Curated, listed for free
Find Custom Granny Flat Builders by State
Build a saved project brief: compare concepts, budget assumptions and dated supplier prices.
Compare builders for a granny flat designed around your block. Check their current licence, service area and proposed scope before requesting detailed quotes.
How to compare these supplier records
Build-stage labels group the recorded offers. Matching labels do not make two quotes equivalent: compare each supplier's inclusions. The listed town identifies the supplier; confirm delivery coverage for your address.
Field counts describe the saved records, not licensing, workmanship, availability or supplier quality. “Ask for quote” supplies no price basis.
Ask for GST, delivery, site preparation, foundations, utility connections and approval responsibilities to be itemised in your written quote. A question or exclusion in a saved record does not establish who supplies that work.
Compare recorded supplier scope
7 directory cards link to 7 distinct supplier website domains in this state. 3 cards have dated scope sources. Repeated cards are not counted as independent suppliers.
Which quote fields are recorded?
- Build stage: 2 of 3 sourced cards; 1 unrecorded or requiring clarification.
- Price / quote basis: 1 of 3 sourced cards; 2 unrecorded or requiring clarification.
- Inclusions: 1 of 3 sourced cards; 2 unrecorded or requiring clarification.
- Exclusions: 0 of 3 sourced cards; 3 unrecorded or requiring clarification.
| Supplier | Recorded price / quote scope | Recorded inclusions | Exclusions / to confirm | Missing quote fields | Checked |
|---|---|---|---|---|---|
| Build stage not established · 1 sourced card | |||||
| Backyard Grannys | Ask for quote | Preparation and submission of CDC or DA applications is advertised; confirm fees and the applicable approval pathway in your quote. | Not recorded; ask the supplier | Build stage, Price / quote basis, Exclusions | 10 October 2026 |
| Built on site; Foxwood model example · 1 sourced card | |||||
| 5 Star Granny Flats | Foxwood 47 m²: from A$160,000 (indicative) | Not recorded; ask the supplier | Not recorded; ask the supplier | Inclusions, Exclusions | 10 October 2026 |
| Design, approval coordination and construction · 1 sourced card | |||||
| The Granny Flat Experts | Ask for quote | Not recorded; ask the supplier | Not recorded; ask the supplier | Price / quote basis, Inclusions, Exclusions | 10 October 2026 |
The Granny Flat Experts
Sydney
Ask for quote
The provider advertises granny flat design, approval coordination and construction around Baulkham Hills, Blacktown and Castle Hill. Confirm the site-specific scope and approval fees in your quote.
Source: https://thegrannyflatexperts.com.au/Service area: Baulkham Hills, Blacktown, Castle Hill and surrounding areasBuild stage: Design, approval coordination and constructionLast checked: 10 October 2026
Granny Flat Solutions
Sydney / Coast
Ask for quote
Sydney-area granny flat builder offering custom designs. Ask who prepares the approval application and how the quote treats slope, drainage and restricted access.
Cubitt’s Granny Flats
NSW enquiries
Confirm current offer
We could not verify the current website on 2 October 2026. Confirm the contracting entity, licence, service area and construction method before relying on older brochures. Website access alone does not establish trading status.
Backyard Grannys
Newcastle / Hunter
Ask for quote
Granny flat specialist serving Newcastle and the Hunter. Take your survey and intended use to the first discussion so the proposed layout responds to the block.
Source: https://www.backyardgrannys.com.au/Service area: Newcastle; confirm coverage for your addressDocumented inclusions: Preparation and submission of CDC or DA applications is advertised; confirm fees and the applicable approval pathway in your quote.Last checked: 10 October 2026
5 Star Granny Flats
Sydney Metro
Foxwood 47 m²: from A$160,000 (indicative)
Sydney granny flat builder with a display option. Ask which displayed finishes are standard and which are upgrades before comparing a design price with another quote.
Source: https://5stargrannyflats.com.au/Service area: SydneyPrice date: 10 October 2026Build stage: Built on site; Foxwood model exampleDisplay location: 2 Mary Street, Blacktown; bookings requiredLast checked: 10 October 2026Verification note: Price and area refer to Foxwood only. Final price requires a site quote; GST treatment is not stated in the cited price card. This is not a price for every design.
