Key Takeaways
- Measure the full fence run before estimating post count — post spacing assumptions can be off by a full post over a long run.
- Gate width and swing direction should be decided and drawn before ordering hardware.
- Grade changes along the line affect both material needs and labor time — mark them on the layout.
- A fence layout doubles as a scope reference if the client later asks what was included.
- Property line proximity should be flagged, even on a working drawing, if it isn't survey-confirmed.
Who This Is For
- Fence contractors quoting residential or light commercial jobs
- General contractors including fencing as part of a larger scope
- Estimators who need consistent material counts across multiple fence quotes
- Crews confirming layout before digging post holes
Tools or Information Needed
- Field measurements of the full fence run
- Gate location and width requirements from the client
- Notes on grade changes or obstacles along the line
- A scaled drawing tool such as the SiteBuildHub Fence Layout Tool
Step-by-Step Workflow
- 1
Draw the full perimeter at scale
Start with the complete fence run based on field measurements, not an estimate from a satellite photo. Irregular lots often have runs that aren't simple straight lines — capture every angle.
- 2
Mark corner and end posts first
Corners, ends, and gate posts are structural anchor points. Place these before filling in line posts, since spacing math works outward from these fixed points.
- 3
Add line posts at your standard spacing
Fill in line posts at your typical on-center spacing (commonly 8 feet for wood, closer for vinyl or ornamental). Note where spacing has to adjust to hit a corner or gate cleanly.
- 4
Place gates with width and swing direction
Draw each gate at its actual width and mark swing direction. This affects hardware selection and clearance, so decide it now rather than at install.
- 5
Mark grade changes and obstacles
Note any slope along the fence line, since stepped or raked panels affect both materials and labor. Mark trees, rocks, or utility boxes that fall on or near the line.
- 6
Flag proximity to property lines
If the fence runs close to a property line without a confirmed survey, note that clearly on the drawing so it's addressed before digging, not after.
- 7
Label the drawing and calculate materials
With posts, panels, and gates placed at scale, count materials directly off the drawing rather than off memory — it's faster and catches quantity errors before the order goes in.
Contractor example
Example: a 150-foot backyard fence with two gates
A homeowner wants a 6-foot wood privacy fence around a backyard with a 150-foot total perimeter, a 4-foot walk gate on the side yard, and an 8-foot double gate at the rear for equipment access. The contractor measures the full run, noting an 18-inch grade drop along one 40-foot section.
The layout places corner posts first, adds the two gates at their exact widths, then fills line posts at 8 feet on-center — landing at 17 line posts plus 4 corner/gate posts. The graded section is marked for stepped panels, which the crew prices as additional labor. The client sees the full layout, confirms gate placement, and signs off before materials are ordered.
Why post spacing needs to be drawn, not estimated
It's common to estimate post count by dividing total footage by standard spacing, but that math breaks down at corners, gates, and grade transitions — the places where spacing has to adjust to land cleanly on a fixed point. A drawn layout exposes these adjustments before the crew is on site with pre-cut materials.
This matters most on longer or irregular runs, where a few inches of drift per section can add up to a full extra post — or a gap — by the time you reach the far end.
Common Mistakes
- Estimating post count from total footage without drawing corners and gates first
- Not confirming gate width and swing direction before ordering hardware
- Missing grade changes that require stepped or raked panels
- Placing a fence line close to a property boundary without flagging it
- Using a rough sketch for the material order instead of counting off a scaled drawing
Field Tips
- Walk the full fence line before measuring — grade changes are easier to spot on foot than from a single vantage point.
- Confirm gate width against the equipment or gear that needs to pass through it, not just a standard size.
- Photograph any trees or obstacles directly on the line — they often change post placement once digging starts.
- If the client is unsure about a boundary, don't dig on the assumption it's fine — flag it and confirm first.
Practical Checklist
- Full perimeter measured and drawn at scale
- Corner, end, and gate posts placed first
- Line post spacing calculated from fixed points, not total footage alone
- Gate width and swing direction confirmed and drawn
- Grade changes and obstacles marked
- Property line proximity flagged if unconfirmed
- Materials counted directly from the finished layout
Safety and Limitations
- Confirm property boundaries before installing a fence near a property line — an unconfirmed line can result in a costly reset.
- Call the local utility locate service before digging any post holes.
- Check local fence height and setback rules with the applicable authority before finalizing the layout.
- This layout is a planning and quoting document, not a permit-approved plan.
Frequently Asked Questions
What's a typical post spacing for a wood privacy fence?
8 feet on-center is common for wood privacy fencing, though this varies by panel style, wind exposure, and local practice. Vinyl and ornamental fencing often use closer spacing.
How do I handle a fence line that isn't straight?
Draw each segment and angle as measured in the field rather than approximating a straight run. Irregular lots need corner posts at each direction change, which affects total post count.
Should I include gate hardware in the layout?
At minimum, mark gate width and swing direction. Detailed hardware selection can happen separately, but those two decisions need to be locked in before the layout is finalized.
Summary
A fence layout built for a quote should show the full run, gate placement, post spacing anchored at corners and gates, and any grade changes or obstacles — enough detail to count materials accurately and get clear client approval before digging starts.