Australia's Most Wasted Space: The Room-by-Room Guide to Claiming Dead Space in Your Home and Garden

By SmartStorage.au | July 2026 | The storage guide nobody else has written

 

Here is a fact about your home that's hiding in plain sight: you almost certainly have more usable storage space than you think you do. Not in a drawer-organisation-hack way. In a genuine, physical, measurable way.

The strip beside your house between the fence and the wall. The space under your deck that's currently holding a deflated pool toy and a rusted watering can. The corner of the garage that somehow became the default home for things without a home. The section of fence line that's been garden-tool-leaning territory for three years. The area under the stairs that you've been 'going to sort out' since you moved in.

These spaces exist in almost every Australian home - apartments, townhouses, suburban houses, small blocks, large blocks. They're not wasted because they can't be used. They're wasted because nobody has thought specifically about how to use them. Until now.

This guide takes a different approach to storage. Instead of starting with the products and working out where to put them, it starts with the spaces - the specific, measurable dead zones in your home - and works out exactly which storage solutions fit them. Some of these spaces are worth tens of thousands of dollars in effective storage capacity. Most of them can be transformed for a few hundred dollars or less.

Practical. Specific. Australian. Let's get into it.

⚡  How to use this guide: Start with the Dead Space Audit table - scan it for your spaces. Then read the section for each dead space you have. Measure before you read the product recommendations. Every solution in this guide has been matched to real Australian home dimensions, not aspirational ones.

 

1. The Dead Space Audit - Does Your Home Have These?

Before anything else, identify which of these dead spaces your home has. Most Australian homes have at least three. Many have five or six. Scan the table, tick the ones that apply, and jump to the relevant section.

 

Dead space	Typical size	What it can hold	Best solution
Side passage (narrow)	1.2–1.5m wide	Slimline shed - full garden storage	SpanBilt Slimline 1.76m × 1.07m
Side passage (wider)	1.5–2m+ wide	Compact or medium shed	Any shed under 1.5m deep
Under-deck space	Variable height	Outdoor storage box or low-profile shed	490L–775L storage box
Carport side strip	0.5–1.5m wide	Wall-mount storage, bikes, tools	Wall-mounted shelving or rack
Garage dead corners	0.6–1.2m corner	Shelving unit - 150kg per shelf	1.5m or 1.8m shelving unit
Apartment courtyard	Often 2–4m²	Slimline shed or lockable storage box	Slimline shed or 490L box
Unused fence line	Any length × 0.5m+	Outdoor boxes end-to-end or slimline shed	Storage boxes or slimline shed
Garage ceiling void	Full floor area	Ceiling-mounted racks for seasonal items	Overhead storage racks
Under-stair void	Variable	Shelving or outdoor locker cabinet	Storage cabinet or shelving

 

📏  The first rule of claiming dead space: Measure before you look at a single product. The number of people who buy storage solutions for a space they haven't properly measured - and discover a mismatch on delivery day - is very high. A tape measure, two minutes, and a note on your phone. That's the starting point for every section in this guide.

 

Dead Space 1  📐  The Side Passage The most overlooked storage opportunity in the Australian home

 

The side passage - that strip of land between your house and the fence - is the most consistently wasted space in Australian residential properties. It exists on almost every house block. It's typically between 1.0m and 2.0m wide, often the full length of the house, and in the vast majority of homes it's being used for... absolutely nothing. Maybe a hose reel. Maybe a wheelie bin. Maybe a bike that's been there so long it's partially subsumed into the shrubbery.

The reason it stays wasted is simple: people assume a shed can't fit there. Standard sheds start at 1.5m deep - which rules out most side passages entirely. And so the space sits empty, year after year, while people pay for self-storage units or cram things into garages that can't accommodate them.

This assumption is wrong. And it's exactly the problem the SpanBilt slimline shed was designed to solve.

 

What Actually Fits in a Side Passage

The key measurement is width - the distance from your house wall to your fence. Here's the honest breakdown:

•        Under 1.0m wide: no shed will fit. Your options are wall-mounted hooks, a narrow storage locker, or accepting the passage as a utility corridor only.

•        1.0m–1.2m wide: very tight. The SpanBilt slimline at 1.07m deep can technically fit but leaves minimal clearance. Measure at multiple points - passages are often narrower at one end.

•        1.2m–1.5m wide: this is the slimline shed's sweet spot. 1.07m shed depth leaves you 13–43cm of clearance - enough to work around it comfortably and open the door without pressing against the fence.

•        1.5m–2.0m wide: excellent. The slimline shed fits with room to spare, or you could consider a deeper compact shed.

