September 29th, 2025

When advising clients on external works, a frequent question you may face is: how much will it cost to build a garden wall? The answer isn’t straightforward, as you’ll no doubt be aware that the price depends on a range of factors: wall height, thickness, choice of bond, materials, foundation requirements, and site conditions. 

This guide outlines the key cost drivers you should discuss with clients, helping them understand not just the price but also the structural integrity and aesthetic preferences. We’ve included example figures for one-and-a-half brick walls and two-brick walls to give a clear starting point for budgeting.

Garden Wall Cost Calculations

In our garden wall build cost calculations, we assume these walls are constructed in English bond, one of the most common brickwork types (see FAQs for information about the types of bonds). 

Our example costings are based on a wall of 15m² (equivalent to 10 metres long at 1.5 metres high) and include twice-weathered coping stones for weather protection and a clean finish. We look at three examples comprising one-and-a-half brick walls and two-brick wide walls:

• One brick wide: Typically used for low garden or boundary walls; cost-effective but not ideal for taller structures.
• One and a half bricks wide: Greater stability; suitable for medium-height boundary walls or where extra durability is required.
• Two bricks wide: Extremely strong; used for tall, freestanding, or retaining walls; more expensive in both materials and labour.

In terms of build specification, BuildPartner gives you three broad options to choose from:

• Basic spec is a basic finish; e.g., Leyland, Everest, Wickes.
• Standard spec is a standard finish; e.g., Dulux, Hamilton, Slim Line.
• Premium spec is a high-spec finish; e.g., Farrow & Ball, Fine Line, Siemens.

In this article, we’ve provided a breakdown of the cost of building a garden wall to a standard specification. In addition, we have provided three different benchmarks to show the range of pricing you can expect among different contractors. These are: 

• Low benchmark – smaller companies are generally lower cost but less specialised and with low project management function; good for low/mid-spec projects and tight budgets.

• Mid benchmark – medium-sized companies offer a balanced mix of cost-effectiveness and specialisation; good for mid-range projects for effective execution within moderate budgets.

• High benchmark – larger companies generally have a higher cost base but can handle a wide variety of specialist tasks; good for mid/high-spec projects and project management.

The specification and benchmark you choose will have a major impact on the overall cost of building a boundary wall, so it’s important to align them with your budget and the level of finish you’re aiming for.

Cost Of Building A One-and-a-Half Brick Wall – Facing Bricks

The table below shows the average cost of building a one-and-a-half brick wall with facing bricks (15m2):

One-and-Half Brick Wall (Facing Bricks)	Total Average Build Cost			Average Cost Per Sq Metre
	Low Benchmark	Mid Benchmark	High Benchmark	Low Benchmark	Mid Benchmark	High Benchmark
East Anglia	£4,569	£5,109	£5,607	£305	£341	£374
Greater London	£4,820	£5,409	£5,915	£321	£361	£394
Inner London	£4,941	£5,608	£6,015	£329	£374	£401
Midlands	£4,528	£5,063	£5,557	£302	£338	£370
North England	£4,705	£5,261	£5,774	£314	£351	£385
Northern Ireland	£4,609	£4,988	£5,555	£302	£333	£370
Scotland	£4,691	£5,245	£5,757	£313	£350	£384
South East	£4,457	£4,984	£5,530	£323	£361	£396
South West	£4,514	£5,181	£5,686	£309	£345	£379
Wales	£4,395	£4,914	£5,271	£293	£328	£351
Average	£4,623	£5,176	£5,667	£311	£348	£381

All costs exclude VAT.

Here’s what the data shows for building a one-and-a-half brick wall with facing bricks:

• The minimum cost is £4,395, and the maximum cost is £6,015.
• The total average cost is £5,155, or £347 per square metre.

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Cost Of Building A Two-Brick Wall – Facing Bricks

The table below shows the average cost of building a two-brick wall with facing bricks (15m2):

Two-Brick Wall (Facing Bricks)	Total Average Build Cost			Average Cost Per Sq Metre
	Low Benchmark	Mid Benchmark	High Benchmark	Low Benchmark	Mid Benchmark	High Benchmark
East Anglia	£7,712	£8,624	£9,465	£514	£575	£631
Greater London	£8,083	£9,059	£9,920	£539	£604	£661
Inner London	£8,306	£9,406	£10,112	£554	£627	£674
Midlands	£7,651	£8,556	£9,390	£510	£570	£626
North England	£7,914	£8,849	£9,712	£528	£590	£647
Northern Ireland	£7,905	£8,853	£9,717	£528	£590	£648
Scotland	£7,893	£8,826	£9,687	£526	£588	£646
South East	£7,471	£8,354	£9,169	£541	£605	£664
South West	£7,631	£8,730	£9,582	£521	£582	£639
Wales	£7,455	£8,336	£8,925	£497	£556	£595
Average	£7,802	£8,759	£9,568	£526	£589	£643

All costs exclude VAT.

