FAQS

Once a deck is more than 500mm above natural ground level, it generally needs closer review. Raised decks may involve additional requirements such as: • Structural design and engineering • Stairs and balustrades • Privacy and overlooking considerations • Boundary setback requirements • Bushfire requirements in BAL affected areas • Building permit documentation A raised deck is not automatically an issue, but it does need to be properly planned and documented.

In many cases, yes. Pergolas, patios, verandahs, shade structures and alfresco roofs can trigger building permit requirements depending on their size, height, roof type, attachment to the home, boundary setbacks and structural design. The City of Busselton and the Shire of Augusta Margaret River both treat planning approval and building permits as separate matters. Even where planning approval may not be required, a building permit may still be needed. We will guide you through what is likely to be required once we understand your property, the proposed structure and the local government area your home falls within.

Yes. Size and height thresholds can affect whether a building permit is required. As a broad guide, some small freestanding Class 10a structures may not require a building permit where they are no more than 10m² in floor area, no more than 2.4m high and are not located in wind region C or D. Pergolas associated with a dwelling may be treated differently. A pergola may not require a building permit where it is no more than 2.4m high, covers no more than 20m² and is not located in wind region C or D. These thresholds do not automatically mean approval is not required. Planning approval and building permits are separate checks, and the site still needs to be reviewed properly.

A pergola is generally an open-framed structure, often with an open roof, water permeable cover or operable louvres. A patio or verandah is generally an unenclosed structure with a water impermeable roof, such as metal roofing or similar sheeting. This distinction matters because roof type, attachment to the home, height, drainage, setbacks and structural design can all affect approval requirements.

Often, yes. Freestanding structures may fall within certain exemption thresholds if they are small enough and meet the relevant height, size and location requirements. Attached patios, verandahs, alfresco roofs and pergolas connected to the home usually need closer review because they can affect the existing structure, roof loads, stormwater, tie-downs, fire separation and overall building compliance. If a structure is attached to the home, Cape Build treats approvals and structural documentation as part of the planning process rather than assuming it is exempt.

Planning approval looks at whether the proposed work is suitable for the site. This may include setbacks, streetscape, privacy, overlooking, building height, open space, zoning, special control areas and local planning requirements. A building permit looks at whether the structure is designed and documented to meet the relevant building standards. This may include structural adequacy, footings, posts, beams, spans, fixings, tie-downs, balustrades, stairs, drainage and compliance with the Building Code of Australia. Some projects need both. Some may only need one. Some minor works may be exempt, but this should always be checked before building.

Dunsborough, Yallingup and Eagle Bay generally fall within the City of Busselton. The City of Busselton's planning information confirms that construction, alteration or extension of a building or structure may require development approval unless an exemption applies. Its exempt development policy also notes that some works may be exempt from development approval, but other approvals, including a building permit, may still be required. In simple terms: even if a deck, pergola or patio looks straightforward, we still check the site conditions, zoning, setbacks and permit requirements before confirming the build pathway.

Margaret River and Cowaramup generally fall within the Shire of Augusta Margaret River. The Shire advises that planning approval may be required even where a building permit is not required. For small freestanding structures, its building permit guidance refers to floor area and height thresholds, including 10m² for many small structures and up to 20m² for pergolas. Because the Shire's guidance includes specific conditions around size, height, setbacks and structure type, Cape Build confirms the approval requirements before finalising the scope.

Possibly. Retaining, filling or changing ground levels can affect whether approvals are required, especially where the work is more than 500mm high, close to a boundary, connected to another structure, or supporting a deck, patio or outdoor living area. Even smaller retaining works should be checked if they form part of a larger build. Cape Build reviews retaining, drainage, access and levels as part of the early planning process so the project is properly scoped.

They can. Properties in areas such as Dunsborough, Old Dunsborough, Quindalup, Yallingup, Eagle Bay, Margaret River and nearby coastal or rural residential locations may be affected by local planning controls, special character considerations, setbacks, bushfire requirements, environmental constraints or site-specific conditions. This is why a site-specific review matters. The same deck or pergola may be simple on one property and more involved on another.

Often, yes. Engineering may be required where the structure is raised, roofed, attached to the home, exposed to wind, supporting loads, built near boundaries, or forming part of a larger outdoor living area. Engineering gives certainty around footings, posts, beams, spans, fixings and tie-downs. It also helps support the building permit process where required.

Yes. Cape Build can help identify the likely approval pathway and coordinate the required information for your project. Depending on the scope, this may include: • Site review • Concept and scope clarification • Structural design or engineering • Building surveyor input • Planning advice • Building permit documentation • Coordination with the relevant local government The aim is simple: confirm what is required early, avoid unnecessary surprises and make sure the project is built properly.

Approval timeframes depend on the local government, the type of application and whether referrals, neighbour consultation or additional information are required. Planning applications can take longer than simple building permit applications, particularly where setbacks, special controls, bushfire requirements, neighbour consultation or discretionary planning matters are involved. For this reason, we recommend allowing time for approvals during the early planning stage rather than trying to rush them once you are ready to build.

Building without the right approval can create serious problems. You may be required to lodge retrospective applications, provide engineering or certification, alter the structure, or in some cases remove non-compliant work. It can also create issues when selling, refinancing or insuring the property. Cape Build's approach is to deal with these requirements properly before work starts so the project is clean, compliant and easier to manage.

Yes. Photos, sketches, mood boards and existing plans are all useful starting points. We can help turn your ideas into a practical, buildable scope, including layout, material choices, structural considerations and budget alignment. Where required, we can also assist with documentation needed for pricing, engineering and approvals.

The cost depends on the size, access, materials, structure, site preparation, design detail and whether approvals, engineering or additional trades are required. A simple ground-level deck will cost less than a raised deck, roofed pergola, alfresco extension or complete outdoor entertaining area with screening, stairs, seating and integrated features. Cape Build prices properly rather than guessing from a broad square metre rate. This gives you a clearer understanding of what is included and helps reduce surprises later.

Yes. Cape Build builds timber and composite decks depending on the project, budget, design intent and maintenance expectations. Timber offers natural warmth and character that works beautifully in the South West. Composite decking can be a strong option for clients wanting lower ongoing maintenance and consistent performance. We will walk you through the pros and cons so you can choose the right material for your home.

Cape Build is based in Dunsborough and works across the South West, including Busselton, Vasse, Yallingup, Eagle Bay, Cowaramup and Margaret River. For projects outside these areas, we assess suitability based on the scope, location and timing.

The first step is to send through an enquiry with your project location, rough budget, photos, plans or inspiration images, and a short description of what you would like to achieve. From there, we will review the details and let you know the best next step. If the project is a good fit, we can arrange a site visit and begin working through scope, pricing, materials and approval requirements.