•        2.0m+ wide: you have more options than you think. A standard compact shed or even a medium shed could fit depending on the length available.

 

Your space width	Your space depth	Shed that fits	Notes
1.2m–1.5m	1.1m+	SpanBilt Slimline 1.76m × 1.07m	Measure at narrowest point - check for posts or protrusions
1.5m–1.8m	1.2m+	Compact sheds from 1.6m range	Check door swing clearance if hinged doors
1.8m–2.4m	1.3m+	Medium sheds 1.8–2.4m wide	Most popular size range
2.4m+	2m+	Large or XL shed range	Council permit check if over 10m²
Under 1.2m	Any	No shed - outdoor storage box	490L–775L boxes fit in very tight spaces

 

⭐  HERO PRODUCT - The Slimline Shed That Started This Guide SpanBilt Tall Narrow Slimline Garden Shed - 1.76m × 1.07m × 2.03m The shed engineered for the spaces every other shed ignores. At 1.07m deep and 1.76m wide, it fits a 1.2m side passage with room to spare. The 2.03m height (1.8m front skillion, 2.03m rear) means 4–5 tiers of internal shelving - every centimetre of that narrow footprint becomes vertical storage. The 98cm door width takes a bike stood upright, a mower, or a full shelving unit rolling through. Wind-rated for Regions A, B and C. Made-to-order in Brisbane, 15-year structural warranty, five Australian heritage colours. This is not a compromise product. It's a purpose-built solution for the spaces Australian homes have always had but never used. ✅ Fits: Side passages from 1.2m wide · Apartment courtyards · Narrow deck ends · Townhouse garden strips · Under-deck openings (check height) From $749.95   → Shop SpanBilt Slimline Shed →

 

The Vertical Advantage - Why the Slimline Shed Stores More Than It Looks

Here's the counter-intuitive thing about slimline sheds that most people miss. A 1.07m deep shed sounds like token storage - surely it can't hold much? But the 2.03m height changes that calculation entirely.

Install four shelving tiers inside a 2.03m shed and you have approximately 6.8 square metres of usable shelf area in a 1.9 square metre footprint. That's better space efficiency than most standard sheds, because standard sheds are often too deep to use the back effectively - things get buried and lost. In a slimline shed, everything is visible from the door. Nothing gets lost at the back because there is no back. It's all front.

The 98cm door width is specifically worth noting. It's wide enough for a bike stood upright, a standard shelving unit rolling in on wheels, or most garden tools held horizontally. This isn't a shed you have to squeeze things into - it's a shed designed for real access.

 

💡  Measure your side passage at three points: near the house, in the middle, and near the back fence. Passages are often not perfectly parallel - one end is sometimes narrower than the other. Use the narrowest measurement as your planning dimension, not the widest.

 

Dead Space 2  🏠  Under the Deck Potentially your largest storage void - and usually the most neglected

 

The space under a raised deck is one of the most significant storage opportunities in any Australian home that has one - and one of the most consistently ignored. In a standard 4m × 3m deck with a 600mm clearance at the low end, you're looking at potentially 4–6 cubic metres of sheltered space. That's enormous. The average self-storage unit is about 9 cubic metres. You may have more than half a self-storage unit's worth of space sitting under your deck right now, holding nothing.

The challenge is the variable height. Decks slope, joists protrude, and the clearance changes across the space. This makes standard sheds impractical - but outdoor storage boxes and specific low-profile solutions work brilliantly.

 

What Works Under a Deck

•        Height under 600mm: flat storage only - rolled hoses, flat outdoor rugs, flexible bags of items. Nothing rigid.

•        600mm–900mm: outdoor storage boxes on their sides accessed by sliding the lid, or purpose-built under-deck storage that lies flat.

•        900mm–1.2m: standard outdoor storage boxes fit well in this range - the 490L and 775L options slide in easily and the lid operates normally.

•        1.2m–1.6m: excellent height. Storage boxes stack, or you can run shelving units along the back wall under the deck.

•        1.6m+: you can stand in this space - it becomes a genuine outdoor storage room. Shelving units, storage boxes, tool racks, the works.

 

📦  Gardeon 490L Outdoor Storage Box - Lockable Weatherproof The right scale for most under-deck spaces. 490 litres of weatherproof, lockable storage in a format that handles Australian outdoor conditions. UV-stabilised, good lid seal, doubles as bench seating at deck edge. Slides under most standard deck heights at 900mm+. $184.95   → Shop 490L Storage Box →

 

📦  Large Outdoor Storage Box 775L - Lockable Weatherproof For under-deck spaces with 1.0m+ clearance and a reasonable footprint. 775 litres is significant capacity - outdoor furniture cushions, pool equipment, camping gear, and seasonal items all in one container. Lockable and weatherproof. $259.95   → Shop 775L Storage Box →

 

💡  Under-deck storage works best when it's on a slightly raised surface rather than directly on soil - moisture from the ground will affect anything stored at ground level over time. Even a simple paver base lifts storage containers off damp earth and extends the life of everything inside them.

