Garden landscaping stages, costs and timings: what to expect
A full garden redesign typically runs through seven stages, from design and setting out to soft landscaping and handover, over 3 to 6 weeks on site. UK costs range from £6,000 to £30,000 excluding VAT. Most of the value sits in groundworks that are invisible once the paving goes down.
7
Stages
£6,000–£30,000
Typical UK cost
3 to 6 weeks on site
On-site duration
What are the stages of garden landscaping?
Garden landscaping typically break into 7 stages. Each stage has a share of the total budget and its own risks, and paying against each one as it completes, rather than upfront, protects both sides.
Stage 1: Design, survey and setting out
8% of budget · £500-£2,400 · 1 to 2 weeks, mostly off site
A measured survey records levels and services, a scaled plan is produced, and the design is set out on the ground with pegs and lines before anything is dug.
What goes wrong
What it costs
How you check
- What goes wrong
- Design and build is sold as a single price with no separate drawing deliverable.
- What it costs
- There is no document to hold anyone to, so every disagreement about shape, size, material or plant becomes one person’s memory against another’s. A typical unresolved scope dispute costs £1,000 to £5,000 and sours the whole job.
- How you check
- Get a scaled plan with dimensions and levels, a materials schedule naming products, and a planting schedule listing species, quantity and pot size, agreed before groundworks start.
- What goes wrong
- Levels are not surveyed on a sloping garden.
- What it costs
- Retaining structures, steps or extra excavation appear as variations mid-build, typically £2,000 to £10,000, and the design often has to change to absorb it.
- How you check
- Ask for a levels survey showing existing and proposed spot heights, with any retaining structure over 1 metre identified and priced up front.
- What goes wrong
- The access route into the garden is not assessed or agreed.
- What it costs
- Spoil and materials get carried through the house, adding 30 to 50% to labour plus £1,500 to £5,000 of interior damage to floors, walls and door frames.
- How you check
- Agree the access route in writing, with responsibility for protecting the interior and making good any damage named explicitly.
- What goes wrong
- A Tree Preservation Order, conservation area status or boundary ownership is not checked.
- What it costs
- Working on a protected tree is a criminal offence with fines typically in the thousands. A boundary error means rebuilding a wall or fence and a neighbour dispute that outlasts the project.
- How you check
- Get a council TPO and conservation area check, and check the title plan for boundary ownership, before setting out.
- What goes wrong
- Planning limits for fences over 2m, walls, decking over 300mm, or front garden paving over 5 square metres are not checked.
- What it costs
- Enforcement and removal, typically £1,000 to £4,000.
- How you check
- Check heights and materials shown on the plan against permitted development limits.
Stage 2: Clearance, excavation and disposal
12% of budget · £500-£3,500 · 3 to 7 days
Existing lawn, planting, paving and structures are removed, and the ground is excavated to formation level for the new hard landscaping.
What goes wrong
What it costs
How you check
- What goes wrong
- Spoil volume is underestimated in the quote.
- What it costs
- Disposal is charged by weight, and a 50 square metre excavation to 250mm produces roughly 20 tonnes. Overruns of £500 to £2,000 are routine and the most common early variation on a garden project.
- How you check
- Get spoil disposal named as included in the quote with a stated tonnage or number of grab loads, and a rate agreed for anything beyond it.
- What goes wrong
- Contaminated ground, buried rubble or asbestos is found under an old shed or garage base.
- What it costs
- Specialist survey and disposal costs £1,000 to £4,000 and stops work for 1 to 2 weeks. Asbestos cement sheeting under old outbuildings is common in gardens of any age.
- How you check
- Agree a provisional sum for ground contamination, and get a written instruction that work stops and the material is tested rather than buried on site.
- What goes wrong
- Buried services are cut during excavation, most often garden lighting, a water feed, or a supply to a garage.
- What it costs
- £500 to £3,000 to repair, plus a utility company charge if it is a mains service.
- How you check
- Get a CAT scan of the excavation area before digging, with any known service positions marked on the plan.
- What goes wrong
- Boundary fences, neighbouring planting or the house exterior are damaged during clearance.
- What it costs
- Replacement cost plus a dispute over who caused it, which is unwinnable without evidence.
- How you check
- Get a dated photographic schedule of condition covering every boundary, the house exterior and the access route, taken before the crew arrives.
Stage 3: Groundworks, sub-base and drainage
20% of budget · £1,000-£6,000 · 1 to 2 weeks
Falls, drainage and sub-base go in and get compacted in layers. This is the most important stage in the whole project and it is completely buried by the end of the next one.
What goes wrong
What it costs
How you check
- What goes wrong
- The sub-base is laid too thin, laid in one thick layer instead of compacted lifts, or built from unwashed rubble instead of proper graded stone.
- What it costs
- The paving sinks, rocks and opens at the joints within one to three seasons. Relaying a 30 square metre patio costs £3,000 to £5,000, and by the time it shows the landscaper is long gone. This is the single most common cause of landscaping failure in the UK, and it is invisible once the slabs are down.
- How you check
- Get dated photographs of the sub-base with a tape measure in shot showing depth, plus written confirmation of the material used and that it was compacted in layers. This is the highest-value photograph on the entire project.
- What goes wrong
- No falls are set, falls run toward the house, or paving finishes above the damp proof course.
- What it costs
- Standing water on the patio, and water held against the wall pushing damp inside. Internal damp remediation plus relaying the paving runs £2,000 to £6,000.
- How you check
- Get a level or laser reading showing fall away from the building at a minimum of 1:80, and confirm the finished paving level sits at least 150mm below the damp proof course.
- What goes wrong
- Surface water drainage is discharged into the foul system, or a soakaway is sited too close to the house.
