Every shed project starts with a question: should the building be framed and assembled in a factory, or built piece by piece on the property? The trade-offs between on-site and off-site construction techniques show up in cost, schedule, and site requirements. A factory-built shed arrives complete on a trailer, so the access route and the pad must be ready before delivery day. An on-site build spreads the work out but needs a clear work area, material storage, and a crew with tools. Either way, the condition of the property decides whether the process runs smoothly or turns into a rescue operation.
Consider a delivery that went wrong. A crew once arrived at a manicured property with a long driveway, only to find the installation path crossed a tidy pet cemetery with stone markers. The salesperson had marked the property as checked after a quick drive-by; nobody had walked the route on foot. The building was eventually set, but only after hours of re-routing around the markers and apologies to an elderly customer promised a simple install. Stories like this trace back to the same gap: the site was never actually assessed.
Why the Site Check Decides Whether Your Shed Ever Arrives
A site check is a physical inspection of the property before delivery is scheduled. It answers one question: can this building get to this spot, on this day, with this equipment? The answer shapes the quote, the truck, the crew size, and the booking time. Skip the check and you are gambling the delivery fee, the building, and the customer relationship on a guess.
The cost of a failed delivery is easy to underestimate. Fuel, crew time, and a second trip typically run a few hundred dollars, and a damaged building can lose thousands in repairs. Dealers who track redeliveries find that site conditions, not mechanical failures, cause most missed installs. A soft driveway, a low limb, or a locked gate stops a truck faster than any breakdown.
What a proper site check answers
- Can the truck and trailer reach the pad without excessive backing?
- Is there at least 14 feet of vertical clearance for wires, branches, and roof overhangs?
- Will the ground support the weight of the truck, trailer, and building?
- Is the pad area level, drained, and free of buried utilities?
The inspection does not have to take long, and it should not be done from the driver’s seat. Walk the route, take photos, and write down measurements. On delivery day, treat the property like a small construction site. Best practices for site establishment and temporary works cover the basics: mark the pad area, protect the lawn with plywood, stage the cribbing and leveling blocks before the truck arrives, and decide where the crew parks and where the building is lifted.
Access: Width, Turns, and Overhead Clearance
Access is the first thing to verify, because it is the least negotiable. A standard shed trailer is about 8.5 feet wide, and the truck pulling it needs room to swing through gates, around corners, and under anything overhead. The table below lists the numbers to check before you book the delivery.
| Access feature | Typical requirement | What happens if you skip it |
|---|---|---|
| Gate or driveway width | 10 feet minimum, 12 feet comfortable | The trailer cannot enter and the crew must hand-carry the building or refuse the job |
| Overhead clearance | 14 feet for wires, limbs, gutters, and porch roofs | A snagged roof tears siding and damages utilities |
| Turning radius | 40 to 50 feet of swept path | The driver backs up for blocks or the delivery is cancelled |
| Approach slope | 10 percent (about 6 degrees) maximum | The trailer drags and the building slides on the deck |
| Surface condition | Firm, dry, compacted soil or paved drive | Soft ground swallows the trailer and leaves the crew stuck |
Measuring the route in five steps
- Measure every gate and driveway opening at its narrowest point, including post gaps.
- Walk the route looking up for power lines, cable drops, branches, and roof overhangs.
- Check slopes with a level and straight board at the driveway, the yard, and the pad.
- Probe the ground with a steel rod to confirm it is firm, especially after rain.
- Photograph the route and pad, then share the photos with the driver and installer.
Overhead clearance on utility lines
The service drop from the utility pole to the house is often lower than the main line, and it crosses backyards at surprising angles. Measure it on a dry day; sag increases in heat. If any wire is within reach of the roof, call the utility company before delivery and ask for a temporary raise or a plan to work around the drop. Never push a building under a live line.
On larger projects the work splits between two roles: the site engineer verifies the technical details, and the site supervisor runs the crew on the day. The division of duties between a civil site engineer and a site supervisor matters even for small deliveries, because someone has to own the assessment and someone has to own the install. On a shed delivery, the driver usually plays both roles.
Ground Conditions and the Pad Under the Building
The pad is where the building will sit for decades, so the soil under it matters more than the grass on top. Wet, soft, or uneven ground moves under the skids or slab, and the building settles, racks, or rots at the base. Check soil, drainage, and slope before anything is delivered.
