Bright open-plan granny flat living and kitchen area with natural light and minimal furnishings

Living Rooms · Open-Plan Layouts

Open Plan Granny Flat Layouts: 2026 Ideas Guide

Q: Can I still separate the sleeping area from the living area in an open-plan granny flat?

Yes — and for a rental tenancy, you should. Open-plan typically refers to the kitchen, dining, and living areas being in one connected space. The bedroom is nearly always separated by at least a wall and door, for both privacy and NCC compliance. A sliding barn door, cavity slider, or a simple hinged door into the bedroom gives you openness in the living zone and privacy when you need it.

Smart layouts that make every square metre work harder

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An open plan granny flat layout removes the walls between kitchen, dining, and living areas — and in a 60sqm build, that decision changes everything. Done well, it makes a compact space feel airy, flexible, and larger than it is. Done poorly, it leaves you with a noisy, cluttered room that does nothing particularly well.

The ideas in this guide are sized for reality: 50–70sqm builds across NSW, WA, VIC, and QLD. Each layout shows you what actually fits, what the zoning trade-offs are, and roughly what it costs to finish the space. No oversized inspiration shots — every image is small-space plausible.

What Actually Fits in an Open-Plan Granny Flat?

Both layouts below are drawn to a 6m × 10m footprint (60sqm) — the standard CDC compliant size in NSW and most states. The difference is how you split the space.

Layout A — Galley Kitchen + Open Living

Best for: narrow blocks. Kitchen stays out of the eyeline from the sofa. Minimal wasted circulation space.

Layout B — Island Bench Zone Divider

Best for: wider blocks. Island bench creates a natural kitchen/living boundary without closing the space off. Adds bench seating too.

Open Plan Granny Flat Layout Ideas

Six layouts that work in real 50–70sqm builds — with an honest note on what makes each one worth considering.

Galley kitchen along one wall in a compact open-plan granny flat layout

Budget · A$800–$2,500

Galley Kitchen + Living Strip

Linear kitchen along one wall keeps the entire living zone clear. Best choice for blocks under 5.5m wide — no wasted circulation and easy to fit in a standard CDC footprint.

View Ideas →

Mid-Range · A$4,000–$9,000

L-Shaped Kitchen Open to Living

An L-shaped bench creates a natural boundary between kitchen and living without any wall. The corner maximises storage and leaves the main floor area fully open for furniture.

View Ideas →

Kitchen island bench acting as zone divider between cooking and living areas in a small granny flat

Mid-Range · A$5,000–$12,000

Island Bench as Zone Divider

A freestanding or fixed island bench visually separates kitchen from living while keeping the sightlines open. Adds bench seating too — useful when dining space is tight.

View Ideas →

Studio granny flat with fold-down wall dining table to maximise floor space

Budget · A$1,200–$3,500

Studio with Fold-Down Dining

A wall-mounted fold-down table disappears when not in use, reclaiming 1.5–2sqm of floor space. Works well in studios under 45sqm where a fixed dining set would dominate the room.

View Ideas →

Sliding barn door separating open-plan living from bedroom in a granny flat for privacy at night

Mid-Range · A$1,800–$4,500

Sliding Barn Door to Bedroom

Open-plan by day, private at night. A sliding or cavity door between the bedroom and living area gives the flat flexibility for multi-use — home office, guests, or a rental tenancy.

View Ideas →

Full open-plan granny flat living area with stacker sliding doors opening onto an outdoor deck

Premium · A$8,000–$18,000+

Full Open-Plan with Deck Flow

Stacker sliding doors extend the living area onto a deck, effectively doubling usable space when the weather allows. Most impactful in QLD and NSW coastal builds — note: deck size may require DA.

View Ideas →

Shop the Look

Feature wall wallpapers and wooden décor used across these layouts — all with fast Australian delivery.

Wallpaperdirect AU

Josette Wallpaper

by Laura Ashley — Amethyst

A$139.00 per roll

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Wallpaperdirect AU

Love Letter Wallpaper

by Andrew Martin — Parchment

A$274.00 per roll

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Wallpaperdirect AU

Pushkin Wallpaper

by Cole & Son — Pastel

A$433.00 per roll

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Enjoy the Wood

3D LED Wooden World Map

Multicolour — Multiple sizes

AUD $581.00

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* Affiliate links — we may earn a small commission at no extra cost to you.

