The obvious disadvantage of an automatic gate is that it runs on electricity. If the power goes out, it won’t open or close unless there’s a manual override. Many homeowners will need a backup generator so they don’t get stuck on either side of the gate, particularly when looking to park a vehicle. Automatic gates are also much more complicated than manual gates, with tech-heavy components that make them more expensive to repair.

In most cases, you will need a permit to install a new driveway or property gate. An exception might be if you are simply replacing an existing gate. Before issuing a permit, your local municipality may require a site plan or survey to verify property lines and prevent encroachment on a neighbor's property. Permits for a gate typically cost under $100. Be aware that corner properties may have additional restrictions on gate height or style. It's wise to confirm permit requirements with your local building department or your gate installation company, which can usually handle the entire permitting process for you.

Double gates come with the same gaps as single gates, with hinges taking up a quarter of an inch of space. The difference is that double fence gates also have a center gap, which needs a little more clearance. Space the center gap at half an inch instead of the usual three-eighths of an inch for a single gate. 

The cost to install a gate varies widely, with a typical range between $1,500 and $7,000. The average cost is around $3,500. However, the final price can be as low as $200 for a simple gate or as high as $12,000 for a large, automated security gate.

Key factors that determine the installation cost include:

• Gate Material: This is a primary cost factor. Chain-link and vinyl are the most affordable, while wood and PVC are mid-range options. Wrought iron, aluminum, and other metals are the most expensive materials.

• Automation: Automated gates are significantly more expensive than manual ones because they require motors, sensors, controls, and electrical installation.

• Size and Type: The dimensions and style of the gate (e.g., swinging vs. sliding) will impact the price.

• Security Level: Gates with advanced security features will increase the overall cost.