HDB Renovation — a room-by-room cost blueprint
Starting an HDB Renovation feels exciting until the quotes arrive. The trick is to know the rules, the budget bands and the storage you truly need before any wall comes down.
A Realistic Budget Band for 2025
As a market observation, a 4-room BTO renovation often lands around S$30,000 to S$50,000, while a 5-room BTO runs about S$40,000 to S$60,000.
Resale flats usually cost more, with a 4-room resale commonly in the S$50,000 to S$80,000 range because of hacking, rewiring and waterproofing.
These are observations, not quotes. Your finishes and the amount of carpentry move the number more than the size of the flat alone.
A simple spreadsheet of quotes stops the 'I thought that was included' moment every owner dreads.
What an HDB Renovation Actually Covers
An HDB Renovation is more than a fresh coat of paint. It usually covers carpentry, flooring, light plumbing and electrical works, plus the built-in storage that turns a flat into a home that fits your routine.
Most owners start by listing the rooms that bug them daily, then match each problem to a fix that suits both the space and the budget. That simple habit prevents the expensive mid-project changes that blow timelines.
Think of renovation as solving how you live, not just how the flat looks. The kitchens, bedrooms and bathrooms you use most deserve the largest slice of attention and money.
A simple spreadsheet of quotes stops the 'I thought that was included' moment every owner dreads.
Hiring a BCA-Licensed Contractor
Only a BCA-licensed contractor on the HDB Directory of Renovation Contractors may carry out the works. Always verify before signing.
From 1 October 2024, renovation contracts of S$5,000 and above fall under the CaseTrust Renovation Foreign Worker Levy Protection Scheme, with itemised 'Open Book' pricing.
Ask to see past jobs similar to yours. A contractor strong in carpentry may be weak in tiling, and you want the mix your project needs.
Visit a finished flat by the same contractor before you sign; photos flatter, real drawers tell the truth.
The Living Room That Flexes
The living room wears many hats: TV corner, play space, guest area. Low, modular storage keeps it adaptable.
Leave clear sightlines from the door so the room feels open rather than cramped the moment you step in.
One focal wall is enough. Competing accents in every corner make even a large room feel busy and tired.
Keep a small contingency for the things you only notice once you actually live in the space.
Study Corners in Tight Flats
Even a 4-room flat can hide a study nook. A built-in desk against a quiet wall, with cable management, does the job.
Good task lighting and a comfortable chair matter more than square footage, because you feel the chair and the light every day.
Keep the study visually separate from the sleep zone so the bedroom still feels like a place to rest.
A simple spreadsheet of quotes stops the 'I thought that was included' moment every owner dreads.
Working With a Layout That Already Exists
HDB flats come with a fixed layout, and most structural elements cannot move. Good design works with those lines instead of fighting them.
Built-in carpentry along existing walls often solves storage without touching a single beam, which keeps the permit simple and the cost down.
Resist the urge to copy a show flat. Your doorway positions and window light are unique, and the plan should respect them.
Lock your colour and material choices before production starts, because changes mid-build are rarely free.
Good renovations are less about drama and more about getting the basics right. Measure twice, quote itemised, and you will move in without the usual regrets.