What Does an Open-Plan Layout Cost in Australia?

Finishing costs for the open-plan zone only — kitchen, flooring, joinery, and living area. Excludes the structural build cost of the granny flat itself.

Budget

A$800–$4,000

Flat-pack kitchen (IKEA/Bunnings), laminate flooring, basic lighting. Galley or linear layout. Self-managed finish.

Mid-Range

A$4,000–$12,000

Semi-custom joinery, stone or engineered timber benchtop, island bench, pendant lighting, quality flooring throughout.

Premium

A$12,000–$25,000+

Custom cabinetry, stacker door system, deck integration, architect-specified finishes. Typically contractor-installed end-to-end.

See full granny flat build costs across Australia →

Will Council Approve an Open-Plan Layout?

Open-plan itself is a design choice, not a regulatory trigger — council doesn’t care whether your kitchen is separated from your living area. What they do care about is the total build footprint, ceiling height, and how the structure sits on the lot.

A few things that can create compliance requirements when going open-plan:

Total floor area: Must stay within your state CDC limit — 60sqm in NSW, 70sqm in WA. Open-plan doesn’t change this, but removing internal walls can tempt builders to push into storage alcoves that were previously excluded from the floor area count.
Natural ventilation: Open-plan living zones still need adequate cross-ventilation and natural light. Large open areas with only one window may not meet the NCC habitable room requirements.
Stacker doors to deck: If your open-plan flows onto a new deck, the deck itself may trigger a separate DA, particularly if it’s raised or sits within your setback boundary.
Smoke alarm placement: Open-plan layouts change the required smoke alarm positions under AS 3786. Your certifier will advise, but factor it into your plans early.

Check your state’s full granny flat regulations →

FAQs — Open Plan Granny Flat Layout

Is an open-plan layout cheaper to build than a divided floor plan? ▾

Not necessarily — and sometimes it’s more expensive. Removing internal walls means the kitchen benchtop, appliances, and cabinetry are in full view at all times, which usually pushes finishes up-market. The structural build cost may be slightly lower (fewer wall frames, less plasterboard), but you’ll often spend the savings on better joinery or flooring to make the visible space look cohesive. A divided layout can actually let you use lower-cost finishes in the kitchen without it affecting the living room feel.

Can I still separate the sleeping area from the living area in an open-plan granny flat? ▾

Yes — and for a rental tenancy, you should. “Open-plan” typically refers to the kitchen, dining, and living areas being in one connected space. The bedroom is nearly always separated by at least a wall and door, for both privacy and NCC compliance (habitable rooms require adequate sound and light separation). A sliding barn door, cavity slider, or a simple hinged door into the bedroom gives you the best of both — openness in the living zone, privacy when you need it.

What is the minimum size for an open-plan granny flat to work well? ▾

Around 45sqm is the practical lower limit for a comfortable open-plan 1-bedroom granny flat. Below that, the kitchen, dining, and living zones start competing for the same floor space. Studios (no separate bedroom) can go down to 25–30sqm in an open-plan format without feeling cramped, provided the furniture is scaled correctly and there’s smart storage. For a rental that needs to feel like a proper dwelling — rather than just a studio room — aim for 50sqm or above.

Does an open-plan layout affect rental income for a granny flat? ▾

Open-plan layouts tend to photograph well and attract tenants quickly, which can reduce vacancy periods. Whether they command higher rent depends more on overall size, finishes, and location than layout alone. One thing to note for investors: an open-plan granny flat used by an ageing parent, then later converted to a rental, will need to meet the applicable minimum standards for tenancy in your state — check your state regulator’s rental property standards before assuming the layout is compliant for tenancy without modification.

The right open-plan granny flat layout comes down to one thing: your block width. Narrow blocks under 5.5m suit a galley or linear kitchen against one wall. Wider blocks open up the island bench and L-shape options. Either way, keeping the open-plan area to kitchen, dining, and living — with the bedroom properly separated — gives you a space that works both as a family annexe and a future rental. If you’re still deciding on size or council approval, the guides below are the right next step.