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What size shed do you need for your bikes? It depends on three things: how many bikes you’re storing, what else needs to fit alongside them, and how you’re going to make all your items accessible once you’ve got everything stored together.
Two adult bikes can fit in a shed as small as 6×3 if you overlap the handlebars. But that might not be all you’re keeping in there. If it’s not a dedicated bike shed and you’re keeping the bikes among other items as well, you’ll want a shed that offers both width and depth.
In 25 years of selling sheds to UK customers, we’ve learned that the majority of cyclists don’t just store bikes in their shed. The shed that holds the bikes also ends up holding the lawnmower, the barbecue in winter, the kids’ scooters, the hosepipe, the wheelbarrow, and a slowly accumulating pile of garden tools. Sizing for bikes alone underestimates the space most customers actually need.
That said, if a specialist bike shed is what you’re after, this guide still has you covered.
The minimum bike shed size
The answer depends on how you’re going to store the bikes. There are three patterns we see customers actually use.
Overlapping layout (most common, most space-efficient). Bikes face alternating directions so handlebars overlap above the next bike’s frame, and pedals stagger so they don’t collide. This is what most people end up doing, even if they didn’t plan it that way — it’s the natural result of trying to fit bikes into the space available.
Side-by-side / quick-access layout (for households that ride frequently). All bikes face the same direction with walking space between them, so you can grab any bike without moving another. More expensive in floor space but saves daily frustration.
Wall-mounted layout (for indoor or dedicated bike storage). Bikes hang vertically from hooks or horizontal mounts. Most space-efficient per bike, but requires the shed to have strong enough internal framing to take the mount — which most wooden sheds do, but many cheaper metal ones don’t.
Here are the minimum sizes for each layout:
| Bikes | Overlap (typical) | Quick-access (no moving bikes) | Wall-mounted |
|---|---|---|---|
| 1 bike | 6×2 or 5×3 | 6×3 | 4×3 |
| 2 bikes | 6×3 | 6×4 | 5×3 |
| 3 bikes | 6×4 | 6×6 or 8×4 | 6×3 |
| 4 bikes | 6×4 or 6×5 | 8×6 | 6×4 |
| 5 bikes | 6×5 | 8×6 or 10×6 | 6×4 |
A few honest caveats on these numbers. The “overlap” column assumes adult bikes of typical dimensions — 175cm long, 60-70cm handlebar width. Cargo bikes, tag-alongs, and bikes with very wide MTB handlebars all need more space and the figures don’t apply cleanly. The “wall-mounted” column assumes hanging bikes vertically by the front wheel; horizontal mounting takes more depth.
Shed dimensions in the UK are quoted as exterior measurements. Internal usable space is typically a few centimetres less in each direction once you account for wall thickness and door frames — and it’s worth checking whether the dimensions you’ve been quoted are wall to wall, or roof edge to roof edge, because there’s usually some overhang. If you’re working close to the minimum, check the internal dimensions on the specific shed you’re considering rather than assuming the external size is what you’ve got to work with.
For one or two bikes only, our Newbury Metal Bike Store is a dedicated bike-storage unit at a 6×7 footprint — designed specifically for bikes, secure and weatherproof, without the general-shed clutter to share space with.
If you’re after a wooden bike shed at the 6×3, 6×4 or 8×6 range, browse the full bike storage range.
Shed size for bike and other items
You’re probably not just storing bikes.
When we follow up with customers after delivery, the most common feedback isn’t about the bikes themselves. It’s some version of: *”I thought I’d bought a bike shed, but now we’ve started to cram other stuff in there, too.”*
So let’s be honest about what actually ends up in a “bike shed.”
The most common other items we see customers cramming in alongside their bikes:
- Lawnmower — almost always. Push or petrol.
