A fence that looks straightforward from the street can become surprisingly complicated along a sloping side boundary. The old panels may hide a changing ground profile, a terrace edge or a gate that only just clears the paving. Replacing them gives you a chance to improve that arrangement, provided the new layout is decided before panels are ordered.
Stepped fencing uses level sections set at different heights. Raked fencing follows the incline through sloping sections. Either can look deliberate and work well; the useful comparison is how each meets the actual ground, protects privacy and connects with the features you intend to keep.
Record the whole boundary before choosing a pattern
Ask the fencing contractor to measure the boundary length and changes in level. An overall description such as “gentle slope” does not show a short steep section beside a shed or a hollow hidden beneath a hedge. Those local changes can determine where posts and transitions belong.
The survey or measured drawing should distinguish existing ground from proposed finished ground. If landscaping will raise a path or lower a garden bed, agree those levels with the landscaper first. A fence designed around soil awaiting excavation may end up with an unintended gap once the renovation is finished.
Mark gates, retaining walls, steps, trees, service equipment and any portions of fence being retained. Include the adjoining property’s levels where relevant and accessible by agreement. A boundary fence has two faces, and a neat relationship to your lawn can look very different from the lower side.
For more detail on this part of the project, see Pool Fence Replacement: Glass vs Aluminium, Gates and Installation.
Confirm the boundary separately from the old post line
An existing fence is useful evidence of previous work, but it should not be treated as definitive proof of the legal boundary. If its position is uncertain, resolve that through the appropriate surveying process before designing the replacement. Moving posts to simplify the slope is not a substitute for establishing where the fence belongs.
Keep one agreed drawing for fabrication
Use a dated elevation showing the ground, fence top and gate openings. Record revisions when the landscaping or panel arrangement changes. A contractor, supplier and neighbour working from different sketches can each believe they have approved the same fence while imagining different step positions.
Understand the appearance and gaps of a stepped fence
In a stepped layout, each panel has a horizontal top, followed by a rise or drop at the next section. This can create a clear rhythm beside a terraced garden or a house with strong horizontal features. Where the ground drops beneath a level bottom edge, the opening below the panel becomes larger towards its lower end.
Look at that opening on the drawing rather than judging only the top line. It may be unobtrusive behind planting, or it may be the most visible part of the fence beside a paved path. If containing a pet matters, discuss the actual opening and the proposed closure detail before accepting the layout.
Step frequency changes the result. Several smaller changes can look different from a few large drops, even over the same total fall. However, changing panel lengths and post locations affects fabrication and support requirements. Ask the contractor to show feasible alternatives within the selected system.
At a terrace, a step may align naturally with a change in the garden level. On a continuous lawn slope, that same step might appear arbitrary. Neither relationship is inherently wrong, but an elevation helps you decide whether the fence should echo the landscape or create its own regular pattern.
Understand what a raked layout changes
A raked fence carries the line of the slope through its panels. On a reasonably consistent incline, this can create a more continuous visual edge and avoid the repeated triangular openings associated with level panels over falling ground. The remaining clearance still needs to be designed; following the slope does not mean placing fence material against the soil.
Ask how the particular product creates its rake. A system may accommodate an angle through its connections, require purpose-made panels or need manufacturer-approved preparation of rails and infill. A rigid rectangular panel cannot simply be assumed to follow a hill because another product can.
The LYSAGHT Fencing and Gates Design and Installation Guide for non-cyclonic applications distinguishes stepped and raked installations. It also addresses preparation specific to raked sections and changing post lengths. This supports checking the chosen system’s details rather than treating slope adjustment as a universal feature of metal fencing.
Where the gradient changes sharply, a single straight rake may leave inconsistent clearances. The solution might involve several differently inclined sections, a planned step or a change in panel arrangement. Have those transitions drawn explicitly instead of leaving the installer to improvise around the final post.
Review decorative elements at an angle
A plain infill panel and a decorative topper may not handle a slope in the same way. Consider how lattice, slats, caps or feature openings look when the main fence line inclines. Ask whether the intended combination is supported and whether it needs different components from the standard display panel.
Compare privacy from the places you use
Stand at the outdoor table, kitchen window and garden seating area when reviewing the proposed top line. Privacy depends on sightlines and relative levels, not just the nominal panel height. A fence that feels tall beside a lower path can still allow views from a higher terrace.
Discuss those sightlines with the designer while respecting applicable height and planning controls. Increasing the whole fence may be unnecessary if the real concern is one small seating area. Planting or a separately assessed privacy feature might suit that location, but it should be considered as its own proposal.
Check both standing and seated views where they matter. A stepped top can create a brief low point in a sightline, while a continuous rake can track the landscape more consistently. Conversely, a step placed near a building corner may screen the important view without altering the full boundary.
Do not rely on a supplier’s standard panel height as evidence of permission to install it. Relevant controls, measurement methods and any neighbour arrangements depend on the property and jurisdiction. Have the proposed elevation checked through the appropriate local process.
Resolve the bottom edge without creating a retaining wall
The opening below the fence is often where an attractive concept becomes a maintenance problem. Ask how the detail will tolerate soil movement, mulch, leaf litter and access for gardening. A gap that is clear on installation day can disappear after a garden bed is topped up.