Rescon Builders
Sydney
Ask for quote
Sydney builder offering granny flats, including projects intended for rental. Compare the construction scope separately from any rent or yield assumptions.
Acrow Investments
Central Coast
Ask for quote
Central Coast builder to discuss custom granny flat work with. For a sloping block, request separate allowances for excavation, retaining and foundations.
Verification note: The previous website redirects to Aplus Granny Flats. Confirm the current contracting entity; this is not a verified rebrand.
Compare recorded supplier scope
6 directory cards link to 6 distinct supplier website domains in this state. 5 cards have dated scope sources. Repeated cards are not counted as independent suppliers.
Which quote fields are recorded?
- Build stage: 5 of 5 sourced cards; 0 unrecorded or requiring clarification.
- Price / quote basis: 0 of 5 sourced cards; 5 unrecorded or requiring clarification.
- Inclusions: 2 of 5 sourced cards; 3 unrecorded or requiring clarification.
- Exclusions: 0 of 5 sourced cards; 5 unrecorded or requiring clarification.
| Supplier | Recorded price / quote scope | Recorded inclusions | Exclusions / to confirm | Missing quote fields | Checked |
|---|---|---|---|---|---|
| Built on site; demountable construction system · 1 sourced card | |||||
| Premier Homes (Vic) | Ask for quote | Not recorded; ask the supplier | Not recorded; ask the supplier | Price / quote basis, Inclusions, Exclusions | 4 October 2026 |
| Custom granny flat design and build; confirm construction method · 1 sourced card | |||||
| Expert Granny Flats | Ask for quote | Design, permits, construction, plumbing, electrical work, finishes and final certification are advertised; confirm the specification in the written quote. | Not recorded; ask the supplier | Price / quote basis, Exclusions | 10 October 2026 |
| Factory-built modular home or granny flat · 1 sourced card | |||||
| Todd Devine Homes | Ask for quote | Not recorded; ask the supplier | Not recorded; ask the supplier | Price / quote basis, Inclusions, Exclusions | 4 October 2026 |
| Prefabricated granny flat · 1 sourced card | |||||
| Superior Granny Flats | Ask for quote | Not recorded; ask the supplier | Confirm site works, crane access, foundations and connections in the written quote. | Price / quote basis, Inclusions, Exclusions | 4 October 2026 |
| Relocatable home or granny flat; confirm selected package · 1 sourced card | |||||
| Willow Grove Homes | Ask for quote | Approval management through to handover is advertised; confirm application fees and site work in your quote. | Not recorded; ask the supplier | Price / quote basis, Exclusions | 10 October 2026 |
Expert Granny Flats
Melbourne / Victoria
Ask for quote
Melbourne provider offering custom granny flat design, permits and construction in Victoria. Request a site-specific scope and confirm the contracting entity and relevant registration before signing.
Source: https://expertgrannyflats.com.au/Service area: Melbourne and VictoriaBuild stage: Custom granny flat design and build; confirm construction methodDocumented inclusions: Design, permits, construction, plumbing, electrical work, finishes and final certification are advertised; confirm the specification in the written quote.Last checked: 10 October 2026Verification note: Current offer and contact details checked on the supplier website. Builder registration and project availability have not been independently verified.
Premier Homes (Vic)
Melbourne / Victoria
Ask for quote
Offers granny flats built on site, using a demountable construction system, alongside custom homes. Compare the selected design and finishes with the site works and connections included in your quote.
Source: https://premierhomesvic.com.au/Build stage: Built on site; demountable construction systemLast checked: 4 October 2026Verification note: Primary website confirms the current granny flat offer and phone. Confirm display appointments, project coverage and builder registration directly.
Superior Granny Flats
Bayswater / Victoria
Ask for quote
Builds prefabricated granny flats at its Bayswater factory and advertises Victorian coverage, including outer Melbourne suburbs. Compare the selected module with delivery, access, foundations and utility work for your block.
