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Australia’s Top Prefab & Modular Granny Flat Providers

Compare leading prefab providers in one place, with a clear breakdown of how modular, panelised and relocatable builds differ.

If you want a streamlined, predictable way to build, a prefab granny flat is hard to beat. Below we’ve gathered Australia’s leading providers so you can compare designs, delivery and inclusions side by side.

Know the difference

Modular vs Kit vs Prefab

“Prefab” is an umbrella term. The build method changes your delivery, site works and resale options.

Volumetric Modular

Built as a complete 3D box (or boxes) in a factory, arriving about 95% finished and craned onto screw piles.

Panelised Prefab

Walls and roof are built as flat panels (SIPs or timber frames), trucked to site and assembled like a jigsaw.

Relocatable

Built on a permanent steel chassis and designed to be moved again, so it can be sold separately from the land.

Hi-Tech Homes

Bringelly

$$$

Specialises in high-quality relocatable homes with a traditional country aesthetic. Built in factory, trucked to site.

Country StyleModularRelocatable

VanHomes

Berkeley Vale

Unique expanding homes that fold out. In NSW, they can often be installed without council approval as "caravans".

ExpandingNo CouncilRelocatable

Impala Granny Flats

Sydney

Offers a fast modular construction process. Ideal for tight timelines in the Sydney metro area.

FastModernQuality

Avalon Granny Flats

Northern Beaches

$$$

Stunning architectural designs tailored for the Northern Beaches. Modular construction with a high-end finish.

ArchitecturalCoastalDesign

Uniplan Group

Armidale

The experts for regional NSW. They deliver fully finished homes to site, minimizing on-site trades.

RegionalCompleteModular

Prestige Kit Homes

NSW Wide

While known for kits, they offer modular solutions delivered on trucks for quick installation.

SteelKit/ModularOptions

Premier Homes

Bayswater

$$$

Massive display village in Bayswater. They build relocatable homes specifically for the "Dependent Person" market.

Display VillageDPUGranny Flats

Anchor Homes

Stratford / Melb

$$$

High-end architectural modular homes. Built in Stratford and delivered all over Victoria. Stunning designs.

LuxuryModularStatewide

Modscape

Brooklyn

$$$$

The pinnacle of modular design. They build complete modules with steel frames. Expensive, but incredible quality.

Ultra LuxurySustainableArchitect

Ecoliv

The Gurdies

$$$

Focuses on 7-star energy ratings and sustainable materials. Perfect for off-grid or eco-conscious builds.

Eco FriendlySustainableOff Grid

Swanbuild

Swan Hill

Traditional country style homes delivered in two or more modules. Great for rural Victorian blocks.

CountryTransportableCustom

Hoek Modular Homes

Brisbane

They deliver homes that are practically ready to move into. Excellent option for investors wanting speed.

Ready to MoveFastGranny Flats

Arkular

Gold Coast

$$$

Sustainable modular homes with a focus on connection to nature. Beautiful timber finishes.

SustainableArchitecturalCustom

The Little House Co

Sunshine Coast

Small footprint living with big style. They specialize in the Sunshine Coast aesthetic.

BoutiqueCoastalStylish

Westbuilt Homes

Warwick

The go-to builder for Western QLD. They build transportable homes designed for the harsh inland climate.

RegionalTransportableRural

Oly Homes

Yandina

Providing affordable transportable homes to QLD for over 40 years. Practical and durable.

FastAffordableTransportable

Modular WA

Wangara

Perth’s leading modular builder. They use a concrete floor on a steel chassis for a solid feel.

Steel ChassisPerthQuality

Fox Modular

Gnangara

$$$

Very modern, box-style designs. Perfect for contemporary backyards in Perth.

ArchitecturalModernDesign

TR Homes

Maddington

Specialists in delivering homes to remote WA. If you are in the Pilbara or Kimberley, call them.

RemoteRegionalAward Winning

Evoke Living

Northam

Family owned business serving the Wheatbelt region. Great service and solid construction.

WheatbeltTransportableFamily

Park Homes WA

Mandurah

Specialists in park homes and lifestyle village units. Very cost effective.

Park HomesBudgetSpeed

Sarah Homes

Mile End

SA’s most famous holiday home builder. They have a range of designs perfect for seaside blocks.

LifestyleHolidayModular

Rivergum Homes

Adelaide

A massive builder with a dedicated transportable division. Huge range of floor plans.

Major BuilderTransportableRange

Dechellis Homes

Adelaide

$$$

High-quality builder. While mostly site-built, they offer designs suitable for small blocks.

PremiumCustomQuality

Out-Back Portable

Regional SA

Simple, effective transportable buildings. Ideal for farm workers accommodation or spare rooms.

TransportableBudgetRural

Tasbuilt Homes

Westbury

$$$

The #1 choice for modular in TAS. They handle the entire process from council to keys.

PremiumModularStatewide

Podmatrix

Cambridge

$$$

Creates stunning architectural pods using Tasmanian timber. Very high-end aesthetic.

DesignArchitecturalCladding

Rainbow Building Solutions

Sorell

Offers both kits and full builds. Their steel frame system is perfect for Tasmanian conditions.

SteelKit/BuildLocal

Tasmanian Choice

Burnie

Reliable local builders for traditional and transportable construction options.

North WestLocalReliable

Due diligence

What to Ask Before Choosing a Prefab Provider

Three questions that separate a clean delivery from a budget surprise.

What does “turnkey” really mean?

The turnkey price often excludes the crane. With powerlines or trees in the way, a 100-tonne crane can cost around $10,000 a day. Get a site access check before signing.

Visit the factory or display home

Never buy off a floor plan alone. Inspect the frame quality and how modules are stored before delivery.

Chassis engineering and resale value

For relocatable homes, ask whether the chassis is rated for a single lift or multiple lifts. It affects future resale.

Don’t Start Building Without a Budget

Material costs and council fees shifted again in 2026. Avoid budget blowouts with our free granny flat feasibility calculator.

Estimate site costs (excavation, slab, crane)
Compare kit, modular and custom build types
Four-phase breakdown with instant results

Open the free cost calculator

Have a budget? Get free quotes to compare against your estimate.

Compare the alternatives

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.

DIY Kits

The owner-builder route. Save the builder margin on steel or timber kits.

Explore this option

Custom Home Builders

Licensed local builders for a fully bespoke granny flat.