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Frequently Asked Questions

Find answers to common questions about building a granny flat in Victoria. For in-depth guides visit our granny flat knowledge hub. Can't find what you're looking for? Speak to an expert for personalized advice. Understand our construction methodology, explore recent builds, or discover granny flat builders Melbourne.

Do I need a permit to build a granny flat in Victoria?

You will always need a building permit. A planning permit is a separate approval, and under Victoria’s updated small second dwelling rules, most sites no longer need one for a home up to 80m². A planning permit can still be required if your property is in a bushfire prone area, is affected by certain overlays (such as flooding), or is a residential lot under 300m². We check all of this during your free site assessment and handle every application for you.

How long does it take to build a granny flat?

The typical timeline from initial consultation to completion is 4 to 6 months. This includes design (2 to 3 weeks), council approvals (6 to 12 weeks), and construction (10 to 14 weeks). The exact timeline depends on factors like design complexity, site conditions, and council processing times. We provide a detailed timeline during the consultation phase.

How much does a granny flat cost?

Our custom granny flats in Melbourne typically start from $198,000 + GST, depending on size and specifications. Contact us for a free consultation and fixed-price quote tailored to your property.

Can I use my granny flat as a rental property?

Yes, granny flats are an excellent investment opportunity and can be rented out to generate income. Many of our clients achieve strong rental returns that help offset their mortgage. We can design your granny flat with rental appeal in mind, incorporating features that maximize rental value.

What happens if I sell my property?

Your granny flat stays with the property and typically makes it more attractive to buyers. Properties with granny flats often sell faster and at higher prices because they offer versatility. The new owners can use it for family, rental income, or a home office.

What size granny flat can I build on my property?

Since 15 October 2026, Victoria’s planning rules allow a small second dwelling of up to 80m² (previously 60m²) without a planning permit on most residential and rural sites. Your block size, setbacks, overlays and the rule that the home can’t connect to mains gas all affect what’s possible. During your site assessment, we’ll confirm the best size and layout for your property.

Should I build 60m² or 80m²?

60m² suits a compact 1–2 bedroom home and a tighter budget. 80m² gives you room for a third bedroom, a second bathroom or a separate study, which suits families, multigenerational living and higher rental appeal. Cost increases with size, so we’ll talk through both options in your free site assessment.

Does the 80m² limit include my deck or verandah?

The way floor area is measured was updated in the same amendment. We confirm how decks, verandahs and other areas count towards the limit when we assess your site and design your plans.

Will a granny flat add value to my property?

Yes. A well designed granny flat typically adds significant value to your property, often more than the construction cost. Real estate experts estimate that granny flats can increase property values by up to $200,000 depending on location and quality. They also expand your pool of potential buyers when you decide to sell.

Do you handle all the paperwork and approvals?

Absolutely. We manage the entire approval process including council applications, building permits, and all regulatory compliance. Our experienced team knows Victorian building regulations inside out and will handle all documentation, submissions, and liaison with authorities on your behalf.

Can I customize the design of my granny flat?

Yes! We specialize in custom designs tailored to your specific needs. Whether you want a modern studio, spacious two-bedroom layout, or accessibility features, we'll create a design that matches your vision, complements your existing home, and suits your property's characteristics.

What's included in your fixed-price quote?

Our comprehensive quotes include design, engineering, permits, all materials, labor, full internal fit out (kitchen, bathroom, flooring), electrical and plumbing connections, and project management. We provide transparent pricing with no hidden costs. What we quote is what you pay.

Are you HIA members?

Yes! We're proud members of the Housing Industry Association (HIA). This means all our builds come with HIA warranty coverage, giving you peace of mind and protection. Our membership demonstrates our commitment to industry best practices and professional standards. See all our credentials and certifications.

Can elderly parents or family members live in the granny flat?

Absolutely! Granny flats are perfect for multigenerational living. Many of our clients build them to house aging parents, adult children, or extended family. We can incorporate accessibility features like wider doorways, step-free entries, and accessible bathrooms to ensure comfort and safety.

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