Wood Privacy Fence Cost Per Linear Foot: Posts, Rails & Pickets Breakdown
Installing a standard 6-foot pressure-treated wood privacy fence averages $18 to $32 per linear foot installed by a fencing contractor, or $9.50 to $14.00 per linear foot in raw DIY materials. Understanding how 6-ft versus 8-ft post spans affect structural deflection and material counts is crucial for long-lasting fence lines.
Cost Per Linear Foot Overview
A standard 100-foot run of 6-foot pressure-treated pine privacy fence requires approximately $1,150 to $1,450 in raw lumber, concrete, and exterior fasteners.
Contractor labor adds $10.00 to $18.00 per foot, bringing the total turnkey contractor cost to $2,000 to $3,200 for 100 linear feet, including post hole digging, plumb setting, and gate assembly.
6-ft vs. 8-ft Post Spacing Comparison
While 8-foot on-center post spacing uses fewer 4x4 posts and concrete bags, it exposes the horizontal 2x4 rails to sagging over time, particularly in high-wind or high-snow climates.
6-foot on-center spacing provides 33% higher lateral wind resistance and ensures rails remain straight, making it the preferred commercial standard.
Material Bill of Materials Breakdown
1. 4x4 Ground-Contact Posts: Posts must be buried at least 24 to 36 inches deep (below local frost line). An 8-foot post ($14.25) is used for a 6-foot fence.
2. Fast-Setting Concrete: 2 fifty-pound bags ($6.85/bag) per hole provide instant stability without waiting 24 hours to attach rails.
3. 2x4 Rails: 3 horizontal rails are mandatory for 6-foot fences to prevent picket warping ($7.65 per 8ft rail).
4. 1x6 Dog-Ear Pickets: Standard 5.5-inch face width pickets ($2.95/ea) provide clean privacy coverage with a 5% cut waste buffer.
Frequently Asked Questions
How many posts and pickets do I need for a 150 ft fence?
At 8ft spacing, a 150ft fence requires 20 posts (4x4x8'), 40 bags of fast-setting concrete, 57 rails (2x4x8'), and approximately 345 pickets (1x6x6').
Do I need 2 or 3 rails on a 6-foot privacy fence?
Always use 3 horizontal rails on any fence 6 feet or taller. 2 rails allow pickets to twist and warp within 12 months under direct sunlight and weather cycles.