Shop & Office Plumbing Fit-Out: Water Points & Sewer
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Shop & Office Plumbing Fit-Out
New Water Points, Sanitary & Sewer Connection (2026)

Need a toilet, pantry or wash points in a new shop or office? Start with where the supply and drain really are.

New drain pipe laid to a fall and supply pipes on the wall during a shoplot plumbing fit-out

A plumbing fit-out in a shop or office is decided by where the existing supply and the drain or stack are, not by where you would like the sink. Survey both before you sign, agree with the landlord who owns which pipe, keep new drains short with a proper fall and access points, pressure-check new supply runs before walls close, and flood-test wet floors before tiling. Moving a toilet drain adds RM2,000 – RM5,000 on ClickBina's guides. A site visit is RM150, waived if you go ahead.

What a commercial plumbing fit-out covers

Most new tenants need at least one of these: a staff toilet, a pantry sink, wash points for a salon or clinic, a hand-wash basin at a food counter, or a full commercial kitchen. The unit may be a bare shell with one capped pipe, or a previous tenant's layout that is in the wrong place for you.

The expensive part is rarely the tap. It is getting clean water to the new point and dirty water away from it with enough fall, without cutting through a slab you do not own.

Survey before you sign

  • Where does the water supply enter, and is there a meter for this unit alone?
  • Where is the nearest soil or waste stack, floor trap or inspection chamber?
  • On a ground floor, is there a back lane drain or manhole the new drain can reach?
  • On an upper floor, will a new drain have to run through the ceiling of the unit below?
  • What is the water pressure like at the point you need it?
  • Does the lease say who fixes blocked drains and leaks from your pipes?

ClickBina's drainage and sewer pipe guide notes that a drain camera inspection shows the condition of old pipes before anything is hacked, which is worth doing on an older shoplot.

Who owns which pipe

Responsibility splits three ways, and the lease can move it again, so get it in writing before the works start.

Part of the systemWho usually owns itSource
Water meter and the supply up to itThe water operator (Air Selangor in the Klang Valley); SPAN is the national commissionWater meter and sub-meter guide
Private sewer pipes inside the propertyThe owner or occupier; Indah Water says customers may engage private contractors to clear a private blockageCommercial plumbing maintenance guide
Public sewer beyond your connectionIndah Water Konsortium (IWK) operates the public sewerage systemGrease trap guide
Common stacks and pumps in a strata blockThe JMB or MC; pipes inside your unit are usually yoursCommercial plumbing maintenance guide

ClickBina's plumbing services guide makes the practical point: work on the incoming supply and metered connection, and anything that ties into the public sewer or the water authority's side, falls under licensed trades and utility rules. Confirm current requirements with the operator, IWK or the council for your premises.

New water points and sub-meters

  • Take new branches from a point with an isolation valve, so one area can be shut off without closing the whole unit.
  • Keep hot and cold runs short, and insulate hot runs to a pantry or salon wash point.
  • Check pressure at the furthest point before choosing mixers and sensor taps.
  • Where one supply feeds several tenancies, a private sub-meter can apportion use.

ClickBina's water meter and sub-meter guide covers commercial subdivision: a shoplot or floor split into tenancies off one supply, where each tenant should carry its own consumption. The operator's meter itself is sealed equipment.

Drainage: fall, vents, traps and access

The drainage guide lists what makes any drain work: a steady fall towards the sewer, vents so traps are not siphoned dry, a water-holding trap at every fixture, and rodding eyes and inspection chambers at bends and junctions. In a renovation it asks for the material and fittings named in the quote, the fall checked before the floor is screeded, a water test of new drains before tiling, proper adaptors between old and new pipes, and management approval before touching a shared stack.

Every metre of new drain needs fall, which eats floor or ceiling height. A sink far from the stack may need a raised floor or a pump, so ask early.

Toilets and sanitary fittings for commercial use

A staff or customer toilet takes far more use than a home bathroom. Choose robust fittings, a floor trap in the right place and finishes that can be cleaned daily. ClickBina's office and commercial toilet guide covers cubicles, sensor taps, urinals and dryers. The toilet is the hardest fixture to move because it is tied to its soil pipe in the slab; ClickBina's guide to moving a toilet, sink or shower prices relocating the drain separately.

