How to Prepare Your Site for an On-Site Shed Build
Because we build your shed right on your property, a little preparation before build day keeps everything fast, clean, and on schedule. Good site prep also helps your building sit level and last for decades in North Idaho weather. Here is exactly how to get your site ready — and what we can take care of for you.
The quick version
- Pick a level, well-draining spot that meets your setbacks.
- Clear the building footprint plus a few feet of working room around it.
- Get the ground reasonably level, with water draining away from the pad.
- Decide on your base and foundation (we can help).
- Keep a clear path so our crew and materials can reach the build location.
1. Choose the right spot
Start by picking where the shed will live. We don't need full driving access, but make sure the crew has an open path to the site
2. Clear and prep building area
Regardless of which foundation option you choose, a clear and semi flat area is needed. Make sure that all debris, sprinklers, etc are cleared from shed area with a few additional feet on each side.
3. Choose your foundation type
We offer several foundation types:
Shed floors:
This is the entry level and cheapest shed foundation option. It keeps the building portable and off the ground, and can be upgraded to handle heavy vehicles. There are two site prep options for shed floors:
a. For shed floors up to 10' wide: we offer a complimentary leveling with concrete blocks over dirt or whatever is existing to simplify site prep. This is a decent option, but not as nice as a solid gravel pad.
b. For shed floors over 10' wide, and anytime a higher end option is desired, a gravel pad is the logical choice. Gravel should be spread level (ideally within an inch or so), and 4" or so deep. Compaction is nice but not necessary for a shed. NIOS does not install gravel pads, but we can provide landscaper contacts who routinely install these.
In addition, we can always build a shed floor over asphalt uneven concrete, or any other solid base.
Concrete slab foundation:
This is the high end option for workshops, garages, and storage sheds alike. Maximizes added value to property, and creates the ideal floor for parking heavy vehicles and high traffic
If we pour the slab for your shed, make sure that site is clear and has good access for concrete truck to avoid additional charges for pump. Additionally, make sure that sod/organics are stripped and small pile of gravel is available for final grade and compaction prior to pour. NIOS offers full service slab prep but cost depends on site and may be additional to quoted prices.
If you want to pour your own slab:
Contact us to confirm appropriate specs so slab will work well for your specific shed.
Crawlspace foundation:
This is the ideal option for fully insulated and finished sheds. A properly done ADU or permanent tiny home should have a crawlspace foundation. We pour to the same standards used in residential construction, so you can count on a quality foundation.
We usually bring heavy equipment to dig out a crawlspace foundation, so as long as we have access for machinery we can usually handle all of the prep. This depends a lot on the site and specifics, so contact us to confirm.
Built for North Idaho
Our area brings real snow load, frost, and freeze-thaw cycles, so drainage and a solid base matter more here than in milder climates. We plan framing and foundations around those conditions, and we are happy to point you to the right base and foundation for your specific lot. Not sure what your site needs? Send us a few photos with your estimate and we will help you sort it out.
A level, well-drained base is the foundation of a shed that stays square and dry for decades.
Site preparation FAQ
How level does my site need to be?
Aim for as flat as you reasonably can. A few inches of fall across the footprint is usually workable, but once the difference between corners gets larger, the ground should be leveled before build day so the shed sits square and the doors work correctly.
What kind of base do you recommend?
For most sheds, a compacted 3/4-inch crushed gravel pad extended about a foot past the building on every side. It drains well, resists frost heave, and gives the building a firm, level surface to sit on.
Do you offer concrete slabs and crawlspace foundations?
Yes. Along with the standard Shed Floor — a raised wood floor on pressure-treated skids that sits on your gravel pad — we build poured concrete slabs and crawlspace (footing and stem wall) foundations. You can see all of the options and live pricing in the 3D shed builder.
Can you build on a sloped or tricky lot?
Often, yes — building on site is a real advantage on slopes and tight properties. Leveling or a footing/crawlspace foundation may be needed, so send us photos of the site with your estimate and we will tell you what it will take.
Do I have to prepare the site myself?
Most customers handle basic clearing and a gravel pad themselves, and we are glad to share resources to help. For grading, concrete, or complex sites, we can help you plan the work or point you to the right contractor.
What do you need from me before build day?
A chosen, cleared location with a prepared base, a clear path for the crew and materials, and your corners marked if you have a precise placement in mind. You do not need to be on site all day, but please stay reachable by phone in case we have a question.
Design your shed and we'll handle build day.
Configure your shed in 3D, choose your foundation, and send it over for a free on-site estimate.