KNOCKDOWN REBUILD FEASIBILITY
Knockdown Rebuild Feasibility Checklist: What to Check First
Before deciding to demolish, confirm that the new-home pathway works for the property, budget and timing.
Short answer
A knockdown rebuild should be tested for feasibility before demolition is committed. Review planning controls, title restrictions, vegetation, access, services, demolition requirements, soil and levels, likely site costs, design goals, finance and the timing of approvals. The aim is to understand the whole project, not only the cost of the new house.
Confirm the property can support the project you want
Check planning controls, overlays, title restrictions, easements, trees and the relationship to neighbouring properties.
These constraints can influence the size, position and form of the replacement home.
Include demolition in the feasibility review
Demolition involves more than removing the old house. Services, access, hazardous materials, permits, waste handling and site protection may all affect the programme and cost.
The demolition scope should be coordinated with the new-home design rather than treated as an isolated job.
Understand site costs before comparing house prices
- ✓Soil and footing requirements
- ✓Slope and excavation
- ✓Rock
- ✓Retaining walls
- ✓Drainage
- ✓Service connections
- ✓Restricted access
- ✓Temporary works
Compare rebuild with renovation or extension
A knockdown rebuild can solve layout, structural and energy-performance limitations of an older home, but it also means demolition, full new-home approvals and temporary accommodation.
The best option depends on the condition of the existing house, desired outcome, site constraints and total project budget.
Questions homeowners ask
What should I check first for a knockdown rebuild?+
Start with planning and title constraints, site conditions, access, services, demolition requirements and whether the proposed new home fits the property and budget.
Should I demolish before the new design is approved?+
It is usually safer to coordinate demolition with design, approvals, finance and the construction programme so the site is not cleared before the replacement project is sufficiently certain.
Can a builder help with knockdown-rebuild feasibility?+
Yes. Early builder input can help identify demolition, access, structural and site-cost drivers before detailed design is complete.
Is knockdown rebuild always cheaper than renovating?+
No. The comparison depends on the existing home, design goals, demolition, site works, approvals and the extent of renovation that would otherwise be required.
Ready to discuss your project?
Tell EBC what you are planning and we will help you work through the practical next steps.
EBC services Melbourne's Eastern Suburbs. View service areas.
Related EBC pages
- Knockdown Rebuild Melbourne Eastern Suburbs
- Knockdown Rebuild Process
- Demolition Before Renovation or Rebuild
- Renovate, Extend or Rebuild?
- Site Costs Explained