The True Cost of Your Office Space Decision
When a project requires temporary office space, the instinct is often to look at the daily hire rate and stop there. But a proper cost comparison between traditional built space and portable solutions needs to account for the full cost lifecycle — acquisition, fit-out, operating costs, and decommissioning. When you run the full numbers, portable solutions often outperform conventional options by a significant margin.
Traditional Built Office: Full Cost Breakdown
Capital Costs
- Construction — $2,000–$4,000/m² for a basic temporary building; $3,500–$6,000/m² for a quality fit-out
- Services connection — power, water, sewerage: $15,000–$50,000 depending on distance to services
- Planning and approvals — $5,000–$20,000 for DA/CDC approval; 3–8 months timeline
- Fit-out — furniture, IT, security: $15,000–$40,000 for a 100m² office
Ongoing Costs
- Rates and land tax (if owned)
- Commercial rent: $250–$800/m²/year depending on location
- Building maintenance: typically 1–2% of build cost per year
- Energy costs: standard commercial building, not optimised for temporary use
Decommissioning
- Demolition: $50–$150/m² depending on structure type
- Site remediation
- Waste disposal
Portable Office Trailer: Full Cost Breakdown
Capital Costs (Purchase)
- 5.7m portable office — $35,000–$65,000 depending on specification
- Delivery to site — $800–$3,000 depending on distance
- Setup — levelling, steps, connection: $500–$2,000
- Power connection — typically $500–$1,500 to connect to site board
Total acquisition cost: ~$40,000–$72,000 — comparable to one year’s commercial rent for equivalent floor space in most Australian cities.
Hire Option
- Short-term hire (weekly): $250–$600/week depending on size and specification
- Long-term hire (12+ months): $800–$1,800/month — often including maintenance
- No capital outlay, no depreciation, no disposal cost
Ongoing Costs
- Energy — reverse-cycle air conditioning is highly efficient; typical monthly cost $150–$400
- Maintenance — minimal for quality trailers; typically $500–$2,000/year
- Relocation — $800–$3,000 per move, amortised over project life
End of Project
- If purchased — sell at 50–70% of purchase price after 3–5 years (quality trailers hold value well)
- If hired — return to supplier, no decommissioning cost
Scenario Comparison: 3-Year Construction Project, 5-Person Office
| Cost Element | Commercial Lease | Portable Office (Hire) | Portable Office (Purchase) |
|---|---|---|---|
| Acquisition/deposit | $30,000 | $0 | $55,000 |
| Annual occupancy cost | $45,000 | $15,600 | $3,600 |
| 3-year total occupancy | $135,000 | $46,800 | $10,800 |
| Setup / fit-out | $25,000 | $2,000 | $2,000 |
| Exit / disposal | $15,000 | $0 | -$30,000 (sale) |
| Total 3-Year Cost | $205,000 | $48,800 | $37,800 |
When Portable Solutions Make the Most Sense
- Project duration under 5 years — the fixed costs of a permanent building are harder to amortise
- Multiple site locations — the ability to relocate is a genuine economic asset
- Uncertain project timeline — lease commitments and demolition costs create financial exposure that portable solutions avoid
- Remote or temporary sites — where services connections would be prohibitively expensive
Contact us for a tailored cost comparison for your specific project requirements.