With the rising demand for affordable accommodation and the popularity of short-term rentals, granny flats in Melbourne and across Australia are becoming an attractive investment option. Many homeowners are now considering whether converting their granny flats into Airbnb rentals is a smart financial move.
This article explores the benefits, challenges, and key considerations of using a granny flat as an Airbnb rental, helping you determine if it's the right investment for you.
What is a Granny Flat?
A granny flat, also known as a secondary dwelling or accessory dwelling unit (ADU), is a self-contained living space located on the same property as the main residence. These units typically include a bedroom, bathroom, kitchenette, and living area, making them suitable for independent living.
In cities like Melbourne and Sydney, prefabricated homes and modular homes are becoming popular choices for granny flats due to their affordability and quick construction times. Many homeowners opt for prefab homes Melbourne or modular homes Melbourne to set up a granny flat efficiently.
Financial Benefits of Renting Out a Granny Flat on Airbnb

Turning a granny flat into an Airbnb rental offers several financial advantages, making it an appealing option for homeowners looking to boost their income.
1. Additional Income Stream
Renting out a granny flat on Airbnb can provide a steady flow of income, especially in high-demand areas. Short-term rentals often generate higher nightly rates compared to traditional long-term leases.
2. More Affordable than Buying a Second Property
Building a granny flat is often cheaper than purchasing an entirely separate investment property. Prefabricated options, such as container homes and modular homes, offer cost-effective solutions that maximise return on investment.
3. Higher Flexibility
Unlike long-term rentals, Airbnb allows homeowners to control availability, meaning you can rent it out only when needed or reserve it for personal use.
Regulations & Legal Considerations in Victoria
If you’re planning to use your granny flat as an Airbnb rental in Victoria, there are important regulations to be aware of.
1. Planning Permit Exemptions
As of May 1, 2024, in Victoria, granny flats under 60 square metres no longer require a planning permit, provided they do not fall under flood or environmental overlays. This change makes it easier and quicker for homeowners to set up granny flats Melbourne without excessive red tape.
2. Short-Term Rental Levies
Starting January 1, 2025, Victoria will impose a 7.5% levy on short-term rentals, including Airbnb. This policy aims to address housing shortages and support social housing initiatives.
3. Local Council Restrictions
Each council may have its own zoning laws, noise restrictions, and guest limits, so it’s crucial to check with your local government before listing your granny flat on Airbnb.
Tax Considerations for Granny Flat Airbnb Rentals
Like any investment property, renting out a granny flat comes with tax implications.
1. Capital Gains Tax (CGT)
If you rent out your granny flat, a portion of your property may be subject to Capital Gains Tax (CGT) when you sell it. The taxable amount is calculated based on the size of the rental space and duration of use.
2. Tax Deductions
Expenses related to maintaining your granny flat, such as cleaning, repairs, furniture, and utilities, may be tax-deductible, helping to offset some of the rental income. Consulting an accountant can ensure you take full advantage of available deductions.
Market Demand for Granny Flats as Short-Term Rentals

The demand for granny flats has increased significantly, particularly in Melbourne and Sydney, where rental prices and housing shortages are driving interest in affordable, self-contained accommodation.
1. Popularity Growth
Searches for granny flats have risen by over 50% compared to the previous year, reflecting a growing trend towards compact, flexible housing solutions.
2. Versatile Uses
Beyond Airbnb, granny flats are appealing for:
• Elderly parents or relatives who need independent but close-by accommodation.
• Young adults seeking an affordable living arrangement.
• Traditional rental properties, offering long-term leasing options.
This versatility makes granny flats a resilient investment, even if short-term rental trends change.
Practical Considerations Before Turning a Granny Flat into an Airbnb
Before converting your granny flat into an Airbnb rental, there are several practical factors to keep in mind.
1. Property Suitability
Not all properties are ideal for short-term rentals. Consider:
• Available space – Ensure the granny flat does not overcrowd your property.
• Parking and accessibility – Guests will need convenient access to the unit.
2. Privacy & Guest Experience
To maintain privacy and comfort:
• Install separate entrances for the granny flat.
• Consider soundproofing to reduce noise between the main house and rental unit.
3. Management Responsibilities
Running an Airbnb involves ongoing maintenance and guest management. Key tasks include:
• Handling guest inquiries and bookings.
• Regular cleaning and restocking.
• Managing repairs and unexpected issues.
If you prefer a hands-off approach, you may want to hire a property management company to handle operations.
Is a Granny Flat Airbnb Rental a Good Investment?

Turning a granny flat into an Airbnb rental can be a profitable investment, but success depends on location, regulations, and management effort.
Best suited for:
• Properties in high-demand areas (e.g., Melbourne, Sydney).
• Homeowners who want additional income without selling their home.
• Those willing to manage or outsource Airbnb hosting duties.
May not be ideal for:
• Homes with limited privacy or restricted access for guests.
• Owners who prefer a fixed, long-term rental income.
• Those unwilling to navigate changing Airbnb regulations.
By carefully considering financial, legal, and operational factors, you can determine whether a granny flat Airbnb rental aligns with your investment goals.
Conclusion
Investing in a granny flat Airbnb rental can be a lucrative and flexible investment, especially in growing markets like Melbourne and Sydney. With rising demand for short-term rentals, along with affordable prefab and modular home options, now is a great time to explore this opportunity.
If you’re considering turning a granny flat into an Airbnb, ensure you understand local regulations, financial responsibilities, and management requirements to maximise your rental income and investment potential. Contact us to find out how we can help you build the perfect granny flat for your investment.
Frequently Asked Questions (FAQs)
1. Are granny flats a good investment for Airbnb rentals?
Yes, in high-demand areas, granny flats can generate consistent short-term rental income while offering flexibility for personal or long-term use.
2. Do I need council approval to rent out a granny flat on Airbnb?
It depends on local regulations. In Victoria, granny flats under 60 square metres no longer need planning permits, but short-term rentals may still be subject to council restrictions.
3. What are the tax implications of renting a granny flat?
Renting out a granny flat may subject your property to Capital Gains Tax (CGT) upon sale. However, rental expenses like maintenance, utilities, and cleaning may be tax-deductible.
4. How much can I earn by renting out a granny flat on Airbnb?
Earnings vary based on location, guest demand, and pricing strategy. Properties in tourist-friendly areas tend to achieve higher nightly rates.
5. What’s the difference between a granny flat and a prefab home?
A granny flat is a self-contained secondary dwelling, while prefab homes are pre-manufactured housing solutions that can serve as primary or secondary residences.