Most backyard projects never go anywhere near a council. New garden beds, turf, irrigation, planting, mulching, a bit of levelling. Nobody applies for permission to plant a hedge, and nobody should have to.
Then there is the other category. The one where someone is three weeks into a project, a neighbour asks a polite question over the fence, and the whole thing stops while everyone works out whether it should have been approved before it started.
The frustrating part is that the line between the two is not where most people assume it is. It has very little to do with how big the job feels or what it cost, and quite a lot to do with technical details that never come up in a quote.
How the system actually works in NSW
There are three pathways, and knowing which one you are on is most of the battle.
Exempt development is minor work that needs no approval at all, provided it meets every condition attached to it. This covers a decent share of ordinary landscaping.
Complying development is work that still needs a tick, but not a full assessment. If the project meets a defined set of standards, a certifier can issue a Complying Development Certificate without the council assessing the merits of it.
A development application is the full process. It goes to council, it gets assessed properly, neighbours can be notified, and it takes considerably longer.
Most homeowners assume they are on the first pathway and never check. Usually they are right. The trouble comes from the word every in that first definition, because exempt status is conditional, and missing one condition moves the job to a different pathway entirely.
The conditions nobody expects
This is where the surprises live. Take earthworks and retaining walls, which turn up in a large share of Sydney landscaping jobs. Under the NSW exempt development rules, work of that kind has to sit at least 40 metres from a body of natural water. It cannot redirect the flow of surface or ground water, or wash sediment onto the property next door. Any retaining wall has to be separated from another retaining wall on the site by at least two metres horizontally. It cannot be carried out on a heritage item, and if the property sits in a heritage conservation area, it has to be in the rear yard.
Read through that list and you can see how a perfectly reasonable job falls out of the exempt category without anyone doing anything wrong. Two walls stepping down a slope, a metre and a half apart, is a completely normal way to handle a fall in the land. It is also two walls closer together than the rule allows.
The same pattern shows up across the categories. Decks, pool surrounds, sheds, cabanas and paving all have their own conditions, and they are conditions rather than suggestions. Meet all of them and you need nothing. Miss one and you are on a different pathway.
Where landscaping projects usually trip over it
A few jobs come up again and again.
Retaining walls are the most common by a wide margin, because sloping blocks are everywhere in Sydney and almost every serious garden on one involves holding soil back somehow. Height matters, proximity to boundaries matters, and what the wall is holding up matters.
Earthworks catch people out for a different reason. Cutting into a slope or building a pad changes where water goes, and drainage is one of the few things in this space that reliably generates a dispute with a neighbour. If your project sends water somewhere it was not going before, that is a problem regardless of what any certificate says.
Structures are the obvious one. Decks, pergolas, studios, cabanas and pool houses all have size and height thresholds, and people frequently discover theirs after the frame is up.
Tree removal is council territory and it varies from one local government area to the next. A tree that can be removed without a thought in one suburb needs a permit two suburbs over. Significant trees, heritage listings and local tree preservation orders all come into it.
And swimming pools sit in their own world, with fencing and certification requirements that exist independently of the landscaping around them.
Why the landscaper is rarely the one to ask
This is not a criticism of the trade. It is a description of where the expertise sits.
A good landscaper knows construction. They know soil, drainage, levels, materials, plant selection and how to build something that will still look right in ten years. Plenty of them have a solid working sense of what usually needs approval, because they have been doing this long enough to have seen it go wrong.
What they are not is a planner. They do not have the relevant local environmental plan open, they do not know whether your particular lot carries a heritage overlay or a flood or bushfire constraint, and they are not in a position to give you a definitive answer on an approval pathway.
So the sequence most people follow, which is to search for “residential landscaping near me”, get three quotes and pick one, works perfectly well for the majority of jobs and leaves a gap on the ones where approval is in play. The landscaper prices the construction. Nobody prices the approval, because nobody established whether one was needed.
The better version costs almost nothing. Describe the full scope to the landscaper at the quoting stage, including the parts you think are minor, and ask directly whether anything in it might need approval. An experienced operator will tell you honestly when something is outside their lane, and that answer is worth more than a confident guess.
When it is worth getting proper advice
For a straightforward job on an unremarkable block, you will not need anyone else involved.
The picture changes if your property carries any of the complications. A heritage listing or a conservation area. A flood or bushfire overlay. A steep site. Anything near a waterway or foreshore. An easement running through the yard. Battleaxe blocks and unusual lot shapes. Any of those turn a simple question into one with several parts to it.
It also changes when the project is substantial. Once you are into significant level changes, multiple structures, or something that alters drainage across a boundary, the cost of getting it wrong climbs quickly.
That is the point where professional town planning advice earns its fee, because a planner reads the instruments that apply to your specific address and tells you which pathway you are on before anything is built. That answer shapes the design, the budget and the timeline, and it is considerably cheaper to have at the sketch stage than after a stop work order.
The other thing a planner does, which people underestimate, is find the version of the project that stays on the easier pathway. Frequently there is one. A design that steps differently, sits further from a boundary or handles drainage another way can keep a job exempt when the original version would have needed a full application. That is a design conversation, and it only works if it happens early.
What going wrong actually costs
The direct penalty is the least of it.
Work that should have been approved can be subject to an order to stop, modify or remove it, and unapproved structures have a habit of surfacing later at the worst possible time. They turn up in a building inspection when you sell. They complicate insurance claims. They come up when the next owner tries to get something else approved and the council looks at the site properly.
Then there is the rebuild. Retrospective approval is sometimes possible and it is not guaranteed, and the process is slower and more expensive than doing it properly in the first place. If approval is refused, the work comes out.
And neighbours matter more than people expect. Most enforcement starts with a complaint, and drainage is the single most reliable source of them. A wall that sends water into the yard next door will generate a phone call eventually.
A sensible order to do things in
Work out the scope first, including the bits that seem minor, because the minor bits are often the ones carrying the conditions.
Check the property for complications before you design anything. Heritage, flood, bushfire, easements, tree controls. Most of this is available through council and the planning portal and it takes an afternoon.
Get the pathway confirmed if there is any doubt at all, and get it confirmed before the design is locked in rather than after.
Then quote the construction, with a scope that everyone has seen and agreed on.
Done in that order, approval is a short step near the beginning. Done in reverse, which is how it usually happens, it becomes the thing that stops the job halfway through with materials already on site.
Disclaimer: The information provided in this article is for general informational and educational purposes only and does not constitute professional planning, legal, or construction advice. Approval requirements, exempt development conditions, and local regulations vary by property and council area. Readers should consult qualified town planners or their local council for guidance specific to their project and address. The author and publisher disclaim all liability for project delays, fines, or financial losses arising from reliance on this content. Always confirm current regulations and obtain necessary approvals before commencing any work.
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