First Renovation? A Beginner's Roadmap
A step-by-step guide for Singapore homeowners starting a first renovation: budget, permits, contractors, timeline and how to avoid costly mistakes.
To start a home renovation project in Singapore, begin by setting a realistic budget, then define your scope and must-have changes, get at least three itemised quotes, verify the contractor is HDB-licensed if you own an HDB flat, and lock down permits before any work begins. A typical HDB renovation runs from around $30,000 for light work to $70,000 or more for a full overhaul, though the figure depends heavily on your flat size, materials and how much you change.
The order matters more than most first-timers expect. Planning and paperwork happen before demolition, not during it. Rushing to hacking and hoping to sort out the details later is the single most common way a first renovation blows past its budget and timeline. This roadmap walks you through the sequence, from first budget to final handover.
How much should I budget for my first renovation?
Set your budget before you fall in love with a design. As a rough guide, a light refresh of an HDB flat (painting, some carpentry, minor works) often lands around $20,000 to $35,000, while a full renovation of a 4-room or 5-room flat commonly falls between $45,000 and $75,000. Condo units can cost more because of longer access rules and higher-end finishes. Treat these as ranges, not promises: the real number depends on your flat's size, condition and the materials you pick.
Always hold back a contingency of about 10 to 15 percent of your budget. Hidden issues like old wiring, water damage or uneven walls are common in older flats and almost always surface once work starts.
- Light refresh (paint, minor carpentry): roughly $20,000 to $35,000
- Full HDB renovation: roughly $45,000 to $75,000
- Contingency buffer: 10 to 15 percent on top
- Big cost drivers: carpentry, tiling, and moving wet areas
What should I plan before I hire anyone?
Get clear on scope first. Walk through your home and separate needs from wants: what must change for the space to work, and what is nice to have if budget allows. Note whether you want to hack any walls, redo flooring, rewire, move plumbing points, or rebuild the kitchen and bathrooms, since these are the items that move the price the most.
Collect reference photos and rough measurements, and think about how you actually live day to day. A clear brief lets every contractor quote on the same scope, which is the only fair way to compare prices later.
Do I need permits or approvals?
Often, yes. For HDB flats, many works require an HDB renovation permit, and certain jobs (such as hacking, and floor finishes) have specific rules on timing and materials. Your contractor usually applies for the permit on your behalf, but the responsibility to renovate within the rules sits with you as the flat owner.
Some works also touch national regulations. Electrical work beyond simple fittings should be done by a licensed electrical worker, and plumbing changes to the incoming water supply must be carried out by a PUB-licensed plumber. If you live in a condo or private property, check your management corporation (MCST) house rules for permitted hours, deposits and approval forms before you start.
- HDB flats: renovation permit for many works, applied via your contractor
- Hacking and flooring: follow HDB rules on timing and approved materials
- Electrical: use a licensed electrical worker for anything beyond minor fittings
- Plumbing to the water main: must use a PUB-licensed plumber
- Condos: check MCST house rules, deposits and working hours
How do I choose a contractor and compare quotes?
For HDB homes, insist on a contractor from the HDB Directory of Renovation Contractors (the licensed list), since only they can carry out certain HDB works. Ask to see recent projects, check reviews, and confirm who your point of contact will be on site.
Get at least three quotes and compare them line by line, not just the bottom total. A cheap headline price often hides a thin scope, cheaper materials, or works that get charged as extras later. Look for a clear breakdown, brand and quantity of materials, a payment schedule tied to milestones, and a stated timeline.
- Use HDB-licensed contractors for HDB works
- Get three or more itemised quotes on the same scope
- Compare materials, quantities and inclusions, not only the total
- Prefer staged payments tied to completed milestones, never full payment upfront
What does a realistic renovation timeline look like?
Plan for the paperwork and design phase to take a few weeks before any hacking begins. The physical works for a standard HDB flat commonly run about six to ten weeks, with larger or more complex jobs taking longer. Build in buffer time, since material delays and unforeseen repairs are normal.
A rough sequence helps you track progress and know what to expect at each stage.
- Weeks 1 to 3: finalise design, budget, contractor and permits
- Early works: hacking, then plumbing and electrical rough-in
- Middle: flooring, tiling, plastering and carpentry
- Late: painting, fixtures, appliances and cleaning
- Final: joint inspection and defect checklist before final payment
How do I get the work done properly?
The safest path is to engage one accountable team that can handle the full renovation, including the electrical and plumbing trades, so responsibility is not split across parties who blame each other when something goes wrong. Coordinated trades also keep the sequence clean, for example running wiring and pipes before walls are closed up.
When you look into professional renovation services, confirm the team is properly licensed for HDB works, uses a licensed electrical worker for wiring and a PUB-licensed plumber for water supply changes, and gives you a written scope, schedule and warranty. Clear documentation is what protects you if a defect appears months later.
What mistakes do first-timers make?
The classic errors are predictable and avoidable. Most come from skipping planning, chasing the lowest price, or paying too much too early.
Knowing the common traps upfront helps you sidestep them.
- Paying a large deposit or the full sum before work is done
- Choosing a quote purely on price and discovering hidden extras later
- No contingency fund for hidden repairs in older flats
- Vague scope, so every change becomes a variation charge
- Skipping the final defect inspection before releasing the last payment
Frequently asked questions
How long does a first HDB renovation take? Expect a few weeks of planning and permits, then roughly six to ten weeks of on-site work for a standard flat. Complex jobs, larger units and material delays can extend this, so build in buffer time.
How much deposit should I pay a renovation contractor? Never pay the full amount upfront. A common structure is a modest deposit to secure the booking, followed by staged payments tied to completed milestones, with a final portion held back until you have inspected the work.
Do I need HDB approval to renovate my flat? Many works need an HDB renovation permit, and some jobs like hacking and flooring have specific rules. Your contractor usually applies for it, but as the owner you are responsible for renovating within the rules.
Can I use any electrician or plumber? For anything beyond minor fittings, electrical work should be done by a licensed electrical worker, and changes to your water supply must be carried out by a PUB-licensed plumber. Using licensed trades protects your safety and your warranty.