Resale HDB Renovation Guide Singapore 2026: What's Different from BTO 🔍 A resale HDB renovation in Singapore costs 20–40% more than a BTO renovation of equivalent scope and typically takes 10–14 weeks to complete. The additional cost comes from demolition, hacking of existing tiles and finishes, potential rewiring of outdated electrical systems, re-waterproofing of bathrooms, and rectification of hidden defects discovered after stripping. This guide covers every key differen