Design Considerations for Second Storey Extensions
We assess your existing home’s structure to create functional upper-level spaces. Key factors include:
- Roof design compatibility with original architecture
- Staircase placement for minimal ground-floor disruption
- Window positioning for natural light and privacy
- Material selection to match or contrast existing finishes
3D models show how new spaces interact with current layouts. We address load-bearing requirements and foundation capacity early to avoid structural issues.
Cost Factors in Second Storey Projects
Project budgets depend on:
- Size: Larger extensions cost more but improve cost efficiency per square metre
- Structural upgrades: Reinforcing foundations or walls for added weight
- Fixtures: Premium bathrooms or kitchens increase expenses
- Site access: Narrow blocks may require manual material handling
Prices typically range between $1,850 and $3,500 per square metre. We provide fixed quotes after completing site assessments and design approvals.
Construction Process Overview
Site Preparation
Install safety scaffolding and protect existing roofing. Set up temporary weatherproofing.
Structural Work
Reinforce load-bearing walls and install steel beams. Build new floor frames and external walls.
Services Installation
Coordinate licensed trades for electrical, plumbing, and HVAC systems. Insulate walls and ceilings.
Interior Finishes
Install plasterboard, flooring, and cabinetry. Paint walls and fit lighting fixtures.
Final Compliance
Arrange council inspections for occupancy certificates. Test smoke alarms and safety switches.
Approval and Compliance Requirements
All projects require:
- Building permits confirming structural safety
- Engineering reports for foundation capacity
- Heritage overlays compliance where applicable
- BAL assessments in bushfire-prone areas
We manage council submissions and address planning scheme requirements. Permit timelines vary between 1-3 months depending on municipality.
Maximising Space and Functionality
Relocate bedrooms upstairs to create open-plan living areas downstairs. Add skylights to internal rooms without exterior windows.
Built-in storage under eaves or within stair cavities reduces clutter. North-facing balconies extend outdoor living spaces.
Split-level designs accommodate sloping blocks without major excavation. Zoned heating/cooling systems improve energy efficiency.