DIY Electrical Work UK: What Is Legal at Home?

Does the Same DIY Electrical Law Apply Across the UK?

No. The UK shares the BS 7671 electrical installation standard, but building-control legislation and procedures are not identical across England, Wales, Scotland and Northern Ireland.

What Does Part P Require in England?

Part P is the electrical-safety part of the Building Regulations for dwellings in England. Its core requirement is that reasonable provision is made in the design and installation of electrical installations to protect people from fire and injury.

Its scope is wider than the rooms inside a house or flat. It can also cover electrical installations associated with the dwelling, including relevant garden electrics, outbuildings and some common or shared areas where the supply arrangement falls within Part P.

The important distinction for DIY work is between:

• work that falls within Part P but is non-notifiable; and
• work that must follow a Building Regulations notification or approved certification route.

This is why asking only “Can I legally change this myself?” can be misleading. The more useful questions are: what work is actually being done, does it create or alter a circuit, where is it located, and how will the completed work be inspected and tested?

What Electrical Work Is Notifiable Under Part P in England?

Current Approved Document P identifies three main categories of notifiable electrical installation work in England:

1. installation of a new circuit;
2. replacement of a consumer unit;
3. an addition or alteration to an existing circuit in a defined special location.

For notification purposes, the definition of a special location includes specified areas around baths and showers and rooms containing a swimming pool or sauna heater. It does not mean that every room containing water automatically has the same notification status.

Which Home Electrical Jobs Are Notifiable in England?

The table below separates notification status from DIY suitability. A job being non-notifiable does not automatically make it a sensible DIY project.

Are Bathrooms, Kitchens and Outdoor Electrics Automatically Notifiable?

No. The notification rules should not be reduced to a list of room names.

Bathrooms and showers

Certain additions and alterations within the defined space around a bath or shower are notifiable. Electrical work elsewhere in the room may have a different notification status, although bathroom electrical work still has additional technical considerations because of the environment.

Kitchens

A kitchen is not, by itself, a special location under the current England notification definition. For example, replacing an accessory or altering an existing circuit in a kitchen is not automatically notifiable simply because the work is in a kitchen.

That does not make kitchen electrical work automatically suitable for DIY. Ovens, hobs and other fixed equipment can involve higher loads, dedicated circuits and specific connection arrangements.

Gardens, garages and outbuildings

Part P can extend to fixed electrical installations in gardens and outbuildings associated with a dwelling. However, notification depends on the work performed. Connecting equipment to an existing suitable supply is different from installing a new circuit from the consumer unit.

If the project requires planned new circuits, sockets, fixed supplies or alterations, it is more useful to have the existing electrical installation assessed before deciding how the work should be carried out.

How Is Notifiable DIY Electrical Work Approved?

A homeowner is not given a general exemption from Building Regulations simply because they are carrying out work in their own property.

Approved Document P sets out three routes for certifying notifiable electrical installation work:

1. self-certification by an installer registered with an appropriate Competent Person Scheme;
2. certification through a registered third-party certifier;
3. certification through the relevant building control body.

For third-party certification, the certifier should be appointed before the electrical work begins. This is an important reason not to finish notifiable DIY work first and then assume that any electrician can simply “sign it off” afterwards.

The separate article Can I Sign Off My Own Electrical Work at Home? deals specifically with certification, responsibility and the difference between doing electrical work and being able to provide the required evidence afterwards.

Does BS 7671 Change the Legal Position in 2026?

BS 7671 and the Building Regulations are related but they are not the same thing. Part P is the legal Building Regulations requirement in England; BS 7671 is the national technical standard used for electrical installations and is an important means of demonstrating appropriate electrical design, installation, inspection and testing.

As of August 2026, BS 7671:2018+A4:2026 has been published. The IET states that the previous Amendment 2:2022 with Amendment 3:2024 remains valid during the transition until 15 October 2026, after which Amendment 4 becomes the applicable current edition.

When Should a Homeowner Stop and Use an Electrician?

Notification status is only one part of the decision. Electrical work can be non-notifiable and still require skills or testing that the homeowner does not have.

Professional help is the more appropriate option where:

• you cannot identify and isolate the correct circuit safely;
• the existing conductors or connections are damaged, overheated or unclear;
• the circuit needs electrical testing before an alteration can be judged suitable;
• a new circuit is required;
• the consumer unit needs alteration or replacement;
• work falls within a special location;
• the project changes circuit loading or protective arrangements;
• there is repeated RCD or circuit-breaker tripping;
• there is burning, scorching, crackling, sparking or unusual heat;
• you are unsure what certification or Building Regulations route applies.

A planned socket alteration is also different from simply replacing a damaged accessory. The dedicated guide Can I Move a Plug Socket Myself in the UK? looks at that specific boundary without expanding it here.

Likewise, replacing substantial parts of a property's fixed wiring is a different level of work from changing an accessory. The legal and technical issues around that decision are covered separately in Can I Legally Rewire My Own House in the UK?.