Here’s what the data shows for the cost of building a two-brick wall with facing bricks:

• The minimum cost is £7,455, and the maximum cost is £10,122.
• The total average cost is £8,710, or £586 per square metre.

Cost Of Building A Two-Brick Wall – Premium Bricks

The table below shows the average cost of building a two-brick wall (15m2) with premium bricks, such as limestone or sandstone bricks:

All costs exclude VAT.Here’s what the data shows for the cost of building a two-brick wall (15m2) with premium bricks, such as limestone or sandstone bricks:

• The minimum cost is £9,475, and the maximum cost is £12,593.
• The total average cost is £11,083, or £739 per square metre.

Average Cost Of Building A Boundary WallSo, how much does it cost to build a boundary wall in the UK? Based on the three types of builds covered in this article, it costs on average (when using a mid-benchmark contractor):

• One-and-a-Half Brick Wall (Facing Bricks): £5,176, or £348 per square metre. 
• Two-Brick Wall (Facing Bricks): £8,759, or £589 per square metre.
• Two-Brick Wall (Limestone / Sandstone): £11,162, or £744 per square metre. 

It’s also worth noting that these projects were based on a standard specification, so your final cost could be lower or higher depending on the quality of materials you choose.Start your free trial with BuildPartner to get a bespoke estimate of your construction project within minutes.Please remember that all costs exclude VAT.Frequently Asked Questions About Building A Boundary WallHere are some answers to frequently asked questions about building boundary walls.What is the best brick type for a boundary wall?Facing bricks are a popular choice for visible boundary walls because they look good and weather well. Engineering bricks, on the other hand, are stronger, denser, and more resistant to frost and water penetration, making them ideal for foundations or damp-prone areas.For a more premium finish, natural stone such as limestone or sandstone can be used, which are exceptionally durable and enhance the character of a property. Reclaimed bricks are also growing in popularity, but they should be checked for strength before use.What are the main types of brick bonds (patterns) for boundary walls?The three most common brick bonds are:

• Stretcher bond: bricks laid with their long face showing in each course. While its simple and economical, it’s only suitable for half-brick-thick walls (decorative or low walls).
• English bond: alternating courses of stretchers (long face) and headers (short face). Strong, traditional, and ideal for one-brick-thick structural walls.
• Flemish bond: each course alternates stretchers and headers, creating a distinctive pattern. More decorative but requires greater skill and time to lay.

Other bonds, such as stack bond or header bond, exist but are less common in boundary walls as they are generally weaker or used for specific design purposes.Why would I build a wall two bricks wide?Two-brick-thick walls (around 450 mm) are used for extra strength and stability, often in retaining walls or very tall boundary walls. They can also be required in areas exposed to high winds.What are once-weathered and twice-weathered coping stones?When finishing the top of a boundary or garden wall, coping stones are needed for protecting the wall from rain and frost. The two most common types are:

• Once-weathered coping stones: These have a single sloped surface that is angled away from the wall to shed rainwater. 
• Twice-weathered coping stones: These have two slopes (a top slope and a chamfered or angled underside) which direct water away from the top and sides of the wall.

The main distinction is in how the stone is angled to shed water. Twice-weathered coping stones are generally considered more durable and premium.

Two-Brick Wall (Premium Bricks)	Total Average Build Cost			Average Cost Per Sq Metre
	Low Benchmark	Mid Benchmark	High Benchmark	Low Benchmark	Mid Benchmark	High Benchmark
East Anglia	£9,890	£11,059	£12,138	£659	£737	£809
Greater London	£10,261	£11,494	£12,593	£684	£766	£840
Inner London	£10,583	£11,940	£12,143	£706	£796	£810
Midlands	£9,829	£10,991	£12,063	£655	£733	£804
North England	£10,092	£11,284	£12,385	£673	£752	£826
Northern Ireland	£9,890	£11,059	£12,138	£659	£737	£809
Scotland	£10,071	£11,261	£12,360	£671	£751	£824
South East	£9,475	£10,594	£11,754	£632	£706	£784
South West	£9,809	£11,166	£12,255	£654	£744	£817
Wales	£9,633	£10,771	£11,499	£642	£718	£767
Average	£9,953	£11,162	£12,133	£664	£744	£809