Garden lighting: the £600 that changes how much you use the space

Here is something we notice on nearly every garden we go back to. The gardens that get used — the ones where the furniture is out in October and the owners are sat on the patio with a coat on — are almost always the ones with lighting designed into the build. The gardens that get used from June to August are the ones where lighting was left as a maybe.

On a £12,000 garden, the lighting is usually somewhere between £600 and £1,400. It is the smallest line on the quote and, measured in hours of actual use, it is comfortably the best value.

Why lighting is the highest-return line on the quote

Two reasons, and neither is about looking nice in photographs.

The first is simple daylight arithmetic. In Merseyside, sunset is before five o'clock from early November to early February. If your garden is invisible after dark, you have written off the entire back end of the day for four months of the year. Light it, and the patio becomes a room you can see from the kitchen even when you are not sitting in it.

The second is that light makes a garden look finished. A well-built patio in the dark is a black rectangle. The same patio with grazing light across the texture, uplighting on a multi-stem tree and a low wash along a retaining wall is the thing people photograph.

The timing problem

Almost all retro-fitted garden lighting looks retro-fitted. Cable runs surface-clipped along a fence, a transformer in a plastic box by the back door, spikes pushed into a border at whatever angle they will go.

Lighting designed into the build is invisible. Ducting goes in during the groundworks, before the sub-base is compacted. Deck riser lights are wired before the boards are fixed. Wall lights are chased in before the render or the cladding goes on. It costs almost nothing extra at that stage and is close to impossible afterwards.

Deciding on lighting after the paving is down is like deciding on plug sockets after the plaster. You can do it. It will look like you did it. Martin, MAE Landscapes

Which means the decision you actually need to make early is not "what lights do I want" — it is "do I want the ducting in". Even if the budget will not stretch to fittings this year, put the ducting and the draw cords in. It is a few hundred pounds during the dig and it keeps every option open.

The four types that actually earn their place

Step and riser lights. The safety argument is real — level changes in the dark are where people fall — but they are also the most flattering light in a garden, because they graze across the surface and pick up texture. If you have steps, light them.

Uplights on planting and structure. A single well-aimed uplight on a multi-stem birch or an established acer does more for a garden at night than a dozen path lights. Aim them so the source is hidden and you see the effect, not the fitting.

Wall washes and grazers. A low fitting close to a rendered wall, a stone-clad retaining wall or a slatted screen throws light up the surface and reveals texture. This is the one that makes a small garden feel bigger, because you are lighting the boundary rather than the middle.

A pergola or overhead light. If you have an outdoor kitchen or a dining pergola, you need functional light there — enough to see what you are cooking or eating. Everything else in the garden should be considerably dimmer than this point, so it reads as the focus.

What we would generally leave out: rows of path lights marching down a border like an airport runway, and colour-changing anything. Both date fast.

Four mistakes we see constantly

Too much of it. The instinct is to light everything. The result is flat and uncomfortable, and it kills any sense of depth. Good garden lighting is mostly darkness with a few things picked out.

Too cold. Anything at 4000K or above reads as a security floodlight. We specify 2700K, occasionally 3000K, which is warm and flattering on both planting and stone. This single choice makes more difference than the fittings themselves.

Cheap fittings in wet ground. Garden lighting lives outdoors in Merseyside. IP65 as a minimum, IP67 for anything in a border or set into paving where it will sit in water. Marine grade stainless or solid brass for anything you cannot easily get back to.

One switch for everything. Split the circuits. A "just the steps" setting for a Tuesday evening and a "everything on" setting for when people are round is the difference between lighting you use and lighting you turn on twice a year.

Specification: what to insist on

Nearly all domestic garden lighting we install is 12V low voltage, run from a transformer sized with headroom for future additions. Low voltage is safer to work around in a garden, cabling is less onerous, and adding a fitting later is straightforward.

Anything at mains voltage outdoors is notifiable work under Part P of the Building Regulations and must be done by a qualified electrician — we bring ours in for that. If a landscaper offers to wire mains outdoor lighting themselves without an electrician, that is a flag.

What it costs

For context, that is roughly five to ten per cent of a typical £12,000 to £15,000 garden transformation. It is the line people are most tempted to cut and the one we most often talk them out of cutting.

Neighbours, wildlife and not overdoing it

Two responsibilities worth taking seriously.

Aim fittings so the source is not visible from a neighbour's window. Most complaints about garden lighting are about glare rather than brightness, and shielding or re-aiming a fitting solves it.

Artificial light at night genuinely affects wildlife — moths, bats and hedgehogs all use darkness. Warmer colour temperatures are less disruptive than cold white, and putting the scheme on a timer that goes off at a sensible hour costs nothing. The RHS has good general guidance on gardening for wildlife if you want to think about it properly. Leaving part of the garden genuinely dark is not a compromise — it is better lighting design anyway.

Designing a scheme, zone by zone

The way we plan lighting on a garden build is to work outwards in three zones, and to give each one a different job.

The threshold. Wherever you step out of the house — bifolds, French doors, back door — needs enough light to see the step and the surface. This is functional, and it is the one setting you will use every single day in winter. Recessed floor lights or a discreet downlight over the door do it without glare.

The living area. Patio, dining space, pergola. Enough to see food and faces, warmly, and always dimmable if the budget allows. This is the zone people most often over-light. If you can read a newspaper on the patio, it is too bright.

The far boundary. This is the one that transforms a garden and the one most schemes miss. Lighting the far fence, a tree at the back, or a boundary wall pulls the eye through and makes the whole space feel deeper. In a small garden it is the difference between a lit patio with a black void behind it and a garden that reads as a whole.

Get those three right and you can stop. Everything beyond is decoration.

Running costs and controls

People assume garden lighting is expensive to run. It is not, and the numbers are worth stating.

A typical twelve-fitting low-voltage LED scheme draws somewhere around 40 to 60 watts in total — less than a single old-fashioned incandescent bulb. Running it for four hours a night through the winter costs a few pounds a month. The transformer is the only component with any real standby draw.

On controls, the setup we fit most often is a photocell to bring the scheme on at dusk and a timer to take it off at a set hour. That way it is on when you come home in the dark and off by midnight, without anyone having to think about it. Where a customer wants app control we will fit it, though we would gently point out that a physical switch by the back door gets used and an app frequently does not.

One practical note: size the transformer with headroom. Loading a transformer to its limit shortens its life and leaves you no capacity to add a fitting later. We specify around thirty per cent spare as standard.

Common questions

Can lighting be added to an existing garden? Yes, but expect it to cost forty to sixty per cent more than the same scheme installed during a build, and expect some visible cable runs. Borders and planted areas are easy. Anything crossing paving is not.

Do I need an electrician? For 12V low voltage, the garden side is ours. The transformer needs a supply, and any new mains circuit outdoors is notifiable work under Part P of the Building Regulations, so a qualified electrician does that part.

What about solar? Solar lights have improved and are fine as a decorative extra. As the basis of a scheme in Merseyside, in December, they are not. The output is low and the batteries struggle in cold weather with limited daylight.

Related reading: composite decking, where riser lighting does the most work, and our completed projects, most of which have lighting built in.