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.

Our Process — 2 Months Decision to Done · E2ES Granny Flat Builder

One-Stop Service

Six stages. One team.

From the first site visit to monthly rent statements — E2ES is the single point of responsibility. No hand-offs between builder, town planner, leasing agent and property manager. One contract. One invoice path. One team to call. And a timeline nobody else in Melbourne publishes: 1 month of paperwork + 1 month of construction — 2 months from your decision to a finished build.

Site Assessment

1–2 weeks

Free on-site visit. Council check, overlays, setbacks, soil & service locations. We tell you in writing whether your lot works — before any contract.

Design & Working Drawings

Weeks 1–2 · paperwork month

Pick one of our three layouts. We adapt siting, orientation and facade to your lot and produce Australian-standard working drawings. Because the three designs are pre-engineered, drawings that take other builders a month are done in days.

Permits & Approvals

Weeks 2–4 · paperwork month

We lodge and chase the building permit end-to-end via our private surveyor — owner has zero paperwork. Under Victoria's small second dwelling reform (Amendment VC253), most lots need no planning permit at all, so the whole paperwork stage closes in ~1 month. Overlay sites (heritage, bushfire, flood) are flagged in writing before contract.

Construction

4 weeks on site

One fixed-price contract. One site supervisor. Pre-cut frames and a rehearsed 4-week site sequence on an engineered concrete slab — the same three designs, built hundreds of times, is why one month on site is enough. Finishes locked at signing, no variation upsells.

Leasing

2–3 weeks

Our leasing team begins advertising 5 days before handover. 4-point tenant screening, 48-hour application turnaround. Bills-included strategy where it maximises return.

Ongoing Management

Forever, if you want

Hand it off to OptimaRea — the same team that built the flat now manages it. 1:50 manager ratio, Tapi AI for 24/7 maintenance, quarterly inspections.

Site Assessment

1–2 weeks

Free on-site visit. Council check, overlays, setbacks, soil & service locations. We tell you in writing whether your lot works — before any contract.

Design & Working Drawings

Weeks 1–2 · paperwork month

Permits & Approvals

Weeks 2–4 · paperwork month

Construction

4 weeks on site

Leasing

2–3 weeks

Our leasing team begins advertising 5 days before handover. 4-point tenant screening, 48-hour application turnaround. Bills-included strategy where it maximises return.

Ongoing Management

Forever, if you want

Hand it off to OptimaRea — the same team that built the flat now manages it. 1:50 manager ratio, Tapi AI for 24/7 maintenance, quarterly inspections.

What you receive at each stage

Full transparency, every step.

01Site Assessment

·Feasibility memo
·Lot suitability score
·Indicative rent + yield
·Fixed-price quote

02Design & Working Drawings

·Site plan + floor plan
·Elevations & sections
·Energy rating (6 Star)
·3D render preview

03Permits & Approvals

·Small-second-dwelling check (VC253)
·Building permit
·Soil report + engineering
·CFA / water authority sign-off

04Construction

·Slab → frame → lockup → fitout
·Weekly progress photos
·Final inspection + occupancy
·Defect liability period

05Leasing

·Professional photos
·realestate.com.au listing
·Open inspections
·Lease signed & bond lodged

06Ongoing Management

·Rent collection + statements
·Routine + annual inspections
·Maintenance dispatch
·VCAT representation

Free Site Assessment

Start with a
30-minute site visit.

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

Six stages. One team.

Site Assessment

Design & Working Drawings

Permits & Approvals

Construction

Leasing

Ongoing Management

Full transparency, every step.

Start with a30-minute site visit.

Start with a
30-minute site visit.