How Much Does It Cost to Build a Garden Pond?

A garden pond typically costs between £260 and £530 per square metre to build in 2026. If you want the sight and sound of water without the digging, a standalone water feature costs about £500 on average. The final bill for any water project depends on how much earth needs moving, the liner you choose and whether you need pumps and filters wired in.

What kind of pond do you want?

You have several options when planning a water feature. A small preformed pond is bought as a rigid shape and dropped into a matching hole. A flexible liner pond allows you to create your own shape and size. A wildlife pond is designed specifically to attract frogs, birds and insects, blending naturally into the soft landscaping.

A larger fish pond, such as a koi pond, requires deep water and heavy filtration to keep the fish healthy. If you want the sound of water without the deep excavation, a standalone water feature is the alternative.

How much a garden pond costs

The table below shows the typical build and running costs for different types of garden ponds and water features.

These are typical published prices for 2026, and the quotes you receive from local landscapers will differ.

Size and depth set the base cost of your project. Spoil from even a modest pond is measured in tonnes. The physical labour of digging this out and the cost of taking it away are major factors in your overall garden landscaping cost.

Access for the dig can move the price by about 20 per cent. If your garden only has wheelbarrow access, a quick digger day turns into several expensive hand-dig days. If you live in London, expect prices to run 25 to 30 per cent above the baseline. Always check whether the quotes you receive include VAT.

A better liner grade adds £100 to £600 to the materials bill. Filtration costs between £200 and £2,000 depending on your fish stock, whereas wildlife ponds need very little filtration equipment.

Choosing the right spot

According to RHS wildlife pond guidance, you should have at least part of the pond in full sun. This ensures the water warms up in spring to encourage plant and animal life. You also need some shade over the water to reduce algae growth in the peak of summer.

Leaf fall from nearby trees is the most common maintenance complaint from pond owners. Avoid placing your new pond directly under large deciduous trees if you can. If you need to cut back roots or branches to make room, you must check the rules first.

A Tree Preservation Order makes it an offence to cut down, lop, uproot or damage a protected tree without the council's consent. Work on trees in a conservation area normally needs six weeks' notice to the council.

Depth, shape and shallow edges

For a wildlife pond, the RHS suggests a depth that varies from 20 to 60cm. This varying depth creates different temperature zones for wildlife and suits different types of aquatic plants. Fish ponds have different needs, so ask your landscaper what depth your design needs. A wildlife pond also needs a long, shallow slope on at least one side so that frogs, hedgehogs and other wildlife can get in and out of the water.

The edges of your pond need careful planning if they meet hard landscaping. If you surround the water with paving, the landscaper must lay a proper sub-base. A sub-base is compacted crushed stone, often called MOT Type 1, which sits under paving and artificial grass to prevent sinking.

The paving must also have falls, which is the slight slope that sheds water away from the surface. You must ensure dirty run-off does not pool or flow back into your clean pond water.

Liners and preformed ponds

Butyl liners are the easiest way to make a natural shape with varying depths and slopes. A flexible liner adapts to whatever hole you dig. Upgrading to a better liner grade adds £100 to £600 to the build, but an EPDM liner outlasts cheaper PVC options.

Preformed plastic or fibreglass ponds are tough and quick to install. They are a popular choice for small spaces, but they usually lack the shallow slope required for a good wildlife habitat.

Pumps, filters and outdoor electrics

If you keep fish or want a moving fountain, you need a pump and a filter. An outdoor electrical supply with RCD protection adds £150 to £450 to the project. Pond electrics should be a permanent outdoor supply put in by a qualified electrician, never a temporary extension lead trailing across the lawn.

You must use a residual current device (RCD) with all outdoor electrical equipment. A mains-supplied garden water pump should be protected by an RCD that is tested at least every three months. The pump must be installed in line with the manufacturer's instructions.

If the electrical supply develops a problem, it should be repaired by a registered electrician. You should never attempt to wire outdoor pond equipment yourself.

Ponds and young children

Garden ponds are involved in one in four (26 per cent) of all child drownings in the home. There is very little time to act if a child falls in. You must supervise young children as closely as you can near any pond. If you have young children, you should discuss safety options with your landscaper before you start digging.

You can cover the water with a rigid metal grille. Flimsy chicken wire is not up to the job, and you must check a rigid grille regularly to ensure it remains secure. You can fence the pond with a barrier at least 1.1 metres high and keep the gates locked. A fence can give a false sense of security because young children can be good climbers.

For peace of mind while children are young, you can fill the pond in and use it as a flower bed or sandpit, or choose a standalone water feature instead of an open pond. No barrier replaces close supervision, and you should never assume any grille, fence or cover makes a pond completely safe.

