What the Specifications on a Fence Quote Describe

A fence quote is a short document describing a structure, and most of the numbers on it are doing real work. Reading it is easier once you know what each specification controls.

Here are the four that set both the price and the working life of a fence, and what each one means.

Post rating

Pressure-treated lumber comes in different preservative retention levels, and the meaningful distinction for a fence is ground contact versus above ground. Ground contact material carries substantially more preservative, and it is the material intended for use below grade. Above-ground rated lumber is intended for rails, pickets and anything that stays clear of soil.

The two look identical when they arrive, and they behave very differently over time in Piedmont clay, where the soil holds water against the wood for days after rain. This is the specification that most directly controls how long the fence stands.

Footing size and depth

A hole roughly three times the post width gives a genuine collar of concrete around the post. A narrower hole gives a thin shell, and a thin shell tends to crack, which admits water and then keeps it in.

Depth follows the height of the fence and how solid it is. Around a third of the post length below grade is the working standard here, so a six foot fence usually means eight foot posts with about two feet in the ground. Frost is not the driver in this part of Georgia, because winters are mild. Wind is, and a solid privacy panel presents far more surface to the wind than a picket or chain link fence at the same height, so it wants more depth and a wider footing.

Post spacing

Six feet and eight feet between posts are both normal spacings, and they produce noticeably different fences. On a hundred and sixty foot run, eight foot spacing needs about twenty-one posts and six foot spacing needs about twenty-eight. That is seven more holes and seven more footings.

Closer spacing gives a stiffer fence that resists wind better and sags less as rails age. Wider spacing costs less and is entirely adequate on a sheltered, level run. Both are legitimate construction, and the spacing on a quote is part of what the price describes.

Gate construction

Gates carry a load nothing else on the fence carries, so their specification is separate. A gate line generally describes the width, whether the posts are upsized and how they are footed, how the frame is braced, and what hardware is fitted.

The diagonal brace is the detail worth understanding, because it is the one that decides whether a gate still closes in year five. It runs from the bottom hinge corner up to the top latch corner, so the weight of the gate pulls it in tension. Run the other way it does very little. Self-closing hinges and a self-latching catch cost a little more and are the standard arrangement where a dog or a pool is behind the gate.

The items that sit outside the per-foot price

A few things are genuine costs that quotes handle differently, and seeing them named is useful context rather than a warning sign:

• Removing and disposing of an existing fence, which is real labor and real dump fees.
• The Georgia 811 utility locate, normally placed by the contractor as routine practice.
• Difficult digging, since rock, roots and hardpan all appear in Piedmont ground north of Columbus.
• How a sloped run will be handled, racked or stepped, and what closes the gaps if it is stepped.

Converting to a per-foot figure

Taking the total, setting aside the gates, and dividing by the linear footage gives a per-foot number, which is how fence work is quoted across the industry. That figure can be put against the published local ranges for the material to see where a particular job sits.

Two quotes that both say six foot pine privacy can differ substantially and both be sound, because the specifications above vary between them. The per-foot figure is the common language; the specifications are what it is buying.