How much does a granny flat cost in Australia in 2026?

E2ES fixed prices: 30 m² Compact Studio $110,000 + GST. 60 m² Two-Bedroom $170,000 + GST. 60 m² Dual Living (two independent studios on one footprint) $200,000 + GST. Cash down is ~20% of build cost (~$32k–$52k); the other 80% is a construction loan secured against the new building. All three include permits, slab, frame, cladding, roof, insulation, kitchen, bathroom, flooring, AC, hot water, plumbing and electrical rough-in, and connection to existing mains within 10 m sewer / 15 m cabling.

What is the cheapest granny flat builder in Melbourne?

E2ES's 30 m² Compact Studio at $110,000 + GST is the lowest fixed turnkey price in our July 2026 survey of Melbourne granny flat builders — fully finished, permits and connections included, on an engineered concrete slab. Surveyed competitors' entry turnkey prices start around $133k, and independent 2026 guides put a finished 2-bed at $150k–$255k all-in. Cheaper stickers are kit shells or portable units on steel stumps, or exclude permits/connections/appliances that add $20k–$60k once tallied.

What is a granny flat?

A granny flat (also called a secondary dwelling, ancillary dwelling unit, ADU, backyard studio, or backyard cabin) is a fully self-contained secondary residence built on the same lot as the main house. In Australia it sits on a single title (no subdivision), is Class 1a compliant under NCC 2022, and can be either lived in by family or leased to a tenant for rental income.

How long does it take to build a granny flat?

2 months from decision to finished build: ~1 month of paperwork (design + building permit — no planning permit needed on most Victorian lots under the small second dwelling reform, Amendment VC253) + ~1 month of construction on site (4 weeks; 4–5 for the Dual Living). Typical Melbourne builders quote 4–7 months. A tenant typically moves in 2–3 weeks after handover.

Do I need council approval for a granny flat?

A building permit yes, a planning permit usually no. Victoria's small second dwelling reform (Amendment VC253, Dec 2023) removed the planning-permit requirement for dwellings ≤ 60 m² on lots ≥ 300 m² — E2ES's private surveyor issues the Class 1a Building Permit in 2–4 weeks, so paperwork closes in ~1 month. In NSW, lots ≥ 450 m² use the SEPP Complying Development pathway (~10 days, no neighbour consent). Heritage Overlay or DCP/DCPO sites add 6–12 months. E2ES handles the entire permit process — owner has zero paperwork.

Can I rent out a granny flat as a separate lease?

Yes. All E2ES designs are Class 1a self-contained dwellings, which means up to 3 leases per lot (NCC 2022 Class 1b threshold) without requiring a rooming-house licence. The 60 m² Dual Living layout is two fully independent studios on one footprint, each leasable as a standalone tenancy.

What is the rental yield on a granny flat?

Gross yields on build cost: 30 m² studio ~16.3% ($380/wk on $110k), 60 m² two-bed ~13.9% ($500/wk on $170k), 60 m² dual ~16.5% ($700/wk on $200k). Net yields on cash down are significantly higher (~33% on the 30 m²) because 80% of the build is financed via construction loan, leveraging the owner's existing land equity.

Do E2ES granny flats sit on a concrete slab or steel stumps?

Always an engineered reinforced concrete slab (AS 2870.1 Class M/H, waffle-pod or raft) with termite management — the same foundation as a full-size home, included in every fixed price. Portable and prefab units that undercut on price sit on steel stumps or a trailer chassis, which rent for less and are valued differently by banks.

What materials does E2ES build with?

The best Australian-made materials in the market, locked into the contract by brand: BlueScope Colorbond steel roof (Lysaght Klip-Lok 700), James Hardie Scyon Axon fibre-cement cladding, CSR Bradford Gold insulation, Australian MGP10 H2 termite-treated pine frame, silica-free engineered stone benchtops, double-glazed aluminium windows.

Does E2ES have real multi-lease / room-by-room rental experience?

Yes. OptimaRea, E2ES's property-management arm, runs 300+ tenancies including dual-living and multi-lease setups — separate leases, separate bonds, sub-metered utilities. All Class 1a compliant: up to 3 leases per lot with no rooming-house licence. The 60 m² Dual Living plan was designed from that operating experience.

Can I build a granny flat in Brisbane / Gold Coast / Sydney?

Yes. E2ES operates across Melbourne, Brisbane, Gold Coast and Sydney. Brisbane and Gold Coast follow the Queensland Development Code MP1.1 (Secondary Dwelling) — typically 400–600 m² minimum lot. Sydney uses the NSW Affordable Rental Housing SEPP 2009 (450 m² minimum, 10-day Complying Development). All four cities use the same three E2ES floor plans.

Melbourne price survey · updated July 2026

Melbourne granny flat prices —
every builder, one honest table.

We put our price next to everyone else’s — advertised prices from each builder’s own website, captured July 2026, with what each price actually includes. E2ES’s $110,000 + GST Compact Studio is the lowest fixed turnkey price in the survey: fully finished, permits and connections included, on an engineered concrete slab — and delivered in 2 months, not 4–7.

