Landscape Lighting near you

An extra-low voltage scheme runs a transformer from a protected supply and distributes 12 volts to the fittings. The advantages in a garden are real: a cut cable at 12 volts is a different event from a cut cable at 230 volts, the fittings are small, and adding a light next season is a matter of connecting into the run rather than commissioning a new circuit. The trade-off is voltage drop. Long cable runs and many fittings on one transformer leave the far end dim, and the fix is heavier cable, a bigger transformer or a second one nearer the load - all of which should be designed at the start, not discovered afterwards.

A mains scheme gives you output and long runs without the voltage drop arithmetic, and it is the right answer for a large plot, for bright task lighting or for anything that also has to power a socket, a pump or a gate. It is also a fixed installation in a wet environment, needing proper containment, correctly rated fittings, an isolation arrangement you can actually get to, and residual current protection on the circuit.

Most British gardens end up with a hybrid: a mains supply out to a dry, accessible enclosure, and extra-low voltage distribution from there into the planting. That is usually the cheapest thing to extend, because the expensive part - getting a protected supply out of the house and into the garden - has already been done once.

This is one of the few places in British home wiring where the voltage decides the consent route rather than just the method. The Scottish Government's building standards technical handbook for domestic buildings lists the work in schedule 3 to the Building (Scotland) Regulations 2004 that does not need a building warrant. Type 22 on that list covers an electrical installation, including circuits for telecommunication, alarm purposes or the transmission of sound, vision or data, operating at extra-low voltage - not exceeding 50 volts alternating current or 120 volts direct current, measured between conductors or to earth - and not connected directly or indirectly to a supply above those voltages. A 12-volt garden lighting circuit fed from an isolated transformer sits inside that exemption; a 230-volt garden circuit does not.

In England the test is different and comes from regulation 12(6A) of the Building Regulations 2010, as explained by Approved Document P: the installation of a new circuit is notifiable. Running a new mains circuit from the consumer unit out to the garden is a new circuit. Extending an existing outdoor circuit outside a special location is not, and neither is a low-voltage scheme plugged into an existing protected supply. Whichever country you are in, the question to put to the electrician is simply which category the design falls into, and to get the answer before the trench is dug.

The classic extra-low voltage failure is not a failure at all. Lights nearest the transformer are bright, the far ones are dull and slightly orange, and nothing is broken - the voltage has simply dropped along the run. Adding one more fitting to a run that was already marginal is what usually tips it over. The answers are heavier cable, splitting the load across more than one transformer, or feeding a long run from its middle rather than from one end.

The classic mains failure is water. Recessed ground fittings sit in the one place water collects, uplighters point their lens at the sky, and spike lights get buried by mulch until the cable entry is underground. Drainage below a recessed fitting, a gland that faces down, and an annual walk round clearing debris away from the bodies of fittings prevent most of it.

The third problem is not electrical. Gardens grow. A scheme aimed beautifully at a young hedge is aimed at the inside of a dense hedge three years later, and a tree uplighter that lit a trunk now lights the underside of a canopy that has spread over the neighbour's fence. Landscape lighting is one of the few installations that genuinely needs re-aiming as a maintenance task, and it is worth agreeing at the start whether the installer will come back to do it.

Use is lopsided. In midsummer a British garden is barely dark before most people go to bed, and the lighting does very little; from October to March it is dark by late afternoon and the scheme is doing the whole job, in the wettest and coldest part of the year. That is the opposite of the pattern most people imagine when they commission it, and it argues for specifying for winter conditions and for the views from indoors rather than for a summer evening on the terrace.

It also shapes the maintenance calendar. Late summer is the moment to check and re-aim, before the fittings matter and while the ground is workable. Autumn leaf fall is what buries recessed markers and blocks drainage. Frost is what lifts spike lights out of true and cracks lenses that already had water in them. A single walk round with a torch in September deals with most of what would otherwise become a January call-out.

The fittings are rarely the biggest number. Getting a protected supply from the house to the garden is, particularly where it crosses a patio, a drive or a mature border, and that cost barely changes whether you then install six lights or sixteen. After that the variables are the distance and difficulty of the cable routes, whether the scheme is mains or extra-low voltage, how many separately switched or dimmed zones you want, the depth of control you expect, and whether commissioning at night and a return visit to re-aim are included. A phased scheme with the supply, ducting and capacity installed once is usually cheaper over five years than three separate small jobs.

LokalMatch exists to make the introduction and stops there. Describe the garden and the effect you want once, give your postcode, and local electricians and lighting installers come to you. There is no cost to the homeowner; the pros pay to receive enquiries. We do not design or install lighting, we play no part in pricing, and we neither vet nor rank nor recommend anyone who gets in touch.