[150]+
Granny flats built
[4.9]★
Google rating
[12]
Week average build
$0
Hidden variations
How Much Does a Granny Flat Cost in Sydney?
The cost of a granny flat depends on its size, layout, finishes, site access, land conditions, service connections and approval pathway.
01 Starting price
- From $[XXX,XXX]
- For an agreed standard design and specification on a suitable site.
02 Typical project range
- $[XXX,XXX] to $[XXX,XXX]
- Depending on the design, inclusions and site requirements.
03 Final price
- Confirmed after assessment
- We review your property before preparing a detailed quotation.
Granny Flat Plans and Prices
Choose an established design or create a custom granny flat around your property and intended use. Prices are indicative until the site and final scope have been assessed.
* Final prices depend on the selected design, specification, property conditions, and approval requirements.
One-Bedroom Granny Flat
A compact design for an ageing parent, adult child, guest accommodation, or smaller rental dwelling.
- [40 to 50]m²
- 1 bedroom
- 1 bathroom
From $[XXX,XXX]
Two-Bedroom Granny Flat
A flexible option for family accommodation or long-term rental use.
- [55 to 60]m²
- 2 bedrooms
- 1 bathroom
From $[XXX,XXX]
60m² Granny Flat
- Use the available floor area efficiently with a design created around your occupants and property.
60m² - 2 to 3 bedrooms
- Up to [2] bathrooms
From $[XXX,XXX]
Three-Bedroom Granny Flat
A carefully planned option for owners who need more separate rooms within a compact floor area.
- Up to [60]m²
- 3 bedrooms
- 1 to 2 bathrooms
From $[XXX,XXX]
Two-Storey Granny Flat
A possible solution for constrained properties where preserving outdoor space is important.
- Up to [60]m²
- Compact footprint
From $[XXX,XXX]
Custom Granny Flat
A custom layout responding to access, orientation, privacy, accessibility, and future use.
- Designed around your property
- Price on assessment
F E A T U R E S
What Is Included in Your Granny Flat Price?
A useful quotation should show more than the building shell. It should clearly identify the design, approvals, construction, finishes, service work and certification included in the price.
1. Design and documentation
- Design consultation
- Selected plan or agreed custom design
- Architectural drafting
- Construction drawings
- Documents included in the agreed scope
2. Approval support
- Property and planning review
- CDC or DA pathway recommendation
- Preparation of agreed approval documents
- Coordination with the relevant certifier or council
- Approval fees listed clearly in the quotation
3. Construction
- Site establishment
- Set-out and standard excavation
- Foundation or concrete slab
- Structural frame
- Roofing and exterior finish
- Windows and external doors
4. Interior
- Internal wall and ceiling linings
- Doors and trims
- Painting
- Flooring from the selected range
- Kitchen and bathroom finishes
- Electrical and plumbing items listed in the specification
5. Completion
- Required inspections
- Certification items included in the scope
- Practical completion inspection
- Handover documents and keys
Granny Flat Approval Costs and Pathways
The correct approval pathway depends on the property, proposed design and applicable planning controls. Your property may qualify for complying development or require a development application.
Complying Development Certificate
A CDC may be available when the property and proposed granny flat satisfy all applicable development standards.
Key details:
- Assessed by an accredited certifier or council
- Available only when all relevant requirements are met
- Requires plans and supporting documents
- Indicative timeframe: [Verify]
- Indicative cost: $[X,XXX] to $[X,XXX]
- Package status: [Confirm what is included]
Planning note:
Approval eligibility, fees, and timeframes must be confirmed for the individual property. Approval cannot be guaranteed before assessment.
Development Application
A DA may be required when the property or design does not qualify for complying development.
Key details:
- Assessed by the local council
- Requirements vary between properties and applications
- Additional reports may be needed
- Indicative timeframe: [Verify]
- Indicative cost: $[X,XXX] to $[X,XXX]
- Management status: [Confirm exact service scope]
Planning note:
Approval eligibility, fees and timeframes must be confirmed for the individual property. Approval cannot be guaranteed before assessment.
Why Sydney Homeowners Choose Us
A granny flat project requires the design, approval pathway, construction scope, and final inclusions to work together.
