Total Linear Feet
100
Posts
19
Panels/Rolls
13
Est. Cost
$1,530
Total Fence Line
100
linear feet
Posts
19
Rails
26
Wood Picket at $15/ft
Deer Protection
Deer can jump 8 ft. For deer-proof fencing, build at least 8 ft tall or use a double-fence system with 4–5 ft spacing.
Inputs
Result
Perimeter = 2(30+20) = 100 ft. Fence run = 100 - 3 (gate) = 97 ft. Posts = ceil(97/8) + 4 corners + 2 gate = 19. Rails = 18 × 2 = 36. Panels = ceil(97/8) = 13. Cost = 97 × $15 + $75 gate = $1,530.
Inputs
Result
Perimeter = 2(20+20) = 80 ft. Fence run = 80 - 3 = 77 ft. Posts = ceil(77/8) + 4 + 2 = 16. Rails = 15 × 2 = 30. Rolls = ceil(77/50) = 2. Cost = 77 × $3 + $75 = $306.
Inputs
Result
Perimeter = 2(50+30) = 160 ft. Fence run = 160 - 6 = 154 ft. Posts = ceil(154/8) + 4 + 4 = 27. Rails = 26 × 3 = 78. Panels = ceil(154/8) = 20. Cost = 154 × $22 + $150 = $3,538.
Fence posts are typically spaced every 8 feet, plus corner and gate posts. For a 30×20 ft rectangular garden (100 linear ft perimeter), you need about 17 posts: 13 line posts, 4 corner posts. Add 2 posts per gate opening.
| Garden Size | Perimeter | Posts (8 ft spacing) | Approx. Cost |
|---|---|---|---|
| 10×10 ft | 40 ft | 9 posts | $135–$600 |
| 20×20 ft | 80 ft | 14 posts | $240–$1,200 |
| 30×20 ft | 100 ft | 17 posts | $300–$1,500 |
| 50×30 ft | 160 ft | 24 posts | $480–$2,400 |
Deer can jump up to 8 feet, so a deer-proof fence must be at least 8 ft tall. Wire mesh or polypropylene deer netting at 8 ft height is the most cost-effective option at $3–8 per linear foot. A double-fence system with 4–5 ft spacing also works with shorter fences.
Fence posts should be buried 1/3 of their total length. For a 4 ft fence using 6 ft posts, set them 2 ft deep. For a 6 ft fence using 9 ft posts, set them 3 ft deep. Always set below the frost line in cold climates and use concrete for stability.
Vinyl fencing lasts 25–30 years with virtually no maintenance, making it the longest-lasting option. Cedar wood lasts 15–20 years with regular staining. Chain link and welded wire last 20–25 years. Chicken wire is the shortest at 5–10 years.
| Material | Lifespan | Cost/ft | Maintenance |
|---|---|---|---|
| Vinyl | 25–30 yrs | $22 | Annual hose-down |
| Wood Picket | 15–20 yrs | $15 | Stain every 2–3 yrs |
| Wire Mesh | 20–25 yrs | $8 | Check for rust |
| Chicken Wire | 5–10 yrs | $3 | Replace when rusted |
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Last Updated: Mar 11, 2026
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