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A metal fence can last for over 30 years if maintained correctly, though the exact lifespan varies by material. For instance, chain-link and aluminum fences can function well for 25 to 30 years, while corrugated metal fences may last up to 60 years with regular maintenance. The lifespan can be shortened by harsh weather, abuse, or lower-quality materials. Galvanized metal tends to last longer due to its protective barrier, whereas sheet and corrugated metal may rust faster than solid pieces.

The average lifespan of a wood fence is 15 to 20 years, but some can last for 40 years or more depending on several factors. The type of wood is crucial; for example, untreated pine may only last 5 to 10 years, while pressure-treated pine can last up to 20 years, and cedar's natural resistance can extend its life to 40 years. Other factors include local weather conditions, with wet and windy climates causing faster deterioration, and the quality of maintenance. Higher-end wood, metal posts, and privacy fence styles also tend to last longer.

Ideally, when you replace a fence post, you should also replace the concrete footing. The concrete bonds to your new post, creating a secure base. If you install a new post into old concrete, it won’t be as sturdy.

That said, it is possible. Sometimes the post will lift right out of the concrete. If not, you can use a high-lift car jack to try and lift the pole out of the footing. Put the new post into the same hole and backfill it with fast-setting concrete. Keep in mind, this won’t work well for metal posts.

The average cost to install a fence is between $1,800 and $4,500. However, the price can vary significantly based on several factors. For a small DIY project, costs could be as low as $450, while fencing a large property like a 5-acre yard can exceed $43,000. Key factors that influence the total cost include the fence's size and height, the material used, the complexity of the design, site preparation needs, and any additional features like gates. The cost of raw materials, manufacturing, and custom fabrication can also impact the final price.