Low-Voltage Landscape Lighting: Planning, Components & Installation

Adding Landscape Lighting to the Front of a House

A homeowner wants to install landscape lighting with a gardener doing the labor. They need guidance on fixture types, budget, and control (preferably from an indoor switch or timer).

Professional vs. DIY

A professionally installed low-voltage system (5–6 fixtures, 500W transformer) costs ~$1,500–$2,000 ($200/fixture). If wiring to an indoor switch or using 120V, a licensed electrician is required.

DIY Low-Voltage System Components

• Transformer: Sized for total wattage + 20% (e.g., 6 lights × 50W = 300W → 500W transformer). Must plug into a GFCI-protected outdoor receptacle.
• Fixtures: Avoid plastic kits. Quality metal fixtures: $30–$150 each. Types: path lights, uplights, well lights, wash lights.
• Wire: 12/2 or 10/2 low-voltage cable. Use waterproof connectors (silicone-filled).
• Design: Don't bury wire until you've tested light positions at night. Move fixtures until effects are pleasing.

Control Options

• Plug-in timer on transformer (simplest).
• Smart plug for phone/app control.
• Photocell + timer on transformer (dusk-to-dawn with off-time).
• Indoor switch: Requires low-voltage wire run to a switch controlling the transformer's primary side—electrician needed.

Key Advice

Start with a few high-impact lights (uplighting trees, washing the facade, path lights). Expand later. Research "landscape lighting design" for techniques like grazing, silhouetting, and moonlighting.