An extra socket in the kitchen, moving a light, adding a circuit for the induction hob or renewing the entire consumer unit: electrics are the part of a renovation that most DIYers have doubts about. Is it allowed? And if so, is it wise? The short answer: in the Netherlands there is no law that forbids a private individual from working on the electrical installation in their own home, as long as that installation meets the applicable standard. But the long answer has important limits: the connection and the meter are not yours, the standard is strict and technical, and in the event of fire or injury caused by unskilled work, you bear the consequences yourself. This article sets out the rules, the risks and the sensible limit. If in doubt, always check the terms and conditions of your grid operator and your insurer; these can differ per provider.
What the law and NEN 1010 require of your installation
Building regulations, since 2024 the Besluit bouwwerken leefomgeving (Bbl, the Dutch Building Decree), require an electrical installation in a home to be safe and refer for this to NEN 1010, the Dutch standard for low-voltage installations. NEN 1010 determines, among other things, how circuits are divided and protected, which wire gauge goes with which fuse, where residual current protection is mandatory, how earthing is done, how cables are laid and which additional requirements apply in wet rooms. The standard is not free and not easy to read; an accredited installer has it at their fingertips, a private individual rarely does.
The requirement focuses on the result, not on who carries out the work. So doing the work yourself is not forbidden, but as the owner you are the one who must be able to demonstrate that the installation meets the standard. For existing installations, too, building regulations refer to NEN 1010. In addition there is NTA 8025, a method published by NEN for assessing whether an older installation is still safe enough; in practice it is used for inspections of existing homes, but it is not a legal requirement.
Note the difference with gas: installing, maintaining and repairing gas appliances, including the central heating boiler, and the associated air supply and flue gas discharge may since 1 April 2023 only be done by a company certified for this. That certification requirement does not apply to work on the gas pipe itself, but that is not work for a layperson either. For electrics, no such legal certification requirement exists in homes, with the exception of the work the grid operator itself does.
Who owns what: grid operator, meter cupboard and consumer unit
In the meter cupboard, the boundaries of ownership and authority overlap. It helps to pull them apart.
- The connection, the main fuse and the meter are owned by the grid operator. They are sealed. Nobody else may work on them: not you, not your electrician. If you want a heavier connection, for example from single phase to three phases for a heat pump or charging point, you apply for it with the grid operator, who replaces the main fuse and, if necessary, the meter.
- The consumer unit, or distribution board, with the main switch, residual current devices and miniature circuit breakers, is your property. Working on it is legally permitted, but it is the riskiest part of the installation: this is where all circuits come together, the short-circuit currents are greatest and a mistake affects the entire home. Most installers strongly advise private individuals against replacing or extending the consumer unit themselves.
- The installation beyond the consumer unit, meaning cables, boxes, switches and sockets, is your property and the area where a handy private individual can do the most.
An extra rule applies to feeding power back into the grid: you must register solar panels and other generating installations with your grid operator, and a charging point or heat pump with a high power rating may be subject to notification. Check this before you connect anything.
What you can reasonably do yourself
With proper knowledge, the power to the circuit switched off and a voltage tester at hand, a handy private individual can carry out a number of tasks without objection:
- Replacing a switch or socket with one of the same type in the same place.
- Connecting a light or ceiling fitting to an existing lighting point.
- Adding a socket or lighting point to an existing circuit, with the correct wire gauge, in a covered box and with sound earthing, as long as the circuit is not overloaded as a result.
- Laying cables during a renovation, in conduit and with correctly entered boxes, with the connection to the consumer unit later made and checked by an electrician.
In all cases, be guided by three principles: always work with the power off and check that it is off, never deviate from the colour codes and wire gauges that go with the protection, and never bypass a residual current device or earthing because something "won't work otherwise". If you do not know the answer to a question, that is the signal to stop.
When to call in an electrician
Some tasks are by their nature unsuitable for a layperson, or without skilled checking create a risk that is out of proportion to the saving.
- Work in or on the consumer unit: adding a circuit, replacing residual current devices, renewing the unit, switching to three phases.
- Three-phase power and heavy consumers: induction hob, oven on its own circuit, heat pump, charging point, air conditioning.
- Bathroom and other wet rooms. NEN 1010 divides the space around the bath and shower into zones with strict rules: in the zones directly around and above the bath and shower, switches and ordinary sockets are not permitted, lighting must be splash-proof, all circuits in the bathroom must have residual current protection and metal parts must in many cases be included in supplementary equipotential bonding (earth connection); the installer assesses on the basis of the standard whether that is necessary. A mistake here is life-threatening; leave this to a tradesperson.
- Old installations with fabric-insulated wiring, lead sheathing, circuits without earthing or a unit without residual current protection. Such installations must be assessed as a whole, not repaired socket by socket.
- Solar panels, home batteries and backup power, where the grid operator sets requirements for the connection and the protection.
An accredited electrician works according to NEN 1010, tests the installation on completion and provides a report of this. In practice, "accredited" means a company that is included in an industry accreditation scheme and is periodically assessed. Ask about this when requesting quotes, and ask whether the measured values will be recorded in writing after handover.
Insurance, liability and selling
This is where the biggest misunderstanding lies. The fact that doing the work yourself is allowed does not mean that the consequences of mistakes are borne by someone else. If a fire starts because of an unskilfully installed circuit, your buildings insurer assesses whether this is a covered event and whether you acted as may be expected of a careful owner. Many policies contain an exclusion or limitation for damage caused by gross negligence or by installations that do not comply with the regulations. Ask your insurer beforehand what they think of self-installed electrics and whether an inspection report is required; the answer differs per company.
In addition, you are liable for damage your installation causes to others: injury to a guest, fire that spreads to the neighbours, damage to a tenant. The installation also plays a role when selling the home. The buyer often has a structural survey carried out, and an installation that visibly does not meet the standard costs you negotiating room or leads to an obligation to repair. An inspection report from an accredited company is then your proof that everything is in order.
Inspection: when and by whom
An inspection of the electrical installation is not legally required in a home, except in situations where a landlord, insurer or a scheme for, say, solar panels asks for it. It is sensible, though, after a renovation in which you laid electrics yourself, when buying a home older than a few decades, and after an incident such as a residual current device that keeps tripping. The inspector measures the earth electrode resistance, the insulation resistance and the operation of the residual current protection, checks the layout of the consumer unit and the zones in the bathroom, and records deviations in a report that you can show to your insurer and buyer.
If you lay cables yourself during a renovation, a good approach is: you lay the conduits and boxes, the electrician checks the work before it is plastered over, makes the connections in the consumer unit and tests the installation on completion. That way you combine the saving of doing your own work with the certainty of a professional handover. How to record that handover properly is explained in Handover of your renovation: checklist and your rights; what insurance covers during the renovation in Renovating and insurance. You can find an electrician in your region by posting your job free of charge on VerbouwPro; mention what you have already done yourself, so the quote matches it.