Are you looking to understand concrete base costs for your shed? You’re in the right place, because we’ll break down everything you need to know in our helpful blog post.

Building a shed is a great way to add storage space and value to your property, but…  Often enough, the foundation is overlooked in the planning process. Everyone knows that a good foundation is essential for a strong and long-lasting house and the exact same is true for smaller structures like sheds. 

You should always take your time with the base of the shed and make sure you’re getting the best foundation for your circumstances. Concrete bases are an excellent choice thanks to their longevity, stability, and protection against moisture damage. We’ll cover everything you need to know about the cost of a concrete base for shed installation. We’ll also cover some concrete base alternatives if you’re looking for a more cost-effective solution.

Why choose a concrete base for your shed?

Before diving into costs, let’s take a moment to understand why a concrete foundation is so often the best choice as a shed base.

Durability

Concrete bases are an excellent choice because they provide superior durability, pest resistance, and moisture protection. A well-made concrete base can last decades with minimal maintenance, making it a worthwhile investment for most shed owners.

They are also the perfect solution if you’re planning on storing heavy items or workshop equipment. The concrete base will also serve as a perfect floor to anchor any machinery, that needs additional support.

No shifting and cracking

A concrete base has a level surface that prevents your shed from shifting over time. Shifting could lead to structural problems and issues with door and window alignment.

Concrete foundation cons

Now that you know about the pros, let’s also consider some of the cons of concrete foundations, so you can make an informed choice.

Drainage

One challenge that comes up with concrete foundations is poor drainage. If you opt for a concrete base, make sure that you are also considering drainage

High cost

Among different garden building base types, concrete foundations always stand out as the most expensive option. In most cases, this is justified, because a well-built concrete base will last you over 50 years. This means that you often end up spending less in the long term in both time and money, thanks to the incredible durability of the foundation.

Permanence

While this is a great benefit, it can turn into a con in some cases. If you ever want to or need to move the shed, the concrete foundation must be broken down and can’t be reused. You’ll most likely need specialist equipment and tools to break down the foundation. This would also mean that you end up spending more money than needed, as you won’t benefit from the longevity of the foundation.

Average cost of concrete base for shed

The cost of laying a concrete base for a shed varies significantly depending on several factors, but here’s what you can typically expect:

Small sheds (6×4 to 8×6 feet):

• DIY materials only: £150-£300
• Professional installation: £400-£700

Medium sheds (8×8 to 10×12 feet):

• DIY materials only: £300-£600
• Professional installation: £700-£1,200

Large sheds (12×8 feet and above):

• DIY materials only: £600-£1,200
• Professional installation: £1,200-£2,500

These figures represent typical UK pricing and can vary based on your location, ground conditions, and specific requirements.

Factors affecting concrete shed base cost

Size and thickness requirements

The most obvious factor that affects cost is the size of the foundation. Larger projects require more concrete, reinforcement and labor time. Also consider the thickness of your concrete base – a standard 4-inch (about 100mm) base is sufficient for most garden sheds, heavy-duty workshops may need a 6-inch (About 150mm) thickness. Pricing for concrete pouring is calculated by cubic meter (m³), so you’ll need to know the width, length and depth to get a quotation.

Site preparation and access

Ground conditions can have a large impact on the total cost of a project. If you need extensive excavation, drainage solutions, or the area is difficult to access for delivery trucks, be prepared to pay more. Rocky or clay-heavy soils may require additional preparation, while soft or waterlogged ground might need specialised foundation work.

Regional variations

Urban areas typically have higher labor costs and rural areas may instead have higher delivery and material charges. The cost of a concrete base for shed UK installations varies between regions, with London and the South East generally commanding premium prices.

Professional vs. DIY installation

Labour costs will affect the final price of the foundation significantly. Depending

Choosing between professional installation and DIY significantly affects your total investment. While hiring professionals ensures proper installation and often comes with warranties, capable DIY enthusiasts can save 50-70% on labor costs by handling the project themselves.

