- BCA-registered contractor
- bizSAFE Level 4
- LEW-endorsed installations
- Sunday-Saturday, 24/7
- +65 8927 1658
- sales@bestvoltcontractors.com
Rewiring Contractor in Singapore for Full and Partial Rewiring
BestVolt Contractors plans, installs and tests new wiring for homes, businesses and industrial units across Singapore. Whether you need a few circuits replaced or a full house rewiring, you get a clear scope, an itemised quotation and LEW-endorsed work at handover.
Call or WhatsApp +65 8927 1658
Registrations and Certificates You Can Check
What Electrical Rewiring Involves
Rewiring replaces the cables that carry power from your distribution board to every light, socket and appliance. It usually goes further than swapping old cables for new ones.
A proper rewiring job also looks at how circuits are divided, whether the protection devices are adequate and whether the installation can handle the loads you plan to run.
Our electrical rewiring services in Singapore cover:
- Replacing ageing, damaged or undersized cables with insulated copper cables sized for each circuit
- Reorganising circuits so heavy appliances are not sharing an overloaded line
- Upgrading protection with RCCB and MCB devices at the DB box
- Adding or relocating power points, lighting points and switches
- Testing, labelling and documenting the finished installation
Full House Rewiring or Partial Rewiring?
The right option depends on the age and condition of your existing wiring, what you plan to run on it and whether renovation works are already happening.
Full House Rewiring
All wiring in the property is replaced, usually together with the DB box. This suits properties where the original wiring is old, damaged or poorly documented, and units being renovated with the walls and ceilings already open.
Partial Rewiring
Only selected circuits or areas are rewired, such as the kitchen, bathrooms or bedrooms, while existing wiring that is still sound stays in place. This suits properties with a specific problem area, or owners adding new appliances to part of the home or premises.
| Comparison | Full rewiring | Partial rewiring |
|---|---|---|
| What is replaced | All circuits and cabling | Selected circuits or areas |
| DB box | Usually replaced or upgraded | Upgraded if protection is outdated |
| Best suited to | Older installations, full renovations, bare units | Isolated faults, extra appliances, room-by-room upgrades |
| Disruption | Higher; usually planned around renovation | Lower; limited to the affected areas |
Not sure which one you need? A site survey checks the existing wiring and loading before any scope is fixed.
What a Rewiring Scope Can Include
Every scope is confirmed after the site survey, but most rewiring jobs draw from the items below.
Wiring and Circuits
- New cabling for lighting, power and dedicated appliance circuits
- Concealed wiring inside walls and ceilings, or surface trunking and aluminium rail where hacking is not practical
- Additional power points, including USB-C socket plates
- Separate circuits for air-conditioners, water heaters, ovens and induction hobs
Distribution Board and Protection
- A new or upgraded DB box with RCCB and MCB protection
- A DB schedule listing what each circuit serves
- Clear labelling on every breaker
See our DB box upgrade and replacement service for board-only work.
Supply Capacity
If your planned appliances need more power than the current supply allows, the rewiring can be paired with an electrical loading upgrade, applied for through an LEW with SP Group.
LEW Endorsement and EMA Compliance
In Singapore, electrical installation work falls under Energy Market Authority (EMA) rules. A Licensed Electrical Worker (LEW) is responsible for supervising, testing and endorsing the work before it is put into use.
As your electrical rewiring contractor, we coordinate this for you.
Learn more about our electrical testing, inspection and compliance support.
- LEW coordination. The LEW is involved from planning through to final endorsement.
- Work to SS 638. Installations follow SS 638, the Singapore Standard for electrical installations (formerly CP 5).
- Testing before power-on. Insulation resistance, earth continuity and RCCB trip tests are carried out before handover.
- Submissions. SP testing, CS3 submissions and JTC electrical diagram submissions are handled where the job requires them.
Our 6-Step Rewiring Process
From the first enquiry to LEW endorsement, every rewiring job follows the same sequence.
- Enquiry and Initial DetailsTell us the property type, approximate size, what is prompting the work and your preferred timing. Photos of the DB box and any problem areas help us prepare.
- Site Survey and Load CheckWe inspect the existing wiring, DB box and protection devices, check electrical loading against your planned appliances and note access constraints.
- Itemised Quotation and Scope ConfirmationYou receive a quotation listing circuits, points, cabling, protection devices and labour. We confirm full or partial rewiring, concealed or trunking methods and point locations before work is scheduled.
- Approvals and Site PreparationWe plan around HDB renovation permits for hacking, MCST rules and permitted hours for condominiums, or operating hours for businesses. Work areas are protected and power arrangements are agreed in advance.
- Rewiring InstallationOld wiring is removed or isolated, new cables are laid, and the DB box, sockets, switches and lighting points are installed according to the agreed scope.
- Testing, LEW Endorsement and HandoverCircuits are tested, labels and the DB schedule are completed, and the LEW endorses the installation. You receive the test records and a walkthrough of what was installed.
