Shed Installation Cost Calculator

Shed installation typically costs $1,500 to $6,000, or roughly $15 to $55+ per square foot, depending on the size, material, and complexity. By type: a resin or metal prefab kit runs about $500 to $3,000, a delivered prefab wood shed $2,000 to $6,000, a custom site-built wood shed $3,000 to $10,000+, and a lofted barn or garage-style shed $4,000 to $12,000+. The main drivers are the footprint (a small shed is ~80 sq ft, medium ~120, large ~200), the material/type (kit cheapest, prefab wood mid, custom more, lofted barn most), the roof style (lean-to cheapest, gable standard, gambrel/hip more), the finish level (a basic shell vs. a windowed/lofted or fully finished interior), and the foundation (skids/blocks cheapest, a gravel pad mid, a concrete slab significantly more). A ~$600 job minimum applies. Add-ons like electrical, delivery/setup, site leveling, shelving, a ramp, and a permit add on top. Enter your size, material, and foundation above for a localized estimate.

They differ in cost, quality, and how they're installed. A prefab kit (resin/plastic, metal, or wood) is the cheapest, DIY-friendly option — you or an installer assemble pre-cut or molded panels on-site in a few hours to a day; resin and metal kits are budget-friendly but the least sturdy. A delivered prefab shed is a fully-built wood shed constructed at a factory and placed on your prepared base by truck — ready to use on delivery, decent quality, but limited to standard sizes and designs. A custom site-built shed is constructed on-site to your exact size, design, and finish, so it can match your home, add windows, a loft, or a workshop setup; it's the sturdiest and most finished but the most expensive and takes days to build. Choose a kit for budget and speed, a delivered prefab for a quick standard shed, and custom when you want a specific design, higher quality, or a finished workshop/office. This calculator prices resin/metal kits, prefab wood, custom site-built, and lofted-barn options.

A shed needs a level, stable base, and the right choice depends on the shed's size, the ground, your climate, and budget. On-grade skids or concrete blocks are the simplest and cheapest — the shed sits on runners or blocks on a leveled spot, fine for small kits on stable ground but prone to shifting on soft or uneven soil. A gravel pad (compacted crushed stone in a leveled, bordered area) is the recommended base for most sheds: it levels the ground and, crucially, drains water away to keep the shed dry and prevent wood rot — well worth the ~$2/sq ft. A concrete slab is the most solid, permanent, and level base (~$6/sq ft), ideal for large or heavy sheds, lofted barns, and workshops where you want a clean, dry floor, but it's the most expensive and may require a permit. Match the base to the shed: on-grade for small kits, a gravel pad for most sheds, and a slab for big, heavy, or permanent structures. A proper base keeps doors aligned, prevents settling, and extends the shed's life.

It depends on the size and your local rules. Many jurisdictions exempt small sheds — often those under 100, 120, or 200 square feet (the threshold varies) — from a building permit, so a compact storage shed frequently needs no permit. Larger or permanent sheds, and any shed with electrical or plumbing, typically do require a building permit and inspections for code compliance. Importantly, zoning and setback rules (how far the shed must sit from property lines, the house, and easements) usually apply regardless of size, and if you're in an HOA you'll likely need its approval too, with rules on size, placement, appearance, and materials. Building without a required permit or violating setbacks/HOA rules can lead to fines, being forced to move or remove the shed, and problems when selling. Before you buy or build, check your local building department's size threshold, the zoning setbacks, and any HOA requirements — and call to locate underground utilities before digging a foundation. This calculator includes a permit add-on.

Yes, both meaningfully affect cost. On roof style: a lean-to or slant roof is the simplest and cheapest (about −5%), a gable/A-frame is the standard baseline, and a gambrel/barn roof (about +15%) or a hip roof (about +20%) use more material and often add headroom or loft space, raising the price. On finish level: a basic shell — just the structure for storage — is the baseline; adding windows, a loft, or extras is about +15%; and a fully insulated and finished interior (drywall, wiring-ready, comfortable enough for a workshop, office, or she-shed) is about +30%. The finish is where a simple storage box becomes usable year-round space, so it's the biggest lever if you're building an office or workshop rather than a tool shed. Match both to the shed's purpose: a plain gable shell for storage, or a barn roof with a finished, insulated interior for a hobby or work space.

A shed is far more versatile than a tool locker. The classic use is storage — lawn and garden equipment, bikes, sports gear, seasonal items, and household overflow that frees up the garage. But sheds are increasingly used as workshops (with a workbench, power, and lighting), backyard home offices or studios (the 'office shed' trend — quiet, separate, often finished and insulated), she-sheds and man-caves (a personal retreat), garden/potting sheds (with windows and shelving), hobby spaces (art, music, crafts), home gyms, pool houses, and more. The intended use should drive the shed's size, finish, and features: a basic shell on a gravel pad is plenty for storage, while a workshop, office, or she-shed wants a finished, insulated interior, electrical and lighting, windows, and a sturdier custom or wood shed for comfort and durability. This calculator's finish levels and add-ons (electrical, shelving/loft) let you spec the shed for how you'll actually use it.

It depends on the type and foundation. A resin or metal kit assembles in a few hours to a day on a prepared base. A delivered prefab shed is placed and set up in a few hours — the build already happened at the factory, so it's ready to use on delivery. A custom site-built shed takes longer, typically 2 to 5+ days, since it's small-scale construction of the floor, walls, roof, doors, windows, and any finishing. The foundation adds time before the shed goes up: a gravel pad takes a few hours to a day to excavate, level, and compact, while a new concrete slab adds 1 to 2+ days for forming, pouring, and — the key delay — curing before the shed can be placed or built on it. Other factors include the shed size, the finish level (a finished interior adds days), site prep, delivery access, added electrical, and weather. In short, a kit or prefab on a ready base is a same-day job; a custom shed or a new slab stretches it to several days.

For a standard small-to-medium storage shed, a prefab kit is almost always cheaper up front — a resin or metal kit ($500–$3,000) or a delivered prefab wood shed ($2,000–$6,000) costs less than a custom site-built shed ($3,000–$10,000+), because factory production and standard designs cut labor and material waste. Building or buying custom pays off when you need a specific size or design, want it to match your home, need higher quality and durability, or are finishing it as a workshop or office rather than plain storage. There's also a middle path: a DIY kit is the lowest cost if you assemble it yourself, while a delivered prefab trades a bit more money for near-zero effort. Weigh the upfront savings of a kit against the sturdiness, customization, and resale/curb-appeal value of a custom shed — and factor in the foundation and any add-ons, which apply either way. This calculator lets you compare kit, prefab, custom, and lofted-barn pricing side by side.