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A new pool is a big project, and it helps to know what’s coming
Most people who call us have pictured the finished pool for years. The sunny afternoons. The kids jumping in. The quiet morning swim before work. What they often haven’t pictured is the bit in between, when the garden becomes a building site for a while.
That’s completely normal. Very few homeowners have been through a pool build before, so the process can feel like a mystery. This guide explains how to build a swimming pool in plain English, from the first chat to the day you dip your toes in.
We’ll focus on one-piece pools, because that’s what we install. A one-piece pool arrives as a single finished shell, made off site. That takes a lot of the guesswork and weather worry out of the build.
Why it pays to understand the process
When you know what each stage involves, you can plan around it. You’ll know when to warn the neighbours, when to book the patio layer, and when the garden will be at its messiest. You’ll also feel more confident asking questions, which is exactly what we want you to do.
How to build a swimming pool starts long before anyone picks up a spade
The most important work happens at the kitchen table, not in the garden. Getting the early decisions right saves time, stress and changes later on.
It begins with a proper conversation
We like to start by listening. How do you picture using the pool? Is it for fitness, family fun, relaxing, or a bit of everything? Who will swim, and how often? Do you want to use it all year or mainly in summer?
Your answers shape everything that follows, from the size and shape to the heating and cover.
A site survey tells us what the garden can handle
Next comes a visit to your home. We’ll look at the space, the levels, the ground and the access. Here are some of the things we check:
- How a crane or delivery vehicle can reach the pool position
- Whether the ground slopes and how much levelling it needs
- Where existing drains, cables and pipes run
- How close the pool would be to the house, boundaries, trees and buildings
- Where the equipment can sit, and how power will reach it
- How the pool will catch the sun through the day
Access is often the thing people haven’t thought about. A one-piece shell is lifted into place, so we need a clear route for the lifting equipment. Don’t worry if your garden looks tricky. There’s often a way, and we’ll talk you through the options.
Planning and building regulations need checking early
Many garden pools don’t need planning permission, but it depends on your property and where you live. Listed buildings, conservation areas, pools close to boundaries, and any buildings or enclosures around the pool can all change the picture. Our guide to swimming pool planning permission goes into more detail.
Our advice is simple. Check with your local council before you commit, and speak to building control about any related work such as electrics or an enclosure. We’re happy to help you work out what questions to ask.
Choosing the pool itself shapes every step that follows
Once we understand the garden and how you’ll use the pool, we can help you choose the right one. This is the fun part.
The type of pool you pick is one of the biggest decisions in how to build a swimming pool. A one-piece shell is made in a controlled setting away from your home. That means a consistent finish, and far less time with an open hole in the garden waiting for good weather.
Size and depth come first
A bigger pool isn’t always a better one. Think about the space you want to keep for lawn, seating and play. Think too about how you’ll swim. Lengths need a longer pool, while family play suits a shallower, roomier shape. Our guide on how big your pool should be is a good place to start.
Features are easier to plan now than add later
It’s worth deciding on the extras at this stage, because they affect pipework, power and groundwork. Things to think about include:
- Heating, so you can enjoy warm water for more of the year
- A cover, to keep heat in, debris out and help with safety
- Underwater lighting, for evening swims and a lovely view from the house
- Steps and seating areas built into the shell
- Where the equipment will be housed and how quiet it needs to be
If you’d like to see what’s possible, you can explore our full range of pools before we meet.
Here is how to build a swimming pool, one stage at a time
Every garden is different, so every build has its own rhythm. But most one-piece pool installations follow the same broad path. Here’s what to expect.
1. Final drawings and a clear plan
Before work starts, you’ll see the agreed layout, the pool position, the levels and where the equipment will go. This is your chance to ask questions and make any last changes. Once everyone is happy, we book in the dates.
2. Preparing the site
The work area is marked out and protected. Paths may be laid for machinery, and fences or borders may need to come down for access. We’ll agree all of this with you in advance, so there are no surprises on day one.
3. Excavation
This is when it starts to feel real. The hole is dug to the right size and depth, with allowance for the base and the backfill around the shell. The soil has to go somewhere, so we’ll plan whether it leaves the site or stays for landscaping.
UK soil varies a lot. Clay, chalk, sand and high water tables all need slightly different handling, and the survey helps us plan for this.
4. Laying a firm, level base
A pool is only as good as what it sits on. A solid, level, well-compacted base is laid at the bottom of the excavation. This spreads the weight of the pool and the water evenly and helps it stay stable for many years.
