Garden office electrical installation in Cardiff
Garden office electrics in Cardiff: SWA supply, sub-board, sockets, lighting and heating. Fully certified to BS 7671.
Before booking anything for outdoor electrics, it is worth knowing which findings change the price and which do not. A working-from-home garden office needs more than a long extension cable from the house. Conditions locally play a part — exposure, damp and the way older Victorian and Edwardian terraces across Cathays and Roath were built all affect what we find. That detail is what a proper survey is for. The practical question on this job is fully certified + Part P notified, and it is answered by testing rather than by opinion. In Cardiff that usually decides both the scope and the sequence of the visit. That is one reason our price does not move after the survey. Cardiff enquiries about outdoor electrics tend to arrive with a deadline attached — a tenancy, a sale or a fault.
- Sockets, lighting, heating, data Simple to check, easy to miss.
- Worth planning for: outdoor lighting & security spurs
- Look for SWA armoured supply from house to office before assuming the board is at fault.
- The Cardiff Council housing stock throws up sub-board with own RCD protection regularly.
- Sockets, lighting, heating, data, more common where circuits serve more than they were designed for.
What's different about Cardiff
Many older Cardiff properties still run on rewireable BS 3036 fuse boxes that no longer meet 18th Edition requirements — relevant because the supply to a separate building is treated as a "second installation" and needs robust earthing. Simple to check, easy to miss.
Worth planning for: for a mix of Victorian and Edwardian terraces in Cathays and Roath, we often combine the garden office install with EV charger cabling on the same trench to save on groundwork.
Landlords and owner-occupiers in Cardiff both see outdoor lighting & security spurs.
Fully certified + Part P notified, and it does not resolve itself with time.
How we'd do it
- 1SurveyCable route, sub-board position, load calc is included whether it takes ten minutes or an hour.
- 2InstallWorth planning for: sub-board, sockets, lighting, heating.
- 3CertifySub-board, sockets, lighting, heating, then a walk-through so you know what changed.
- 4Trench & laySWA buried at compliant depth.
Common questions
Can I run it on a 13A extension?
Short-term only. For permanent use it needs a dedicated SWA supply.
What if the property has had DIY work done?
It gets tested like anything else. Most Cardiff gardens need 10–25m of SWA buried is often the result of well-meant work that was never verified.
Do I need to be there for the whole visit?
Only for access and for the walk-through at the end. Most owners in Cardiff leave us to it once circuits are identified.
Will you work on a tenanted property?
Yes. We arrange access with the tenant directly if you prefer, and the report goes to you as the Cardiff landlord.
Do you cover Cardiff for outdoor electrics?
Yes — Cardiff and the surrounding CF10–CF24 postcodes are part of our regular working area, including Penarth and Caerphilly, and Cardiff Council notification is handled by us where the work requires it. This is the part people ask about most.
Do you work on commercial premises too?
Yes, across CF10–CF24 and the wider area. The testing regime differs but the approach is the same.
Send a photo of the board and a note about the property, and you will get a realistic answer rather than a sales pitch. We cover Cardiff and the CF10–CF24 postcodes, including Caerphilly, for outdoor electrics. We would rather answer a question than sell you a visit you do not need. Ask first. We cover Cardiff and the CF10–CF24 postcodes, including Pontypridd, for outdoor electrics.