Granny Flats

As per the applicable Development Control Plans (DCP), Local Environmental Plans (LEP), and Housing Code requirements,
the below information may serve as a general guide relevant to your specific circumstances.

Lot Size
(m²)
Minimum
Frontage (m)
Site
Coverage (%)
Total Floor Area Incl.
House (m²)
Side
Setback (m)
Rear
Setback (m)
Landscaped
Area (%)
450–600m² 12m 50% 330m² 0.9m 3m 20%
600–900m² 12m 50% 380m² 0.9m 3m 25%
900–1500m² 15m 40% 430m² 1.5m 5m 35%
>1500m² 18m 30% 430m² 2.5m 10m 45%
  • Battle-axe properties must provide an access handle with a minimum width of 3m.
  • Properties situated within heritage, bushfire-prone, or flood-affected areas may be subject to additional planning controls and approvals.
  • A granny flat is generally not required to include dedicated off-street parking.
  • Each lot is limited to a maximum of one granny flat.
  • A minimum private open space of 24m² is required, including a minimum width of 4m.
  • The maximum permitted floor area for a granny flat is 60m².
Lot size (m²) 450-600m²
Minimum Frontage (m) 12m
Site Coverage (%) 50%
Total Floor Area incl. House (m²) 330m²
Side Setback (m) 0.9m
Rear Setback (m) 3m
Landscaped Area (%) 20%
Lot size (m²) 600-900m²
Minimum Frontage (m) 12m
Site Coverage (%) 50%
Total Floor Area incl. House (m²) 380m²
Side Setback (m) 0.9m
Rear Setback (m) 3m
Landscaped Area (%) 25%
Lot size (m²) 900-1500m²
Minimum Frontage (m) 15m
Site Coverage (%) 40%
Total Floor Area incl. House (m²) 430m²
Side Setback (m) 1.5m
Rear Setback (m) 5m
Landscaped Area (%) 35%
Lot size (m²) 1500m²+
Minimum Frontage (m) 18m
Site Coverage (%) 30%
Total Floor Area incl. House (m²) 430m²
Side Setback (m) 2.5m
Rear Setback (m) 10m
Landscaped Area (%) 45%
  • Battle-axe properties must provide an access handle with a minimum width of 3m.
  • Properties situated within heritage, bushfire-prone, or flood-affected areas may be subject to additional planning controls and approvals.
  • A granny flat is generally not required to include dedicated off-street parking.
  • Each lot is limited to a maximum of one granny flat.
  • A minimum private open space of 24m² is required, including a minimum width of 4m.
  • The maximum permitted floor area for a granny flat is 60m².
Granny-flates

Choose Your Building Journey

Option One

TrinityCon Fast Track

Best for investors and homeowners wanting a faster, more efficient building experience without sacrificing quality.

Get Started

  • Design Efficiency: Proceed with design to reduce main contractor design costs.
  • Smart Layouts: Custom floorplans created to maximise space, functionality, and value while slashing unnecessary build time.
  • All-in-One Solution: Don’t have plans or a designer? Access our complete Design & Construct service from concept to handover.
  • Streamlined Selections: Guided color selections, curated mood boards, and milestone updates.
  • The Outcome: Built to keep your project moving efficiently while delivering the premium standard TrinityCon is known for.

Option Two

TrinityCon Customised

Best for homeowners wanting a more personalised experience while maintaining practical value and budget-conscious outcomes.

Get Started

  • Hands-On Design: Work directly alongside the TrinityCon team during design development.
  • Tailored to You: Create a granny flat perfectly tailored to your lifestyle, property, and vision.
  • In-Person Consultations: Attend dedicated, in-person color selection consultations.
  • Proactive Communication: Receive consistent, weekly updates from your dedicated Project Manager.
  • Site Walkthroughs: Participate in scheduled site walkthroughs during construction to stay connected to every stage.

Option Three

TrinityCon Concierge

Best for clients seeking a fully immersive, high-end building journey with maximum involvement and premium attention to detail.

Get Started

  • Immersive Collaboration: Work closely with the TrinityCon team from concept to completion to refine every single detail.
  • Onsite Design: Premium onsite design consultations to map out your vision where it matters most.
  • Extended Selections: Enjoy extended interior and finishes selection appointments.
  • Trade Interaction: Direct interaction with selected trades to ensure the finer details reflect your exact vision.
  • Ultimate Transparency: Multiple guided construction walkthroughs built around collaboration, craftsmanship, and final handover.

Get a personalised cost
estimate for your granny
flat today.

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