Bathroom renovations are usually fun — until they aren't. The most common reason a project goes off the rails is not bad workmanship but rushed decisions in the first week. Here are the conversations we wish every Klang Valley homeowner had with us before the first tile came off.
Decide your "non-negotiable" list before shopping for tiles
Tile shopping is exciting; nobody starts a renovation by enthusiastically picking a relief-valve route. But tiling decisions made before you have agreed on the plumbing layout cost the most to undo. Before you set foot in a showroom, write down:
- How many adults shower simultaneously on a normal morning
- Whether you want a bathtub or are happy with a walk-in shower
- Whether the existing waste outlet location is workable, or needs moving
- Storage needs — vanity drawers, recessed niches, towel space
- Whether anyone in the household will be ageing into the space
This list does more for the project than any Pinterest board.
Budget the waterproofing, not just the finishes
The cheapest line item to skip is the waterproofing layer — and it is the one you cannot redo without ripping the new floor up. A standard bathroom renovation should include:
- Two-coat polymer-modified cementitious membrane on the floor and 1800mm up the walls in wet zones
- Fibre mesh reinforcement at all corner and floor-wall junctions
- A 48-hour flood test after membrane cure, before tiling
- Photographic record of each waterproofing layer (we share this on every project)
If a contractor cannot describe their waterproofing standard to you in a sentence, that is a red flag.
Lighting before tiles, not after
Bathroom lighting almost always gets bolted on too late in the process. Make these decisions up front:
- How many lighting circuits (general, mirror task lighting, mood lighting)
- Whether you want a heated or anti-fog mirror — these need a dedicated supply
- Where the extractor fan vents to (not into a void above the false ceiling)
- If you want a separate light over the shower, an IP65 fitting is mandatory
Choose your fixtures before demolition starts
This is the single biggest source of project delay. Sinks, toilets, mixers, and shower trays have different rough-in dimensions. If the toilet you eventually choose has a different outlet position from the one we demolished around, we are back at the floor. Confirm every fixture model before week one — even if you have only paid a holding deposit at the showroom.
Plan the access and the timeline together
For condos, building management usually restricts renovation hours and lift bookings for material delivery. We coordinate this for our projects, but make sure you have the building's renovation deposit and rules in hand before signing. A two-week project that loses three working days to a lift permit is, on the day, very stressful.
Money matters — what we typically see on the spreadsheet
For a 4–6 sqm condo master bathroom in the Klang Valley, the typical breakdown looks roughly like:
- Demolition, waste, and protection: 8–12% of total
- Waterproofing and screed: 7–10%
- Tiling labour and materials: 22–30% (heavily dependent on tile choice)
- Sanitaryware and tapware supply: 18–25%
- Plumbing labour: 10–14%
- Electrical and lighting: 6–9%
- Project management, contingency, and finishing: 8–12%
Big swings happen on tile choice and sanitaryware brand. Two identical bathrooms can land RM 12,000 apart based purely on showroom decisions.
The 48-hour decision rule
If a finish or fixture is not yet ordered, we ask clients to make the decision within 48 hours once we have presented the options. Anything longer and the schedule starts to slip — once the project schedule slips a week, it tends to slip three. We will always lay out the options clearly so the call is straightforward.
If you are thinking about a renovation, book a free site visit. We will measure up, listen to your priorities, and give you a one-page summary of what would actually work in your space — before any selling or quoting starts.
Renovation Planning Budgeting