Sliding vs Swing Gates on Tight Sydney Frontages

Most people start choosing a gate by looking at photos. On a roomy suburban block, that works. On a tight Sydney frontage, it can lead you astray, because the site often rules one option out before style comes into it. This guide walks through the questions that decide it.

Question 1: Can the gate open outwards?

No. Under the NSW exempt development rules for fences, gates must not open outwards. Any structure on or over public land, such as the footpath, needs approval from council or Transport for NSW. So whatever you choose has to open into your property or slide along your boundary.

That one rule decides a lot of terrace and semi frontages straight away. If your car space finishes a metre from the front door, there may be no room for a swing gate to open inwards.

Question 2: How long is the driveway behind the gate?

A swing gate needs the full width of each leaf as clear space behind the gate. A pair of 1.8 metre leaves needs about 1.8 metres of driveway behind the gate before a parked car or front step gets in the way. A single leaf on a 3.6 metre opening needs 3.6 metres.

If your driveway is short, measure from the gate line to the nearest obstruction. If it is shorter than the leaf width, swing is out unless you split the gate into more leaves or use a bi-fold design.

Question 3: How much fence line is beside the opening?

A sliding gate needs side run, a clear stretch of fence roughly as long as the opening, plus space for the motor. On a narrow lot, that run is often the problem. Common obstacles include:

• the front window or bay of the house
• a meter box or letterbox
• a neighbour's driveway or side boundary
• a large tree or garden bed

If you have side run on one side but not much of it, a telescopic sliding gate, where two panels slide past each other, can cut the space needed. It is more complex and costs more, but can rescue a tight site.

Question 4: Does the ground rise behind the gate?

This one catches a lot of harbour and beaches homes. If the driveway climbs from the street, a swing gate's leaf will hit the ground partway through its arc. Rising hinges and stepped bottom rails can deal with a small rise, but on steep driveways in places like Mosman, Bronte, Fairlight or the Port Hacking suburbs, sliding is usually the only practical answer.

A slider still needs a level strip for the track across the opening. Where the street end of the driveway is uneven, a cantilever gate, which hangs from rollers and does not touch the ground across the opening, can work if there is enough side run.

Question 5: How exposed is the site to wind?

A large solid gate behaves like a sail. A swing gate leaf caught by a gust puts heavy load on the motor and hinges. A sliding gate is pushed against its guides. On exposed coastal or ridge sites, a slatted design with gaps reduces the load. Our page on aluminium and slat gates covers the trade-offs.

A quick comparison

What about pedestrians and children?

Both types need safety measures. A swing gate sweeps a large area of driveway. A sliding gate can create a pinch point where it meets the post. The safety standard for electric gate drives in Australia and New Zealand is AS/NZS 60335.2.103. Ask your installer how they will handle obstruction detection, beams and a manual release for the gate you choose.

Heritage streets

If your home is in a heritage conservation area, which is common in the Eastern Suburbs, Inner West and parts of the North Shore, a fence or gate along the road boundary cannot be exempt development. Council may have a view on which gate type suits the streetscape. Read our article on gates in heritage conservation areas before settling on a design.

The short version

• No room behind the gate: lean towards sliding.
• No room beside the gate: lean towards swing.
• Driveway rises from the street: lean towards sliding.
• Plenty of room and level ground: choose on looks and budget.

When you are ready, see our pages on automatic sliding gates and automatic swing gates, then send us your details. We pass your enquiry to an independent local installer who will measure the site and quote directly.