Concrete building blocks
Concrete building blocks for sale on Ireland's largest auction and classifieds sites
Concrete block 100mm 7 - block, - £89.99
High strength 100mm • Dense concrete blocks • Load bearing durable - Free postage - New and Used
High strength 100mm • Dense concrete blocks • Load bearing durable - Free postage - New and Used
Block paving imprinted - block, - £125.00
Block paving sealer • Made from resin • This product fade - Free postage - New and Used
Block paving sealer • Made from resin • This product fade - Free postage - New and Used
Celcon plus 2n concrete - h+h, - £516.70
Grab yourself bargain • Left over from • Rear extension rrp - Free postage - New and Used
Grab yourself bargain • Left over from • Rear extension rrp - Free postage - New and Used
20x 100mm dense - 20x, - £95.90
Cavity walls general • Masonry work suitable • Product type dense - Free postage - New and Used
Cavity walls general • Masonry work suitable • Product type dense - Free postage - New and Used
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140mm concrete blocks - 140mm, 7n - £167.62
They are ideal • Finishing render cladding • Plaster drylining these - Free postage - New and Used
They are ideal • Finishing render cladding • Plaster drylining these - Free postage - New and Used
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48 listings · from £1.17 · avg £824.41
Browse 48 concrete building blocks listings currently in our index. Prices range from £1.17 to £35086.7, with an average of £824.41. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about concrete building blocks →
Concrete block 100mm 7 - concrete, - £101.16
High strength 100mm • Dense concrete blocks • Load bearing durable - Free postage - New and Used
High strength 100mm • Dense concrete blocks • Load bearing durable - Free postage - New and Used
Concrete block cavity - concrete, - £101.00
Timber sheet materials • Dense solid concrete • Cavity wall constructions - Free postage - New and Used
Timber sheet materials • Dense solid concrete • Cavity wall constructions - Free postage - New and Used
Dolls house breeze blocks - dolls, - £43.99
Dolls house • Mouldings trims timber • Houses buildings - Free postage - New and Used
Dolls house • Mouldings trims timber • Houses buildings - Free postage - New and Used
Solid dry core drill bits - core, - £45.48
Drill bits ideal • Drilling masonry products • Hardware door locks - Free postage - New and Used
Drill bits ideal • Drilling masonry products • Hardware door locks - Free postage - New and Used
100mm dense concrete block - dense, - £11.60
Masonry applications built • Durable concrete composition • Acompressive strength 7.3n - Free postage - New and Used
Masonry applications built • Durable concrete composition • Acompressive strength 7.3n - Free postage - New and Used
Concrete blocks two - blocks, sheet - £3.31
Concrete blocks two • Sheet pack gauge • Wills ssmp230 per - Free postage - New and Used
Concrete blocks two • Sheet pack gauge • Wills ssmp230 per - Free postage - New and Used
Best block paving - best, - £117.50
Depending surface you • Can apply concrete • Sealer pro brush - Free postage - New and Used
Depending surface you • Can apply concrete • Sealer pro brush - Free postage - New and Used
Dolls house concrete deck - dolls, - £7.50
Dolls house • Bakery confectionery mouldings • Trims timber - Free postage - New and Used
Dolls house • Bakery confectionery mouldings • Trims timber - Free postage - New and Used
Pattern imprinted concrete - pattern, - £64.99
Greater acrylic content • Ensures your concrete • Maintains robust wet - Free postage - New and Used
Greater acrylic content • Ensures your concrete • Maintains robust wet - Free postage - New and Used
Thermilate pro tarmac - thermilate, - £69.95
Thermilate insopaint • Masonry paint • Interior emulsion - Free postage - New and Used
Thermilate insopaint • Masonry paint • Interior emulsion - Free postage - New and Used
Pack 100mm dense concrete - 100mm, - £410.00
External construction work • Including structural walls • Beam block flooring - Free postage - New and Used
External construction work • Including structural walls • Beam block flooring - Free postage - New and Used
Block paving imprinted - paving, - £97.50
Depending surface you • Can apply concrete • Sealer pro brush - Free postage - New and Used
Depending surface you • Can apply concrete • Sealer pro brush - Free postage - New and Used
Block paving imprinted - &, - £32.50
Depending surface you • Can apply concrete • Sealer pro brush - Free postage - New and Used
Depending surface you • Can apply concrete • Sealer pro brush - Free postage - New and Used
Wrekin concrete decking blocks - concrete, - £14.60
Engineered decking block • Simple but highly • Effective stable solution - Free postage - New and Used
Engineered decking block • Simple but highly • Effective stable solution - Free postage - New and Used
10pcs concrete building - 10pcs, - £37.51
Easy use model • Base can easily • Modeling carved drawing - Free postage - New and Used
Easy use model • Base can easily • Modeling carved drawing - Free postage - New and Used
215mm hollow concrete - 215mm, - £275.00
Timber sheet materials • 2026 tinhay building • Supplies ltd trading - Free postage - New and Used
Timber sheet materials • 2026 tinhay building • Supplies ltd trading - Free postage - New and Used
Gauge wills model - model, railway - £7.20
Wills modern ssm316 • Palisade fencing gates • Ck11 semi detached - Free postage - New and Used
Wills modern ssm316 • Palisade fencing gates • Ck11 semi detached - Free postage - New and Used
Multi block interlocking - multi, - £180.00
600 600mm 514kgs • Listed price one • Block collected from - Free postage - New and Used
600 600mm 514kgs • Listed price one • Block collected from - Free postage - New and Used
Vintage auriol screen - vintage, - £44.64
Vintage auriol screen • Block mould decorative • Concrete - Free postage - New and Used
Vintage auriol screen • Block mould decorative • Concrete - Free postage - New and Used