Clear pricing
- Receive a detailed quotation showing the agreed inclusions and identified property requirements.
One coordinated team
- Design, approval coordination and construction are managed as one project.
Approval support
- We help identify the appropriate pathway and coordinate the agreed approval process.
Licensed construction
- The project is completed under the appropriate NSW residential building requirements.
Property-focused design
- The proposed design considers access, orientation, privacy, services, site conditions, and intended use.
From Site Assessment to Handover
Every property is different, but the project generally moves through four key stages.
Step 1: Site assessment
We discuss the intended use and review the property’s access, available space, slope, visible services, and constraints.
Step 2: Design and quotation
We recommend or develop a suitable design and prepare a quotation showing the agreed inclusions and site requirements.
Step 3: Approval
The required plans and supporting documents are prepared for the applicable CDC or DA pathway.
Step 4: Construction and handover
Construction proceeds through the foundation, structure, enclosure, internal work, finishes, inspections, and handover stages.
Granny Flat Cost in Sydney: Frequently Asked Questions
Answers to the most common questions about granny flat prices, inclusions, approval costs, and finance in Sydney.
1. How much does a granny flat cost in Sydney?
A fully built granny flat in Sydney typically costs between $[XXX,XXX] and $[XXX,XXX]. The final price depends on the size, number of bedrooms, design, finishes and site conditions such as slope, access and service connections. Our granny flat designs start from $[XXX,XXX].
2. How much does it cost to build a granny flat per square metre?
Building a granny flat in Sydney typically costs between $[X,XXX] and $[X,XXX] per square metre. Smaller granny flats usually cost more per square metre because the kitchen, bathroom and connections are fixed costs spread over less floor area.
3. How much does a 1 bedroom granny flat cost in Sydney?
A 1 bedroom granny flat in Sydney typically costs between $[XXX,XXX] and $[XXX,XXX]. It usually costs less than a 2 bedroom design because of its smaller floor area, fewer rooms and simpler layout.
4. How much does a 2 bedroom granny flat cost in Sydney?
A 2 bedroom granny flat in Sydney typically costs between $[XXX,XXX] and $[XXX,XXX] to build. Most 2 bedroom designs are between 55m² and 60m², the maximum size generally permitted for a granny flat in NSW.
5. Where can I see granny flat plans and prices?
You can compare our granny flat plans and prices on our designs page, including 1 bedroom, 2 bedroom and 60m² layouts. Each plan shows the floor area, number of bedrooms and starting price, and any plan can be adjusted to suit your block.
6. What is the cheapest way to build a granny flat?
The cheapest way to build a granny flat is usually to choose a smaller, single-storey design with a simple roof, standard finishes, and a flat block with easy access. Choosing an existing plan instead of a fully custom design also reduces design and documentation costs.
7. What is included in the price of a granny flat?
Our granny flat price includes [Verified inclusions]. Every inclusion is listed in your written quote before you sign a contract.
8. Are there extra costs when building a granny flat?
Extra costs can apply when a property has specific site conditions, such as a sloping block, difficult access, long sewer or stormwater connections, trees or demolition. We identify these during the site assessment and show them clearly in your quote before construction starts.
9. How much does granny flat approval cost in NSW?
Granny flat approval costs in NSW depend on the approval pathway. A Complying Development Certificate (CDC) typically costs $[X,XXX] to $[X,XXX], while a Development Application (DA) typically costs $[X,XXX] to $[X,XXX]. Fees vary by property, council and the reports required.
10. Is a kit granny flat cheaper than a builder?
A granny flat kit has a lower upfront price, but it usually excludes approval, slab, plumbing, electrical, connections and labour. Once those costs are added, the total can be similar to a fully built granny flat from a builder, with more risk and responsibility for the owner.
11. Does a granny flat add value to a property?
A granny flat can add value to a Sydney property by increasing usable living space and creating the option of rental income. The amount depends on the location, quality of the build and local market. This is general information only, not financial advice.
12. How can I get an accurate price for a granny flat on my property?
The most accurate way to price a granny flat is a site assessment. We check the block size, slope, access and service connections, then provide a written, itemised quote for your chosen design.