Decking is sometimes used to edge a pond. If your decking runs over part of a pond, always make sure children are supervised.

Do you need planning permission?

Under permitted development rules in England, outbuildings cover sheds, greenhouses and other ancillary garden buildings and enclosures, including ponds. You can build these without planning permission subject to certain conditions. You must not build anything forward of the principal elevation, which usually means the front of the house.

Additions or other buildings must cover no more than half the land around the original house. Permitted development rights apply to houses, not flats or maisonettes. Listed buildings need consent for significant work, and conservation areas, National Parks and other designated land have stricter rules.

Domestic ponds are normally permitted development. If you live in a flat, a listed building or a designated area, or outside England, check with your council first.

Looking after a new pond

Autumn and winter are the ideal times to make a new pond. Mid-spring to early summer is the best time for planting. When filling the pond, top it up with rainwater. Use tap water only as a last resort.

The main upkeep task is removing excess autumn leaves before they sink and decay at the bottom. Keeping the water clear of debris helps your pump and filter run smoothly and keeps the water healthy for wildlife.

What a pond quote should include

Landscaping is not a licensed trade, so vetted membership and evidence of past work matter. The British Association of Landscape Industries (BALI) says its Accredited members are vetted on workmanship, skill and health and safety. The Association of Professional Landscapers (APL) says members are assessed, regularly inspected and TrustMark accredited. TrustMark is the government-endorsed quality scheme. The Society of Garden and Landscape Designers (SGLD) is the professional body for designers. Membership is a good sign, not a guarantee.

A quote is a fixed price, while an estimate is a rough guess that can end up higher. Ask for written quotes from at least three different traders. A detailed pond quote should state:

• The exact size and depth of the excavation
• The specific liner type and grade
• The materials used for the edging
• The exact pump and filter models
• The outdoor electrics and who will install them
• The plan for spoil removal
• The soft landscaping and planting details
• Any guarantee offered on the work

A poor landscaper cuts corners on the groundwork that nobody sees. Be wary of doorstep callers offering cheap paving or leftover materials to finish your pond surround. You should never agree to cash deals with no written specification. Watch out for thin or missing sub-base layers and slabs laid on dabs of mortar instead of a full bed. Without a proper fall, water pools on the surface or runs towards the house.

A business that transports waste, including its own, must register as a waste carrier. They can get an unlimited fine if they do not. Registered carriers appear on a public register of waste carriers, brokers and dealers that anyone can search online. Removing tonnes of earth will add to your garden clearance cost, so check who is taking it and where it is going.

Under the Consumer Rights Act 2015, work must be done with reasonable care and skill. If not, you can ask for it to be put right or seek a partial or full refund. Citizens Advice suggests asking for two to three recent references and checking insurance documents. Agree a written contract covering the work, timings, clean-up, materials and payment terms. Keep any deposit to 25 per cent at most, pay by card not cash, and pay in stages. You might be able to cancel within 14 days of telling the trader to go ahead or signing a written contract.

Common questions

What pushes the price up when building a pond?

The amount of soil dug out and taken away is a major factor, alongside the size and depth of the hole. Poor access that forces labourers to use wheelbarrows instead of a mechanical digger can move the cost by about 20 per cent. Upgrading to a durable EPDM liner and installing heavy filtration for fish will also increase the final bill.

Are garden water features a good alternative?

A standalone water feature costs between £300 and £1,500 to buy and install, making it cheaper than most dug ponds. It costs £1 to £4 a month to run. It avoids having an open pond, so it is one option to consider while children are young, although young children still need supervising around any water.

When is the best time to buy pond plants in the UK?

Mid-spring to early summer is the best time for planting a new pond. You should aim to dig the hole and install the liner during the autumn or winter. This allows the pond to settle and fill with winter rainwater before you add the plants.

Do small garden ponds need a pump?

Wildlife ponds need very little filtration and often function perfectly well without a pump. If you want a small preformed pond that just attracts frogs and birds, still water is fine. Ponds with fish require a pump and filter to keep the water clean and oxygenated.

Next steps

Before you hire a landscape contractor to build your pond, make sure you have the following details confirmed.

• Decide whether you want a wildlife pond, a fish pond or a standalone water feature.
• Assess your garden for a spot that gets full sun but has some shade, away from large deciduous trees.
• Agree on a safety plan if young children live at or visit your home.
• Check the public register to ensure your landscaper is a registered waste carrier for the excavated soil.
• Ask for three written quotes that break down the cost of the dig, the liner, the electrics and the waste removal.

A well-built pond transforms a garden, bringing in wildlife and providing a relaxing focal point throughout the year. Take your time to compare quotes, check credentials and agree on a clear specification before any digging begins. When you are ready to start your project, you can find a landscaper near you to discuss your ideas and request a site visit.