Yes — and most new GCBs are knock-down rebuilds rather than original-stock houses. The 2-storey cap, 35% site coverage limit, and minimum 1,400 sqm plot all apply. URA Outline Planning Permission is required before construction.
Planning constraints
- Storeys: Maximum 2 (plus basement and attic).
- Site coverage: Maximum 35% of plot area.
- Plot ratio: Not the primary control here — the 2-storey cap binds first.
- Setbacks: Minimum side/rear setbacks per URA guidelines.
- Heritage: Some GCB plots fall under conservation overlays; check before demolition.
Cost benchmarks (2026 estimates)
| Item | Indicative range |
|---|---|
| Demolition | $100-300K |
| Build cost (premium GCB) | $500-800 psf GFA |
| Pool + landscaping | $200-500K |
| Smart-home + AV | $100-300K |
| Total rebuild on 1,400 sqm plot | $8-15M |
Process timeline
Typical rebuild project: 18-30 months from URA Outline Planning Permission to TOP. Faster projects exist; slower ones (especially with heritage overlay) routinely run past 36 months.
This is a rough outline — engage a qualified architect + project manager before committing.