How Much Does Decking Cost? (2026 UK Cost Guide)

The final cost depends on the decking material, the size of the decking area, labour costs, site preparation and any additional features such as steps, lighting or balustrades.

Adding decking is one of the most effective ways to improve an outdoor space. Whether it's a raised entertaining area, a family seating space or a garden dining area, a well-built deck creates additional usable space while improving the appearance and functionality of the garden. It can also increase the appeal of a property, with some studies suggesting a quality deck may add between 4% and 10% to a home's value, although this varies depending on the location and overall property.

Homeowners researching decking in Glasgow and Ayrshire will find that costs vary considerably depending on the material selected, the complexity of the installation and the condition of the site.

This guide explains average decking costs, compares softwood, hardwood and composite decking, explores labour costs and highlights the factors that influence the total project cost.

Average Decking Costs in the UK

Decking prices vary significantly depending on the material used and the scope of the project. Softwood remains the most affordable option, while hardwood commands the highest price thanks to its durability and premium appearance. Composite decking sits between the two, offering excellent longevity with very little maintenance.

Typical installed costs include both materials and labour.

Most homeowners spend around £2,600 on a medium-sized decking project, although larger installations or premium specifications will naturally cost more. While these figures provide a useful guide, they don't include optional extras or difficult site conditions that can increase the overall cost.

It's also worth remembering that the total project cost includes more than simply buying decking boards. Timber framing, raised joists, subframes, fixings, waste disposal, site preparation and finishing details all contribute to the final quotation.

What Affects Decking Costs?

Several factors determine how much a decking project will cost. Even two gardens of a similar size can have very different installation costs depending on the design and ground conditions.

Decking Material

Material choice has the biggest influence on decking prices.

Softwood decking offers the lowest upfront cost and remains one of the most popular choices for homeowners working within a fixed budget. Composite decking requires a higher initial investment but offers minimal maintenance and a significantly longer lifespan. Hardwood decking provides a premium finish with exceptional durability, although it also carries the highest purchase price.

When comparing different materials, it's important to consider lifetime ownership costs rather than simply the initial quotation. A material with a higher upfront cost may prove better value over several decades because of lower maintenance requirements and a longer lifespan.

Decking Area

The size of the decking area has a direct impact on the total cost. Larger decks require more raw materials, additional structural timber and longer installation times.

Even relatively small increases in deck size can noticeably affect the overall budget because both material costs and labour costs rise accordingly.

Ground Conditions

Installing decking on flat ground is generally quicker and more straightforward than building on uneven or sloping ground.

Raised decks often require additional support posts, stronger framing and raised joists to provide adequate structural support. Gardens with poor access may also require more labour time, increasing installation costs.

Ground preparation can also influence the final quotation. Levelling the site, removing vegetation and disposing of waste all contribute towards the total project cost before installation even begins.

Labour Costs

Labour costs generally range from around £22 to £55 per m² depending on the complexity of the installation and regional labour rates.

Some professional installers charge per square metre, while others work on a daily rate. Daily labour charges commonly range between £260 and £340, with prices in London often being 20 to 25% higher than the national average.

Most small decking installations take between one and two days to complete. Medium-sized projects generally require between one and three days, while larger bespoke designs naturally take longer.

Additional Features

Many homeowners choose to include features that improve both appearance and functionality.

These may include:

• Steps

• Balustrades

• Built-in seating

• Integrated lighting

• Privacy screens

• Planters

• Fascia boards

While these additions increase the initial investment, they often enhance the finished deck and create a more practical outdoor living space.

Planning Permission and Building Regulations

Many decking projects can be completed without planning permission, although there are exceptions.

Raised decks, particularly those exceeding certain height thresholds, or installations that significantly alter the property's appearance may require planning approval. Building regulations may also apply where structural safety is a consideration.

Before installing a new deck, it's always advisable to confirm whether any permissions are required for the specific project.

Softwood Decking Costs

Softwood decking remains one of the most popular options because it offers the lowest upfront cost while creating an attractive and functional outdoor space. Pressure-treated softwood is widely available, easy to work with and suitable for everything from compact seating areas to larger family gardens.

On average, softwood decking costs between £70 and £90 per m² installed, although pressure-treated decking boards alone can range from around £40 to £90 per m² depending on the quality of the timber and supplier.

The biggest advantage of softwood is affordability. For homeowners looking to keep initial costs down, it provides a cost effective way to install garden decking without compromising on appearance.

However, lower upfront costs usually mean higher ongoing maintenance. Softwood decking requires annual staining or sealing to protect it from moisture, UV damage and decay. Regular deck cleaning is also recommended to remove dirt, moss and algae that naturally build up throughout the year.

With proper maintenance, softwood decking can typically last between 10 and 15 years. Without regular treatment, its lifespan may be significantly reduced, making ongoing maintenance an important part of the overall ownership cost.

Hardwood Decking Costs

Hardwood decking is often considered the premium option thanks to its natural appearance, strength and impressive lifespan. Although it carries a higher purchase price, many homeowners choose hardwood because of its durability and timeless finish.

Hardwood decking typically costs between £110 and £130 per m² installed, making it the most expensive decking material covered in this guide. The higher cost reflects both the quality of the timber and its ability to withstand years of use.

Unlike softwood, hardwood generally requires periodic oil treatments rather than annual staining. This helps preserve the timber's natural colour while protecting it against weathering and everyday wear.

One of hardwood's biggest advantages is longevity. A well-maintained hardwood deck can last for more than 30 years, making it an attractive option for homeowners planning a long-term investment.

