The depth of your post hole depends on your post length. If you decide on a two-rail fence, the posts are likely 6 feet long. You want your hole to be at least 1/3 of the post length. In this case, your post hole should be two feet deep.

If you opt for a three-rail fence, the posts will typically be 7 feet long, meaning your post hole should be 28 inches deep.

Yes, installing wrought iron fencing will usually require a building permit, as do all types of fencing. Building permits for wrought iron fencing typically cost between $150 and $500, and the price will vary based on where you live and how much your local building department charges. You may also need to pay for a property survey if you’re installing wrought iron fencing on your property line. This type of survey can cost around $500, but it prevents issues with building on neighboring properties, which can be much more expensive in the long run.

A high-quality wrought iron fence is one of the most durable options available and can last a lifetime, or even centuries, with proper care. However, wrought iron is susceptible to rust and corrosion if not maintained.

To maximize its lifespan, regular maintenance is required. This includes:

• Cleaning the fence with soapy water every six months.

• Scrubbing away any rust or corrosion as soon as it appears.

• Applying a new coat of paint or refinishing the fence every few years to protect the metal from moisture and oxygen. The recommended frequency varies, with sources suggesting anywhere from every 1 to 10 years.

If significant rust develops, it's wise to hire a professional fence repair company to clean the rust and reseal the fence. The cost to refinish a fence is typically between $5 and $12 per square foot, a worthwhile investment to ensure its longevity.

Traditional bamboo fences use twine to attach pickets to posts and stringers, but you have to keep an eye on the twine, as it will deteriorate over time. Alternatively, you can fasten bamboo pickets to framing using fence screws.