5. Lifting the pool into place
This is the day everyone remembers. The one-piece shell is delivered and lifted into the hole, usually by crane. It’s carefully lowered, checked and levelled. Many families gather to watch, and it’s a great moment for photos.
6. Plumbing, backfilling and filling
With the shell in position, the pipework is connected for the skimmers, return jets, lights and any extras. The pool is then filled with water while the gap around the outside is backfilled at the same time. Doing both together keeps the pressure balanced on the shell walls.
7. Fitting the equipment
The pump, filter, heating and controls are installed and wired in. A qualified electrician handles the electrical work, and it should be signed off in line with building regulations. The equipment is usually housed close to the pool in a discreet spot.
8. Building the surround
Once the pool is secure, the surround goes in. This might be stone paving, porcelain, timber decking or a mix. The edge detail matters, because it’s what you’ll see and touch every day. If you’re having a cover fitted, it’s usually coordinated with this stage.
9. Clearing up and a final check
Machinery leaves, spare soil is taken away or reused, and the site is tidied. We walk around the finished pool with you, check every detail and note anything that needs a final tweak.
The finishing touches make it feel like part of your garden
A pool on its own can look a little stark. The landscaping around it turns it into a place you want to spend time.
Planting and screening
Soft planting around the edges helps the pool sit naturally in the garden. Hedging and screens add privacy and shelter from the wind. It’s worth choosing plants that don’t drop lots of leaves or blossom straight into the water.
Somewhere to sit and relax
Think about where the sun falls in the afternoon and evening. That’s usually the best spot for loungers or a dining area. A little shade nearby is always welcome on hot days.
Lighting the space
Underwater lights look beautiful at night. Garden lighting around paths and steps makes the area safer and more inviting after dark.
Knowing how to build a swimming pool well means planning for life after handover
The build doesn’t end when the last paving slab goes down. The final stages set you up for years of easy swimming.
Commissioning and balancing the water
Once the pool is full, the equipment is started up and tested. The water is balanced so it’s clear, comfortable and safe to swim in. This can take a few days, so please be patient if the pool isn’t swim-ready the moment the builders leave.
If chemicals are involved at any stage, a few rules always apply:
- Follow the product label every time
- Wear gloves and eye protection
- Never mix chemicals together
- Add chemicals to water, never water to chemicals
- Keep swimmers out until the water is balanced
- Store products safely away from children and pets
A proper handover
Plenty of guides explain how to build a swimming pool, but far fewer talk about what it’s like to own one. That’s the part that lasts, so it deserves as much care as the build itself.
We’ll show you how everything works. That includes the controls, the filter, the heating and the cover. We’ll explain a simple routine for keeping the water in good shape, and you’ll know exactly who to call if something doesn’t seem right. For a clearer idea of the numbers, our guide to swimming pool cost explains what affects the price.
Aftercare and servicing
A well-installed pool is a pleasure to own, but it still needs looking after. Regular servicing keeps the equipment running smoothly and catches small issues before they grow. We offer aftercare, servicing and repairs, so you’re never on your own. Heating choices make a real difference here too, and our guide to swimming pool heating explains the main options.
Pool building questions we get asked a lot
How long does a pool build take?
It depends on the garden, the access, the ground and the weather. A one-piece pool is usually quicker on site than a pool built in place, and we’ll give you a realistic timeline at the survey stage.
Will my garden be completely dug up?
There will be some disruption, especially around the pool area and the access route. We plan the work to keep the mess contained, and landscaping afterwards brings everything back together.
Do I need planning permission?
Often not, but it depends on your property and location. Always check with your local council before you start, particularly if you live in a conservation area or a listed building.
How much does it cost to build a pool?
Every project is different, so we don’t work from a price list. After the survey, we’ll give you a tailored quote based on your garden, your chosen pool and the features you want.
Can a pool go in a small or sloping garden?
Often, yes. Sloping gardens may need extra groundwork or retaining walls, and smaller spaces suit compact designs. We’ll tell you honestly what’s possible after we’ve seen the site.
When is the best time of year to build?
Many people aim to be swimming by summer, so spring and early summer book up quickly. Starting the conversation in autumn or winter gives you the most choice of dates.
Ready to talk about how to build a swimming pool in your garden?
Now you know what the process looks like, the next step is simply a conversation. We’ll come and see your garden, listen to what you want and help you picture the finished pool. There’s no pressure and no obligation, just honest advice from a friendly Surrey team.
Call us on 01483 323 676 or email hello@hilifepools.co.uk for a friendly, no-pressure chat, or get in touch online and we’ll come back to you.