Composite Decking Costs

Composite decking has become increasingly popular in the UK because it combines a modern appearance with excellent durability and very low maintenance requirements.

Composite decking typically costs between £90 and £110 per m² installed. Although the higher upfront cost is greater than softwood, it remains lower than many premium hardwood products while offering a significantly longer lifespan.

Composite boards are manufactured using a combination of recycled wood fibres and plastic, making them highly resistant to rot, insect damage and fading. Unlike timber decking, composite boards do not require annual staining or sealing and generally only need occasional cleaning to maintain their appearance.

Many manufacturers estimate that composite decking can last up to 30 years with minimal maintenance. Over a 25-year period, maintenance costs are estimated to average around £250, making lifetime ownership costs considerably lower than many traditional timber alternatives.

For homeowners weighing up softwood and composite decking, it's worth looking beyond the initial quotation. While composite has a higher upfront cost, the savings on maintenance and its longer lifespan often make it better value over time.

Labour Costs for Decking Installation

Labour costs are one of the largest parts of any decking project and should always be considered alongside material costs.

Professional decking installation generally costs between £22 and £55 per m², depending on the size of the project, the complexity of the design and local labour rates. Some contractors charge a daily rate instead, with experienced installers typically charging between £260 and £340 per day.

Most small decks can be installed within one or two days. Medium-sized projects generally take between one and three days, while raised decks or bespoke layouts often require additional time because of the extra framing and structural work involved.

Although choosing the cheapest quotation may seem appealing, workmanship has a significant impact on the lifespan of the finished deck. Homeowners planning a new decking project in the region can also benefit from obtaining quotations from experienced Joiners Ayrshire, as accurate site surveys help identify potential issues before installation begins.

Additional Costs to Consider

The cost of decking is not limited to the materials and installation alone. Many projects involve additional work that can increase the overall cost, particularly where the garden requires preparation before construction begins.

One of the most common additional costs is site preparation. Uneven gardens may need levelling before work can start, while existing paving, old decking or vegetation may need to be removed. Waste removal is another factor that should be included within the quotation, particularly for larger projects.

Homeowners may also choose to include optional features that improve the appearance or functionality of the finished deck. These can include:

• Steps

• Handrails and balustrades

• Built-in seating

• Planters

• Deck lighting

• Fascia boards

• Privacy screens

Although these additions increase the initial investment, they can significantly improve both the finished appearance and the usability of the outdoor space.

Composite vs Timber Decking Costs

One of the biggest decisions when planning a decking project is choosing between composite decking and timber decking. While the initial prices are different, ongoing maintenance and expected lifespan should also be considered before making a decision.

Softwood decking remains the cheapest option to install, making it attractive for homeowners looking to reduce upfront costs. However, it requires annual staining or sealing, regular deck cleaning and occasional repairs throughout its lifetime.

Composite decking costs more initially but requires very little maintenance. It doesn't need staining, sealing or painting and generally only requires occasional cleaning to keep it looking its best. Many composite products are also scratch resistant and designed to withstand years of exposure to the weather.

Hardwood decking sits at the premium end of the market. Although it has the highest purchase price, it offers outstanding durability and can last for decades when properly maintained.

When comparing both materials, it's important to think beyond the installation cost alone. Composite decking typically lasts up to 30 years with minimal maintenance, while softwood decking usually lasts between 10 and 15 years and requires ongoing treatment throughout its lifespan.

Does Decking Add Value to a Property?

A professionally installed deck can make a property more attractive to potential buyers by creating additional usable outdoor living space.

Research suggests decking may add around 4% to a property's value, while some well-designed installations have been reported to increase value by between 5% and 10%. The exact increase depends on the quality of the installation, the overall garden design and the local property market.

Although patios generally add slightly more value in some areas, a well-built deck creates a strong connection between indoor and outdoor living, making gardens more practical for relaxing, entertaining and family use.

Composite decking may also appeal to buyers looking for minimal upkeep, while hardwood decking can add a premium finish that complements high-end landscaping projects.

Conclusion

The total cost of a decking project depends on much more than the price of decking boards alone. Material choice, labour costs, ground conditions, project size and optional features all contribute to the final quotation.

Softwood decking remains the most affordable option for homeowners looking to minimise upfront costs, while hardwood decking provides exceptional durability and a premium appearance. Composite decking sits between the two, offering an excellent balance of longevity, appearance and minimal upkeep that continues to make it one of the UK's most popular choices.

For an accurate quotation, every decking project should be assessed individually, as site conditions, material choices and design requirements all influence the final cost. Homeowners looking for Joiners in Ayr or Joiners in Kilmarnock can arrange a site survey and receive a quotation tailored to their property and project requirements.

Frequently Asked Questions

How much does decking cost per m²?

Softwood decking generally costs between £70 and £90 per m² installed. Composite decking typically costs between £90 and £110 per m², while hardwood decking usually ranges from £110 to £130 per m².

What is the cheapest decking material?

Softwood decking is usually the cheapest decking material because it has the lowest upfront cost. However, it requires regular maintenance throughout its lifespan.

Is composite decking worth the extra cost?

For many homeowners, yes. Although composite decking has a higher upfront cost, its minimal maintenance requirements and lifespan of up to 30 years often make it more economical over the long term.

How long does decking installation take?

Most small decking installations take between one and two days. Medium-sized projects generally take one to three days, while larger or more complex installations may take longer depending on the design and site conditions.