Why Energy Shocks Matter for Construction

Fuel, Freight and Material Costs

Construction is energy‑intensive. Rising oil prices flow directly into the costs of transporting materials and operating machinery. Economists note that war‑induced energy shocks tend to push up fuel prices, affecting households and businesses alike. In Australia, fuel makes up roughly 3.3 % of the Consumer Price Index (CPI), so higher prices feed into headline inflation. Reserve Bank of Australia (RBA) governor Michele Bullock recently cautioned that it is “too early” to know how the Middle East conflict will affect domestic inflation, but she warned that a supply shock could add to inflationary pressures.

The construction sector relies on petroleum‑based products such as bitumen for roads, plastics, roofing membranes and asphalt; it also consumes large volumes of diesel for excavators, cranes and generators. Higher fuel costs raise the price of these inputs and inflate overall project budgets. In the U.S., legal analysts have reported that shipping disruptions and rising fuel prices have already increased costs for materials like cement, steel, concrete and aluminium, many of which are produced or sourced in the Middle East. Major shipping lines have diverted vessels away from the Gulf or temporarily halted services, imposing “conflict surcharges” that are passed through the supply chain.

For NSW builders, the supply chain is global. Steel reinforcement, aluminium window frames, copper wiring and mechanical equipment often arrive via shipping routes that transit the Middle East or draw on energy‑intensive manufacturing. Copper prices have surged 16.5 % year on year, driven by global electrification and data‑centre demand. Insolvencies in the construction sector have also risen—1 , 894 insolvencies were recorded in the financial year to 10 February 2026, the highest of any industry. These structural pressures mean that any additional cost escalation from a geopolitical shock could stress cash flows and margins.

Shipping Delays and Project Scheduling

Besides price, conflict causes delays. Maritime authorities report that several vessels have been struck or damaged near the Gulf, prompting insurers to reassess risk. As shipments are rerouted around the Cape of Good Hope or other longer pathways, lead times extend. Legal experts warn that shipping disruptions increase both transportation and production costs, delaying the delivery of critical materials and disrupting project sequencing. Contractors may be forced to secure temporary storage for materials that arrive earlier than needed or must be held until routes reopen, adding handling and insurance costs.

Such delays can have cascading effects on construction schedules: waiting for imported façade components or mechanical systems stalls other trades, extends site preliminaries and increases exposure to liquidated damages. Force majeure clauses in contracts may or may not cover “war”; therefore, contractors should review provisions related to cost escalation, supply‑chain disruption and force majeure. Projects currently in the procurement phase should build in contingencies for volatile material prices and longer shipping times.

Financial Implications: Inflation, Interest Rates and Property Demand

Inflation and Interest Rates

Inflationary pressure from higher fuel and freight costs can influence monetary policy. As noted, the RBA is monitoring the situation but warns that events are moving rapidly. If sustained energy price shocks lift inflation expectations, the central bank could delay or reverse anticipated interest‑rate cuts. Markets currently expect the RBA to hold rates in March but lift them in May. For property developers and homebuyers, higher borrowing costs reduce affordability and limit the appetite for new projects.

A prolonged conflict may also dent confidence in the residential market. API Magazine observes that if shipping in the Strait of Hormuz is restricted, fuel prices could soar and freight costs for other products could be impacted, potentially reigniting inflation and placing upward pressure on interest rates. Professors Vito Mollica and Peter Robertson caution that if the war is brief, the impact could resemble past geopolitical flare‑ups; but if it persists and materially disrupts oil supply or shipping routes, the inflation impulse could become entrenched.

Property Market and Developer Confidence

Higher interest rates and construction costs can dampen demand for new housing and commercial projects. U.S. homebuilding commentary notes that early 2026 already saw demand tracking slightly higher but margins lower, as builders used incentives to maintain sales. The Iran war introduces uncertainty through oil price volatility, mortgage‑rate volatility, shipping costs and timing of critical components. Although this analysis is U.S.‑centred, the mechanisms are similar in Australia. NSW developers rely on bank financing and pre‑sales; volatile rates and costs can cause buyers to delay decisions. As long‑term yields and credit spreads fluctuate due to global risk, the cost of capital for developers rises, and banks may tighten lending criteria.

NSW Construction Industry: A Growth Engine Facing New Headwinds

The State of the Industry

New South Wales has been Australia’s construction powerhouse. A ten‑year study by business service provider Honcho found that construction services have expanded by 29 % over the past decade. NSW hosts 32 % of all construction businesses in Australia, making it the nation’s primary construction hub. The suburb of Guildford has even emerged as the country’s fastest‑growing construction hub. Year‑on‑year business registrations in construction have risen by 2.5 % nationwide, with NSW seeing particularly strong growth. This boom has been underpinned by large public infrastructure projects, continued urban development and a pipeline of residential and mixed‑use towers in Sydney and its growth corridors.

How the War Could Affect NSW Builders

While NSW’s construction industry is resilient, its scale makes it susceptible to global shocks:

Strategies for NSW Construction Stakeholders

1. Review contracts and risk allowances. Ensure that force majeure and escalation clauses explicitly address war, trade sanctions and supply‑chain disruption. Include provisions allowing adjustments for fuel surcharges, freight delays and material price spikes.

2. Secure supply chains and diversify sourcing. Where possible, source materials from regions not dependent on the Hormuz corridor. Maintain higher inventory levels of critical items such as reinforcement steel, formwork hardware and mechanical systems. Evaluate domestic alternatives for bitumen or consider long‑term supply agreements with suppliers outside the Middle East.

3. Factor in longer lead times in project scheduling. Adjust construction programmes to account for potential delays; maintain flexibility in sequencing so that work can continue while awaiting delayed components.

4. Build fuel‑price escalation into budgets. Consider hedging strategies for bulk fuel purchases or using fuel‑adjustment clauses in subcontracts. Evaluate energy‑efficient machinery and electrified equipment where feasible to reduce reliance on diesel.

5. Monitor macro‑economic indicators. Keep abreast of RBA statements, inflation data and commodity prices. If the conflict persists, prepare for possible interest‑rate increases and slower demand. Engage financial advisors early to secure funding before volatility worsens.

6. Communicate transparently with clients. Developers should educate clients about the geopolitical risks affecting project costs and timelines. Transparent communication helps manage expectations and fosters collaboration in adjusting scope, contingency allowances and delivery strategies.