How to Choose the Best Summer House Base

A fundamental rule for summer houses is to have firm, level foundations where the bases are fixed. This guide covers everything you need to know about the various available options.

What Summer House Bases Are Available?

You have four main options: concrete, wooden deck, paving slab, and gravel. Each has its advantages, so consider factors like cost, durability, and appearance.

1. Concrete

Concrete base for a garden building

(Image Credit: Flickr)

A concrete base is made by pouring concrete into a frame and letting it set. This creates a flat, solid surface for your summer house to sit on. It’s durable and great for heavy structures.

Keep in mind that it might take more work and cost a bit more. The skill and effort required for tasks like pouring and levelling can be demanding. Not to mention that concrete mix and possibly hiring professionals can add to the expense. But like any hard work, all of this can be worth it for the stability and longevity it offers to your garden building.

2. Wooden deck

BillyOh Eze Base
BillyOh Eze Base

A wooden deck is made of sturdy timber planks laid out on a flat surface. You can either purchase an in-built model or DIY it to save on costs. To give you an idea of what most look like, check out our Eze base.

The wood gives it a natural look while allowing air to flow underneath. It’s best for smaller summer house units that require good drainage. Considering the material, it might not last as long as its concrete counterpart.

3. Paving slab

If you’re looking for a cost-effective and easy-to-install option, opt for a paving slab base.

Paving slabs are large, flat stones or concrete blocks placed side by side on the ground. They create a smooth and stable surface ideal for medium-sized to large summer houses.

These slabs also add a neat, tidy look and can be arranged in various patterns to match your style. If damaged or stained, they can be replaced for ease of maintenance.

4. Gravel

Gravel base

(Image Credit: Flickr)

A gravel base is constructed using layers of gravel — or those small, loose stones on the ground. It provides a stable and well-drained surface and is easy to install. Just spread the gravel out evenly and compact it a bit, and you’re basically done! You can always add more gravel or adjust it to fit your space just right.

Gravel bases are perfect for smaller garden rooms or temporary setups.

What Factors Should I Consider?

When choosing the best summer house base, consider factors like:

  • Ground stability
  • Drainage
  • Size
  • Budget
  • Maintenance

Ground stability

You want a base that feels solid underfoot without any wobbles or dips. That’s what ground stability is for. Look for areas with compact soil or stable ground that won’t shift or sink over time. Avoid places prone to flooding or erosion.


Just like you wouldn’t want to sit in a soggy seat, your summer house doesn’t want to be sitting in a puddle, either. The best base should allow water to flow away to prevent moisture buildup underneath. Gravel and wooden decks are excellent choices as they let water seep through.


You want your summer house base to fit just right, neither too big nor too small. One that’s too small might leave parts of the structure hanging off. Too large, and it can look awkward and waste space. Measure the unit’s dimensions and opt for a base that matches it perfectly.


You want to get the best value for your money without overspending. Consider the cost of materials and labour for different base options. While a concrete base might offer durability, a gravel base could save you more.


Think about how much time and effort you can invest in maintenance. We suggest choosing a base that fits your schedule. Concrete and paving slabs are low-maintenance options that only need occasional cleaning. Wooden decks and gravel bases might need more regular upkeep, e.g., staining or topping up gravel.

We hope this guide has been helpful in your quest to find the best summer house base. Once you’ve made your choice, you may proceed with the construction.

If you have any further questions, contact us and don’t hesitate to give us a call at 01909 768840. Next on your reading list: How to Clean Your Garden Summer House Ready for Summer

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