Granny flats have become popular for Australian homeowners looking to add extra living space to their property.
A granny flat offers versatile solutions for additional family members, rental income, or increased property value. However, one common question arises: Is a two-storey granny flat possible?
This article will explore the possibilities, considerations, and benefits of constructing a two-storey granny flat in Australia, as well as the legal and design aspects.
Let’s get straight to the point.
Yes, you can build a two-storey granny flat in Australia. It offers advantages like maximising limited space, increased privacy, and higher rental income potential.
However, it must comply with local council regulations, including height restrictions, setbacks, and floor area limits. Two-storey granny flats require careful design considerations, such as staircase placement, natural light optimisation, and outdoor space utilisation.
While construction costs are higher than single-storey designs, the long-term return on investment through increased property value and rental opportunities can be significant.
Can You Build A Two-Storey Granny Flat?
Yes, It Is Possible!
The short answer is yes, a two-storey granny flat is possible in Australia. Homeowners can now opt for two-storey designs to maximise their available space, especially in urban areas with limited land availability.
Council Approval Group, a prominent authority in Australia for building approvals, confirms that you can build a two-storey granny flat if it complies with local council regulations.
These regulations may vary depending on where you live, so it’s important to consult your local council or a professional service like Council Approval Group to understand specific requirements for your area.
Similarly, DIY Granny Flats Australia also supports the feasibility of two-storey granny flats, noting that these designs are becoming increasingly popular for homeowners looking to make the most of their limited block size. The key is adhering to local councils’ height restrictions, setbacks, and floor area limits.
Benefits Of A Two-Storey Granny Flat
Building a two-storey granny flat offers a variety of benefits:
- Maximising Limited Space: A two-storey design can help homeowners double their usable living area without expanding the building footprint in areas where land size is a constraint.
- Increased Privacy: A vertical design can help create better separation between different living areas, ideal for multigenerational families or tenants.
- Flexible Design Options: Two-storey granny flats offer more flexibility in design, allowing for multiple bedrooms, bathrooms, and even separate living and kitchen areas on each floor.
- Higher Rental Income Potential: A two-storey granny flat could attract higher rental returns due to its more space and functional areas.
Legal Considerations For Two-Storey Granny Flats
Local Council Regulations
The most critical factor in building a two-storey granny flat is ensuring compliance with local council regulations. Each local government area in Australia has specific rules for constructing secondary dwellings.
This includes limitations on height, setbacks (the minimum distance from the boundary), and the overall size of the granny flat. For example, councils may restrict the maximum height of a granny flat to avoid overshadowing neighbouring properties or infringing on privacy.
The maximum height allowed is around 8.5 metres, but this can vary. Be sure to check the regulations of your particular area before proceeding with any construction.
Site And Land Zoning
Another critical aspect to consider is your property’s zoning. Certain zones may restrict or allow for more flexibility in the types of structures you can build, including two-storey granny flats.
Properties in residential zones may have different rules than those in rural or mixed-use zones.
Setbacks And Floor Area Ratio
Local councils often impose setback rules that dictate how close you can build to the boundary of your property. Setbacks are particularly important for two-storey granny flats, as they may need to be positioned further away from the boundary to reduce the impact on neighbours.
Additionally, there may be limitations on the floor area ratio, which refers to the total floor area of your granny flat relative to the property size. Some councils limit granny flats to 60 square metres of floor area, though exceptions may be made for larger lots.
Fire Safety And Building Codes
Two-storey structures must also comply with Australian Building Codes regarding fire safety, particularly if the granny flat is detached from the main house. Ensuring that the building materials and designs meet fire safety standards is crucial, particularly for properties in bushfire-prone areas.
Design Considerations For Two-Storey Granny Flats
Layout Optimisation
Optimising the layout is essential to use space best when designing a two-storey granny flat. Living areas such as the kitchen and lounge are typically located on the ground floor, while bedrooms and bathrooms are placed on the upper floor.
This vertical separation can offer enhanced privacy and functionality, especially for rental purposes.
Staircase Design
One of the most important aspects of a two-storey design is the staircase. Choosing a staircase that maximises space while maintaining safety and ease of use is vital. Consider spiral or compact straight staircases that take up minimal floor space but provide full functionality.
Maximising Natural Light
Another design consideration is maximising natural light. Two-storey granny flats often benefit from larger windows and better opportunities to catch sunlight, especially on the upper floor. Incorporating skylights and large windows can improve the home’s overall feel and energy efficiency.
Outdoor Spaces
A two-storey granny flat allows for more creative use of outdoor spaces. The upper floor could have a balcony or decking, which adds aesthetic appeal and increases the living space. Similarly, the ground level could include outdoor entertainment areas, gardens, or courtyards.
Cost Of Building A Two-Storey Granny Flat
Higher Initial Costs
One of the primary considerations when building a two-storey granny flat is the cost.
Constructing a two-storey building generally incurs higher expenses than a single-storey flat due to the need for additional structural support, materials, and labour. Foundations, load-bearing walls, and staircases add to the complexity of the build, increasing costs.
According to experts, building a two-storey granny flat typically costs $120,000 to $200,000, depending on the size, design, and location. However, the long-term benefits, including increased property value and potential rental income, often outweigh the initial expenses.
Long-Term Return On Investment
While the upfront costs may be higher, the long-term returns on a two-storey granny flat can be significant. Due to the additional space and amenities, a well-designed and approved two-storey granny flat can increase your property’s overall value and provide higher rental income than a single-storey unit.
Conclusion
Building a two-storey granny flat is possible and offers numerous benefits for homeowners looking to maximise space and increase their property’s value.
However, it’s essential to consider local council regulations, costs, and design elements before proceeding. By understanding the key factors, you can make an informed decision that suits your needs and lifestyle.
Before starting your project, consult professionals familiar with local council requirements and granny flat designs, such as Council Approval Group or DIY Granny Flats Australia. Their expertise can help you navigate the legal complexities and ensure your two-storey granny flat meets all necessary standards.
Frequently Asked Questions About Granny Flat
What Is The Maximum Height Allowed For A Two-Storey Granny Flat?
The maximum height for a two-storey granny flat varies by local council but is typically around 8.5 metres. Always check specific council regulations in your area to ensure compliance.
Do Two-Storey Granny Flats Increase Property Value?
Yes, a well-designed and approved two-storey granny flat can significantly increase your property’s value, especially in urban areas where space is limited. The additional living area and rental income potential add substantial value.
Can I Rent Out A Two-Storey Granny Flat?
Yes, you can rent out a two-storey granny flat. The additional space, bedrooms, and functional areas attract higher rental income than single-storey designs.
What Are The Setback Rules For A Two-Storey Granny Flat?
Setbacks dictate how far the granny flat must be from the property boundary. These rules vary by council and are typically stricter for two-storey buildings to minimise the impact on neighbouring properties.
Are There Additional Costs Involved In Building A Two-Storey Granny Flat?
Two-storey constructions cost more due to structural complexity, additional materials, and labour. However, the long-term returns, such as increased property value, can outweigh the initial expenses.