10 Costly Renovation Mistakes Singapore Homeowners Keep Making

Mistake 1: Choosing Based on Price Alone The cheapest quote almost always costs you more in the long run. Low-ball quotes typically exclude essential work like waterproofing, use inferior materials that degrade within 2 years, or involve subcontracting to unlicensed workers. When things go wrong, there is no accountability. The Fix: Compare at least 3 itemised quotations side by side. Ensure each quote covers the same scope before comparing price. Mistake 2: Not Budgeting for Contingency Every renovation encounters surprises. For BTO flats, expect 5 to 10 percent in unexpected costs. For resale flats, budget 15 to 20 percent. Failing to set aside contingency means you either cut corners at the end or go into debt. Mistake 3: Ignoring Electrical Planning Modern homes need far more power points than most people think. The average 4-room flat needs 50 to 70 power points when you account for kitchen appliances, charging stations, study desks, and entertainment systems. Adding points during renovation costs S$70 to S$100 each. Adding them after costs S$200 or more per point. Mistake 4: Over-Designing and Under-Storing Feature walls, elaborate ceiling details, and decorative niches look beautiful in photos but eat into precious square footage. In a 90 sqm HDB flat, every centimetre of wall space is potential storage. Prioritise built-in storage first, then decorate whatever space remains. Mistake 5: Choosing Materials Based on Looks Alone That gorgeous white marble-look tile will stain within months if it is porous. Those beautiful dark wood-grain laminates show fingerprints and scratches instantly. Always ask about maintenance requirements, stain resistance, and warranty before selecting materials. Mistake 6: Starting Renovation Without a Complete Design Change orders during renovation are expensive. Moving a power point after tiling costs 3 to 5 times more than getting it right the first time. Finalise every detail, including power point locations, carpentry dimensions, tile selections, and paint colours, before the first hammer swings. Mistake 7: Not Checking the Designer’s Track Record A beautiful portfolio website means nothing without verified reviews from real homeowners. Ask for references, check online reviews across multiple platforms, and visit a completed project if possible. Find Verified Designers → Every designer on Reno Research is vetted with verified reviews and project portfolios. Browse designer profiles and read real homeowner feedback. Mistake 8: Skipping the Contract A proper renovation contract protects both parties. It should include an itemised scope of work with material specifications, a payment schedule tied to milestones (never pay more than 10 percent upfront), start and completion dates with penalty clauses for delays, warranty terms (minimum 1 year), and a defect rectification process. Mistake 9: Renovating Without Understanding HDB Rules HDB imposes strict rules on renovation works. Violating them can result in fines of up to S$5,000 and orders to reinstate the original condition at your expense. Common violations include hacking structural walls, enclosing balconies without approval, and installing floor tiles without proper sound insulation. Mistake 10: Not Using Technology to Your Advantage Gone are the days of blindly trusting a single contractor recommendation. Today, platforms like Reno Research use algorithms to match you with the right designers, provide cost calculators for accurate budgeting, and offer group buy features for material discounts. Not leveraging these tools means paying more for less. Start Your Renovation Right → Download the Reno Research App to access designer matching, cost calculators, group buy deals, and a step-by-step renovation task tracker.