Why is the cost per acre so much lower here?

Because you are paying for perimeter, not area. Five acres has five times the ground but roughly twice the boundary, so the cost per acre enclosed falls by more than half compared with a single acre.

Should I fence the whole boundary?

Rarely, at this size. Most five-acre owners fence a yard, a paddock, or a specific area, and mark the rest of the boundary another way. Work out the section you need rather than the whole perimeter.

Do I need a permit for a boundary this long?

Possibly, and possibly a survey as well — the further a fence runs, the more expensive a boundary dispute becomes. Confirm the line before you set posts, not after.

Fence Ledger

How much fencing do I need for 5 acres?

Five acres is 217,800 square feet — a little over 1,860 feet of fence if the parcel is square, and considerably more if it is not.

If the lot is square

1,867 ft of fence

Most lots are not square. The table below shows what the other shapes need.

What the usual answer misses

Five acres needs only about 2.2 times the fence of one acre, despite having five times the land. Perimeter grows with the square root of area, which is why enclosing large parcels costs far less per acre than enclosing small ones — and why the first acre is always the most expensive one to fence.

Same acreage, five shapes

Fence needed for 5 acres at five lot shapes
Lot shape	Dimensions	Fence needed	Extra vs. square
SquareThe shape the usual answer assumes.	467 × 467 ft	1,867 ft	the usual answer
3:2Slightly deeper than wide — common on newer plots.	381 × 572 ft	1,905 ft	+38 ft$962–2,117 installed
2:1A typical suburban lot.	330 × 660 ft	1,980 ft	+113 ft$2,831–6,228 installed
3:1Deep and narrow, common in older subdivisions.	269 × 808 ft	2,156 ft	+289 ft$7,220–15,883 installed
4:1A long strip — a flag lot or an infill plot.	233 × 933 ft	2,333 ft	+467 ft$11,667–25,668 installed

Cost column uses the site's verified installed range of $25–55 per linear foot for wood privacy fence. Ranges are national planning figures, not quotes.

Work out your own

Every assumption above is editable. Change the length, the spacing, the hole size — the numbers and the working update as you go.

Units

Shape

Fence length

Height

Gates

Advanced options

These are typical values, not requirements. Post depth in particular is governed by your local frost line and building code — check before you dig.

Post spacing

Gate width

Picket gap

Hole diameter

Hole depth

Gravel base

Bag yield

Waste allowance

Posts

235

Sections

233

Pickets

4,277

Concrete

391 bags

Estimated cost

Materials only (DIY)

$15,136 – $37,940

Professionally installed

$46,875 – $103,285

National planning ranges compiled from published US construction cost guides, last checked September 2026 (confidence: medium-low). Prices vary sharply by region, season and contractor. These are estimates for planning, not quotes.

Sources: homeguide.com, calcsummit.com, angi.com, ergeon.com, homewyse.com

Shopping list

Bill of materials for this fence
Material	Size	Quantity
Posts	4x4	235
Rails incl. waste	2x4	769
Pickets incl. waste	1x6	4,277
Concrete mix		391bags
Gravel		86bags
Exterior screws		≈27,600
Walk gate kit		1

Why these numbers

How we got the section count

Run 1: 1,863 ft ÷ 8 ft = 232.88, rounded up to 233 sections

How we got the post count

3 posts are fixed by the shape itself
2 at the open ends
1 carrying a gate
232 line posts spaced between them
235 posts in total

How we got the picket count

Each picket covers 5.5 in plus a 0.25 in gap, so they repeat every 5.75 in
1,863 ft of fence needs 3,888 pickets
Plus 10% for offcuts, rounded up to 4,277

How we got the concrete

Each 10 in hole is 30 in deep, less 4 in of gravel base, leaving 26 in of concrete
The 4x4 post itself takes up part of that, so each hole needs the remainder
Across 235 posts
Divided by the 0.6 cu ft a bag yields: 390.65, so buy 391 bags

Common questions

Why is the cost per acre so much lower here?: Because you are paying for perimeter, not area. Five acres has five times the ground but roughly twice the boundary, so the cost per acre enclosed falls by more than half compared with a single acre.
Should I fence the whole boundary?: Rarely, at this size. Most five-acre owners fence a yard, a paddock, or a specific area, and mark the rest of the boundary another way. Work out the section you need rather than the whole perimeter.
Do I need a permit for a boundary this long?: Possibly, and possibly a survey as well — the further a fence runs, the more expensive a boundary dispute becomes. Confirm the line before you set posts, not after.