One-Bedroom Granny Flat — Granny Flats | Building Solution Australia
One-Bedroom Granny Flat
The most popular secondary dwelling configuration in Australia
Concept Plan — this floor plan is for illustrative purposes only. It does not represent an approved design. Subject to design development, engineering, and planning approval.
A one-bedroom secondary dwelling with separate bedroom, open-plan living and kitchen, and full bathroom. The most widely approved and built granny flat configuration in Australia — positioned as a backyard home for rental investment, ageing-in-place, or multi-generational family living. No garage included — a secondary dwelling on a residential lot.
Key Features
- Fast approval pathway — complying development in many NSW councils
- Efficient use of space — separate bedroom with built-in robe
- Modern open-plan living and kitchen
- Separate private entry from principal dwelling
- Low maintenance exterior — Colorbond and fibre cement
- Australian compliant design — NCC 2022 and Housing SEPP
- Energy-efficient — 7-star NatHERS minimum
Floor Plan
Concept Plan
Separate bedroom with built-in robe, open-plan living/dining/kitchen, full bathroom, laundry, covered entry porch. No garage or internal car access. Dimensions indicative only.
Concept Plan — indicative layout only, subject to design development and approval
Concept Plan — indicative layout only, subject to design development and approval
Internal Layout
Separate bedroom with BIR. Open-plan living/dining/kitchen. Full bathroom with bath or shower option. Separate laundry. Covered entry porch. No internal garage or car access.
External Design Options
- Colorbond steel cladding — standard range
- Fibre cement sheet cladding — painted finish
- Timber-look composite cladding — premium option
- Brick veneer — where required by council
Construction Method
LGS framing with factory-prefabricated wall panels, modular bathroom pod, and prefabricated kitchen unit. Site-assembled on concrete slab.
Product Specifications
Standard Finishes
- Painted fibre cement cladding
- Colorbond roof — standard range
- Stone benchtop — kitchen
- Ceramic floor tiles — wet areas
- Carpet — bedroom and living
- Painted plasterboard — internal walls
Upgrade Packages
Premium Finishes
Engineered timber flooring to living areas, semi-frameless shower screen, upgraded tapware, stone benchtops throughout
Outdoor Living
Extended covered alfresco area with timber-look decking and privacy screen
Accessibility Package
Wider doorways, step-free entry, accessible bathroom with roll-in shower and grab rails to AS 1428.1
Solar and Battery Ready
Roof structure, electrical rough-in, and switchboard provision for solar PV and battery storage
Typical Applications
Approval Considerations
One-bedroom secondary dwellings up to 60m² are approvable as complying development in many NSW councils under the Housing SEPP. Larger footprints require DA. Requirements vary significantly by state and council — seek site-specific planning advice. No dedicated car space is required for secondary dwellings in many councils.
Project Examples
- Rental investment granny flat — Hills District NSW
- Ageing-in-place dwelling for elderly parent — Northern Beaches NSW
Important Notice
All floor plans, specifications, and product information are indicative only and subject to change without notice. Concept plans and indicative layouts are for illustrative purposes only and do not represent approved designs. Final designs are subject to design development, structural engineering, services coordination, and planning and building approval. Building Solution Australia does not guarantee that any product can be approved or constructed on any specific site without site-specific assessment. Consult a qualified building professional and your relevant planning authority before making any decisions based on this information.