F&B, salons and clinics: the extra wet points

  • F&B: local councils require food outlets to install and maintain an adequate grease interceptor as a condition of the business licence, according to ClickBina's grease trap guide. Build it in at fit-out, sited for servicing.
  • Salons and barbers: a wash point at each basin station, with hair traps and enough fall.
  • Clinics: hand-wash basins in treatment rooms and a cleanable sluice or utility sink where needed.
  • All wet trades: floor falls to a floor trap and a waterproofed floor wherever water is used.

ClickBina's grease trap guide adds that retrofitting a trap into a finished kitchen almost always costs more and works worse than building it in.

First fix and second fix

StagePlumbing taskCheck before moving on
LayoutMark every fixture position and heightPositions agree with the fittings chosen
Rough-in (first fix)Lay supply and waste pipes, set outletsPressure-check the new supply runs
Screed and fallsForm the floor falls to the floor trapWater runs to the trap
WaterproofingMembrane over the wet floor and up the wallsFlood test before tiling
Second fixFit sanitaryware, taps, heater, appliancesEvery joint run and checked for leaks

This sequence follows ClickBina's guide to moving bathroom fixtures, which makes the key point: a leaking joint found at rough-in costs minutes; found after tiling, it costs a wall.

What the main items usually cost

ItemIndicative priceSource guide
Relocating a toilet drain (core-drilling)RM2,000 – RM5,000 extraMoving toilet, sink or shower guide
New WC, supply and installRM350 – RM1,200Moving toilet, sink or shower guide
Bathroom waterproofing, hack and redoRM4,500 – RM9,000 per bathroomMoving toilet, sink or shower guide
Under-sink / stainless-steel grease trap, supply and installRM500 – RM2,000Grease trap guide
CCTV drain camera inspectionRM200 – RM600Drainage and sewer pipe guide

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These are ClickBina's published indicative Klang Valley ranges for 2026. New supply runs, drainage and fittings for your unit are priced after a site look, because they depend on what is already there.

How ClickBina can help, and what to send for a quote

ClickBina handles commercial renovation and fit-out works and coordinates the trades, including the plumbing, waterproofing and tiling around each new wet point. WhatsApp us your job details for a quote:

  • Premises type, floor and size, and whether it is a bare unit.
  • What you need: toilet, pantry, wash points, kitchen, grease trap.
  • Where the existing supply and drain are, if you know.
  • Your lease start and target opening date.

We reply within the hour, the price we agree is a flat price with no hidden charges, and a site visit is RM150, waived if you go ahead.

Sources & methodology

  • ClickBina water meter and sub-meter guide — SPAN, Air Selangor and the sealed meter; commercial subdivision.
  • ClickBina commercial plumbing maintenance guide — Indah Water on private blockages; strata stacks.
  • ClickBina grease trap guide — council grease interceptor requirement, IWK, installation at fit-out, trap price.
  • ClickBina drainage and sewer pipe guide — fall, vents, traps, access, renovation checks, drain camera price.
  • ClickBina guide to moving a toilet, sink or shower — first and second fix, relocation, WC and waterproofing prices.

Methodology: every RM figure is quoted unchanged from the ClickBina guides named above (indicative 2026, Klang Valley). Authority roles are summarised from those pages; confirm current requirements for your premises with the operator, IWK or the council.

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Common Questions

Can I add a toilet to a shop or office unit?
Usually, if a drain or stack can be reached with enough fall. Survey the supply and drainage before you sign.
Who fixes a blocked drain in a rented shop?
Private pipes are the owner's or occupier's; the lease decides between landlord and tenant. IWK operates the public sewer.
Does a cafe need a grease trap?
ClickBina's grease trap guide says local councils require food outlets to install and maintain one as a licence condition.
How much does it cost to move a toilet drain?
ClickBina's guides put relocating a toilet drain at RM2,000 to RM5,000 extra.
Can tenants have separate water meters?
The operator's meter is sealed equipment. A private sub-meter can apportion use between tenancies.
Why test pipes before tiling?
A leaking joint found at rough-in costs minutes; found after tiling, it costs a wall.
Can I touch the building's shared stack?
Only with management approval in a strata building, using proper adaptors between old and new pipe.

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