Clay soils swell when wet and shrink when dry, moving a pad by inches over a season. Sandy soils drain well but shift under point loads. The practical answer for most sheds is a compacted crushed stone pad that spreads the load and keeps the skids out of standing water. For workshops and heavy equipment, a concrete slab is the standard choice. The comparison below uses typical U.S. figures for a 10 by 12 foot building.
| Foundation option | Typical cost | Time to complete | Best for |
|---|---|---|---|
| Crushed stone pad | $300 to $600 | 1 to 2 days | Portable sheds on skids |
| Concrete slab | $600 to $1,200 | 3 to 5 days with curing | Workshops, heavy loads, permanent buildings |
| Deck blocks or piers | $400 to $800 | 1 day | Small sheds on uneven ground |
Where the pad sits is a layout decision as much as a construction one. Site layout planning means zoning the yard: keep the building away from septic fields, wells, buried utilities, and property lines, and check local setback rules first. Mark all underground lines before any digging; one call to the 811 service locates every buried utility for free.
Drainage decisions that keep the floor dry
- Set the pad on the highest practical point so water drains away.
- Slope the surface about 2 percent, roughly a quarter inch per foot.
- Add gutters and downspouts if the roof sheds water onto the pad.
- Keep soil and mulch at least 6 inches below the floor framing to avoid rot.
Frost heave and seasonal movement
In cold climates, soil moisture freezes and expands, lifting whatever sits on top. A gravel pad moves as a unit and settles back in spring, which is why portable sheds tolerate it. A concrete slab needs footings below the frost line, usually 12 to 48 inches deep, or it cracks when the ground heaves. Check local frost depth before pouring.
Preparing the Building and Anchoring It to the Site
A shed is only as strong as its framing. The bearing walls transfer roof and floor loads down to the skids or slab, and a building framed correctly survives the ride without racking or twisting. Before delivery, check the floor system, the wall bracing, and the skids, because these carry the whole structure during lifting and setting.
Anchoring keeps the building where the crew sets it. Wind lifts the roof and pushes the walls, and an unanchored shed can shift, tip, or roll in a strong storm. The right system depends on the foundation and the local wind zone.
Anchoring a shed on a gravel pad in six steps
- Level the pad and set the skids on pressure-treated runners or cribbing.
- Check level in both directions and shim until the building reads true.
- Drive earth auger anchors at each corner, angled away from the building.
- Attach galvanized straps from the anchors to the floor framing.
- Tighten each strap in turn so the building stays square.
- Recheck level, trim excess strap, and cover sharp edges.
On a concrete slab, expansion bolts do the same job. Many municipalities treat sheds as accessory structures and require permits over 120 square feet or 8 feet tall, and some demand an engineered anchor plan in high-wind areas. A permit is cheaper than the inspection failure that follows an unpermitted install.
Safety Rules, Utilities, and a Checklist You Can Reuse
Delivery day is the riskiest part of the project. A truck, a trailer, a heavy building, and an unfamiliar yard make a crowded work zone, so the crew needs the same discipline as any job site. The essential construction site rules apply in miniature: keep spectators back, use spotters on both sides, never stand under a suspended load, and stop when the weather turns. Ask the customer to keep children and pets inside during the set.
Utilities deserve their own pass. Confirm buried lines on the pad and route, and mark overhead wires with flags or cones. If the building will have electricity, run the conduit and ground wire before it arrives, and leave the final connection to a licensed electrician.
A reusable site check checklist
- Gate and driveway widths measured at the narrowest points.
- Overhead clearance confirmed at 14 feet on the whole route.
- Slopes checked; approach under 10 percent.
- Ground firm and dry; wet sites rescheduled.
- Pad staked, leveled, and marked.
- Buried utilities located and flagged.
- Setbacks and permits confirmed with the building office.
- Anchors and leveling materials staged before arrival.
- Customer briefed on parking and clear areas.
Run through the list once when the delivery is booked and again the morning of the install. Ten minutes of checking beats a day of rescuing.
The final decision most buyers face is whether a factory-built shed or a stick-built structure fits their property, and the site check feeds directly into that call. Builders who move beyond first cost and compare on-site and off-site construction methods include site prep, access, and foundation work in the total. A cheap building that needs an expensive slab, a crane, and a weekend of grading is not cheap. A pricier building that drops onto a level stone pad in an hour can be the better deal. Measure the site first, and the right choice becomes obvious.