$110k + GST

Lowest fixed turnkey price in our July 2026 survey — permits, connections, slab, appliances included

2 months

Decision → finished build (market typical: 4–7 months)

$100k / tenancy

60 m² Dual Living = two leasable studios on one slab — lowest cost per rental income unit

The comparison table (advertised prices, July 2026)

Builder	Product type	Advertised price	What the price includes	Foundation	Timeline
E2ES ★	Site-built turnkey	$110k–$200k + GST — fixed	Everything: building permit, engineered concrete slab, connections (10 m/15 m), kitchen, bathroom, flooring, AC, heat-pump hot water, appliances, occupancy certificate	Concrete slab (AS 2870)	2 months decision → done
Elpor	Portable factory-built	1BR from $132,900 · 2BR 60 m² $153,900	Near-turnkey: permit + connections included; transported unit	Not stated (portable unit)	8–14 weeks after permit
Superior Granny Flats	Relocatable prefab	Studio $117,900 unit-only (+$13,850 design/docs +$12,900–$19,900 connections ≈ $145k+ real)	Unit only — design & documentation and site connections charged on top	Relocatable footings	Not published
Todd Devine Homes	Portable prefab	1BR from $120,300 · 2BR from $151,600	Factory-built portable unit; connects to the main home’s services; permits/site works extra	Portable (typically stumps)	~8 months commencement → occupancy
iBuild (kit / supply+build)	Kit or assembled bundle	Kits from ~$31k (kit only) · built bundles $149k–$181k inc GST	Bundle excludes stumps, building permit + council fees, utility connections, soil test, painting	Slab or stumps (stumps excluded from price)	Not published
VanHomes	Expanding caravan-class unit	$41,690–$149,240 ex delivery	Chassis-based expanding unit; delivery + connections extra; not a fixed dwelling	Trailer chassis — no foundation	Same-day install (6–8 h)
Backyard Pods	Pod shell kit	~$23k–$53k (shell only, not habitable)	Shell only — fit-out, approvals, plumbing, kitchen/bathroom all extra	Slab or piers (extra)	Shell only
Ecoliv (EcoHaven)	Premium prefab modular	$214k–$271k + GST (1BR)	Premium sustainable prefab; solar/tanks/timber cladding are paid extras	Modular on footings	Factory queue dependent

Advertised prices captured from each builder’s public website in July 2026 (source links preserved; click a builder name). Inclusions summarised from the same pages — always confirm current pricing with each builder. E2ES prices exclude GST and site-condition variations beyond standard allowances, which we disclose in writing before contract.

Why the cheapest sticker is rarely the cheapest build

Independent 2026 Melbourne cost guides (Innovista, SKL, Benni Homes) put a finished two-bedroom granny flat at $150,000–$255,000 all-in, and warn that hidden extras — site prep ($10k–$25k), service connections ($8k–$18k), permits and reports ($8k–$15k), appliances ($4k–$8k) — add 30–50% to advertised prices.

Kit prices ("from $31k") buy you a flat-pack shell: no slab, no permit, no plumbing, no kitchen. Portable-unit prices skip the foundation entirely — the unit sits on steel stumps or a trailer chassis, which tenants hear underfoot, banks value differently, and some lenders won’t count at all.

E2ES publishes one number that is the number: fixed at signing, everything included down to the occupancy certificate, with the site-variance schedule (per-metre rates) disclosed in writing before you commit.

2 months vs the market’s 4–7

E2ES1 month paperwork + 1 month on site = 2 months

Typical Melbourne site builder2–4 wks design + 3–6 wks permit + 12–20 wks build = 4–7 months

Portable/prefab builders8–14 weeks after permit; Todd Devine quotes ~8 months commencement → occupancy

Every week of build time is a week of rent you don’t collect. At $380–$700/wk target rent, finishing 3–5 months earlier is worth $5,000–$14,000 of income before the market’s typical timeline would even hand over.

Is E2ES really the cheapest granny flat builder in Melbourne?

On a true turnkey basis — finished, permitted, connected, on a concrete slab — yes, in our July 2026 survey: E2ES 30 m² at $110,000 + GST vs the next-lowest turnkey entry price of ~$132,900. Products with lower stickers are kit shells, unit-only prices that add $26k+ in design/connection fees, or chassis-based units with no foundation. We keep this table updated and link every source so you can check us.

Why are portable granny flats cheaper?

They skip the foundation (steel stumps or trailer chassis instead of an engineered slab), build to a transportable spec, and usually exclude permits and connections. That saves the builder real money — but tenants pay less rent for them, bank valuers treat them as removable improvements, and resale buyers discount them. A slab-built Class 1a dwelling is valued like a house because it is one.

What does the E2ES fixed price include that others charge extra for?

Building permit and surveyor fees, soil test, engineered concrete slab, termite management, all connections within 10 m sewer / 15 m cabling, full kitchen with appliances, full bathroom, flooring, AC, heat-pump hot water, painting, occupancy certificate. The most commonly excluded items elsewhere — permits ($8k–$15k), connections ($12k–$20k), design documentation ($13k+) — are all inside our number.

How can E2ES be cheapest and still use the best materials?

Three fixed designs built hundreds of times: we buy Colorbond, James Hardie and CSR Bradford at volume rates, cut zero custom-design hours, and run our own salaried trades instead of paying subcontractor margins. The saving comes from repetition and vertical integration, not from thinner walls.

When were these competitor prices last checked?

All advertised prices were captured from each builder’s public website in July 2026. We re-verify the table quarterly. If you find a figure that has changed, tell us and we will update it — the table only works if it stays honest.

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Melbourne granny flat prices —every builder, one honest table.