- BBQ — seasonal but takes up real space when stored
- Garden tools — rakes, shovels, spades, brushes, hoes
- Hosepipe and reel
- Wheelbarrow
- Kids’ outdoor toys — scooters, footballs, plastic ride-ons
- Pots, compost bags, and the bag of grass seed you bought in March
- Garden cushions and parasol in winter
You don’t need all of these to make the shed feel cramped. Two bikes overlapped in a 6×3 shed will already be using all the available width — you can’t really put anything else substantial in there.
The issue isn’t just fitting it in. It’s about accessibility — making it so you don’t have to empty half the shed just to get that one thing you need this weekend. You don’t want to have to pull the bikes out to mow the lawn, and you don’t want to have to shift the lawnmower just to go on a bike ride.
Measuring your other items
Use a push lawnmower as your primary example for sizing — it’s the single most space-consuming item after the bikes themselves.
| Item | Width × Depth × Height (typical) |
|---|---|
| Push lawnmower (handle folded) | 50cm × 70cm × 110cm |
| Push lawnmower (handle extended) | 50cm × 130cm × 110cm |
| Petrol lawnmower (handle folded) | 55cm × 90cm × 105cm |
| Kettle BBQ | 60cm diameter × 95cm tall |
| 3-burner gas BBQ | 120cm × 60cm × 115cm |
| Wheelbarrow | 60cm × 130cm × 65cm |
| Garden tools (stored vertically) | 30cm × 30cm × 180cm |
| Hosepipe reel (wall-mounted) | 40cm × 25cm × 40cm |
| Kids’ scooter | 30cm × 70cm × 90cm |
A few of these are worth a second look. A push lawnmower with its handle extended is longer than most people remember — 130cm of depth in a 6×4 shed (about 170cm × 110cm internal) consumes most of the floor. A 3-burner gas BBQ is roughly as big as a small chest freezer. Garden tools stored properly against a wall take more floor space than you’d think if you don’t have a hook rail to hang them.
Shed size requirements based on bike position
The layout choice from Section 1 isn’t just about bikes — it also determines what else you can fit alongside them.
If you’ve chosen the **overlap layout**, you’ve optimised for bike density. Two bikes in a 6×3 shed use almost the full width — there’s no room for a lawnmower without going up to a 6×4 or 6×6. Overlap is the right choice if bikes are the priority and other items are secondary.
If you’ve chosen the **quick-access layout**, you’ve optimised for daily convenience. Two bikes side by side in a 6×4 shed already use more floor than two bikes overlapped — adding a lawnmower needs an 8×6 minimum.
If you’ve chosen the **wall-mounted layout**, you’ve freed up the floor. Two bikes mounted vertically on the wall leave the entire floor area for other things. A 6×4 wall-mounted bike shed will comfortably take two bikes plus a push lawnmower plus a kettle BBQ — something the same 6×4 can’t do with bikes on the floor.
Layout choice and shed size interact: a smaller shed with mounts can hold more total stuff than a larger shed with bikes on the floor. If you’re tight on garden space, mounts are the lever that gets you the most storage per square foot.
A practical principle from our customer experience: **bikes are used more frequently than the lawnmower or BBQ.** Whatever layout you pick, position the bikes for easy access — closest to the door, or on mounts you can lift down without first moving something else. If the bikes are blocked in behind the lawnmower, you’ll move the lawnmower every Saturday ride. After three weekends of this, the bikes stay in the shed. We’ve heard versions of this from customers more times than we can count.
Recommended shed sizes by number of bikes
Here are the quick answers for each bike count stored on its own. The sizes below reflect the overlap layout (the realistic default — see Section 1 for the full layout comparison).
What size shed for 1 bike?
A 6×2 or 5×3 shed fits one adult bike with overlap-layout storage. Size up to a 6×3 or 6×4 if you want walking space around the bike, plan to add helmet and lock storage, or expect the bike to be replaced with a larger model.
What size shed for 2 bikes?
A 6×3 fits two adult bikes facing opposite directions with overlapping handlebars. For quick-access storage where you can grab either bike without moving the other, step up to a 6×4. If a lawnmower is also going in, size up to a 6×6.