Source: https://superiorgrannyflats.com.au/Build stage: Prefabricated granny flatDocumented exclusions: Confirm site works, crane access, foundations and connections in the written quote.Last checked: 4 October 2026Verification note: Primary website confirms the factory-built range and Victorian service coverage. Licensing and availability have not been independently verified.
Todd Devine Homes
Bayswater display / Victoria
Ask for quote
Offers transportable homes and granny flats in Victoria. Distinguish a private backyard project from a park installation when asking about design and delivery.
Source: https://todddevine.com.au/modular-homes-granny-flats/Build stage: Factory-built modular home or granny flatLast checked: 4 October 2026Verification note: Display centre: 816 Mountain Highway, Bayswater. The supplier advertises delivery across Victoria, including metro Melbourne and the Mornington Peninsula.
Dependable Granny Flats
Melbourne
Ask for quote
Melbourne granny flat provider. If accessibility matters, ask for door clearances, bathroom circulation and entry levels on the drawings before choosing a design.
Verification note: Website and current contact details could not be confirmed on 4 October 2026. Treat this as an unverified enquiry option; it does not establish trading status.
Willow Grove Homes
Victoria / Melbourne coverage
Ask for quote
Offers relocatable homes and granny flats. Confirm current coverage for your Victorian postcode and the delivery access needed for your chosen layout.
Source: https://willowgrovegrannyflats.com.au/Service area: Melbourne and wider areas; confirm postcode coverageBuild stage: Relocatable home or granny flat; confirm selected packageDocumented inclusions: Approval management through to handover is advertised; confirm application fees and site work in your quote.Last checked: 10 October 2026
Compare recorded supplier scope
4 directory cards link to 4 distinct supplier website domains in this state. 1 cards have dated scope sources. Repeated cards are not counted as independent suppliers.
Which quote fields are recorded?
- Build stage: 1 of 1 sourced cards; 0 unrecorded or requiring clarification.
- Price / quote basis: 0 of 1 sourced cards; 1 unrecorded or requiring clarification.
- Inclusions: 1 of 1 sourced cards; 0 unrecorded or requiring clarification.
- Exclusions: 0 of 1 sourced cards; 1 unrecorded or requiring clarification.
| Supplier | Recorded price / quote scope | Recorded inclusions | Exclusions / to confirm | Missing quote fields | Checked |
|---|---|---|---|---|---|
| Design, approval coordination, construction and handover · 1 sourced card | |||||
| Granny & Co Homes | Ask for quote | Standard finish options cover flooring, lighting, kitchen and bathroom fixtures; confirm the selected specification. | Not recorded; ask the supplier | Price / quote basis, Exclusions | 10 October 2026 |
Granny & Co Homes
Brisbane
Ask for quote
The provider offers small-home design, approval coordination and construction through to handover in greater Brisbane and south-east Queensland. Its standard finishes include flooring, lighting, kitchen and bathroom options.
Source: https://www.grannyandcohomes.com.au/what-we-do/Service area: Greater Brisbane and south-east QueenslandBuild stage: Design, approval coordination, construction and handoverDocumented inclusions: Standard finish options cover flooring, lighting, kitchen and bathroom fixtures; confirm the selected specification.Last checked: 10 October 2026Verification note: Current service offer checked on the provider website. Contracting entity, licence and project availability still need direct confirmation.
Vision Granny Flats
Brisbane / GC
Ask for quote
Granny flat provider listed for Brisbane and the Gold Coast. Ask for the current service area and a site-specific scope before using a standard design price in your budget.
Verification note: Website access could not be confirmed on 3 October 2026. Current offer and service area need confirmation; this does not establish trading status.
Superior Granny Flats QLD
SEQ Wide
Ask for quote
Granny flat enquiry option listed for south-east Queensland. Confirm the contracting business, current Queensland coverage and relevant licence before proceeding.
Verification note: Website access could not be confirmed on 3 October 2026. Current offer and service area need confirmation; this does not establish trading status.
Lifestyle Granny Flats
Brisbane
Ask for quote
Brisbane granny flat provider. For a narrow yard, compare the overall footprint and installation access with the buildable area on your survey.
