The short answer
Whether artificial grass is cheaper than a real lawn over time depends mainly on how you would otherwise maintain the natural lawn. Artificial grass has a high upfront cost — commonly £40 to £80 per square metre fitted — but very low running costs, with no mowing, feeding, watering or seeding. A real lawn is cheap to lay but carries ongoing costs in time, fuel or electricity for mowing, water, feed and the occasional repair. Over a typical artificial-grass lifespan of around 10 to 20 years, the saved maintenance can offset the upfront outlay, especially if you value your own time or pay for lawn care. If you mow yourself and spend little on the natural lawn, the real lawn usually stays cheaper.
The fair comparison is not just the day-one price but the total cost over the years you keep the lawn. Each option front-loads or spreads its cost differently.
Artificial vs real lawn cost
- Artificial upfront~£40–£80 per m2 fitted
- Artificial running costVery low (brushing, occasional rinse)
- Real lawn upfrontLow (seed or turf)
- Real lawn running costMowing, water, feed, repair over time
- Artificial lifespan~10–20 years before replacement
How the two cost profiles differ
Artificial and natural lawns sit at opposite ends of the cost timeline. Artificial grass is expensive to install and cheap to run; a real lawn is cheap to establish and carries a steady running cost. Comparing them fairly means looking at the whole period you expect to keep the surface.
A natural lawn's ongoing costs are easy to overlook because many are paid in time rather than cash — but mowing every week or two through the growing season, watering in dry spells, feeding, scarifying and patching bare patches all add up over a decade. Artificial grass removes nearly all of that, leaving occasional brushing and the odd rinse.
| Cost element | Artificial grass | Real lawn |
|---|---|---|
| Upfront / installation | High (~£40–£80 per m2 fitted) | Low (seed cheaper than turf) |
| Mowing | None | Regular through growing season |
| Watering | Occasional rinse only | Needed in dry spells |
| Feed / weed / moss treatment | None | Periodic |
| Repairs / reseeding | Rare | Patching and reseeding over time |
| Replacement | ~Every 10–20 years | Renovation rather than full replacement |
Indicative comparison for guidance only. Real-lawn running costs depend heavily on how intensively it is maintained and whether you do the work yourself.
When artificial grass works out cheaper
Artificial grass is more likely to pay back over time in these situations:
- You pay for lawn care: if a gardener mows and maintains your lawn, those recurring fees can be substantial over ten or more years, and removing them offsets the upfront cost.
- You value your own time: the hours spent mowing, edging and feeding have a real worth; artificial grass buys that time back.
- The lawn is hard to grow: shaded, heavily used or boggy areas where real grass struggles cost money in repeated reseeding and repair that an artificial surface avoids.
- You keep it for the long term: the longer you stay, the more years of saved maintenance you accrue against the one-off installation cost.
When a real lawn stays cheaper
A natural lawn often remains the cheaper option in these cases:
- You do your own maintenance cheaply: if you already own a mower and spend little on feed or water, the running cost is modest and the low upfront cost is hard to beat.
- You may move soon: a high upfront spend has less time to pay back if you are not staying long, though it can still add appeal at sale.
- Replacement is factored in: artificial grass does not last forever. At the end of its life — often 10 to 20 years — it has to be lifted and replaced, which is a second major cost. A real lawn is renovated rather than wholesale replaced.
- You want low environmental impact: a natural lawn supports wildlife and is repairable; artificial grass is a plastic product that eventually needs disposal, which is a non-cash cost worth weighing.
In short, artificial grass trades a large one-off cost for near-zero running costs, while a real lawn spreads its cost across the years. Which is cheaper over time comes down to how you would otherwise look after the natural lawn and how long you plan to keep it.
Working out your own lifetime comparison
Because the answer is so personal, the most useful exercise is to estimate the total cost of each option over the period you expect to keep the lawn, rather than relying on a generic figure. A practical way to do this:
- Set a time horizon: decide how long you realistically expect to keep the garden as it is — for many households this is ten years or more. The longer the horizon, the more the running costs of a real lawn add up.
- Cost the artificial option: take the fitted installation cost, then add a modest allowance for occasional sand top-ups and the eventual replacement at the end of its life (cheaper than the first install if the base is reused).
- Cost the real lawn honestly: include the cash you would spend on mowing fuel or electricity, feed, weed and moss treatments, water in dry spells, and any reseeding — and, if you pay a gardener, their fees. If you value your own time, put a figure on the hours spent each year.
- Compare the totals: the option with the lower total over your chosen period is the cheaper one for you.
This approach shows why the verdict swings so widely between households. Someone who pays a gardener to maintain a struggling, shaded lawn may find artificial grass clearly cheaper over a decade. Someone who enjoys mowing their own easy-to-grow lawn with a mower they already own will usually find the real lawn stays cheaper, because its cash running cost is small and the artificial option's upfront outlay never gets the chance to pay back. Neither answer is wrong — they reflect genuinely different circumstances.
Frequently asked questions
How long before artificial grass pays for itself?
There is no fixed break-even point. It depends on what you would otherwise spend maintaining a real lawn. Households that pay for regular lawn care or struggle to grow grass tend to recover the cost faster, while those who mow cheaply themselves may never see a clear saving over the grass's lifespan.
Does artificial grass need replacing, and what does that cost?
Yes. Artificial grass typically lasts around 10 to 20 years before the pile flattens or fades and it needs replacing. Replacement means lifting the old grass and laying new, though a sound existing sub-base can often be reused, which reduces the cost compared with the original installation.
Is the running cost of a real lawn really that high?
Much of it is time rather than cash — regular mowing, edging, feeding and watering through the growing season. The cash cost (petrol or electricity, feed, water, occasional seed) is usually modest if you do the work yourself, but it rises sharply if you pay a gardener or the lawn needs frequent repair.
Sources & further reading
- Royal Horticultural Society — lawn care
- Which? — artificial grass advice
- Checkatrade — artificial grass cost guide
Figures on this page are typical UK ranges drawn from published cost guides and are intended as guidance, not a quotation.