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.

Why E2ES — Nine Reasons Landlords Stop Comparing Quotes · Melbourne, Brisbane, Gold Coast & Sydney

Why E2ES

Nine reasons landlords
stop comparing quotes.

End-to-End Accountability

Design, permit, build, lease, manage — all one company, one contract. If anything goes wrong, there is nobody else to blame and nobody else to chase.

Fixed Price Guarantee

Your quote at signing is your price at handover. We absorb trade cost volatility so your rental cash-flow model doesn't need a contingency budget.

Class 1a Compliance Built In

Every plan is engineered to stay under the Class 1b threshold — up to 3 leases on your lot, no rooming-house licence, no extra council compliance tax.

40+ In-House Trades

We don't sub-contract critical path. Our own carpenters, plumbers, electricians, tilers and painters are on salary — so no-shows and cost blow-outs disappear.

Rent-First Design

Every floor plan has been torn down and rebuilt based on actual rental enquiry data from 300+ managed tenancies. We design for what tenants pay for.

Managed by OptimaRea

Same team who built the flat can lease and manage it — 1:50 manager ratio, Tapi AI 24/7 maintenance, 5.5%+ average yield on completed projects.

Best Australian Materials

BlueScope Colorbond steel roof, James Hardie fibre-cement cladding, CSR Bradford insulation, Australian MGP10 pine frame. The best locally-made materials in the market — not import-grade substitutes — on every build, at the same fixed price.

Real Concrete Slab Foundation

Every E2ES flat sits on an engineered reinforced concrete slab (AS 2870) — the same foundation as a full-size home. Cheaper portable units sit on steel stumps or trailer chassis: they feel temporary, rent for less, and add less to your valuation.

Proven Multi-Lease Track Record

We don’t just build for multi-tenancy — we run it. OptimaRea manages 300+ tenancies including dual-living, room-by-room and multi-lease setups, all Class 1a compliant (up to 3 leases per lot, no rooming-house licence). Ask any other builder for their leasing ledger.

Typical Builder & Separate PM

E2ES

Parties in the project

3–5 (designer, builder, certifier, PM, leasing)

1 — E2ES

Contracts to sign

Decision → finished build

4–7 months (Melbourne typical)

2 months — 1 mo paperwork + 1 mo on site

Foundation

Steel stumps / trailer chassis (portables)

Engineered concrete slab (AS 2870)

Materials

Mixed / import-grade to hit a price

Australian-made: Colorbond, James Hardie, CSR Bradford

Who chases the permit

You (or a paid consultant)

E2ES, included

Who finds the first tenant

Separate leasing agent

E2ES leasing team

Multi-lease / room-by-room experience

Rare — build-only companies

300+ tenancies incl. dual-living multi-lease

Who manages ongoing

Third-party PM at 1:170 ratio

OptimaRea at 1:50 ratio

Single point of accountability

Yes

Keep exploring

Design & order online Granny flat cost FAQ

Free Site Assessment

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Tell us your address and which of the three plans you're drawn to. We'll review council overlays, confirm feasibility, and come back with a fixed-price quote, indicative rent and yield — all in writing, no obligation.

Sales & Feasibility

+61 480 099 909

hello@e2es.com.au

Office

Suite 631, Waterman Workspace, 44 Lakeview Drive, Scoresby VIC 3179

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