Verification note: Website access could not be confirmed on 3 October 2026. Current offer and service area need confirmation; this does not establish trading status.
Compare recorded supplier scope
5 directory cards link to 5 distinct supplier website domains in this state. 1 cards have dated scope sources. Repeated cards are not counted as independent suppliers.
Which quote fields are recorded?
- Build stage: 1 of 1 sourced cards; 0 unrecorded or requiring clarification.
- Price / quote basis: 0 of 1 sourced cards; 1 unrecorded or requiring clarification.
- Inclusions: 1 of 1 sourced cards; 0 unrecorded or requiring clarification.
- Exclusions: 0 of 1 sourced cards; 1 unrecorded or requiring clarification.
| Supplier | Recorded price / quote scope | Recorded inclusions | Exclusions / to confirm | Missing quote fields | Checked |
|---|---|---|---|---|---|
| Design and construction to handover · 1 sourced card | |||||
| Granny Flats WA | Ask for quote | Design, drafting, engineering and council-submission coordination are advertised; confirm the services and fees included in your quote. | Not recorded; ask the supplier | Price / quote basis, Exclusions | 10 October 2026 |
Granny Flats WA
Perth Metro
Ask for quote
The provider advertises custom granny flats in Perth and surrounding suburbs, with design, engineering and council-submission coordination. Request a site quote to establish construction, connections and approval costs.
Source: https://grannyflatswa.com/Service area: Perth metropolitan area and surrounding suburbsBuild stage: Design and construction to handoverDocumented inclusions: Design, drafting, engineering and council-submission coordination are advertised; confirm the services and fees included in your quote.Last checked: 10 October 2026Verification note: Current service offer checked on the provider website. Contracting entity, licence and project availability still need direct confirmation.
Summit Granny Flats
Perth / SW
Ask for quote
Granny flat division of Summit Homes. Ask for the site works, connections and approval costs included in the quoted package for your WA property.
Source: https://www.summithomes.com.au/granny-flats/Service area: Perth, Western AustraliaLast checked: 10 October 2026
Dale Alcock
Perth
Ask for quote
WA home builder listed as a custom-build enquiry option. Confirm whether it currently takes granny flat projects in your area before requesting detailed pricing.
Classic Granny Flats
Perth
Ask for quote
Perth small-home and granny flat provider. Check current display availability and compare the actual inclusions of the design you are considering.
Fox Modular
WA Wide
Ask for quote
WA modular provider with contemporary layouts. Compare factory work with the foundations, delivery and connections still needed on your block.
Compare recorded supplier scope
6 directory cards link to 6 distinct supplier website domains in this state. 2 cards have dated scope sources. Repeated cards are not counted as independent suppliers.
Which quote fields are recorded?
- Build stage: 2 of 2 sourced cards; 0 unrecorded or requiring clarification.
- Price / quote basis: 0 of 2 sourced cards; 2 unrecorded or requiring clarification.
- Inclusions: 0 of 2 sourced cards; 2 unrecorded or requiring clarification.
- Exclusions: 0 of 2 sourced cards; 2 unrecorded or requiring clarification.
| Supplier | Recorded price / quote scope | Recorded inclusions | Exclusions / to confirm | Missing quote fields | Checked |
|---|---|---|---|---|---|
| Built on site · 1 sourced card | |||||
| Adelaide Granny Flats | Ask for quote | Not recorded; ask the supplier | Not recorded; ask the supplier | Price / quote basis, Inclusions, Exclusions | 10 October 2026 |
| Design and build; off-site component preparation · 1 sourced card | |||||
| Core-Space Habitats | Ask for quote | Not recorded; ask the supplier | Not recorded; ask the supplier | Price / quote basis, Inclusions, Exclusions | 2 October 2026 |
Core-Space Habitats
Camden Park
Ask for quote
South Australian designer and builder offering backyard studios and granny flats, with components prepared off site. Compare the one-bedroom option with the studio range before requesting a site-specific scope.
Source: https://corespace.com.au/contact/Build stage: Design and build; off-site component preparationLast checked: 2 October 2026
Adelaide Granny Flats
Adelaide
Ask for quote
The provider advertises custom granny flats built on site in Adelaide. Compare the selected construction specification and site works with the scope of a modular quote.
