TL;DR — Garden Pond & Water Feature Cost At A Glance
- Most UK households pay £1,200–£4,000 to have a garden pond professionally built in 2026. A small preformed pond dropped into a dug hole starts around £450–£900; a full koi pond with proper filtration runs £8,000–£15,000 and up.
- A water feature is the cheap way to get moving water. A self-contained unit supplied and installed averages about £300–£500, against £900+ for the smallest pond with a pump and filter.
- Filling in a pond costs less than most people fear — £150–£400 for a small preformed pond, £400–£1,000 for a typical garden pond, and £1,000–£2,500 where there's concrete to break out and spoil to cart away.
- Running costs are real but small. A 10W feature pump run 8 hours a day costs about £7.70 a year; a 90W pond pump left on 24/7 costs about £207 a year at Ofgem's 26.32p/kWh cap rate from 1 October 2026.
- London and the South East run roughly 20–35% above the rest of the UK, and access is the factor that moves a quote most — a pond only reachable by wheelbarrow through a side gate can add a full day of labour.
- Child safety is why a lot of these jobs happen. RoSPA reports garden ponds are involved in 26% of all child drownings in the home, and says filling the pond is the option to go for if you want genuine peace of mind.
Add to Preferred Sources How Much Does A Garden Pond Cost In 2026?
Three different jobs hide inside "pond costs", and it's worth knowing which one you're pricing.
Building one is groundworks. Somebody digs a hole, lines it, deals with the spoil, edges it, plumbs in a pump and filter, and plants it. The cost tracks the volume of earth moved far more closely than it tracks the pretty bits.
Running one is electricity and maintenance — modest for a wildlife pond with no pump at all, more noticeable for a koi pond that needs a pump, filter, UV clarifier and air pump running around the clock.
Getting rid of one is drainage, demolition, backfill and disposal. It's the query with the most search behind it, and it's usually driven by a toddler, a new puppy or a pond that's become a mosquito farm.
| Unit of sale | Rest of UK | London & South East |
|---|---|---|
| Landscaper day rate | £145–£250 | £180–£320 |
| Groundworker day rate | £200–£300 | £250–£380 |
| Small preformed pond, supplied and installed (up to 1,000 L) | £450–£900 | £560–£1,150 |
| Small flexible-liner pond (up to 5 m²) | £1,200–£3,000 | £1,500–£3,800 |
| Medium liner pond (5–15 m²) | £2,000–£4,000 | £2,500–£5,000 |
| Large or luxury pond with cascade and planting | £5,000–£7,000+ | £6,250–£9,000+ |
| Koi pond, 2×3×1 m, DIY build with bought filtration | £2,100–£8,800 | £2,600–£11,000 |
| Koi pond, professionally built to full spec | £8,000–£15,000+ | £10,000–£19,000+ |
| Self-contained water feature, supplied and installed | £250–£450 | £310–£560 |
| Pond removal and infill, small preformed pond | £150–£400 | £190–£500 |
| Pond removal and infill, medium garden pond | £400–£1,000 | £500–£1,250 |
| Pond removal, large or concrete pond | £1,000–£2,500 | £1,250–£3,150 |
Garden Pond & Water Feature Cost By Type
The construction method decides the price ceiling. A preformed shell caps what you can spend and what you can have; a flexible liner lets you dig any shape you like; concrete and fibreglass are what serious fish-keepers use because they take the weight of a bottom drain and a proper filter chamber.
| Type | Approx. size / spec | Rest of UK | London & South East |
|---|---|---|---|
| Pebble pool / reservoir feature | No open water | £150–£400 | £190–£500 |
| Preformed shell pond | 275–1,000 L | £450–£900 | £560–£1,150 |
| Wildlife pond, no pump or filter | 3–6 m², 0.6m deep | £450–£1,200 | £560–£1,500 |
| Flexible liner ornamental pond | 5–15 m², 0.6m deep | £2,000–£4,000 | £2,500–£5,000 |
| Raised pond, timber or block | 1–3 m² | £700–£2,500 | £875–£3,150 |
| Concrete or fibreglass pond | 10 m²+, 1m+ deep | £4,000–£12,000 | £5,000–£15,000 |
| Koi pond with full filtration | 2×3×1 m and up | £8,000–£15,000+ | £10,000–£19,000+ |
| Wall-mounted water feature | Fitted to a wall | £350–£700 | £440–£875 |
| Freestanding fountain | Reservoir base | £400–£800 | £500–£1,000 |
| Drilled rock / monolith | 0.6–1.2m tall | £400–£1,250+ | £500–£1,560+ |
| Pondless cascade or waterfall | 1.8m run and up | £800–£3,600+ | £1,000–£4,500+ |
| Formal rill | 3m+ channel | £650–£5,000+ | £810–£6,250+ |
| Solar-powered feature (no cabling) | Self-contained | £145–£330 supply only | £145–£330 supply only |
Running Costs
This is the line most quotes leave out, and published figures need re-doing at the current tariff. Ofgem's electricity price cap unit rate is 26.11p/kWh for July to September 2026, rising to 26.32p from 1 October. At that rate:
- A 10W self-contained feature run 8 hours a day is £7.68 a year
- A 45W feature is £34.58 a year
- A 90W pond pump left on 24/7 is £207.50 a year
- A 150W large pond pump is £345.84 a year
Add maintenance of £20–£100 a year on a feature and £100–£500+ on a stocked pond. An £8–£15 timer plug is the cheapest saving here — it typically cuts a feature's running hours, and its cost, by around two-thirds.
