Your gate should be 3/4 to an inch smaller than the opening. The opening size that you need for your gate can vary depending on your hinge type. You may also need to add reinforcing braces if the gap between your gate and the fence is not uniform from top to bottom.

While it is possible to install a manual gate yourself, it is generally not recommended. Professional installation is strongly advised, especially for automated or large driveway gates. Gates can be extremely heavy, sometimes weighing hundreds of pounds, which makes them bulky and dangerous to maneuver into place. Proper installation requires perfect positioning and balancing to ensure the gate swings smoothly and functions as intended. For automated gates, the wiring is also hazardous and typically requires a licensed electrician. Mistakes during a DIY installation can be costly, as materials alone can average around $1,000. Given the safety risks and the difficulty of achieving a proper setup, it is best to hire a professional gate installer.

The best direction for a gate to swing depends on its location and purpose, but swinging inward is the general rule. An inward swing is often considered safer, prevents the gate from opening into public spaces like a sidewalk, and may be required by local building codes.

There are exceptions and specific considerations. If your property is on a slope, an inward swing might not be possible. For a deck gate, it's safest to have it swing away from any steps. In a backyard, the direction can be a matter of preference, though an inward swing can be helpful when carrying heavy items like a wheelbarrow into a garden.

Regardless of direction, ensure the gate can open fully without hitting any objects or blocking spaces. While an inward swing is standard, a gate that can swing both in and out offers the most flexibility if your setup allows for it.

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.