Christmas Lights: Plan, Hang and Take Down Without the Guesswork

Updated November 1, 2026 · General information, not electrical or safety advice

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The short answer: Measure first, buy outdoor-rated LED strands and the right clips, plug into a GFCI-protected outlet, and use a ladder safely with a helper. Our free calculator tells you how many strands, clips, cords and timers to buy. Then pick the how-to guide for your house.

This site explains how to put up Christmas lights using government, university, utility and installer sources, and links to each one. We do not invent prices or statistics. Where we found no good source, we say so.

Start here: the Christmas light calculator

Enter your roofline, windows, trees and bushes. Get strands, clips, cords, timers and a quick outlet power check.

Open the calculator

Guides

Ladder and electrical safetyOutdoor-rated, GFCI, strand limits, ladder angle, power lines How to hang Christmas lightsPlan, measure, test, clip, power: the full routine Lights on a houseGutters, shingles, trim, brick, stucco: what attaches where Lights on guttersClips, spacing, vinyl vs metal, fixes for sagging Lights with gutter guardsMesh guards, shingle clips and the pole method Lights without guttersShingle clips, fascia, trim and ground-level options Lights outside without nailsClips and adhesives for gutters, shingles, trim and masonry Lights on stuccoAdhesive clips, roofline options and EIFS cautions Lights outsideOutdoor-rated gear, GFCI power, timers and weather Lights around windowsHow much string, clips for trim, hooks for glass Lights insideWalls, mantels, trees and cords, without damage Lights on a ceilingRemovable fasteners, light strands and ladder tips LED vs incandescentDOE and ENERGY STAR numbers on energy, cost and heat Solar Christmas lightsCharge and run times, cloudy days, where they fit Permanent vs seasonal lightsSourced prices, our break-even math, what to ask Installer vs DIYSourced price ranges, DIY costs, questions to ask Outdoor Christmas lightsTypes, ratings, strand length and what to check Taking down and storing lightsDry, wrap, label and recycle; ladder tips on the way down Last-minute Christmas lightsUSPS send-by dates plus a use-what-you-have plan

Safety first. Use only lights and cords rated for outdoor use, plug them into a GFCI-protected outlet, keep ladders and light strands at least 10 feet from overhead power lines, and have a helper. Hire a licensed electrician for any wiring or new outlet. See our safety guide. This reminder is ours; the sourced details are on that page.

Common questions

How many Christmas lights do I need for my house?

Measure your roofline and add 10% for slack, then divide by the length of the strands you plan to buy. A retailer's planning guide says strands typically run 25 to 50 feet. Our free calculator does the math and also counts clips, cords and timers.

What is the safest way to hang Christmas lights outside?

Use lights and cords rated for outdoor use, plug into a GFCI-protected outlet, follow the maker's limit on connected strands, and keep ladders and strands at least 10 feet from overhead power lines. Have a helper hold the ladder and keep three points of contact (Idaho Power, University of Illinois Extension, OSHA).

Are LED Christmas lights worth it?

The U.S. Department of Energy says LED strands use 70 percent less energy than conventional incandescent strands. It puts the cost to light a 6-foot tree for 12 hours a day for 40 days at $0.27 with LEDs and $10 with incandescents. ENERGY STAR says certified strings can last up to 10 times longer.

Can I hang Christmas lights without nails?

Yes. Clips made for gutters, shingles and trim hold lights without piercing the cord or the house. Several guides advise against nails and staples because they can damage the cord. See our no-nails guide for surface-by-surface options.

Sources