How Much Does It Cost to Build a Shed? A Real 2026 Breakdown

"How much does it cost to build a shed?" has one honest answer and a hundred caveats. The honest answer, for materials at current UK merchant prices: a small 6x4 lands around £950 ex VAT, a standard 8x6 around £1,250, and a roomy 10x8 around £1,550. This guide shows exactly where every pound goes, so you can see what to change to hit your budget, using real prices rather than guesses.

Cost by Size (Standard Apex, Shiplap, Felt Roof)

These are real material totals from our builder for the most common specification: an apex shed clad in shiplap, with a felt roof, timber floor and single door. Include VAT for what you will actually hand over at the till.

Notice the cost does not scale as fast as the floor area: a 10x8 has four times the footprint of a 6x4 but costs under twice as much, because the fixed items (door, windows, roof covering) are spread over more shed. Bigger sheds are better value per square metre.

Where the Money Actually Goes

This is the part most cost guides skip, and it is the most useful. Here is the real breakdown for that standard 8x6, by category:

The Five Things That Move the Total Most

• Cladding choice. Overlap is the cheapest board and can shave 20 to 30 percent off the wall cost versus tongue-and-groove. On an 8x6 that is easily £80 to £120. Read the trade-offs in our cladding guide before you save here, cheap cladding weathers faster.
• Size. Every extra foot of width or depth adds framing, cladding, floor and roof. But as the table above showed, going bigger is more cost-efficient per square metre, so build the size you will actually need, not the smallest you can bear.
• Roof covering. Standard mineral felt is cheapest; EPDM rubber costs more up front but lasts 20+ years. On a small shed the difference is £30 to £60, and it is often worth paying.
• Timber grade and section. C24 costs a little more than C16 but is stiffer; heavier sections cost more per metre. Our timber sizes and grades guide explains what you actually need for each part, so you do not over-spec.
• Glazing and doors. Every window and every upgrade from a single to a double or stable door adds cost. A windowless store is meaningfully cheaper than a glazed workshop.

Build It or Buy It? The Honest Comparison

Here is the truth most build-your-own guides avoid: for small, standard sheds, buying ready-made is often cheaper than the raw materials to build the same thing. A mass-produced 8x6 from a shed retailer can start around £450, while the materials to build one yourself are around £1,500. The manufacturer buys timber by the lorry-load; you buy it by the length.

So why build? Three good reasons: you want a non-standard size, you want better timber and construction than a budget flat-pack, or the project itself is the point. Building wins clearly on large and bespoke sheds, and on quality. For a small standard store, buying usually wins on price alone.

Do not take our word for it, see it for your size: our Build vs Buy tool puts the DIY materials cost next to comparable ready-made sheds at live prices.

The Costs People Forget

• The base. A shed needs a level foundation. A plastic grid base runs £100 to £180, paving slabs or concrete more. Budget it in; a shed on bad ground rots.
• Delivery. Timber and sheets are bulky. One consolidated merchant order beats several small ones, and some merchants deliver free over a spend threshold.
• Tools. If you do not own a drill, saw and a decent level, factor them in, though they pay for themselves across a build.
• Treatment top-ups. Even treated timber benefits from a coat once built, and needs re-treating over its life. See our treatment guide.
• Guttering and a water butt. A £30 addition that protects the base and gives you free watering.

Seven Ways to Build for Less (Without Building Worse)

• Choose overlap cladding for a store; save shiplap for sheds you will look at daily.
• Design to standard timber lengths (2.4m, 3.0m, 3.6m, 4.8m) so you buy less and waste less. Our builder's cutting list shows the offcuts.
• Buy in one order to clear a free-delivery threshold and avoid repeat trips.
• Skip the fancy door unless you need it; a solid single door is cheapest and most secure.
• Reuse a sound base if you are replacing an old shed, rather than laying a new one.
• Buy treated timber in summer when merchants often run offers on stock.
• Do not under-spec the frame to save pennies, a shed that sags or rots is the most expensive shed of all.

Frequently Asked Questions