At Trace Consultants, we work with some of Australia and New Zealand’s most recognisable retailers to design, model and implement high-performance warehouse networks.

We bring:

✅ Objective and independent advice – no vested interest in systems, property or suppliers
✅ Deep expertise in retail and omnichannel fulfilment
✅ Robust modelling tools and scenario planning capability
✅ End-to-end visibility from strategy through to implementation
✅ Experience across fresh food, general merchandise, eCommerce, and discount retail
✅ A collaborative style that brings your operations, finance and logistics teams along the journey

Whether you're reassessing your network post-COVID, planning a new distribution centre, or trying to reduce logistics cost-to-serve—Trace can support you through a structured, data-driven and pragmatic approach.

Explore our full range of Supply Chain Strategy and Optimisation services.

The warehouse network is not just the backbone of your supply chain—it’s a strategic asset that influences inventory, cost, service, and customer experience. For retail businesses in Australia and New Zealand, the stakes are higher than ever.

Getting the design right requires objectivity, being solution-agnostic, and a deep understanding of how your supply chain operates—from inbound freight and storage needs to customer service expectations and financial trade-offs.

If your business is considering network expansion, consolidation, or simply wants to sanity-check its current footprint—reach out to Trace Consultants. We’ll help you design a network that’s fit-for-purpose, future-ready, and financially sound.