What Are Eave Lights and Where Should They Go on Your House? | Placement Rules That Work

Eave lights are outdoor fixtures mounted along a home’s roof edge — on the soffit, fascia, or adjacent wall — that wash the exterior in downward light.

A single strand run at the wrong height or clipped to a crooked line separates a professionally lit house from a weekend experiment. The placement rules below come from manufacturers’ published mounting documentation and answer two questions: what these lights are, and where they belong.

What Counts As A Permanent Eave Light System?

A permanent eave light system is a fixed, weather-rated LED strand wired into household power and left up year-round, not a seasonal string. These systems wash light downward across the facade, mounting along:

• The roofline, tucked under the eave overhang
• Dormers and gable ends
• Pergolas, balconies, and covered patios
• Fascia boards where no soffit exists

Running on 120 VAC household power through a plug-in controller rather than batteries, they support everyday illumination, security lighting, and seasonal color changes from one app. The trade-off: once screwed in, moving the strand means patching holes.

Where Should Eave Lights Go On Your House?

Eave lights belong in a straight line parallel to the roofline, evenly spaced and a consistent distance from the house edge — that parallel, even line reads as professional from the street. Walk the exterior before drilling and map every edge you want lit: the main roofline, dormers, and any secondary structure. Then follow these rules:

• Keep the strand parallel to the roofline. A line that drifts toward or away from the house is the most visible installation error.
• Hold spacing consistent.
• Route cables straight. Avoid sharp edges that can cut insulation or pull a connector loose.
• Mount the controller vertically and inside strong Wi-Fi range, since these systems run on 2.4 GHz Wi-Fi.
• Keep the power supply more than 12 inches above ground level and plug it into an enclosed, weatherproof GFCI outlet.

Never nail through a wire or cable. Use the supplied clips, brackets, and screws.

How Do You Measure Before You Buy?

Measure the complete route — including every vertical and horizontal distance to the outlet — before ordering, because running short mid-roofline is the most common and most expensive mistake. Most buyers forget them.

Specifications vary by model. It runs on 2.4 GHz Wi-Fi and works with Alexa and Google Home.

To compare tested options before committing, our roundup of the best under eave lights breaks down what holds up outdoors.

Which Mistakes Cause Most Eave Light Failures?

Most failures trace back to three causes: a cable length that ignored vertical runs, a controller placed outside Wi-Fi range, and an outlet that was never GFCI-rated. The rest of the list is shorter than you would expect:

• Installing over sharp edges or leaving cables slack and crooked
• Trusting adhesive brackets alone where mechanical fastening is required
• Setting the power supply at ground level instead of above 12 inches
• Ignoring the product’s IP rating, or assuming every component shares one rating
• Assuming a paid subscription is needed — no manufacturer documentation reviewed here establishes that requirement

One more gate: eave lights are a plug-in, residential exterior product for US installations, and exact electrical requirements and included hardware vary by model. Work implicating building or electrical codes should follow the manufacturer’s instructions and local requirements; If the outlet in your plan is not GFCI-rated, fix that before mounting anything.