Why Choose Double Storey?
Going vertical offers unique advantages for Australian homes
Maximize Space
Double your living area without sacrificing valuable yard space
Add Property Value
Second storey additions significantly increase home value
Privacy & Views
Elevated living spaces with better views and privacy
Design Freedom
Create separate living zones and family retreats
Popular Second Storey Options
Transform your home with these premium double storey additions
Master Suite Addition
Luxury master bedroom with ensuite and walk-in robe
Second Storey Addition
Complete second floor with multiple bedrooms and living space
Upper Level Living
Open-plan living, dining and kitchen with stunning views
Family Wing
Self-contained upper level with kitchenette for extended family
Important Considerations
What to know before starting your second storey project
Structural Assessment
Professional engineering assessment to ensure your existing structure can support a second storey safely
Council Approval
Comprehensive planning application and compliance with local building codes and height restrictions
Timeline Planning
Expect 6-9 months from design to completion, including approvals and construction
Budget Planning
Investment of $3,000-$4,500 per m², including structural work, stairs, and finishes
Our Proven Process
From structural assessment to completion in 5 steps
Structural Assessment
Engineer inspects existing structure and foundation
Design & Planning
Architectural plans and council approval
Detailed Quote
Comprehensive pricing including all structural work
Construction
Professional build with minimal ground floor disruption
Completion
Final inspection and quality assurance
Frequently Asked Questions
Everything you need to know about second storey additions
Can my house support a second storey?
A structural engineer assesses your existing foundation, walls, and structure to determine if they can support a second level. Many homes can, but some require reinforcement work. We arrange this assessment as part of our initial consultation.
How much does a double storey extension cost?
Double storey extensions typically cost $3,000-$4,500 per square metre, including structural modifications, new stairs, and finishes. A 60m² second storey addition averages $180,000-$270,000 depending on specifications.
Do I need to move out during construction?
Most families can remain in their home during construction, though there will be noise and some disruption. We work carefully to minimize impact and typically complete external work before internal connections.
How long does construction take?
From start to finish, expect 6-9 months including approvals (2-3 months) and construction (4-6 months). Timeline varies based on design complexity, weather, and structural requirements.
Will it add value to my home?
Yes! Second storey additions typically add $150,000-$300,000+ in property value when done well. The ROI is excellent as you gain significant living space without using land.