You have signed the lease, the interior designer has finalised the layout, and the contractor is ready to start hacking. But here is a question nobody thought to raise during the planning meetings: where is the electricity coming from while the renovation is happening? In a commercial building in Singapore, the existing power supply to your unit is often disconnected or reassigned the moment the previous tenant moves out. That means your contractor shows up on day one with power tools, temporary lighting, and no place to plug them in. It sounds almost comical, but this scenario plays out in commercial fitouts across the island more often than anyone wants to admit.
The Gap Between Signing the Lease and Having Power
Most business owners assume that because the building has electricity, their unit has electricity. That is not how it works in a commercial tenancy. When the previous tenant surrenders the unit, the electrical account tied to that space typically gets terminated. The distribution board (DB) in the unit may still be there physically, but the supply feeding it may be switched off at the riser or the building’s main switchboard.
What makes this worse is timing. You are paying rent from the day the lease starts, your contractor is on the clock, and every day of delay costs money. If nobody arranged for temporary electrical supply before the renovation kicked off, the contractor either cannot start or has to run extension cords from a neighbouring unit – which is exactly as unprofessional and potentially unsafe as it sounds.
The responsibility for arranging temporary power sits in an awkward space between the tenant, the contractor, and building management. And because it is nobody’s primary concern, it often becomes nobody’s concern at all until someone is standing in an empty unit with a drill and no working power point.
Who Is Actually Responsible?
This is where things get murky. The short answer is that it depends on your lease terms and the building’s house rules – but in practice, the responsibility almost always falls on the tenant to initiate.
Building management controls the main electrical infrastructure. They decide how temporary supply gets connected, what the process looks like, and what documentation they need before flipping the switch. Your contractor needs to know the building’s specific procedures because every commercial building in Singapore handles this slightly differently. Some buildings have a standard application form. Others require you to go through the managing agent. A handful of older buildings still operate on an informal arrangement where the building technician sorts it out on the day, though that is becoming rarer as management corporations tighten their processes.
Your main contractor or interior design firm should ideally be the one coordinating this. They are the ones who know when power is needed on site and what load is required for construction equipment. In Singapore, commercial electrical contractors like Mr Electrician SG often handle both the temporary supply coordination and the permanent installation as a single scope, which avoids the coordination gap entirely. But honestly, this is one of those things that gets overlooked until it is too late. Contractors assume the tenant has handled it. Tenants assume the contractor has handled it. Building management is not going to chase either of you. So someone needs to own it early – preferably at the same meeting where you discuss the renovation timeline and access arrangements.
Temporary Power Is Not the Same as Your Permanent Supply
A common misunderstanding: temporary electrical supply during renovation and the permanent electrical installation for your finished space are two completely separate things. The temporary supply is just enough power to run construction tools, temporary lighting, and maybe a basic ventilation fan during the fitout period. It is not designed to support your full office or retail electrical load.
This matters because some tenants assume that once the renovation is done, the same power arrangement continues. It does not. Your permanent electrical installation needs its own setup – a new DB, proper circuit design, metering, and the relevant sign-offs before you can operate commercially. In Singapore, commercial electrical installations go through a certification process that involves a Licensed Electrical Worker (LEW), and that process needs to start well before your renovation ends, not after.
The temporary supply also has limitations that affect your renovation schedule. If your fitout involves heavy equipment – industrial extraction fans, large compressors for air conditioning installation, or commercial kitchen equipment being tested – the temporary supply may not be sufficient. This is something your contractor should flag upfront, but again, it requires someone to actually think about it during planning.
What Happens When Nobody Plans for It
I have seen fitout projects lose three to five working days because temporary power was not arranged. In a commercial renovation where the typical timeline is already tight, that kind of delay cascades. Your plastering contractor misses their window. The electrician who was supposed to come in the second week now has a scheduling conflict. The furniture delivery that was timed to arrive the day after handover now arrives before the space is ready.
The financial impact is real. You are paying rent on a space you cannot use. Your contractor may charge for wasted site visits. If you have a fixed opening date – a lease obligation or a business commitment – every lost day compresses the remaining schedule and increases the chance of cutting corners to catch up.
There is also a safety dimension. When temporary power is not properly arranged, people improvise. Extension leads running from common areas, overloaded temporary connections, cables trailing across wet floors during the hacking phase. None of this is acceptable from a safety standpoint, and if building management catches it, you are looking at a stop-work order that makes the delay even worse.
For commercial projects in Singapore, having one electrical contractor handle both the temporary supply coordination and the permanent installation planning means fewer things falling through the cracks between separate parties.
Coordinating with Building Management
Every commercial building in Singapore has its own set of renovation guidelines. These typically cover everything from permitted working hours to noise restrictions to – yes – how temporary electrical supply is arranged. The renovation guidelines are usually available from the managing agent or the management corporation, and your contractor should request them before the first day of work.
For temporary power, the building will usually want to know how much load your renovation requires, how long you need the supply, and who is responsible for the connection. Some buildings provide a temporary power point from their common supply and charge you for the usage. Others require you to arrange your own temporary connection through the building’s electrical infrastructure, which involves more coordination.
The key thing is to start this conversation early. Do not wait until the renovation permit is approved. Raise the question about temporary power when you first submit your renovation application to the building. That gives everyone enough lead time to arrange whatever is needed, and it flags the issue before it becomes urgent.
One thing that catches people off guard: some buildings require that even the temporary electrical connection during renovation is handled or supervised by a qualified electrical professional. This is not unreasonable – the building management has a duty of care for the common electrical infrastructure, and they do not want an unqualified person tapping into their switchboard. Factor this into your planning.
Planning Your Permanent Electrical Installation Alongside the Fitout
Here is where the temporary power question connects to the bigger picture. While your renovation is happening under temporary supply, your permanent electrical installation should be getting designed and planned in parallel. The worst outcome is finishing your renovation only to discover that the permanent electrical work – the DB installation, the circuit layout, the metering setup, the compliance certification – adds another few weeks before you can open.
In Singapore, commercial electrical installations need to meet specific regulatory requirements administered by the Energy Market Authority (EMA). The specifics vary depending on your space type, your electrical load, and the nature of your business, but the general principle is consistent: a qualified LEW needs to design, install, and certify the electrical system before you can operate. This is not optional, and it is not something you can arrange the week before opening.
Smart project managers overlap the permanent electrical design with the renovation timeline. While the hacking and structural work is happening, the electrical layout is being finalised. By the time the renovation reaches the point where wiring needs to go in, everything is ready. The temporary supply keeps the construction running while the permanent installation takes shape behind the scenes.
If you want to avoid the situation where your renovation finishes but your electrical certification does not, the simplest approach is to work with an EMA LEW from mrelectrician.sg from the start of the project. That way, temporary supply, permanent installation, and compliance certification are all being managed by someone who sees the full picture rather than being handed off between different parties at different stages.
Getting Ahead of the Problem
The theme running through all of this is straightforward: temporary electrical supply during a commercial renovation is a logistics question that needs to be answered before the renovation starts, not after. It is not glamorous. Nobody gets excited about it during the design phase. But the projects that go smoothly are almost always the ones where someone asked the boring questions early.
Talk to your building management about temporary power before the contractor starts. Make sure your renovation timeline accounts for both temporary supply and permanent installation. And make sure someone on your project team is responsible for the electrical coordination from day one. The cost of getting ahead of this is essentially zero. The cost of not getting ahead of it is measured in lost days, wasted money, and a compressed schedule that puts pressure on everything else.