 

Dead Space 3  🔧  Garage Dead Corners The zones every garage has and nobody uses properly

 

Walk into the average Australian garage and look at the corners. Not the walls - the corners specifically. In almost every garage, there are two or three corner areas that have become the default dumping ground for things that don't have a better home. Partially because corners are genuinely awkward to work with. Partially because most storage products are designed for flat walls, not corners. And partially because the corners are where things go when you're in a hurry and the intention to sort them 'properly later' hasn't materialised in three years.

Corners represent genuinely useful floor area. A 1m × 1m corner - typical for a single-car garage - is a square metre of floor space that a shelving unit can occupy productively. Two such corners on the same wall become the start of a proper storage wall. The key is treating the corner as a feature to design around rather than a problem to ignore.

 

The Corner Shelving Approach

A single 1.5m shelving unit placed in a garage corner - perpendicular to the longer wall - creates immediate organisation in a space that currently holds random overflow. The 30cm depth of the 1.5m units is specifically well-suited to corners: it's narrow enough to not obstruct movement along the wall, but deep enough to hold genuine items rather than just small parts.

For larger corner areas, two 1.8m units placed at right angles - one on each wall meeting at the corner - create a connected L-shaped storage zone that looks intentional rather than ad hoc. Join them at 90 degrees and you have a continuous storage run from one wall to the next.

 

🔧  Heavy Duty 1.5m Shelving Unit 150kg Per Shelf The corner unit. 30cm depth, 1.5m height, five shelves. Specifically suited to garage corners and shed interiors where you want organisation without losing walkway space. Boltless assembly — up in 20 minutes. The starting point for turning any dead corner into used space. $79.95   → Shop 1.5m Shelving →

 

🏗️  Heavy Duty 1.8m Shelving Unit 200kg Per Shelf For garage corners with more height to work with. 200kg per shelf, boltless, five adjustable shelves. Two of these at right angles in a garage corner creates a proper L-shaped storage zone - the combination that transforms a corner from a dumping ground into a functional system. $131.95   → Shop 1.8m Shelving →

 

Dead Space 4  🏢  Apartment Courtyards & Townhouse Gardens Small outdoor space doesn't mean no storage options

 

The assumption that apartments and townhouses can't have a shed is one of the most common and most limiting beliefs in the Australian storage space. It's not true - and the SpanBilt slimline range was designed specifically to challenge it.

A 2m × 2m courtyard - genuinely compact - can accommodate a slimline shed along one wall and still leave 1.6m × 2m of usable outdoor space. A 3m × 2m courtyard with the shed against the longer wall gives you nearly half the space back as a clear outdoor area. The slimline's 1.07m depth is the critical dimension: it's narrow enough to be genuinely space-efficient even in the smallest outdoor areas.

For apartments and townhouses specifically, there are three additional considerations worth knowing about.

 

The Strata/Body Corporate Question

If you're in a strata-titled property - apartments, many townhouse complexes - you typically need owners corporation or body corporate approval before installing any outdoor structure, regardless of size. This is not a bureaucratic formality to ignore. Structures installed without approval can result in forced removal at your cost. Check your by-laws and submit an approval request before ordering anything. In most cases, a well-presented application with product specs and a photo of the proposed location gets approved straightforwardly - strata committees are generally reasonable when presented with a neat, appropriate-scale shed rather than a vague request.

 

Rental Properties

If you're renting, a permanent shed requires landlord permission and is unlikely to be approved because it's a structural addition. The better option for renters is a large outdoor storage box - it requires no installation, leaves no marks, and can move with you. The 490L or 775L storage boxes handle most of the storage problems that prompt people to think about sheds, without the permission complexity.

 

📦  Outdoor Storage Bench 200L - Wooden, Natural Finish The apartment and rental property solution. 200L hidden storage in a piece of outdoor furniture that looks like it belongs on a courtyard deck - not like a storage container. No installation required, no landlord issues, can be taken when you move. Handles cushions, tools, pool accessories and outdoor seasonal items. $266.99   → Shop 200L Storage Bench →

 

🏢  Strata tip: When applying for strata approval for a slimline shed, include: the product dimensions, a photo of the proposed location, the colour choice (heritage colours like Slate Grey or Rivergum read as intentional and tasteful rather than industrial), and confirmation that it will be secured to a proper base. Applications framed as 'I'd like to install a SpanBilt 1.76m × 1.07m storage shed in the courtyard corner' are far more successful than vague requests.