What Affects The Cost Of A Pond Or Water Feature?
1. Volume Of Earth Moved And Where The Spoil Goes
Excavation is the dominant cost and it's priced by the cubic metre — from around £20–£50/m³ at the low end to £150–£200/m³ at the high end, depending on access and disposal route. A modest 4×3m pond at 0.6m deep is roughly 7 m³ of spoil, or six to eight tonnes to shift. If it can't go into a raised bed on site it becomes a disposal cost — a builder's skip is £190–£450, and our garden clearance cost guide covers muck-away in detail.
2. Construction Method And Liner Choice
Materials are cheap relative to labour, but they're not equal. PVC liner runs £4–£10/m² and lasts 10–15 years; EPDM rubber is £5–£15/m² for 20 years plus; concrete is £10–£40/m²; fibreglass is £20–£40/m² for 25 years plus. Butyl and EPDM sheet starts around £9.25/m² at UK liner specialists. Always buy underlay too — a punctured liner is a full rebuild, not a repair.
3. Filtration, Pumps And UV Clarifiers
A wildlife pond needs none of this and costs correspondingly less. A fish pond needs all of it: submersible pumps run £50–£500+, external pumps £100–£500+, filters £50–£300 for small ponds and £100–£1,000 for larger ones, and UV clarifiers £100–£300 per unit. The pattern is stark by pond type — the filter for a medium ornamental pond is £150–£200, the same-sized fish pond needs £350–£650, and a large ornamental pond needs £2,500–£7,000.
4. Whether You Need An Outdoor Electrical Supply
Any mains pump needs a weatherproof outdoor socket on an RCD, and in England and Wales that's notifiable work under Part P of the Building Regulations — it needs a registered electrician and a certificate. Expect £85–£245 for a socket, with RCD versions £95–£245 and timer versions £125–£245, plus £10 per metre for armoured cable and about £150 for installation and test. Electrician hourly rates run £24–£28 in Northern Ireland to £50–£80 in London. A solar feature avoids the whole line item.
5. Access, Edging And Planting
If a mini-digger can reach the spot, a pond is a two-day job. If everything goes through a 750mm side gate by barrow, it's four. Edging stone runs £30–£100 per tonne for pond-edge rock and far more for hand-picked feature boulders — see our rockery installation cost guide for stone by the tonne. Aquatic plants are £5–£50 each, and you want six to twelve of them in a 5 m² pond.
6. Your Location
London and the South East run roughly 20–35% above the rest of the UK on labour, and materials arrive with a bigger haulage charge on top. Skip and grab access, permits for a skip on the road (£15–£60) and congestion charging all land in the same quote. Outside the South East, day rates for a landscape gardener sit around £110–£180, averaging £145.
What's Included — And What's Not
A standard pond installation quote covers:
- Marking out, excavation and shaping of shelves and margins
- Underlay and liner, or setting and backfilling a preformed shell
- Pump and filter supply and connection to an existing outdoor supply
- Basic edging with turf, stone or paving to hide the liner edge
- Filling, dechlorinating and commissioning the system
- Removal of spoil where the quote says so — check, because often it doesn't
Charged as extras:
- Spoil disposal or skip hire — £75–£450 depending on size
- A new outdoor socket by a Part P registered electrician — £85–£245
- UV clarifier — £100–£300
- Aquatic planting — £5–£50 per plant
- Feature boulders and specimen stone — £250–£556 per tonne
- Pond lighting — £20–£200 per unit
- Fish — £5–£50 each, and far more for graded koi
- A child-safety grid — from about £4.60 per square foot, roughly £50/m²
Can You Do It Yourself?
A wildlife pond is one of the best DIY jobs in the garden, and we'd rather say so. A materials budget for a 1×1.5×0.6m wildlife pond is £180–£380 all in, including a mains filter — around £60–£80 of underlay and liner, £20–£200 of sand and aggregate, £100 for the filter. Skip the filter and you're under £300. A weekend with a spade, a spirit level and a straight edge gets you a pond that will have frogs in it by spring.
A preformed shell is easier still — small shells start under £50 and goldfish or koi-sized shells run £130–£150, and installing one is digging a hole to match and backfilling with sand.
Where DIY Goes Wrong
Depth, level and filtration. A pond dug out of level shows the liner on one side forever. A pond under 0.6m deep cooks in summer and freezes solid in winter. A fish pond with an undersized filter turns green no matter what you pour into it — which is when people start buying £20–£50/litre algaecide instead of fixing the cause.
