Adding a fence extension can create up to 8 feet of height for your fence. This added portion may also be angled to help contain dogs who like to jump or to keep deer out of your yard. While a solid privacy fence might be 6 feet height, adding an additional two foot extension will give you an added visual component, since those last two feet will be made of lattice or open work to reduce wind resistance.
You will have to consult two "jurisdictions" about this question as either or both will likely control fence heights. First, your local government (city or county) planning department can tell you what the code allows for fence height and how they measure it.
Before adding extra height to your existing fence, verify that you can do so without breaking city or homeowners association rules. You can add 2 feet of height by adding boards to the top of your fence to match your fence or by adding height to the post supports and then using lattice slats.
Although growing vines on a trellis is one way to add height and privacy to a fence, another way is to plant fast-growing trees or shrubs near the fence. Try oriental arbortvitae (Thuja orientalis and Biota orientalis), which is hardy in USDA zones 6 through 11. Its mature height is 18 to 25 feet, and its mature width is 10 to 15 feet.
Then, add the quirkyness of the varying height Big Sur privacy fence to this post idea. ... Take a 2x4 and cut them into squares to fit the existing fence posts. Fences for Horses | Publications | UGA Extension
Pool fence - 4 feet; Deer fence - 8 feet; The height of your fence will be largely dependent on the purpose for the fence. If your fence is mainly decorative then the height is not a concern. However, if you desire to add privacy to your yard then your fence will need to be tall enough to block out neighbors' views.
DIY : privacy fence - trellis added to the top of the fence panels to add height and privacy Find this Pin and more on Things I want by Linda Sue Johnston. Simple backyard privacy fence ideas on a budget
To add privacy and provide stability to an older fence, I headed to my local hardware store and bought a few fence boards. The boards pictured cost $3.85 a board and, depending on how tall you need your boards cut, one fence board provides approximately three privacy boards.