Community contributors: may, Armoo, QXG
Summary
Relocatable secondary dwellings (granny flats) are subject to specific building code standards that differ from traditional fixed extensions. Under state regulations, removable houses generally require stump foundations rather than poured concrete slabs to maintain a minimum 60cm sub-floor clearance for moisture inspection and pest management. Installing a relocatable dwelling on a permanent concrete slab risks reclassifying the project as a fixed building extension, requiring full council approval and distinct structural certification.
Key Points
Why it matters: Distinguishing between relocatable secondary dwellings and fixed extensions ensures full building compliance and avoids council permit complications.
Relocatable secondary dwellings (granny flats) are subject to specific building code standards that differ from traditional fixed extensions. Under state regulations, removable houses generally require stump foundations rather than poured concrete slabs to maintain a minimum 60cm sub-floor clearance for moisture inspection and pest management. Installing a relocatable dwelling on a permanent concrete slab risks reclassifying the project as a fixed building extension, requiring full council approval and distinct structural certification.
Practical Takeaway
Use this note as a practical prompt before making decisions. Check the rules in your state, keep written records, and seek qualified advice where needed.
Disclaimer
This note is edited by APOA from community discussions with private details removed where possible. It is general information only and is not legal, tax, financial, or property management advice.