How Much Fence for a 120×150 Yard?
A 120 by 150 foot yard (18,000 sq ft) needs 540 feet of fence to enclose all four sides, or 420 feet if your house covers one 120-foot side.
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Posts
56
Concrete
112
Pickets
1344
Rails
159
Est. Cost
$6,300–$10,500
Fence Footage for a 120×150 Yard
The perimeter of a rectangle is 2 × (width + depth). For 120 × 150, that is 2 × 270 = 540 feet. Most backyard fences only run three sides because the house closes off the fourth: one 120-foot back line plus two 150-foot sides, or 420 feet. If your fence returns to the house partway along the side, measure that actual run instead.
For a wood privacy fence on three sides you'd buy about 56 posts, 112 bags of concrete, 159 rails, and 1,344 pickets. Enclosing all four sides raises that to 71 posts and 1,728 pickets.
Cost to Fence a 120×150 Yard by Type
| Fence type | Posts (3 sides) | 3 sides (420 ft) | 4 sides (540 ft) |
|---|---|---|---|
| Wood Privacy | 56 | $6,300–$10,500 | $8,100–$13,500 |
| Vinyl | 56 | $8,400–$14,700 | $10,800–$18,900 |
| Chain Link | 45 | $3,360–$6,300 | $4,320–$8,100 |
| Picket | 56 | $4,200–$7,560 | $5,400–$9,720 |
| Split Rail | 56 | $4,200–$7,560 | $5,400–$9,720 |
Material estimates with one walk gate. Professional installation typically adds $5–$15 per foot.
Other Yard Sizes
Recommended Materials
Pressure-Treated Fence Post 4×4×8
Ground-contact rated, ideal for all fence types.
$12 – $18
Cedar Dog-Ear Picket 1×6×6
Naturally rot-resistant, smooth on one side.
$3 – $6
Quikrete 60 lb Fast-Setting Concrete
Sets in 20-40 minutes. No mixing required.
$5 – $7
Post Hole Digger – Fiberglass Handle
Heavy-duty clamshell digger for clean holes.
$35 – $55
Simpson Strong-Tie Fence Bracket
Galvanized L-bracket for rail-to-post connections.
$4 – $8
Decorative Post Cap 4×4
Copper-top cap, fits standard 4×4 posts.
$5 – $12