 

Dead Space 5  🌿  The Fence Line Linear space that most Australians literally walk past every day

 

The fence line is the dead space hiding in the most obvious possible location. It's the long, narrow strip along the side or rear fence of your property - a strip that's usually at least 6–10m long in a suburban block, sometimes much longer. Most of that length, in most properties, holds nothing except the occasional forgotten plant pot.

The fence line is ideal for storage solutions because it's out of the way, it doesn't interrupt the usable area of the garden, and the fence itself provides a natural back wall for wall-mounted storage. The question is always: what's the distance from the fence to the nearest obstacle (house, garden bed, another fence)?

 

Fence Line Solutions by Available Depth

•        Under 0.5m depth from fence: wall-mounted bike hooks, hose reels, garden tool racks. No floor-standing storage practical.

•        0.5m–1.0m depth: outdoor storage boxes in a row along the fence - these are typically 60–80cm deep, fitting comfortably in this range.

•        1.0m–1.2m: slimline shed territory. A SpanBilt slimline positioned along the fence line with its depth running perpendicular to the fence turns a fence line strip into a genuine storage run.

•        1.2m+: standard compact sheds fit, or multiple storage boxes end-to-end creating a continuous storage zone.

 

The fence line approach works particularly well when you have a longer strip - say 4–6m available. Two slimline sheds side by side along a fence creates over 3m of storage frontage with 1.07m depth: an exceptionally space-efficient arrangement that a conventional shed couldn't match on the same footprint.

🤝  An honest note on fence line sheds: Before installing anything close to a property boundary, check your local council's setback requirements. In most Australian states, structures need to be at least 0.9m from the side and rear boundary - though this varies by state and local council. A slimline shed positioned along the fence might need to be set back from it rather than touching it. Check with your council or use their online planning portal. Most residential sheds under 10m² don't need a permit but do need to meet setback requirements.

 

Dead Space 6  ⬆️  The Garage Ceiling The single most unused surface in most Australian homes

 

Look up the next time you're in your garage. What's up there? If the answer is 'bare rafters and a fluorescent light,' you're looking at the most consistently ignored storage opportunity in the Australian home.

A standard single-car garage ceiling is approximately 6m × 3m - 18 square metres of overhead space. At a typical ceiling height of 2.4m, even with a car parked below and a clearance requirement of 2.0m, you have 400mm of usable vertical space across the entire ceiling. Ceiling-mounted storage racks — flat, overhead platforms that hold seasonal and infrequently accessed items - turn that space into a practical storage zone for things you need occasionally rather than daily.

 

What Belongs on Ceiling Storage

•        Seasonal items: Christmas decorations, Easter supplies, seasonal sports equipment, holiday gear.

•        Camping equipment: tents, sleeping bags, camp chairs - bulky but rarely needed.

•        Spare building materials: leftover tiles, timber offcuts, paint tins for touch-ups.

•        Sports equipment: surfboards, kayak paddles, winter sports gear stored through summer.

•        Luggage: suitcases that only come out a few times a year.

 

The principle is simple: things you access a few times a year belong at the top. Things you use weekly or monthly belong at eye level or below. Ceiling storage clears the ground and wall zones for the items you actually use regularly, which is where the productivity of a well-organised garage comes from.

💡  Before buying ceiling storage, measure your garage door opener mechanism if you have one. The opener rail typically runs along the ceiling centre line and can limit ceiling storage placement on that line. Work around it rather than against it - ceiling storage on the sides works just as well.

 

7. Dead Space FAQs - The Questions That Come Up Every Time

 

Q: How narrow can a side passage be for a shed to fit?

A: The minimum practical width for a slimline shed is around 1.2m - this gives you the 1.07m shed depth plus approximately 13cm of clearance on one side. Anything under 1.2m makes a shed impractical (you can't comfortably open the door or work around it). Under 1.0m and a shed is genuinely not an option - look at wall-mounted storage, outdoor storage lockers, or accepting the passage as a utility corridor. Always measure at the narrowest point, which is often at a post, gas meter, or point where the fence angles.

 

Q: Do I need council approval for a slimline shed in a side passage?

A: In most Australian states, sheds under 10m² don't require a building permit - and the SpanBilt slimline at approximately 1.9m² is well under that threshold. However, setback requirements still apply: most councils require structures to be at least 0.9m from the side and rear boundary, which affects placement along a fence. If you're in a strata or body corporate property, you need owners corporation approval regardless of size. Check your state's planning rules and your local council's specific requirements before ordering - a quick online search of '[your council name] exempt development shed' usually gives you the answer in five minutes.