What size shed for 3 bikes?
A 6×4 fits three adult bikes in an overlap layout. For quick-access storage (no moving bikes to get one out), a 6×6 or 8×4 gives the extra room. The 6×4 leaves no room for other items — if anything else is going in the shed, size up.
What size shed for 4 bikes?
A 6×4 or 6×5 fits four adult bikes overlapped, with the wider 6×5 being more comfortable. Mounting the bikes vertically frees up the floor — four wall-mounted bikes fit in a 6×4 with space underneath for other items.
What size shed for 5 bikes?
A 6×5 fits five adult bikes overlapped. For quick access to any bike without moving the others, step up to 8×6 or 10×6. At five bikes, many families prefer a dedicated bike store alongside their main garden shed rather than one larger building shared with general garden kit.
Now the practical part. Here’s what we’d recommend for the most common situations.
The first column assumes the overlap layout (the realistic default for most customers). The second assumes quick-access or wall-mounted layouts where the bikes need more room or less, respectively.
| You want to store | Overlap layout | Quick-access or mounted |
|---|---|---|
| 1 bike + lawnmower | 6×4 | 6×6 |
| 1 bike + lawnmower + BBQ | 6×6 | 8×6 |
| 2 bikes + lawnmower | 6×6 | 8×6 |
| 2 bikes + lawnmower + BBQ | 8×6 | 10×6 |
| 3 bikes + lawnmower | 8×6 | 10×6 or 10×8 |
| 3-4 bikes + lawnmower + BBQ | 10×6 | 10×8 |
| Everything (bikes + mower + BBQ + tools + general garden kit) | 10×8 | 12×8 or 12×10 |
A few specific shed sizes worth browsing depending on which row matches your situation:
- For one-bike-plus-mower or two-bikes-only setups: 6×4 garden sheds
- For the most common family setup (2 bikes plus mower plus a BBQ): 8×6 garden sheds
- For larger families or anyone storing the full kit: 10×8 garden sheds
If you only need dedicated bike storage and want to keep your main garden shed for everything else, a separate bike-storage unit alongside a standard shed often works better than one oversized building trying to do both jobs. Our Newbury Metal Bike Store is designed for exactly this.
Other factors for choosing a bike shed
Three quick considerations that affect sizing more than you might expect.
Where you put the shed matters. Front gardens have stricter planning constraints and visual considerations; back gardens give you more flexibility but worse access for wheeling bikes through the house. We cover the planning question in our guide: Can you put a bike shed in the front garden?
Wooden vs metal. Wooden bike sheds suit larger setups where you might also store other garden kit, and they’re substantial enough to take wall mounts. Metal bike stores work brilliantly for dedicated bike storage in smaller footprints. Browse both at bike storage, or see our wider garden storage range if you want everything together.
Future-proofing. Bikes get bigger as kids grow. A 16-inch bike today is a 20-inch in two years and a 24-inch by the time they’re nine. If you’re sizing for a family with young children, give yourself one size of headroom over the strict minimum — the £100 extra at the time of purchase saves replacing the whole shed in three years.
Shop bike storage sheds by size
If you’ve got your size figured out, here’s where to start:
- 6×4 garden sheds — good for 1-2 bikes plus minimal extras (overlap) or 3-4 bikes mounted
- 8×6 garden sheds — the family-cycling sweet spot
- 10×8 garden sheds — for households storing bikes plus a full kit of garden equipment
- Full bike storage range — including dedicated bike sheds and stores
- Garden storage range — for the wider category
The dimensions in this guide are minimums and recommendations based on typical adult bikes and common garden items. Your specific bikes might be longer or shorter; your specific lawnmower might be wider or narrower. If you’re planning a tight fit, measure your actual gear before ordering rather than relying on the typical figures here. And if you’re stuck between two sizes and unsure, the helpful side of “Garden Buildings Direct” is genuinely staffed — give us a call on 01909 768840 and we’ll work through it with you.