Matt finish block paving - matt, -block - £56.50
Depending surface you • Can apply concrete • Sealer pro brush - Free postage - New and Used
Depending surface you • Can apply concrete • Sealer pro brush - Free postage - New and Used
Block paving seal - , coating - £89.99
Before painting your • Garage floor important • Repair any cracks - Free postage - New and Used
Before painting your • Garage floor important • Repair any cracks - Free postage - New and Used
Dolls house red blocks - house, - £11.86
50pcs mini cinder • Blocks realistic fake • Bricks micro building - Free postage - New and Used
50pcs mini cinder • Blocks realistic fake • Bricks micro building - Free postage - New and Used
Block paving coating - , - £89.99
Before painting your • Garage floor important • Repair any cracks - Free postage - New and Used
Before painting your • Garage floor important • Repair any cracks - Free postage - New and Used
Block paving concrete imprint - £95.99
Block paving sealer • Heavy duty high • Impact clear wet - Free postage - New and Used
Block paving sealer • Heavy duty high • Impact clear wet - Free postage - New and Used
Buff concrete garden wall - garden, - £37.10
300 - Free postage - New and Used
300 - Free postage - New and Used
Various building materials - various, - £618.70
Agrob buchtal tiles • Blue circle rapid • Set portland cement - Free postage - New and Used
Agrob buchtal tiles • Blue circle rapid • Set portland cement - Free postage - New and Used
Concrete slabs machine - concrete, - £35086.70
Over 2000 450 • 600 carriers moulds • Loading very good - Free postage - New and Used
Over 2000 450 • 600 carriers moulds • Loading very good - Free postage - New and Used
Grain walling scale - walling, - £1.17
Concrete blocks are • 25mm square cross • 50mm long depending - Free postage - New and Used
Concrete blocks are • 25mm square cross • 50mm long depending - Free postage - New and Used
Spectrum tc10 general - ox, - £10.00
Item spectrum tc10 • General purpose 230mm • Suitable intended use - Free postage - New and Used
Item spectrum tc10 • General purpose 230mm • Suitable intended use - Free postage - New and Used
Concrete lego block lifting - lego, - £125.50
Terwa ton lifting • Concrete lego blocks • Eye fork lift - Free postage - New and Used
Terwa ton lifting • Concrete lego blocks • Eye fork lift - Free postage - New and Used
Concrete dolly block cavity - concrete, - £116.00
Timber sheet materials • Trade diy 2026 • Tinhay building supplies - Free postage - New and Used
Timber sheet materials • Trade diy 2026 • Tinhay building supplies - Free postage - New and Used
Block paving imprinted - block, & - £32.50
Depending surface you • Can apply concrete • Sealer pro brush - Free postage - New and Used
Depending surface you • Can apply concrete • Sealer pro brush - Free postage - New and Used
Fog models scale - fog, 1/35 - £10.32
Fog models diorama • Products cast hard • Ceramic this highly - Free postage - New and Used
Fog models diorama • Products cast hard • Ceramic this highly - Free postage - New and Used
Dolls house pallet 24 - dolls, of - £31.99
Dolls house • Mouldings trims timber • Houses buildings - Free postage - New and Used
Dolls house • Mouldings trims timber • Houses buildings - Free postage - New and Used
Water based sealer matt - based, - £50.98
Block paving printed • Water based sealer • Gloss eco friendly - Free postage - New and Used
Block paving printed • Water based sealer • Gloss eco friendly - Free postage - New and Used
Spectrum rc10 general - rc10, - £10.00
Item spectrum rc10 • General purpose 230mm • Suitable intended use - Free postage - New and Used
Item spectrum rc10 • General purpose 230mm • Suitable intended use - Free postage - New and Used
Block paving imprinted - block, & - £77.50
Depending surface you • Can apply concrete • Sealer pro brush - Free postage - New and Used
Depending surface you • Can apply concrete • Sealer pro brush - Free postage - New and Used
Block paving imprinted - block, - £117.50
Depending surface you • Can apply concrete • Sealer pro brush - Free postage - New and Used
Depending surface you • Can apply concrete • Sealer pro brush - Free postage - New and Used
Outhouse privy outside - privy, toilet - £6.51
Complete brick outhouse • Parts scenery scale • Gauge layouts dioramas - Free postage - New and Used
Complete brick outhouse • Parts scenery scale • Gauge layouts dioramas - Free postage - New and Used
Scale construction - scale, - £8.99
Kit features breeze • Blocks hollow building • What better - Free postage - New and Used
Kit features breeze • Blocks hollow building • What better - Free postage - New and Used
Quality grey concrete - x, - £120.00
Also have various • Types sizes available • Silver grey mid - Free postage - New and Used
Also have various • Types sizes available • Silver grey mid - Free postage - New and Used
Concrete blocks seconds - concrete, - £52.70
Interlocking concrete block • Seconds 20t blocks • Various sizes available - Free postage - New and Used
Interlocking concrete block • Seconds 20t blocks • Various sizes available - Free postage - New and Used
Used concrete interlocking - used, - £52.70
Used concrete interlocking • 680 700 security • Collection only - Free postage - New and Used
Used concrete interlocking • 680 700 security • Collection only - Free postage - New and Used
Try this: fascia soffit | victorian pavers | screen wall blocks | concrete screed | temporary fencing | terca bricks | cast iron manhole cover | breathable membrane | bullnose bricks | plasterboard props
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Everything you need to know about concrete building blocks
Whether you are looking for a brand-new or second-hand concrete building blocks, eBay offers one of the largest selections available online. With 48 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at £1.17, while premium listings can reach £35086.7 — giving you a wide budget spread to work with. The average price of £824.41 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.