Estimated installed cost by material
| Material | Low $/ft | High $/ft | Estimated total |
|---|
Rates are rough US 2025 installed-cost ranges per linear foot and are fully editable — adjust them for your material, terrain, and local labor.
How to measure how much fence you need
Fencing is sold and priced by the linear foot, so the number you actually need is your lot's perimeter — the total distance around its edge. For a rectangular lot, that's simply 2 × (length + width). Walk or measure each side, add them up, and you have the run of fence to enclose the property. Subtract the width of any gates or openings you plan to leave, then divide by your post spacing — commonly one post every 8 feet, plus one extra to close the run — to get a post count.
Here's the trap that surprises people: perimeter is not the same as acreage, and shape matters enormously. Two lots can be exactly one acre and need wildly different amounts of fence. A square acre is about 208.7 feet per side, so it takes roughly 835 feet of fencing. But a long, skinny acre — say 50 feet wide and 871 feet deep — covers the same area while needing about 1,842 feet of fence, more than double. That's why a tool that only knows your acreage can only guess; if you know your real length and width, use them.
The biggest variable, though, isn't the math — it's where the line actually is. Before you order materials or call an installer, verify your boundary. A fence set even a few feet onto a neighbor's land can mean tearing it out, a property dispute, or losing ground to adverse possession over time. Pull your parcel map, check for survey pins, and where the corners are unmarked, see the line on the ground first. Measure twice, set posts once.
Before you set a single post, know exactly where your line is
ParcelVision draws your property boundary on the ground through your iPhone camera, so you can walk the line and see exactly where it falls before you buy materials or break ground. Search your address free.
See ParcelVision on the App StoreFence calculator FAQ
How much fencing do I need for an acre?
It depends on the shape of the lot, not just its size. A perfectly square one-acre lot is about 208.7 feet on each side, so it needs roughly 835 linear feet of fencing to enclose. A long, narrow acre needs far more — a 50 ft by 871 ft acre has the same area but needs about 1,842 feet of fence. Use the calculator above with your actual length and width for an accurate estimate.
How do I calculate fence perimeter?
For a rectangular lot, perimeter equals 2 times length plus width: 2 × (L + W). A 100 ft by 150 ft lot has a perimeter of 2 × (100 + 150) = 500 feet. If you only know the acreage and the lot is roughly square, convert acres to square feet (1 acre = 43,560 sq ft), take the square root to get one side, and multiply by four.
How many fence posts do I need?
A common rule is one post every 8 feet, plus one extra post to close the run. Divide your total perimeter by 8, round up, and add 1. For an 835-foot square acre that works out to about 106 posts. Corners, gates, and slopes can add a few more, so treat the number as a starting estimate.
Do I need to know my property line before building a fence?
Yes. Building a fence on the wrong side of the line is one of the most common and expensive mistakes homeowners and landowners make — it can force you to tear the fence down, trigger a neighbor dispute, or even hand over land through adverse possession. Confirm your boundary before you buy materials. ParcelVision draws your property line on the ground through your iPhone camera so you can see exactly where it falls before the first post goes in. It is a visual reference, not a replacement for a licensed survey.