The suburb of Wanneroo mixes established homes, semi-rural and market-garden land, and newer housing estates. That variety shows up in retaining jobs, from shed pads on larger blocks to boundary walls on new lots. Retaining Walls Perth connects Wanneroo homeowners with a local, insured specialist for a free quote.
Call 0485 557 649 for a free, no-obligation quote from a local, insured Perth retaining wall specialist.
Typical Wanneroo jobs
- Levelling larger rural-residential lots for sheds, workshops and driveways
- Boundary walls on new estate lots
- Back-yard terracing on sloping sandy blocks
- Extending or adding to existing walls
- Replacing failed timber walls
Watch out for tiered and add-on walls
The City of Wanneroo’s rules catch two common situations. First, adding height to an existing retaining wall needs a building permit. Second, tiered walls are assessed on total height: two 400 mm walls stepped up a slope add to 800 mm, which exceeds 500 mm and needs a permit. If you’re planning terraces, talk it through with your specialist before you design it.
Planning approval
In the Residential zone, planning approval is needed where walls don’t comply with the R-Codes. For walls in any other zone (relevant on rural and special-rural land around Wanneroo) the City says planning approval is required. Planning approval must come before the building permit. If works were done without approval, the City has a separate unauthorised works process.
Ground and water
Ground and groundwater conditions vary across Wanneroo, so your specialist should check your lot. Drainage design behind any wall matters, and the R-Codes generally expect stormwater to be contained on site.
Permits in Wanneroo: City of Wanneroo
The City of Wanneroo requires a building permit where a wall exceeds 500 mm, is an addition to an existing wall, or tiered walls exceed 500 mm in total. Planning approval is needed in the Residential zone where walls don’t comply with the R-Codes, and must be obtained before the building permit is issued. The R-Codes also limit fill within 1 m of a boundary to 0.5 m above natural ground unless a local development plan says otherwise, so check any estate LDP. Full detail in our WA permit guide.
What it might cost
Published Perth guides put typical installed prices as of 2026 at about $260 to $630 per lineal metre for concrete sleeper walls and about $420 to $680 per square metre of face for limestone, before drainage, engineering and permits. These are typical ranges, not quotes; see the Perth cost guide. Your Wanneroo specialist will price your actual site.
Wanneroo retaining wall questions
I’m on a rural lot. Is it different?
Yes. The City says retaining walls in zones other than Residential need planning approval. Check your zoning with the City.
Can the specialist handle the approvals?
Many retaining wall specialists arrange the engineer and permit application. Ask when you get your quote.
Get a free Wanneroo quote
Retaining Walls Perth is a referral service: we connect Wanneroo homeowners with a local, insured retaining wall specialist, who quotes and contracts with you directly. Call 0485 557 649, or see other areas we serve.
Sources
- Landscapes WA, "Retaining wall cost in Perth" (12 Sep 2026)
- What's The Damage, "Retaining Wall Cost Perth 2026"
- Luke's Landscaping Co., "Limestone vs concrete retaining walls in Perth" (2026)
- The Quote Yard, "Concrete Sleeper Retaining Walls WA 2026"
- Building Regulations 2012 (WA) Sch 4 cl 2 item 6
- R-Codes Vol 1 cl 5.3.7 & Table 4 (10 Apr 2026)
- Building Act 2011 (WA) s89
- Legal Aid WA, dividing fences and boundary issues
- City of Wanneroo
- Soil context: Australian Geomechanics Society, Residential footings – Perth metropolitan area
- Luke's Landscaping Co. (24 Jul 2026), Perth soils by suburb