Cost breakdown: materials and labor

Here’s a breakdown of the material and labor costs. Keep in mind that this will vary place to place. For labor costs it’s always a good idea to get at least three quotes to find a suitable one for you.

Material costs

Concrete: Ready-mix concrete typically costs £100 – £160 per m³. The price also depends on your location and delivery requirements. A standard 8×6 foot shed base requires approximately 1.2 cubic meters of concrete. Mixing your own concrete is typically more cost-effective for smaller projects. However, mixing concrete requires some skill and mistakes can be costly to correct. 

Reinforcement: Steel mesh or rebar adds £40-£80 to material costs but significantly improves the base’s strength and longevity.

Formwork: Temporary wooden forms for containing the concrete cost £30-£60 in materials for most shed bases.

Sub-base materials: Hardcore or crushed stone for the foundation layer costs £25-£50 per ton, with most shed bases requiring 1-2 tons.

Labor costs

Professional installation typically costs £220-£430 per day for a two-person team. Most shed bases can be completed in 1-2 days, depending on complexity and curing requirements. Specialized tasks like drainage installation or dealing with challenging ground conditions may extend the timeline and increase costs.

Regional Cost Variations

England

The cost of concrete base for shed installations across England varies considerably. London and surrounding areas typically see the highest prices, with professional installations ranging from £600-£1,000 for medium-sized sheds. Northern England generally offers more competitive pricing, with similar projects costing £450-£750.

Scotland and Wales

Scottish and Welsh markets often offer competitive pricing compared to southern England, though remote locations may face higher delivery charges for materials.

Ireland

For those searching for concrete base for shed cost Ireland information, expect pricing similar to the UK mainland, with some regional variations based on local market conditions and material availability.

Additional considerations

Planning permission

Most sheds under 30 m² fall under permitted development rules and don’t require planning permission. However, larger structures or those located close to a boundary

Drainage and services

Factor in costs for drainage solutions if your site is prone to waterlogging. Similarly, if you plan to install electricity or plumbing to your shed, coordinate these services with your base installation to minimise disruption and costs.

Long-term value

While concrete bases require higher initial investment compared to alternatives like timber frames or gravel pads, they offer superior longevity and lower maintenance costs over time.

Tips for reducing costs

Since concrete foundations are costly, you may be wondering how to reduce the overall cost for your project. There are a few ways you can try to bring down the price.

DIY prep work

Even if you hire professionals for the concrete work, handling site preparation yourself can be an easy way to reduce labor costs. For example, you can clear vegetation, mark utilities, and take care of basic excavation.

Sourcing materials

Don’t forget to shop around for materials, especially if you’re handling the project yourself. Local quarries often offer competitive prices on aggregates, while concrete suppliers may provide discounts for off-peak delivery times.

Build off-season

If possible, you can plan your project during quieter periods. Many contractors offer reduced rates during the autumn and winter months when demand is lower.

Alternatives to a concrete shed foundation

If a concrete shed foundation isn’t what you’re looking for, there are a few other options to consider.

Foundation kit

For many sheds, a foundation kit may be a suitable and cost-effective solution. You can cut costs by up to 80% when you opt for an adjustable foundation kit instead of a concrete foundation. 

Gravel foundation

Gravel foundations are one of the easiest types of foundations to use if you’re looking for a simple DIY base. They have excellent drainage and it is also one of the cheapest options if you’re price-conscious.

Plastic grid

Plastic grid bases are easy to install but have some cons to consider. They are generally not well-suited for sloped areas and may not be frost-proof in some areas. You’d also need to buy gravel in addition to the grid. Plastic may also rot and is significantly less durable compared to other materials.

Conclusion

While a concrete base is generally speaking a costly investment, it is, in most cases, well worth it. The final price will vary based on factors like the size of the foundation, its location and complexity. Budgeting around £500-£1,200 for professional installation is a realistic starting point.

A high-quality concrete foundation provides excellent service for decades, making it a great investment. For the most accurate pricing for your project, make sure you get detailed quotes from local tradesmen who can assess your site and requirements firsthand.