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Privacy fences in residential neighborhoods tend to stand between 6 and 8 feet tall, but local building code usually dictates the maximum height. Livestock fences that border large land plots range from 3 to 6 feet. Shorter, decorative fences, which are common in front yards, are around 3 feet tall, on average. Fence height also tends to vary by material, with wood fences usually sitting at 6 feet tall, and chain-link and wrought iron fences tending to sit at half that.

If 20% or more of your fence is damaged, pros will often tell you that it’s a better use of your money to replace the fence entirely. Severe rotting and insect damage always call for a replacement. However, if you’re just dealing with a few loose posts or a little bit of mildew growth, you can repair the fence.

Moisture and rot are the largest threat to wooden fences. Stain can help your wood fence last 15 to 20 years, but only if you choose a stain with waterproofing qualities or add a sealant. Oil-based stains create a thicker moisture barrier than water-based stains, though both are mold and mildew resistant. You’ll generally need to re-stain your fence every one to eight years to get full protection.

The lifespan of a metal fence varies by specific material and makeup, but even then, all options can last for quite a while. Chain-link and aluminum fencing will look good and function properly for anywhere from 25 to 30 years—provided they’re properly cared for. And corrugated metal fences can live up to 60 years with regular maintenance.