 

Q: What's the best storage solution for a rental property with a small courtyard?

A: For renters, the priority is storage that requires no permanent installation and can move with you. Outdoor storage boxes - particularly the 270L wooden storage bench or the 490L lockable box - are ideal: they require no anchoring, leave no marks on the property, and can be taken when you move. A slimline shed requires anchoring to a base (minimum 1.8m × 1.2m level concrete or pavers) and landlord permission, making it more suitable for owner-occupiers or long-term renters with a cooperative landlord.

 

Q: Can I fit a bike in a slimline shed?

A: Yes - the SpanBilt slimline has a 98cm door width, which accommodates a standard adult bike stood upright (most bikes are 55–65cm wide at the handlebars). You can typically fit 2–3 bikes in a 1.76m wide slimline shed depending on how they're arranged. For maximum bike storage in a slimline shed, consider hanging one or two bikes on wall hooks inside the shed rather than parking them on the floor - this frees floor space for other items and makes the bikes easier to remove.

 

Q: How do I use under-deck space that has variable height?

A: Variable height under a deck is common - most decks slope, have cross-joists at different heights, and have posts interrupting the space. The approach: measure the height at the lowest accessible point and use that as your limiting dimension. Outdoor storage boxes work well because they sit on the ground and don't need height clearance above them to function. Taller storage (shelving units) only works in the areas with consistent head height - typically the section of deck closest to the house where the deck is highest. Divide the under-deck space into zones by height and match the storage solution to each zone.

 

Q: How much does it cost to claim a typical dead space?

A: It depends on the space and the solution. A side passage transformed with a SpanBilt slimline shed: from $749.95 plus a simple concrete or paver base (DIY cost $80–$200 in materials). An under-deck area fitted with a 775L storage box: $259.95, no base required. A garage corner with two 1.8m shelving units: $179.90 for the pair. A fence line run with a 490L storage box: $184.95. Most dead space transformations cost under $400 in total - which is less than two months of self-storage rent for an equivalent volume. The ROI is almost always compelling when you do the numbers.

 

8. The One Thing That Makes All of This Work - Measure First, Always

Every section in this guide has come back to measurement. Not because we're being pedantic, but because the single most common mistake in dead space storage is buying a product for a space that hasn't been properly measured.

A slimline shed that's 1.07m deep sounds narrow - until you measure your side passage and discover it's 1.18m wide at the narrowest point, which makes the shed technically feasible but practically difficult to work around. An outdoor storage box that sounds perfect until you realise the under-deck access point is 65cm wide and the box lid opens the wrong way for the space.

These aren't hypothetical problems - they're the conversations we have with customers after a product arrives and the reality of the space becomes clear. The solution is always the same and it's always available before the purchase: tape measure, three measurements (width, depth, height), noted on your phone, checked against the product dimensions before you add to cart.

📏  The dead space measurement kit: Tape measure (3m minimum). Phone camera for photos. Note in your phone with: width at narrowest point, depth available, height at lowest point, any obstacles (posts, meters, pipes, drains). That's everything you need. Every product page on SmartStorage.au lists exact external dimensions. Match your space measurements to the product dimensions and add 10–15cm clearance on each side. That's the whole process.

 

The Space Is Already There - You Just Haven't Used It Yet

Every dead space in your home represents storage you're not using. Not storage you need to build, excavate, or renovate to create. Storage that's already there, already yours, already waiting.

The side passage that's been a graveyard for old bikes could hold a slimline shed with 6.8 square metres of shelf space. The under-deck area you walk under every day could hold the outdoor cushions, the camping gear, and the pool equipment. The garage corner that's been a visual blind spot for three years could hold a shelving unit that changes how the whole garage functions.

None of this requires a renovation. None of it requires council approval in most situations. Most of it costs less than three months of self-storage rent. All of it starts with a tape measure and five minutes of honest assessment.

If you've found a dead space you want to claim and you're not sure what fits - send us the measurements. We'll give you the honest answer about what works, what doesn't, and what the best option is for your specific space. That's what we're here for.

 

📐 Slimline Sheds Side passages, courtyards, tight spaces From $749.95 → Shop Slimline Sheds

📦 Outdoor Storage Boxes Under-deck, fence lines, courtyards From $59.95 → Shop Outdoor Boxes

🔧 Garage Shelving Dead corners, ceiling voids, wall runs From $79.95 → Shop Garage Shelving

 

The space is already there. Time to use it.

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