Patios Thornlie

Thornlie Patio & Building Permit

Thornlie falls within the City of Gosnells, which requires a building permit for most patio, pergola, carport, shade sail, and shed projects before work can begin. As a general guide, a permit is generally needed if the structure is attached to the home, exceeds 10m² in area or 2.4m in height, or involves posts, roofing, or other load-bearing elements — check the City of Gosnells’s own guidance below to confirm your specific project.

• Do I Need a Permit? – City of Gosnells
• Patio Information Sheet (Steel) – City of Gosnells (PDF)

Bushfire-Prone Land in Gosnells

Gosnells has extensive natural bushland — including the 600-hectare Ellis Brook Valley reserve and bushland along the Canning and Southern Rivers — and parts of the City are declared bushfire-prone, which can trigger a BAL assessment for a new patio or carport. Worth a quick check against the current bushfire-prone map if you’re near one of these reserves.

How Patio Factory Can Help

We handle the building permit process end-to-end for Thornlie homeowners — preparing the drawings and documentation the council requires, checking any local overlays against your specific block, and liaising directly with council so you’re not the one chasing forms.

• Design & Documentation: Required drawings and paperwork prepared to council’s specification.
• Local Overlay Check: We confirm upfront whether heritage, bushfire, or other local rules affect your property.
• Council Liaison: We submit and track the application on your behalf.

Planning a patio in Thornlie? Get a free, no-obligation design consultation — we’ll flag anything council-specific early, not after you’ve committed to a design.

Unit 6 117 Kurnall Rd, Welshpool WA 6106