Knock Down Rebuild Timeline: How Long Does It Take?

One of the most common questions homeowners ask is: how long will my knock down rebuild take? The answer depends on several factors, but here's a realistic timeline.

Phase 1: Feasibility & Planning (4–8 weeks)

Before any work begins, you'll need to:

• Engage a KDR builder for a site assessment
• Finalise your floor plan and inclusions
• Obtain preliminary cost estimates
• Arrange financing (construction loan pre-approval)

Phase 2: Demolition (1–2 weeks)

Once approvals are in place, demolition is relatively quick:

• Utility disconnections: 1–3 days
• Asbestos removal (if required): 2–5 days
• Structural demolition: 1–2 days
• Site clearance: 1–2 days

Phase 3: Design & Council Approvals (8–16 weeks)

This is often the most variable phase:

• Finalising detailed design and engineering: 2–4 weeks
• Lodging development application: 1 week
• Council assessment: 6–12 weeks (faster with CDC/complying development)

Phase 4: Construction (6–12 months)

Construction follows the standard new home build timeline:

• Slab and earthworks: 2–4 weeks
• Frame: 2–3 weeks
• Lock-up (roof, windows, brickwork): 8–16 weeks
• Fit-out (plaster, kitchen, bathrooms, fitings): 10–20 weeks
• Practical completion and handover: 2–4 weeks

Phase 5: Handover (1–2 weeks)

After the practical completion inspection and any rectifications, you receive the keys.

Total Timeline Summary

Phase	Duration
Feasibility & planning	4–8 weeks
Demolition	1–2 weeks
Design & approvals	8–16 weeks
Construction	6–12 months
Handover	1–2 weeks
Total	8–14 months

Factors That Can Delay Your KDR

• Council delays — complex applications or objections from neighbours
• Weather — heavy rain can delay slab and earthworks
• Material shortages — supply chain issues can extend construction
• Design changes — variations during construction add time
• Site issues — unexpected rock, poor soil, or contamination