If you’re researching granny flat cost in Victoria, you’ve probably already found plenty of starting prices online. The harder part is working out what those numbers actually cover — and what you may still need to budget for before the home is ready on your property.
At Todd Devine Homes, our current granny flat and small second dwelling range starts from $120,300, with larger designs currently advertised in the $170,000s. That gives you a useful starting point, but it isn’t automatically the final cost of completing a granny flat on every block.
Your final project cost can also be affected by your site, access, service connections, transport and crane requirements, planning requirements where applicable, and any changes you make to the standard design.
So, instead of giving you one number and leaving it there, let’s break down what you’re actually paying for.
What does a granny flat cost with Todd Devine Homes?
Here’s a snapshot of the current Todd Devine Homes granny flat range:
| Design | Size | Layout | Current starting price |
| Melaleuca | 33.2m² | 1 bed, 1 bath | From $120,300 |
| Alder | 35.7m² | 1 bed, 1 bath | From $124,400 |
| Bells | 60m² | 2 bed, 1 bath | From $151,600 |
| Myrtle | 54m² | 1 bed + study, 1 bath | From $151,800 |
| Chestnut | 60m² | 2 bed, 1 bath | From $156,100 |
| Banksia | 60m² | 2 bed + study, 1 bath | From $159,200 |
| Radiant | 60m² | 2 bed, 2 bath | From $173,900 |
Current advertised pricing is from the Todd Devine Homes granny flat range and may change. The sizes and layouts are detailed in the current Small Second Dwellings, Granny Flats & Airbnb-Ready Homes brochure.
These figures help you understand the home portion of your budget. They shouldn’t be read as a guaranteed all-in project price for every property.
That distinction matters because two families can choose exactly the same granny flat and still end up with different overall project costs.
Why isn’t the starting price always the final granny flat cost?
A simple way to think about your budget is to separate it into three parts:
The home itself — the design, standard specification and inclusions.
Your property and installation — the work required to get that particular home onto your particular block and connected.
Your choices — any changes, selections or additions outside the standard specification.
The first part is relatively easy to see on a price list. The other two become clearer once we know more about your property and what you want from the home.
That is why a starting price is useful for early budgeting, but a site-specific quote tells you much more.
What is included in a Todd Devine Homes granny flat?
One of the best ways to compare granny flat prices is to look beyond the headline number and ask what you actually receive for it.
Our current brochure sets out the inclusions for each design in detail. Depending on the floor plan, this includes a completed kitchen, bathroom, internal and external finishes, flooring, built-in storage, double-glazed windows and other fixtures needed for a self-contained home.
There are also several standard items worth knowing about when you are putting together a budget.
Heating, electrical and essential systems
Current standard inclusions include:
- a 3.5kW split-system for heating and cooling in the living area
- LED downlights
- power points throughout
- smoke alarm
- a 170L heat-pump hot water system supplied for installation with connections
- a 1.5kW four-panel solar system
Building and compliance inclusions
The current brochure also lists:
- site inspections
- building permit
- soil test report
- plumbing fixtures and fittings, including an outdoor garden tap
That is why comparing two builders purely on the advertised starting price can be misleading. A lower number may look attractive until you find that something you expected to be part of the home sits outside the quoted scope.
Always compare the latest written inclusions for the exact design you are considering, as home designs, pricing and inclusions can change.
Want to see what’s actually included?
Our Small Second Dwellings, Granny Flats & Airbnb-Ready Homes Brochure gives you the floor plans, sizes and detailed inclusions across the Todd Devine Homes range.
Download the Granny Flat Brochure
If you’d prefer to compare layouts and finishes in person, you can also visit Todd Devine Homes’ Bayswater display homes.
What can add to the final cost of a granny flat?
This is where your property starts to matter.
Rather than thinking of these as “hidden costs”, it is more useful to think of them as site-specific and project-specific costs. Not every block needs the same work, so building every possible allowance into every home price would not necessarily give you a more accurate number.
Here are the main areas to understand.
1. Site conditions
The physical conditions of your property can affect what is required to install the home safely.
The slope of the land, site levels and other conditions identified during assessment may change the work needed on site. For example, our current brochure notes that certain sites with a fall greater than 600mm require perimeter scaffolding, while skillion-roof designs also have specific scaffolding requirements.
This is one reason an early site assessment matters: what looks straightforward from a floor plan may look different once the property itself is considered.
2. Access to your backyard
Having enough space for a granny flat is only part of the equation.
We also need to consider how the dwelling will get to its final position. Access can affect the transport and lifting approach, particularly where there are existing homes, narrow access points, trees, neighbouring properties or other physical constraints around the site.
A backyard can be large enough for the finished home while still requiring a more considered installation plan.
3. Transport and crane hire
Transport is quoted separately because the cost depends on factors such as the distance travelled and the size of the module.
Crane hire is also assessed according to what is required for the individual site rather than being applied as one standard cost to every project.
This is a good example of why the same granny flat can result in different project totals on two different properties.
4. Service connections
A self-contained granny flat needs working services, but the distance and complexity involved in connecting them can vary considerably from one block to another.
The current Todd Devine Homes brochure lists connections for:
- drainage
- sewer
- stormwater
- water
- electricity
as items arranged separately from the standard home scope.
Your existing property layout and the location of those services can therefore influence your granny flat build cost.
5. On-site joining and finishing
Depending on the design, there may also be work required once the dwelling arrives on site.
