I’ve been carrying out electrics for outbuildings, home offices and garden rooms for a while now, and it has become a really common request for domestic properties around Banbury, Brackley and the surrounding areas. With more people working from home, a properly wired external office or garden room can make a big difference to how usable the space is all year round.
I’ve also set up an external office at my own property, so I understand first-hand what needs thinking about. It’s not just a case of getting a socket and light outside. You need to consider the cable route, correct circuit protection, voltage drop, lighting, internet or data requirements, heating loads, and how the installation will be used day to day.
At L J Mullan Electrical, I carry out outbuilding electrics, office electrics and garden room electrics for homeowners, landlords, letting agents and businesses. I’m NAPIT registered, Part P compliant, and have over 180 five-star Google reviews.
Back to topA lot of customers want an external office because they work from home but need separation from the house. Others want a garden room for family use, a home gym, storage, or a more usable outbuilding.
When I quote these jobs, I look at how the space will actually be used. For example, a small garden office with a few sockets, LED downlights and a heater may need a different approach to a larger outbuilding with multiple circuits. I also like to suggest good-quality garden lighting where it suits the property, because the right external lighting can finish the job properly and make the route to the building safer at night.
I use good-quality products and prefer to install materials I know and trust, rather than fitting the cheapest option. That helps reduce future issues and gives customers a better long-term installation.
Back to topThe process starts with a free quotation. You can email, message, WhatsApp or call me, and I’ll arrange a time to attend the property.
During the visit, I’ll look at the existing consumer unit or fuse board, the likely cable route, the distance to the outbuilding, the type of building, and what you want to use it for. I’ll explain the options clearly so you have a good understanding of the work before anything is booked in.
Once the route and requirements are agreed, I’ll provide a quote. There are no hidden costs added to bills unless the work required changes, and if that happens, I’ll always discuss it with you first.
Most outbuilding, office and garden room electrical installations take around 1–3 days, depending on the distance, cable route, number of accessories and whether a small consumer unit is needed in the outbuilding.
Back to topOne of the biggest mistakes I see with outbuilding electrics is incorrect circuit protection. The installation needs to be designed properly, not just connected to any spare way in a fuse board.
Cable choice is another big one. When cables are run outside, they need to be suitable for external use or have the correct mechanical protection. Using the wrong cable can lead to damage, water ingress or future failure.
Voltage drop is also important, especially when running a cable a longer distance to an external office or garden room. If this is not allowed for, the installation may not perform as it should. This is why I check the load, distance and installation method before recommending a cable size.
A good electrical installation should be safe, practical and suitable for the way the building will actually be used.
Back to topFor consumer units and circuit protection, I commonly use Hager or Fusebox. For electrical accessories, I use reputable brands such as Hager, and for downlights I often use Aurora.
I also use good-quality cable from reputable manufacturers to reduce the risk of breakdowns or issues later on. With external installations, the quality of the cable and accessories matters because the installation is exposed to more demanding conditions than a normal internal circuit.
I’m a local electrician covering Banbury, Brackley and the surrounding areas. I’ve built my business around communication, respecting people’s homes and carrying out work to a high standard.
A lot of my Google reviews mention communication, tidiness and reliability. That is important with planned work like garden room electrics, because customers want to know what is happening, when it is happening and what the finished job will involve.
All workmanship is covered by a 12-month guarantee, and the job will include labour and materials unless you specifically want certain accessories, such as decorative lighting.
Back to topOutbuilding, office and garden room electrics are quoted after a free survey. This is because every property is different. The price depends on the cable route, distance from the house, existing consumer unit, number of sockets, lighting points, circuit requirements and whether additional protection or a small consumer unit is needed.
I’ll talk you through the options before providing the quote, so you know exactly what is included.
Back to topHow much do outbuilding electrics cost?
I quote outbuilding and garden room electrics after a free survey. The cost depends on the cable route, distance, circuit requirements, accessories and whether extra protection or a consumer unit is needed.
How long does the work usually take?
Most outbuilding, office and garden room electrical installations take around 1–3 days. A simple office supply may be quicker, while longer cable routes or more involved installations can take longer.
Do I need a separate consumer unit in my garden room?
Sometimes, but not always. I’ll look at the size of the building, how it will be used and the existing electrical installation before recommending the best option.
Can you install sockets, lights and outdoor lighting?
Yes. I can install sockets, office lighting, garden room lighting, downlights and suitable external lighting around the building where required.
Are you registered for this type of work?
Yes. L J Mullan Electrical is NAPIT registered and Part P compliant, so the work can be carried out correctly and notified where required.
What are the main risks with poor outbuilding electrics?
Common problems include incorrect circuit protection, unsuitable cable, poor external installation methods and voltage drop not being allowed for. These can lead to safety issues or an installation that does not perform properly.
Do you offer a guarantee?
Yes. I provide a 12-month workmanship guarantee on the work carried out.
If you’re planning an outbuilding, home office or garden room and want the electrics done properly, contact L J Mullan Electrical today for a free quote. I’ll visit the property, talk through the best options and give honest advice with no obligation.
Contact Today for a Free Quote
Back to top