If an infill board or plinth is proposed beneath the panels, identify its purpose and support. Closing a view or limiting a pet’s access is different from holding back soil. Where the two properties have different ground levels, any retaining function needs suitable design and should not be quietly transferred to ordinary fence panels.
LYSAGHT’s non-cyclonic guide requires the relevant fence panels to remain clear of the ground and states that those fences are not retaining walls. Apply the actual selected manufacturer’s requirements to your project; do not use a clearance or detail copied from an unrelated fence system.
- Show the largest and smallest proposed openings beneath each section.
- Identify the final soil, paving and mulch levels on both sides where relevant.
- Describe any bottom infill and whether it has a retaining function.
- Keep drainage and maintenance access visible in the design.
- Confirm how pets will be contained during removal and after completion.
Where the fence forms part of a pool barrier or guards a fall, obtain advice specific to that role before changing heights, openings or nearby landscaping. A general boundary-fence comparison cannot establish compliance for those additional safety functions.
Keep water moving through an appropriate site drainage design
A continuous bottom closure can alter where surface water collects. Before sealing a gap that previously allowed runoff through, ask the relevant contractor to assess the drainage implications. Do not solve an untidy fence edge by creating a dam against a path or redirecting water towards another property.
Your Home’s stormwater guidance identifies terrain and local drainage requirements as factors in site water management. For a sloping boundary, use that as a reason to coordinate the fence with the drainage design, particularly where paving or retaining work is also changing.
Look for leaves and sediment accumulating against the existing fence after rain. Those observations can help the drainage professional understand the site, although they are not a substitute for assessment. Include access to any nearby drain or inspection point in the finished layout.
Design gate transitions as separate moving assemblies
A gate needs more than a pleasing match to adjacent panels. Its leaf must move through an opening while clearing the ground over its operating path. A gate that clears a sloping driveway when closed may meet rising paving as it swings.
A related guide to consider while planning this work is Renovating a House on a Sloping Block: Access, Excavation and Foundations.
Ask the gate fabricator to assess the finished levels, opening direction and required movement. The surrounding fence may rake while the gate takes another form, or a short level section may create a more orderly transition. See the junction drawn from both sides so the change in top and bottom lines is intentional.
Decide whether the existing gate is actually worth retaining. Its width, condition, hinges and support may not suit the new layout. Reusing a leaf while replacing its posts can involve enough modification that a new gate deserves comparison, but that decision needs a complete scope rather than an assumption.
Include everyday passage in the review
Check the route used by bins, bicycles, garden equipment and visitors. A relocated step or post can narrow that route even if the gate opening itself remains unchanged. Where accessibility is important, have the gate and adjoining path considered together by someone familiar with the household’s needs.
Check retained posts and the replacement sequence
New panels do not prove that old posts or footings are suitable. Ask the contractor to assess any supports proposed for reuse, including their condition and suitability for the changed fence. Differences in panel construction, height and exposure can affect that decision.
Account for wind exposure when selecting the system and support arrangement. A sheltered suburban fence and an exposed boundary near a ridge present different design conditions. Obtain project-specific advice where the site falls outside the manufacturer’s standard guidance, without choosing posts or footing dimensions from a photograph.
Before removal, arrange service identification and safe access for the work. Old fence material may also need assessment before disturbance, especially where its composition is uncertain. Agree how garden beds, paving and neighbouring features will be protected while posts are removed or replaced.
Plan temporary separation if pets, children or site security rely on the boundary. Work in sections where appropriate to the contractor’s method, but do not assume the old fence can safely remain partly supported during construction. Let the contractor establish the safe sequence.
Compare quotations using the same finished elevation
Request prices in AUD with GST treatment stated. Give each contractor the same measured layout and ask them to identify departures from it. Otherwise, a quote for standard stepped panels may be compared with one allowing for fabricated raked sections and complete bottom-edge treatment.
Separate the costs of panels, posts, fabrication, removal, difficult access, gate work and reinstatement where practical. The aim is to understand what changes between the two designs. Do not assume stepped work is always cheaper: extra posts, closure details or awkward transitions can change the comparison.
As a hypothetical illustration, suppose a stepped proposal is A$6,800 including GST and needs a separately assessed A$900 bottom-edge treatment. Its comparable total becomes A$7,700. A complete raked proposal at an assumed A$7,500 would then be A$200 lower. These invented figures demonstrate scope comparison only; they are not Australian market prices or a recommendation for either layout.
In that example, both offers would still need equivalent gate work, disposal and ground reinstatement before their totals were meaningful. Ask for uncertain items to be identified, with an agreed process for changes if removal reveals conditions that could not reasonably be assessed earlier.
Inspect the transitions before signing off
Walk the entire fence from each accessible side at completion. Compare the top line, step positions and ground openings with the agreed elevation. Pay particular attention to the first and last panels, changes in gradient and junctions with retained fencing, where a small mismatch can be conspicuous.
Have gates demonstrated through their intended movement and check the surrounding path. Confirm that drainage access, caps and specified finishing details are complete. Record any landscaping still outstanding so later soil or paving work does not unintentionally cover the fence’s required clearance.
Choose stepped fencing when its level sections and transitions suit the landscape and the bottom openings have a workable detail. Choose raked fencing when the selected system can follow the measured slope and its fabrication produces the appearance you want. A carefully resolved boundary can use both, with each change answering a real feature of the block.