Decking costs: What to expect when building an outdoor deck

Building a deck can help extend living spaces outdoors. It’s the perfect place to hang out with family and friends while enjoying the beautiful garden view. However, building a deck can be costly, so you have to plan your budget well to avoid unnecessary expenses. 

Decking costs vary widely based on different factors, including the deck size and shape, location, and project scope. Keep reading to learn more about the cost of installing a deck, whether a simple timber deck or a spacious composite deck. 

How much does decking installation costs in UK? 

There are three primary decking services: installation, repair, and replacement. You can expect to pay more for installation and less for repair and replacement. Here's a table listing the estimated decking costs per square metre (m²):

A professional uses a nail gun to install treated timber decking boards.(Source: iStock)

What are the most popular deck materials?

The material used for your deck will largely affect the overall cost. Naturally, some types of deck materials are cheaper than others. Know that durability and aesthetics are also factors that can influence your choice of material. 

Treated pine

This is the most affordable decking material out there. It's the most common and easy-to-work-with decking material option, which you can leave clear, stained, or painted, depending on your preference. 

Hardwood timber

Timber decks are more costly than treated pine or recycled plastic ones, but they last longer if properly maintained. You can find a range of hardwood decking to match the flooring throughout your property. 

This kind of synthetic decking is an excellent alternative to wood. It's a wood-polymer composite that has become popular for being the more environmentally friendly choice. While low-maintenance, it isn't completely resistant to mould and mildew. The price can also almost double for high-end wood, like cedar and redwood.

What are the factors that affect decking costs?

If you're curious about how much a deck costs to replace or install, these variables can influence your total project expenses:

Deck size and shape 

Decking costs can vary based on the size and shape of the structure. The number of decking boards you'll need and the job's complexity will be determined by the size and shape of your deck. It takes more time if the deck's proposed shape is curved and has multiple levels.

Project scope 

Minor deck improvement projects are doable in a shorter time and require fewer materials, but they also don't need planning permission. On the other hand, a bigger deck renovation or installation project needs a licenced contractor and regulatory permits. 

The UK government, through local councils, requires a property owner to obtain planning permission before building something new, making a major change, having an extension built, or changing the use of a building. 

On top of the planning permit, you might need more authorisations. Consult your contractor and local council to know which permits you must secure before starting your decking project.

Your location

The requirements for planning permits and decking costs vary per region. Some require you to get a planning permit for decking and raised patios above ground by more than 30 centimetres. Meanwhile, the deck height limit in South Lanarkshire before needing a planning permit is 50 centimetres. 

Without the proper approval, your project might be served an enforcement notice ordering you to remove any additional fixtures or undo any improvements made.

Labour

Your location can also affect the labour cost of decking. For example, work in urban areas can be more expensive because of higher contractor rates and high-end materials. On average, labour rates for decking start at £20 per square metre. 

Timber decking installation begins with a solid gravel foundation and secure joists. (Source: iStock)

State of the installation site 

Garden decking services can be more expensive if the area or surrounding structures need more work done. Properties that have not been maintained in a long time will require a more thorough cleaning even before the land is assessed. 

Accessories and decking features

Apart from the materials, additional accessories and features will also determine the total cost of the installation service. Extra nuts and bolts or timber for bearers and joists for your deck can increase the price.

Elevating your deck as a feature can also raise the price since it's more labour-intensive and might require more materials and accessories. 

Demolition work

If you want to renovate and completely change an existing deck (e.g., upgrade the materials and add features), you must consider the cost of demolition. You can ask your contractor for a quote that includes your new decking project's pre-construction or pre-installation process.

Plan and build your deck with Airtasker

There's no denying that high-quality decking can improve and protect your property. That's why spending money on decking can be a good investment. A new or renovated deck can add value to your property.

While the points above can affect the overall decking cost, the most important consideration is finding the right decking installation specialist. When posting a task on our platform, mention your budget, location, preferred materials, and other essential details to get a more accurate quote. 

Then, wait for offers from Taskers near you. You can check their profiles, reviews, and ratings. Make sure to get everything covered for a smooth decking installation project!