Sometimes referred to as complexing, this can include the alignment, sealing, connection and finishing work needed for the transported sections to function as a complete home.
The brochure gives examples such as fixing stairs and landings, installing baseboards or skirting, completing paint touch-ups after transport and making final adjustments to doors and windows.
6. Planning requirements
Todd Devine Homes currently includes the building permit in its standard granny flat inclusions.
Planning is different. Whether additional planning requirements apply needs to be checked against the proposed project and property rather than assumed from a general rule online. Where planning permit fees are required, our current brochure lists these separately from the standard build scope.
If you are still at the early research stage, the important thing is not to assume that what applied to somebody else’s block will automatically apply to yours.
You can also browse Todd Devine Homes’ FAQs for answers to common questions about granny flats and the building process.
7. Design changes and selections
Your chosen floor plan gives you a defined starting point, but changes from the standard specification can affect the price.
The most useful approach is to decide what matters to the person who will actually live there before making changes.
If the home is for Mum or Dad, for example, priorities may include comfortable access, practical storage, privacy and an easy-to-manage layout. For an adult child, the priorities may be different.
Starting with those everyday needs helps you spend money where it makes a meaningful difference rather than changing a design simply for the sake of upgrading it.
Why can the same granny flat cost more on one property than another?
Imagine two families both choose the same 60m² design.
One property has straightforward access, relatively simple service connections and an uncomplicated installation.
The other has restricted access, greater distance to existing services and requires a different crane setup.
The home can be the same. The site isn’t.
That is why the most useful granny flat quote is not simply a price attached to a floor plan. It should help you understand what has already been allowed for and which parts of the project have been priced specifically for your property.
Todd Devine Homes follows this same distinction in its quoting process: even when two customers choose the same design, the final cost can vary because of location, site access, connections, council and engineering requirements, and customer-requested changes.
That project-specific approach is supported by Todd Devine and the wider team across design, quoting and project delivery.
How do you compare granny flat quotes properly?
When you have two granny flat prices in front of you, resist the temptation to look only at the total at the bottom.
Ask the same questions of each quote:
- What is included in the advertised home price?
- What is specifically excluded?
- Which costs depend on my site?
- Have transport and crane requirements been assessed?
- Who is responsible for service connections?
- What permits, reports or consultants have been included?
- Are any amounts still provisional or subject to further assessment?
- What selections or changes would affect the current figure?
- What still needs to be checked before I have a realistic total project budget?
A detailed quote should make those distinctions easier to understand.
If you are comparing builders, that clarity is often more useful than simply finding the lowest starting number.
When can you get a more accurate granny flat price?
You can get a much clearer picture once you move from:
“How much is this design?”
to:
“How much is this design for my property?”
To do that, we need enough information about the project to understand things such as your preferred design, property location, site conditions, access, available services and any changes you want to make.
Todd Devine Homes offers an early Rapid Estimate for a high-level understanding of possible costs. When you are ready for a more detailed proposal, a site-specific quote assesses the requirements of the individual project rather than relying only on a standard price list.
That extra detail is what turns a starting price into a budget you can actually make decisions around.
So, how much should you budget for a granny flat in Victoria?
There isn’t one honest all-in number that applies to every granny flat in Victoria.
If you are looking specifically at Todd Devine Homes, our current granny flat range starts from $120,300, with designs extending into the $170,000s depending on the size and layout you choose.
From there, your property determines what else needs to be allowed for.
The key is to understand:
- the price of the home
- what is included in that price
- which costs are specific to your block
- any changes you want to make
- what still needs to be assessed
That gives you a far more useful picture than relying on a single advertised figure.
For families considering a granny flat for ageing parents or adult children, it also means you can make the decision around the things that matter most: creating a comfortable, independent home while keeping family close. That combination of privacy and connection is a key priority for multigenerational households considering this type of build.
Ready to work out what could fit your property and budget?
Start by exploring the Todd Devine Homes granny flat and small second dwelling range. Once you have a feel for the layout that suits your family, we can help you work through your site and the project-specific requirements that affect the final price.
Frequently Asked Questions
How much does a one-bedroom granny flat cost in Victoria?
There is no single price across the Victorian market because designs, inclusions and site requirements differ between builders and properties. As a Todd Devine Homes example, our current compact one-bedroom designs start from $120,300 for the Melaleuca, with another compact one-bedroom option currently advertised from $124,400, the Alder.
Those are starting home prices rather than guaranteed all-in project costs.
How much does a two-bedroom granny flat cost?
Todd Devine Homes currently has two-bedroom granny flat designs advertised from the low $150,000s through to the $170,000s, depending on the floor plan. Your total project figure may also include property-specific requirements such as services, delivery and installation.
Are site costs included in granny flat prices?
It depends on what the builder includes in the quoted scope. With Todd Devine Homes, several site-specific items are handled separately, including service connections, transport, crane hire and some installation-related requirements.
Is a building permit included with a Todd Devine Homes granny flat?
The current Todd Devine Homes small second dwelling brochure lists the building permit as a standard inclusion. Always check the latest inclusions for the design and project you are considering.
Are planning permit fees included?
Where planning permit fees are required for the particular property and project, the current brochure lists them separately from the standard build scope. Requirements should be checked for the individual site rather than assumed from a general rule.
Why can two granny flats with the same floor plan cost different amounts?
The home may be the same, but site access, service connections, transport requirements, crane needs, property conditions and requested changes can differ. Those project-specific requirements can change the final cost even when the underlying floor plan is identical.
