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Griswold maximal Christmas lights on a house
Maximal means every roof edge, window, shrub and tree is covered, with lawn figures on top. Plan on several circuits and a lot of clips.
Griswold maximal on a sample house. Mock-up from Pexels #3958958 (Pexels License).
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Griswold maximal: what the sources say
- The CPSC says never to string together more than three sets of incandescent lights and never to overload electrical outlets.1
- ESFI advises: “Match power needs (amperage) of electrical products with amperage rating of extension cords.”2
- ESFI says to keep yourself and your equipment at least 10 feet from power lines while decorating.3
- ESFI advises using the right ladder height, with ladders extending at least three feet past the edge of the roof.4
Verdict. Go maximal only if you will map circuits on paper and spend a weekend on the roof; the common failure is one overloaded cord feeding half the lawn.
Sources
Never string together more than three sets of incandescent lights and never overload electrical outlets.
(word for word, each from cpsc.gov)Match power needs (amperage) of electrical products with amperage rating of extension cords.
(word for word, each from esfi.org)Keep yourself and your equipment at least 10 feet from power lines.
(word for word, each from esfi.org)Use the right ladder height, ensuring ladders extend at least three feet past the edge of the roof.
(word for word, each from esfi.org)
Griswold maximal: bulbs, cost and effort
| Bulbs | Multicolor mini and C9 |
|---|---|
| DIY cost | $385 to $500 for an 80 to 160 ft roofline ($479 at 120 ft) |
| Pro install | $1,500 to $4,000 typical |
Parts list for a 120 ft roofline
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| Part | Qty | Each | Est. |
|---|---|---|---|
| C9 LED string, multicolor, 100 ft | 2 | $62 | $124 |
| Mini LED string, warm white, 66 ft (200 count) | 2 | $18 | $36 |
| Net lights, 4 ft x 6 ft, warm white | 4 | $16 | $64 |
| Lit reindeer or deer figures, 3 ft | 2 | $45 | $90 |
| Large lawn snowflake decoration, lit | 1 | $40 | $40 |
| Gutter and shingle clips, 100 pack | 2 | $14 | $28 |
| Outdoor extension cord, 25 ft, 16/3 | 3 | $15 | $45 |
| Outdoor timer or smart plug | 1 | $20 | $20 |
| Spare bulbs and end plugs | 1 | $10 | $10 |
| Outdoor power stake, 3 outlets | 1 | $22 | $22 |
| Estimated total | $479 | ||
Rough 2026 US prices; links search Amazon.
How to DIY griswold maximal lights
- Map circuits first: one outlet carries about 1,440 watts, and LEDs use far less.
- Do the roof, then windows, then plants, then figures.
- Label every cord so you can fix a dead section fast.
Griswold maximal: common questions
What are griswold maximal Christmas lights?
Maximal means every roof edge, window, shrub and tree is covered, with lawn figures on top. Plan on several circuits and a lot of clips.
How much do griswold maximal Christmas lights cost?
DIY materials: $385 to $500 ($479 at 120 ft). Pro install: $1,500 to $4,000.
What lights do I need for the griswold maximal look?
Multicolor mini and C9.