Rewiring for Every Type of Property
The same principles apply everywhere, but approvals, access and loads differ by property. Choose your property type for details.
Homes: HDB, Condo and Landed
From 3-, 4- and 5-room HDB flats to condominiums and multi-storey landed houses. Residential jobs are planned around HDB permits, MCST rules and family routines.
Offices, Shops and F&B
Works are scheduled to limit disruption to trading, with circuits and DB capacity planned for future expansion.
Factories and Warehouses
Machinery circuits, MDB and sub-DB upgrades and 3-phase supply, with works planned around shutdowns and documented for LEW endorsement.
Pricing and Quotations
Rewiring costs depend on property size, full or partial scope, wiring method, the number of circuits and points, and whether a loading upgrade is needed.
For indicative ranges and package options by property type, see our rewiring prices page. For a figure specific to your property, we will send an itemised quotation after the site survey.
- Property size and number of rooms
- Full or partial rewiring scope
- Concealed wiring or surface trunking
- Number of circuits, points and switches
- Whether a DB box or loading upgrade is included
What your quotation includes
- Circuits, points and cabling listed line by line
- Protection devices at the DB box
- Labour and the agreed wiring method
- A work schedule for your property
Working with a Rewiring Specialist
Rewiring is our core work, not an add-on to general electrical works. Our projects include full and partial rewiring of 3-, 4- and 5-room HDB resale flats, new wiring for bare units, concealed wiring, USB-C socket plates and aluminium rail installations, and SP testing clearance and JTC electrical diagram submissions for business premises.
What stays the same on every job
- An itemised quotation before any work starts
- A labelled DB schedule so future electricians know what each breaker controls
- Test records handed over with the completed installation
- A Singapore-based team you can reach by phone or WhatsApp after the job
Rewiring Questions We Often Get
How long does a rewiring job take?
It depends on the property size, full or partial scope, wiring method and any approvals needed. A partial rewire of a few circuits is much shorter than a full rewire with concealed wiring. We give you a work schedule with the quotation once the site survey is done.
Can I stay in the property while it is being rewired?
For partial rewiring, usually yes, with power switched off only for the affected circuits at planned times. A full rewire involves longer power interruptions and more dust, so many owners schedule it during renovation or before moving in. We will advise what is practical for your scope.
Should rewiring be done before or after renovation?
Before carpentry, false ceilings and finishes go in. Wiring runs behind walls and ceilings, so doing it first avoids reopening finished surfaces. If you are working with an interior designer, we can share the point layout and schedule so both teams stay in sequence.
Do I need to replace the DB box when rewiring?
For a full rewire, the DB box is usually replaced or upgraded so the new circuits have proper RCCB and MCB protection. For a partial rewire, it depends on the condition and capacity of your existing board, which we check during the site survey.
What documents do I receive after rewiring?
You receive the test records for the new installation, an updated DB schedule and labelled breakers. Where the job requires it, the LEW endorsement and any SP testing or CS3 submission are completed as part of the handover.
Recent Rewiring Projects
Rewiring projects across homes and business premises in Singapore.
Full House Rewiring - Jade Residences - Lew Lian Vale
1 Lew Lian Vale, Jade Residences, Singapore- Full rewiring across 3 storeys
- 2x DB box upgrade with RCCB
4-Room HDB Resale Full Rewiring - Pasir Ris
244 Pasir Ris Street 21, HDB- HDB hacking permit applied
- Full concealed wiring
Condo Rewiring & DB Upgrade - Affinity at Serangoon
40 Affinity Serangoon North, Condo- MCST approval managed
- Full concealed wiring
Industrial Electrical Wiring - JTC Tampines Street 93
JTC 9010 Tampines Street 93, Singapore 528844- MDB upgrade
- 3-phase sub-DB
HDB Rewiring - Punggol Drive 635A
Blk 635A Punggol Drive, HDB- Full concealed rewiring
- DB with RCCB
Orchid Park Condo - Full Rewiring & Power Points
81 Yishun Street 81, Orchid Park Condo- Full unit rewiring
- DB upgrade with 2nd RCCB
Factory Wiring - TENET 71 Tampines North
TENET 71 Tampines North Street 62, Industrial- DB upgrade
- 3-phase power
Complete Electrical Rewiring - Jalan Mata Ayer
24 Jalan Mata Ayer, Sembawang- Full house rewiring, 2 storeys
- Main DB + sub-DB
What Our Clients Say About Our Work
Real reviews from homeowners and businesses, pulled from our Google Business Profile.
Plan Your Rewiring with BestVolt
Tell us about your property and what you would like to change. We will arrange a site survey, confirm whether full or partial rewiring makes sense and send you an itemised quotation.
- BESTVOLT CONTRACTORS PTE. LTD.
- 406 Pandan Gardens, #14-38, Singapore 600406
- Phone / WhatsApp: +65 8927 1658
- Email: sales@bestvoltcontractors.com