How Much Do Concrete Blocks Cost? Price Guide for Buyers and Contractors

15th July 2026

If you're pricing up a block order, you'll have noticed the numbers don't sit still. Concrete block prices vary by merchant, block type, and quantity, making it hard to pin down a figure you can plan a budget around. Whether you're a self-builder working out material costs for the first time, or a site manager needing a reliable number for a client quote, the goal is the same: understanding what drives the price, so you're not caught out later.

This guide walks through what affects block pricing, how per-unit and per-pallet costs compare, and what to check before you commit to an order.

What Determines Concrete Block Prices

Concrete block prices are shaped by a handful of core factors, and understanding them makes it easier to judge whether a quote is fair. Block type is the biggest driver: dense, hollow, medium-density, and thermal blocks all fall into different price bands, so the same wall built with different types can have a different material cost.

Thickness matters too, since a 100mm block uses less material than a 215mm block. Strength rating also plays a part, with higher-strength blocks for load-bearing or below-ground work costing more than standard general-purpose blocks. Quantity and delivery costs further affect the final number: larger orders usually bring the unit price down, while small or urgent orders often cost more per block.

If you're working with an interlocking concrete block supplier, ask up front how their pricing breaks down by these factors, since not every supplier prices these variables the same way.

Concrete Block Cost Per Unit vs Per Square Metre

Suppliers quote block prices in two main ways: per unit and per square metre, and it helps to understand both before comparing quotes. A standard 100mm dense block typically costs around £2.40 to £3.00 each, working out at roughly £21.50 to £25.00 per square metre [1]. A 215mm hollow dense block typically costs £4.00 to £5.50 per block, or around £52.00 to £60.00 per square metre, reflecting the extra material involved [2].

Concrete block cost per unit is the quicker figure to compare across suppliers, but concrete block prices per square metre are usually more useful for budgeting a whole job, since they account for coverage rather than individual units. Some suppliers also quote a concrete block pallet price, which can work out cheaper per block than buying loose. Whichever way a quote is presented, ask for both figures so you can compare them.

Interlocking Concrete Blocks: Price Differences to Know

Interlocking concrete blocks are priced differently from standard blocks, mainly because of the extra precision needed to manufacture a consistent locking profile. These blocks tend to be priced higher per unit than standard dense or hollow blocks. That said, the labour savings can offset some of the higher material costs, since interlocking systems are often faster to build and don't require as much skilled bricklaying time.

If you're comparing interlocking concrete blocks against standard blockwork for a retaining wall or boundary structure, cost the full job rather than just the block price, since the labour difference can be significant. Ask a supplier for a breakdown of material versus expected build time so you're comparing like for like.

Ready-Mix vs Precast Block Costs

For some projects, the real question isn't which block to buy but whether blocks are the right material at all. A ready-mix block cost comparison with poured ready-mix concrete often comes down to the job's scale and shape. Ready-mix suits large, continuous pours where speed and structural consistency matter, while precast concrete block pricing tends to work out more cost-effective for smaller sections, repairs, or projects with awkward access where a pump or mixer lorry isn't practical.

Precast blocks also give more control over timing, since they can be stored and used as needed rather than requiring a scheduled pour. On a materials-only basis, blocks are often cheaper for smaller jobs, but once labour and site access are factored in, the gap can narrow considerably.

How Many Concrete Blocks Do I Need?

Working out quantities before you order helps avoid under-ordering, which delays the job, or over-ordering, which wastes money. As a rule of thumb, with a 10mm mortar joint, you'll need roughly 10 blocks per square metre for a single-skin wall, or around 20 per square metre for a double-skin wall. A straightforward 10 square metre single-skin wall needs about 100 blocks, while the same area as a double-skin wall needs closer to 200.

A few points worth keeping in mind:

Add a 10%-20% contingency for cuts, breakages, and general wastage.
Measure openings such as doorways or windows separately and subtract that area before applying the blocks-per-square-metre figure.
Check the interlocking concrete block price per unit separately if you're using an interlocking system, since coverage rates can differ slightly.
Round up to the nearest full pack or pallet where possible, since part-pallet orders are often priced less favourably.

What Affects Delivery Costs and Lead Times

Once the block price is settled, delivery is usually the next variable that shifts your final budget. Concrete block delivery costs depend on the distance from the supplier's yard, order size, and the accessibility of your site for a delivery vehicle. Sites with restricted access or narrow lanes may incur an additional charge, since the supplier might need a smaller vehicle or extra handling time.

Lead times vary too: standard block types are often available for next-day or short-notice delivery, while less common blocks or bespoke specifications can take longer to source. If your project has a fixed start date, confirm lead times well in advance rather than assuming stock will be there when you need it. Local suppliers generally offer shorter lead times and lower delivery costs than merchants further afield, worth factoring in even if their per-block price is slightly higher.

What to Confirm Before You Order in Bulk

Placing a bulk concrete block order can significantly reduce the unit cost, but it's worth confirming a few details first, particularly for a commercial job or a large self-build. The procurement route makes a real difference, as buying through a trade account or by the pallet from a builders' merchant usually works out cheaper per block than buying loose from a retail supplier, so ask whether trade pricing applies.

Before placing a large order, check:

The exact price of the concrete block pallet, including whether it's quoted with or without VAT.
Whether the price includes delivery, or whether that's charged separately based on distance and access.
The supplier's policy on part-pallet orders and any applicable surcharges.
Lead time for your specific block type and quantity, especially if working to a fixed programme.
Whether interlocking concrete blocks, if relevant, come with any installation guidance, since some systems have specific build requirements.

Get a Block Price That Actually Holds Up

Concrete block prices can vary a fair amount between suppliers, but a proper quote should hold up once you get into the detail: material, delivery, and lead time all accounted for.

If you'd rather skip the guesswork, give the 2 Brothers Concrete & Pumping team a call on 01489 552737 or drop us a message through our contact form, and we'll talk through what your project needs and what it's likely to cost. We'll give you a straight answer, not a rough online estimate.

External Sources

[1] [2] Checkatrade, “A standard 100mm dense block typically costs around £2.40 to £3.00 each, working out at roughly £21.50 to £25.00 per square metre” and “A 215mm hollow dense block tends to run £4.00 to £5.50 per block, or around £52.00 to £60.00 per square metre, reflecting the extra material involved”: https://www.checkatrade.com/blog/cost-guides/concrete-block-calculator/