The Fencing Measurements That Still Catch Out Good Tradies
At New Style Fencing, we’ve supplied materials to thousands of Melbourne jobs. Most measurement mistakes happen before the first post hole is dug. They cost more time than any delivery delay ever will.
Small errors with spacing, slope or boundaries lead to:
- Re-cutting rails
-
Shifting posts
- Reordering panels
- Client disputes about where the fence sits
These are the most common causes and the checks that stop them.
Check the Ground Before You Mark Out
A slope that looks flat can still throw a fence line off. A fall of 25 millimetres across a short run will show up when the panels don’t meet at the top.
Before marking out:
- Run a string line between the start and end points
- Use a level to measure the fall
- Measure from both ends, not just one
- Decide early if you will step the panels or rake them
Get Post Spacing Right
Colorbond:
- Panels are fixed width
- Measure from post centre to post centre
- Add the panel width plus post size for total spacing
Slat systems:
- Width varies with profile and gap
- Confirm spacing from the manufacturer’s sheet
- Always mark the first two posts and double-check the total run
A few millimetres off at each post can add up to a full panel by the end of a long boundary.
Leave Room for Gates
Gates cause problems even for experienced installers. They look right on the plan but the hinge and latch clearance change what’s needed on site.
Checklist:
- Allow 30 to 40 mm swing clearance for a standard gate
- Add extra clearance if the ground slopes
- Confirm the gate frame width before concreting
- Check swing direction before you hang the gate
Use the Right Reference Point
Straight fences can still end up in the wrong place. Old fences drift over time. Boundary pegs don’t.
To avoid boundary mistakes:
- Find or confirm survey pegs before marking out
- Never assume the old fence was on the line
- If pegs are missing, ask for the survey plan
- Check both sides of the block
- Measure diagonals to make sure corners are square
A straight fence in the wrong spot still leads to an argument.
Match Measurements to the Plan
A perfect measurement doesn’t help if it doesn’t suit the system being installed.
Common mismatches:
| Issue | Cause | Fix |
|---|---|---|
| Total run doesn’t divide into panels | Wrong post spacing | Check panel width and plan total run before ordering |
| Gate opening too small | Hinge and latch not included in layout | Allow for hardware gaps |
| Rails short on raked ground | Slope not measured at start | Measure rise and fall between each post |
| Plan based on timber system | Steel or aluminium used instead | Confirm spec with supplier before cutting |
Before you start cutting:
- Check that your total length divides into the number of panels
- Confirm post sizes match the plan
- Adjust post spacing before digging if needed
Know the Fence Height Limits in Victoria
Fence heights in Victoria are set under the Building Regulations 2018 and local council planning schemes.
These are general limits for most standard sites, but always confirm with the relevant council before quoting or building.
| Location | Maximum Height | Permit Required? | Notes |
|---|---|---|---|
| Side and rear boundaries | Up to 2.0 metres | No, if not within 3 metres of a street alignment | Over 2.0 metres needs a building permit and council consent |
| Front fences (near street alignment) | Up to 1.5 metres | No (most cases) | Masonry fences over 1.2 m or lightweight fences over 1.5 m may need a permit |
| Front fences (declared or main roads) | Up to 2.0 metres | Often no permit | Check the road classification with council |
| Corner blocks | 1.0 metre within 9 metres of an intersection | Yes, if higher | Height limited for visibility and safety |
| Pool fences | Minimum 1.2 metres | Yes – must comply with AS 1926.1–2012 | Must have self-closing, self-latching gates that open away from the pool |
Additional facts:
- Fence height is measured from natural ground level on the lower side
- Retaining walls count toward the total fence height
- Retaining walls over 1.0 metre high, or near a boundary, may need a separate building permit
When in doubt, quote to the compliant height first. It’s easier to add a lattice top later than to remove an over-height fence.
Quick Checks That Prevent Rework
Jobs that go smoothly usually start with ten minutes of checks.
Before you dig:
- Confirm boundary pegs or survey plans
- Measure and note slope along the run
- Allow gate and hinge clearance
- Check total run vs. panel count and width
- Verify height limits for the property
- Square and level posts before concreting
A short check list saves a long fix list.
Talk to Your Supplier Before You Cut
If your layout doesn’t divide evenly or the slope means odd panel lengths, call New Style Fencing before you start cutting. We can:
- Check spacing calculations
- Cut rails or posts to length
- Suggest layout options to suit the ground
It’s faster to fix a drawing than to drill another post hole.
Keeping your Fencing Customers Happy
That’s how you keep jobs tidy, clients happy and materials used once.
Need help checking panel counts or spacing before ordering? Call New Style Fencing. We’ll help confirm your layout before the truck leaves Rowville for your site.