How do you choose the right size outdoor wall light for your wall?

For a standard UK front door of around 2 metres, choose an outdoor wall light between 450 mm and 650 mm tall. This follows the one-third rule: the fixture should occupy roughly one third of the height of the door or wall section it sits beside. Anything smaller disappears against the brickwork; anything larger dominates the entrance and can look disproportionate on a terraced house. Position the fitting about 1.7 metres from ground level, centred on the door reveal, with 150–300 mm clearance from the door frame so it cannot be struck when the door opens. When specifying outdoor wall lights for entrances, remember that a pair of fittings either side of the door should be identical in size and mounted at exactly the same height — a 20 mm mismatch is visible from the street. On narrow reveals under 300 mm, use a flush or low-profile fitting rather than an arched arm, which projects 200 mm or more and will crowd the space.

Wall area dictates scale. A single 500 mm fitting on a 6-metre gable wall will look lost, so either increase the fixture size to 700–900 mm or install a pair spaced evenly across the wall — typically 2.5–3 metres apart for a balanced rhythm. Conversely, a narrow pier between windows offers perhaps 500 mm of usable width, so the fitting should be no more than 400 mm tall and 200 mm wide to leave breathing room on both sides. Measure the mounting zone before ordering: mark the fixing position with tape and hold a cardboard cutout of the fixture's footprint against the wall. This takes five minutes and prevents the most common sizing error, which is ordering a backplate wider than the available brick course. Check the projection too — fittings that extend more than 250 mm from the wall can obstruct paths and feel intrusive above a walkway. If the wall is rendered or clad rather than brick, confirm the backplate spans at least two fixing points into solid substrate, not just the render layer.

Mount wall lights between 1.7 and 2 metres above finished ground level for entrances and pathways. At this height the light falls across the door and step without glare at eye level, and the fitting stays clear of head height for anyone approaching. Below 1.5 metres the source becomes glaring; above 2.4 metres the pool of light drifts away from the door and the fixture reads as decoration rather than task lighting. Keep 150–300 mm horizontal clearance from the door frame or window reveal. For garage doors, centre a single fitting above the door or place one either side at the same height as the entrance standard. Where wiring is being run new, circuits must comply with BS 7671 and outdoor work is best certified — the NICEIC householder electrical services page explains how to find a registered electrician for external installations. Use IP44 minimum for covered locations and IP65 for fully exposed walls, and confirm the fitting's declared mounting orientation before fixing, since some wall lights are designed to sit only upright.

Proportion is as much architectural as mathematical. Victorian and Edwardian facades carry tall, narrow lantern shapes well — a 600–700 mm fitting with a clear glass panel echoes the door proportions and glazing bars of the period. Modern renders and monopitch extensions favour compact geometric fixtures, 250–400 mm tall, with a shallow projection of 100–150 mm so the fitting reads as part of the wall plane rather than an addition. On either style, the one-third rule still governs: the fixture should be roughly one third of the height of the element it flanks. Avoid mixing scales across a single elevation — a large lantern beside the front door and a small downlight beside the garage will look unresolved. If recessed or concealed lighting is part of the wider scheme, NHBC guidance on recessed ceiling lighting covers the fire and installation considerations for recessed fittings, which apply to covered porches and canopies as much as interiors. Match the finish to existing ironwork — black powder-coated steel suits most UK brick and render palettes.