How long does knockdown rebuild take?

Allow 12-18 months total: design (2-3 months), approvals (2-3 months), demolition (2-4 weeks), construction (6-9 months). New builds on vacant land typically take 9-12 months from signing.

What are hidden costs with knockdown rebuild?

Watch for: asbestos removal ($5,000-$15,000 extra), upgraded services (power, water), tree removal permits, temporary accommodation, and storage for your belongings during the build.

Decision Guide

New Build vs Knockdown Rebuild

Vacant land or established suburb?

Both give you a brand new home, but the experience is quite different. New builds on vacant land in estates offer simplicity. Knockdown rebuilds let you stay in established areas with the home you want.

New Build (Vacant Land)

Pros

Simpler process with fewer complications
Often more affordable overall
Display villages make visualisation easy
Modern estates with planned amenities
No demolition costs or asbestos issues
Builder handles everything on a clean site
House and land packages available
Generally faster from decision to completion

Cons

Limited to available land locations
New estates may lack established character
Amenities may be years away in new areas
Everyone building at once in new estates
Less established trees and gardens
May be further from CBD or work
Cookie-cutter feel in some estates
Land prices have risen significantly

Best For

• First home buyers seeking value
• Those happy with growth corridor locations
• People wanting straightforward process
• Families prioritising new home over location
• Those comfortable with developing areas

Knockdown Rebuild

Pros

Stay in your preferred established suburb
Known neighbourhood and community
Established schools, shops, transport
Mature trees and gardens in area
Often larger blocks than new estates
Existing services already connected
Potential for better capital growth
Keep your location, upgrade your home

Cons

Demolition adds $15,000-$30,000+
Potential asbestos removal costs
More complex council requirements
Heritage or character area restrictions
Need to manage neighbours during build
Site access can be challenging
Temporary accommodation needed
Overall cost often higher than new estate

Best For

• Those who love their suburb but not their house
• Families in good school zones
• People wanting established area benefits
• Those with larger blocks to work with
• Buyers prioritising location over cost

Cost Comparison

Common Questions

It depends on your priorities. If you love your location, school zone, or community, KDR lets you keep that while getting your dream home. If location is flexible, new build in an estate is usually better value.

Sources

Last verified June 2026

ABS Building Activity, Australia (June 2026 quarter). Average build cost and floor area for a new detached house, used as the build-side anchor. link
Cotality (CoreLogic) Home Value Index (2026). Established-house values used as the buy-side comparison. link
State revenue office — transfer (stamp) duty (2026). Buying an established home attracts transfer duty; duty on a new build is generally on land only. Rates vary by state. link
Housing Industry Association (HIA) (2026). New-home build-cost and activity commentary. link

Cost ranges are planning estimates cross-checked against the sources above, not quotes. Prices move with materials, labour, site conditions and council rules. Always confirm against a written, fixed-price quote for your own block.