How to Build a Deer Fence | Height, Mesh, and Setup That Works

A deer fence that works stands at least 7.5 feet tall with small mesh, tight posts, and a secured bottom edge.

Build it lower and you’re wasting the effort. Here’s what actually matters when building a deer fence, from the ground up.

How Tall and How Tight Should the Fence Be?

Tall enough to stop a jump, and tight enough to stop a squeeze-through. On slopes, add height on the uphill side because grade changes reduce the effective barrier height. Mesh opening size matters as much as height: keep openings no larger than about 7 x 12 inches so deer can’t push through or get a hoof caught, and smaller openings also help exclude smaller animals if needed.

What Post Spacing and Materials Work Best?

Space posts 10–15 feet apart for most woven-wire systems, and 15–20 feet for high-tensile wire with proper tensioning. Tighter spacing gives a stronger, stiffer fence that resists sagging over time. Set posts at least 2–3 feet deep; treated posts set 3 feet deep handle windy sites and heavy deer pressure far better than shallow sets.

How to Install a Deer Fence: Step-by-Step

Measure the perimeter with a tape measure or measuring wheel, then add 10% extra for overlap, gates, and terrain surprises. Mark post locations before digging, then follow this order:

• Set corner and end posts first — they carry the tension. Brace them well with diagonal supports.
• Install line posts at your chosen spacing, setting each one at least 2–3 feet deep and plumb.
• Attach the mesh with fence ties, staples, or clips, starting at the top and working down.
• Keep the mesh taut as you go; sagging mesh invites deer to push through or under.
• Secure the bottom edge by burying it 6–12 inches, folding it outward and pinning it, or staking it down every 4–5 feet.

Deer will exploit any gap at ground level—they nose under, lift, and push. A fence with a loose bottom edge is a fence with a door.

Common Deer Fence Mistakes to Skip

The failures are predictable. Building too low tops the list—anything under 7 feet will likely fail against white-tailed deer. Leaving the bottom unsecured is second. Spacing posts too far apart for your mesh causes sagging and lost tension. And ignoring slopes quietly drops your effective height on the uphill side. One more thing worth doing: add visual markers. Warning ribbons placed about 4 feet above ground help deer see the barrier before they test it, cutting down on fence damage from startled jumps.

If you’re planning a fence and want to compare pre-built kits by height, mesh size, and price, our tested deer fence kit roundup covers the options that hold up under real deer pressure.

Site-specific conditions change the design—species, deer pressure, slope, gate openings, and whether you also need to exclude smaller animals all affect your choice. The specs above reflect current wildlife-management guidance for white-tailed deer, the species most U.S. gardeners face. Oregon’s deer and elk fencing guidance covers the height and mesh logic in detail if you want the underlying research.

Build shorter, skip the bottom security, or space posts too wide, and you’ll be patching gaps by next season. The formula is simple: tall enough, tight enough, and secured at the ground.