Fence height in NSW is not a free-for-all. How tall you can go depends on where the fence sits on the block, what it is made of, and which council area you are in. Get it right and most fences go up without any council paperwork at all. Get it wrong and you can be asked to take it down. Here is how the rules actually work.
Why height matters
Height drives how well a fence does its job. A taller fence gives more privacy and a stronger deterrent to intruders and casual trespassers. But it also affects your neighbours, sight lines at driveways, and the look of the street, which is exactly why there are limits.
What you can build without approval
A lot of residential fencing in NSW is allowed as exempt development, meaning no development application, as long as it meets the standards set out on the NSW Planning Portal fences page. In the common residential zones, the key limits are:
- Side and rear boundaries must not be higher than 1.8 metres, or 1.2 metres if the fence is masonry.
- Front boundaries, along a primary or secondary road, are generally limited to 1.2 metres.
- Corner blocks have an extra catch: a fence in the setback of a secondary road usually needs to be at least 20 percent transparent above 400 millimetres, so drivers can see around the corner.
These are the statewide standards. Your council can differ, so it is always worth a quick check with them before you order materials.
Where the rules tighten up
Pool fencing
If there is a swimming pool on the property, separate and stricter safety rules apply on top of the general height limits. Pool barriers have their own minimum heights, gate requirements and non-climbable zones under the NSW swimming pool laws. That is a topic in its own right, so treat pool fencing as its own job rather than part of a boundary fence.
Heritage and conservation areas
If the property is a heritage item or sits in a Heritage Conservation Area, the exempt pathway often falls away. Councils in these areas frequently have specific rules on the style, materials and colour of fencing to keep the character of the streetscape. Check with council first.
Commercial and industrial sites
Business and industrial zones have more flexibility on height, but they carry their own conditions, including transparency where a boundary faces a residential zone or a road, and restrictions on barbed and electric fencing. If you are fencing a leased or commercial site, that is worth reading up on separately.
Who pays: the Dividing Fences Act
Height often becomes a neighbour question, and money follows close behind. Cost sharing for a boundary fence is covered by the Dividing Fences Act 1991. The general rule is that adjoining owners share the cost of a sufficient dividing fence equally.
If you want something above that standard, a taller or heavier security fence than the situation calls for, you are usually up for the difference. If you and your neighbour cannot agree, either party can go to mediation or, after the required notice, to NCAT for a decision. A friendly chat over the back fence before you book anything saves a lot of grief.
The short version
Most residential fences up to 1.8 metres on the side and rear, and 1.2 metres at the front, are fine without approval. Corners, pools, heritage areas and commercial sites are where you need to stop and check. When you are unsure whether your plan clears the exempt standards, it is far cheaper to ask before the first post goes in than to rebuild afterwards.