Patio Planning Tool

Patio Slab Laying Cost Calculator

Work out patio size, slab quantities, sub-base, bedding, labour and a realistic fitted cost range. It is a practical way to set a budget before ordering materials or asking for quotes.

Includes labour allowance
Live estimate as you type
Useful for porcelain, sandstone and concrete slabs

Calculate your patio budget

Enter your patio size and slab details below. Open the advanced options if you want a more realistic estimate that includes excavation, access, disposal and edging.

Use the slab price only here, not the full laid price.
This tool gives a planning estimate only. Final patio prices vary with ground conditions, drainage, access, shape, number of cuts, slab quality, disposal requirements and finishing detail.

Your estimate

Use this as a practical starting point. Once you know the slab choice, layout and site access, you can narrow the figure further.

Standard project

Estimated installed cost range

£1,740 – £2,360

This includes slab materials, groundwork, bedding, labour and a sensible allowance for standard site conditions.

Patio area 12.00 m²
Slab area each 0.36 m²
Estimated slabs needed 34 slabs
Slabs including waste allowance 38 slabs
MOT sub-base required 1.20 m³
Mortar bed volume 0.42 m³
Slab material budget £420
Groundwork and bedding allowance £300
Labour allowance £720 – £960
Optional extras £0 – £120

Project level

Standard specification with average site access and a common slab layout.

What can raise the price?

Premium slabs, extra cutting, tighter access, old patio removal, edging and higher-spec pointing can all increase the final installed cost.

Typical patio price guide

As a rough early planning guide, laid patio prices often sit within these broad ranges:

Budget concrete patio from around £80–£110 per m²
Standard porcelain or sandstone patio from around £110–£160 per m²
Premium finishes or more complex layouts from around £160+ per m²

What affects patio laying cost?

  • Excavation depth and spoil removal
  • Whether an old patio must be broken out first
  • Distance to the garden and ease of access
  • Number of cuts, corners and awkward edges
  • Slab type, thickness and handling weight
  • Edging, steps, falls, drainage and finish quality

How to use this calculator properly

Use it to compare slab sizes, understand likely quantities and set a realistic first budget for your project. It is especially useful before visiting suppliers or asking for quotes.

Once your slab choice, thickness, layout pattern and site conditions are known, you can then tighten up the estimate further.

Does this patio calculator include labour?

Yes. It includes a labour allowance based on project size, installation level and access. That makes it more useful than a simple materials-only slab calculator.

How many extra slabs should I allow for waste?

A waste allowance of around 10% is often sensible for standard layouts. Awkward shapes, diagonal patterns or lots of cuts may justify a higher allowance.

Why is the laid price much higher than the slab cost?

Because a finished patio usually includes excavation, MOT sub-base, mortar bedding, labour, cutting, alignment, pointing and often waste disposal as well. The slabs are only one part of the total job cost.

Can I use this for porcelain and sandstone slabs?

Yes. It works well as a general planning tool for common patio slab types including porcelain, sandstone and concrete paving slabs.

Does this include drainage, steps or major ground correction?

Not as a full engineered design. This is an early budget tool. If your project needs steps, retaining work, complex drainage or significant level changes, the real price may be higher.

Planning a patio project?

Use this estimate as your starting point, compare slab choices and check what different site conditions do to the final figure. If you are local and want help with patio groundwork, slab laying or related garden jobs, get in touch.