Singapore’s Most Prestigious Homes: A Deep Dive into Good Class Bungalow Renovations

Owning a Good Class Bungalow (GCB) in Singapore is the ultimate symbol of success. These rare landed homes are located only in select districts, carefully protected by URA zoning guidelines. But buying a GCB is just the beginning — to truly reflect a homeowner’s vision and lifestyle, renovation or rebuilding becomes a necessity.

This article provides a comprehensive 2025 guide for homeowners planning to renovate or rebuild their GCBs. From cost breakdowns and design strategies to approval processes and hidden risks, you’ll learn everything needed to make informed decisions.

What Sets Good Class Bungalow Renovation Apart

Unlike HDBs or standard landed homes, GCBs come with strict planning regulations and design expectations:

• Plot Size: Minimum 1,400 sqm, ensuring exclusivity.
• Height Restrictions: Maximum two storeys plus attic.
• Greenery Requirements: At least 60% of the site must remain landscaped.
• Approval Oversight: All major works require submissions by a Qualified Person (QP).
• Neighbourhood Character: Renovations must harmonise with the surrounding estate.

This means GCB renovation projects are not only about luxury but also about compliance, sustainability, and long-term value preservation.

Choosing Between A&A and Full Rebuild

When approaching GCB renovation, homeowners typically face two routes: Addition & Alteration (A&A) or complete rebuilding.

Addition & Alteration (A&A)

• Ideal for homes with solid structural foundations.
• Allows updating of façades, layouts, and interiors.
• More cost-effective and faster to execute.
• Costs: S$1.28m – S$3.4m
• Duration: 12–24 months

Full Rebuild

• Suitable for older bungalows with outdated or weakened structures.
• Offers total design freedom: basements, rooftop terraces, infinity pools, and modern smart systems.
• Higher investment but maximises long-term property value.
• Costs: S$4.25m – S$10.2m+
• Duration: 24–36 months

Updated Cost Guide for 2025

💡 Tip: Always allocate an additional 10–15% for contingency. Unforeseen issues such as soil conditions or material shortages are common.

Key Steps in the Renovation Journey

1. Site Assessment – Detailed surveys, soil checks, and architectural feasibility.
2. Concept Design – Space planning, 3D visualisation, and budgeting.
3. Approval Submissions – QP-led applications to URA and BCA.
4. Construction Phase – Structural works, M&E installations, carpentry, and finishes.
5. Final Handover – Quality checks, defect rectification, and warranty support.

Design Trends Defining Modern GCBs

Resort-Like Living

Outdoor pavilions, landscaped courtyards, and swimming pools create a private retreat.

Grand Interiors

Double-volume living rooms, open-plan layouts, and imported finishes deliver a sense of scale and elegance.

Smart & Sustainable Systems

Solar panels, EV charging docks, and intelligent home automation are now must-haves.

Bespoke Carpentry

Custom wardrobes, wine cellars, and luxury kitchens enhance daily living while adding value.

Hidden Costs You Should Anticipate

Even the best-planned projects can encounter surprises. Common hidden costs include:

• Foundation strengthening for older plots.
• Upgrading power, water, or drainage connections.
• Delays in imported materials like marble or glass.
• Neighbourhood management requirements (hoarding, noise control, traffic).

Case Study: A Bukit Timah Transformation

One homeowner purchased a 30-year-old bungalow in Bukit Timah. The property had small rooms, outdated finishes, and poor ventilation.

• Solution: Full rebuild with a basement lounge, rooftop terrace, and cross-ventilated galleries.
• Timeline: 30 months.
• Result: Property value increased by 25% post-completion, and the family now enjoys a brighter, quieter, and more energy-efficient home.