Source: https://grannyflatsadelaide.com/Service area: Adelaide, South AustraliaBuild stage: Built on siteLast checked: 10 October 2026
Hurst Constructions
SA Wide
Ask for quote
South Australian construction business listed for granny flat enquiries. Confirm project coverage and ask which allowances can change after the contract is signed.
Austral Constructions
Adelaide
Ask for quote
Adelaide provider of site-built granny flats. Compare the slab and wall specification with transportable alternatives using the same completed-project scope.
Sarah Homes
SA Wide
Ask for quote
South Australian home provider with smaller-home options. Confirm which designs suit a secondary dwelling and whether the quoted package is supply-only or a managed build.
Kookaburra Homes
Murray Bridge
Ask for quote
Murray Bridge home builder serving regional projects. Ask whether it offers a granny flat solution for your property and how travel, delivery and site works are priced.
Tasbuilt Homes
Westbury
Ask for quote
Westbury modular home provider. Ask which designs suit a secondary dwelling on your lot and who arranges approvals, delivery and service connections.
Rainbow Building Solutions
Sorell
Ask for quote
Tasmanian provider of steel-frame building options. Confirm the residential specification and the division of work between supplier, installer and certifier.
Cunic Homes
Hobart
Ask for quote
Hobart home builder listed for custom small-dwelling enquiries. Check current project availability and whether design and approval work form part of the contract.
Prime Design
Launceston / Hobart
Ask for quote
Tasmanian building design and drafting practice. Start here for plans and permit documentation; confirm separately who will contract for construction.
How to read this custom builder directory
What is different from a prefab module?
A custom build can be designed around your site and room requirements. Ask who manages design, approvals, foundations and construction, then compare the complete scope with a modular proposal. Neither approach is automatically cheaper or suitable for every block.
Who signs off energy and structure?
Ask the builder to identify the responsible engineer, energy practitioner and certifier or building surveyor for your jurisdiction. The ABCB publishes the NCC. Confirm the applicable compliance pathway and supporting documents before construction.
How should I use these cards?
Call with overlays, sewer distance and whether you want a rental or family occupancy. The Granny Flat Guide Team lists public builder details; we are not a builder and we do not take a commission on the jobs you book.
Primary sources
Size caps, approval pathways and dollar bands on this page are planning ranges. Check the current official page before you lodge or sign.
- NSW Planning Portal
- Victorian planning
- Queensland planning
- WA planning (DPLH)
- PlanSA
- Australian Building Codes Board
See our editorial standards for how we research and update guides.
Choose your state, then contact a shortlist with the same survey, bedroom requirements and inclusions list. Ask whether each business provides construction, design only or a delivered module.
Is it worth the premium?
The “Turnkey” Premium
Why a managed build costs more, and when that extra is money well spent.
You are paying for risk management
Compare what each builder takes responsibility for: design, approvals, trade coordination, site supervision and handover. Ask for a written scope and check the licence, insurance and warranty requirements for your state before signing.
Directory disclaimer: This is a curated list of Australian builders specialising in secondary dwellings, listed for free to help you start your research. A directory listing is a starting point for research, not an endorsement or guarantee of the builder's work. Do your own due diligence, check licences, and request insurance certificates before signing.
Avoid the trap
The “Prime Cost” Trap
Check the allowances before comparing the total.
Choose fittings before comparing allowances
Ask the builder to explain every allowance and how changes are charged. Choose fittings and finishes early, then request an updated inclusions list and written prices. Compare quotes using the same selections and scope.
Don’t Start Building Without a Budget
Allow for the dwelling, site works, approvals and connections before comparing supplier prices. Our calculator helps you assemble an initial budget.
- Estimate site costs (excavation, slab, crane)
- Compare kit, modular and custom build types
- Four-phase breakdown with instant results
Have a budget? Send us an enquiry or compare listings against your estimate.
Weighing Up Another Build Method?
The right path comes down to your budget, timeline and how hands-on you want to be. Compare the other two options.