Filling a pond in is also genuinely DIYable if it's small and lined. Drain it, cut the liner out, backfill with clean subsoil, compact in 150mm layers, and top with 150mm of topsoil at about £85 a tonne. Concrete ponds are a different matter — breaking out reinforced concrete needs a breaker and a plan for the rubble.
How To Save Money On A Pond Or Water Feature
- Dig it yourself and pay for the skilled half. A small pond can come down to around £500 when you've already excavated, against roughly £3,000 for the same pond done start to finish.
- Choose a wildlife pond over a fish pond. No pump, no filter, no UV, no electrician, no running cost — and it's better for wildlife. That's £500–£2,000 of kit and cabling avoided.
- Put the feature pump on a timer. A £10 timer cuts a self-contained feature's running cost by around two-thirds.
- Reuse the spoil on site. A raised bed, a bank behind the pond or a levelled area saves the whole disposal line — £190–£450 of skip hire.
- Bundle the pond with other garden work. Sharing one digger delivery and one muck-away across a pond, a patio and levelling is far cheaper than three separate mobilisations — see our garden renovation cost guide for whole-garden packages.
- Buy a solar feature if you have no outdoor socket. At £145–£330 supply-only with zero running cost, it beats £85–£245 of electrical work plus cabling — provided the spot gets four to five hours of direct sun.
How To Hire A Good Pond Installer
Ask who's doing the electrics. Any mains pump connection is notifiable work in England and Wales, so the answer should be a Part P registered electrician with a certificate at the end — not "the landscaper will sort it".
Check for landscaping credentials: BALI or APL membership for build quality, and public liability insurance of at least £1m. For fish ponds, ask what filter they're specifying and why, and whether it's sized on pond volume or on stocking level — the second answer is the right one.
A proper quote states the pond's dimensions and depth, the liner type and thickness, whether spoil removal is included, the pump and filter models with wattages so you can work out the running cost, and what the edging detail is. Get the wattages in writing — run 24/7 at the current cap rate, a 150W pump is about £346 a year and a 40W pump on the same pond about £92.
Red flags: a fixed price given over the phone without seeing the access; no mention of underlay; a filter chosen on price rather than pond volume; and anyone happy to build you a fish pond at 0.5m deep.
Book Your Pond Or Water Feature Installation Today!
Whether it's a low-maintenance wildlife pond, a proper koi setup, or simply removing a pond that's become a safety worry, Fantastic Services can survey the site, sort the electrics and disposal, and build it properly the first time.
Frequently Asked Questions
How Much Does It Cost To Fill In A Garden Pond?
Expect £150–£400 for a small preformed pond, £400–£1,000 for a typical lined garden pond, and £1,000–£2,500 for a large or concrete one. The job is draining, cutting out the liner, backfilling in compacted layers and topping with topsoil at around £85 a tonne. Most jobs take one day; concrete and full garden restoration take two to five.
What Do I Do With The Fish When I Remove A Pond?
Rehome them before the job starts, and never release them into a wild pond, canal or river — it's an offence without an Environment Agency permit and it spreads disease. Ask local aquatic centres and koi dealers, who will often take healthy fish free, or post on a regional pond-keeping group. Good removal contractors will net and bag fish for you but won't find them a home.
How Much Does A Pond Pump Cost To Run?
At Ofgem's 26.32p/kWh cap rate from 1 October 2026, a 10W feature pump on 8 hours a day costs about £7.70 a year, a 45W feature about £35, a 90W pond pump running 24/7 about £207, and a 150W pump about £346. Wattage and hours are the whole equation — a timer is the cheapest saving available.
Do I Need Planning Permission For A Garden Pond?
For a normal domestic garden pond, no. Planning permission isn't usually needed for a pond within the curtilage of a house, though listed buildings, conservation areas and gardens with restrictive covenants are exceptions worth checking. Larger works may attract a permit cost of £50–£500. If you're diverting a watercourse or building anything over about 25,000 m³ you're in different territory entirely.
Is A Water Feature Cheaper Than A Pond?
Much cheaper. UK averages put a self-contained feature at £300 installed and a wall-mounted one at £400, against £900 for the smallest garden pond. There's no liner, no filtration and often no spoil. A solar unit at £145–£330 removes the electrical work too. You lose the wildlife value, which is the real trade-off.
How Deep Should A Garden Pond Be?
At least 0.6m for a decorative or wildlife pond, and 1–1.5m for koi. Depth protects fish from freezing in winter and from overheating and oxygen crash in summer, and it stabilises the water chemistry. Deeper means more spoil and more cost — every extra 100mm across a 4×3m pond is over a tonne of extra earth to move.
How Do I Make An Existing Pond Safe For Children?
RoSPA's three options are a rigid metal grille over the water, fencing at least 1.1m high with a locked gate, or filling the pond in — and it's clear that filling it is the option for genuine peace of mind, since children climb fences. Safety grids start from about £4.60 per square foot, roughly £50/m². Grilles need regular checking to confirm they're still secure.
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