- What it costs
- Water authority enforcement, or ground saturation against the foundations.
- How you check
- Get the drainage destination shown on the plan and agreed before excavation, not decided on site.
- What goes wrong
- More than 5 square metres of front garden is paved in non-permeable material with no drainage to a permeable area.
- What it costs
- A breach of permitted development, with retrospective drainage or resurfacing costing £1,000 to £4,000.
- How you check
- Check permeable material is specified, or a drainage destination is stated on the plan.
- What goes wrong
- Ducting for lighting and irrigation is not laid before paving.
- What it costs
- Cabling has to be routed around later or the paving lifted, costing £1,000 to £3,000 with visible surface routing.
- How you check
- Get all ducting photographed in place before the sub-base is closed, even if the lighting itself is a later phase.
Stage 4: Hard landscaping
30% of budget · £2,000-£9,000 · 1 to 3 weeks
Paving, steps, edging, retaining walls and decking are built, with slabs laid on a full mortar bed to the falls set in the previous stage.
What goes wrong
What it costs
How you check
- What goes wrong
- Slabs are laid on spot bedding rather than a full mortar bed.
- What it costs
- Hollow slabs ring underfoot, then crack under load. Porcelain in particular fails quickly. A full relay costs £3,000 to £6,000.
- How you check
- Get photographs showing full bed coverage as slabs go down. You can also tap slabs with a knuckle before pointing: a hollow sound means it is not fully bedded.
- What goes wrong
- Porcelain or dense stone is laid without a bonding primer on the back of the slab.
- What it costs
- The slab does not bond and lifts within 12 to 24 months, costing the same £3,000 to £6,000 to relay, and the landscaper will likely argue it was ground movement.
- How you check
- Get the primer product named in the specification and photographed in use during laying.
- What goes wrong
- A retaining wall is built without a drainage layer, weep holes, or reinforcement where the retained height exceeds 600mm.
- What it costs
- Hydrostatic pressure bulges then fails the wall. Rebuild costs £3,000 to £12,000, and a collapsing retaining wall on a boundary becomes a neighbour liability.
- How you check
- Get an engineer’s detail for anything retaining more than 1 metre, and photographs of the gravel drainage layer and weep holes before backfilling.
- What goes wrong
- Paving is substituted for a cheaper product, or supplied across mixed batches.
- What it costs
- Visible colour banding across the finished patio, with no repair possible, only replacement. Natural stone varies enough between batches that this shows badly.
- How you check
- Check delivery notes against the specified product, and get written confirmation that all stone is from a single batch, checked on delivery.
- What goes wrong
- Pointing is applied below the jointing compound’s minimum temperature, or in wet conditions.
- What it costs
- Joints crumble through the first winter. Re-pointing a patio costs £800 to £2,500.
- How you check
- Check the jointing product’s temperature range is named in the specification, and expect pointing to be deferred rather than forced in marginal conditions.
Stage 5: Boundaries, structures, lighting and irrigation
15% of budget · £1,000-£4,500 · 3 to 7 days
Fencing, screening and garden structures go in, and lighting and irrigation are connected into the ducting laid earlier and commissioned.
What goes wrong
What it costs
How you check
- What goes wrong
- A fence or wall is built over 2 metres, or over 1 metre where it adjoins a highway, without planning permission.
- What it costs
- An enforcement notice requiring it to be reduced or removed, typically £1,000 to £4,000.
- How you check
- Check heights against the limits at design stage and confirm them on the plan.
- What goes wrong
- Fence posts are set too shallow or not concreted.
- What it costs
- The fence fails in the first serious wind. A 1.8 metre fence needs a minimum 600mm post depth, and replacement runs £60 to £96 per linear metre.
- How you check
- Get post depth photographed before concreting.
- What goes wrong
- A fence line is built on the neighbour’s side of the boundary, or an existing boundary is replaced without establishing ownership.
- What it costs
- A neighbour can require removal, costing the whole fence plus a permanently poor relationship.
- How you check
- Check the title plan at the design stage, and notify the neighbour in writing before any shared boundary is touched.
- What goes wrong
- Mains-fed garden lighting or a socket is installed without proper electrical certification.
- What it costs
- An uncertified outdoor electrical circuit affects buildings insurance and gets flagged at sale. Retrospective inspection and certification costs £400 to £900.
- How you check
- Get a registered electrician’s installation certificate for anything mains-fed, with the scheme registration number checked on the official register. Low-voltage plug-in systems do not need this.
- What goes wrong
- Irrigation is commissioned without a pressure test, or with no isolation or drain-down provision.
- What it costs
- A burst line under new planting or paving, and frost damage in the first winter, costing £500 to £2,000.
- How you check
- Get a pressure test recorded, and ask to see the isolation valve and drain-down point demonstrated at handover.
Stage 6: Soft landscaping
12% of budget · £500-£3,500 · 3 to 7 days
Topsoil is imported and levelled, plants are set out to the planting schedule and planted, and turf is laid or seed sown.
What goes wrong
What it costs
How you check
- What goes wrong
- Turf or planting is laid onto subsoil, compacted formation, or buried construction rubble.
- What it costs
- Turf fails in the first dry spell and plants never establish. Relaying turf costs £1,000 to £2,500, and replanting a border is worse because of the lost growing season.
- How you check
- Get a stated topsoil depth in the specification, a minimum of 100mm under turf and 300 to 450mm in planting beds, photographed with a measure before anything is laid.
- What goes wrong
- Imported topsoil is of unknown origin.
- What it costs
- Weed and pest contamination. Japanese knotweed imported in topsoil costs £2,000 to £5,000 to treat and creates a disclosure obligation on sale that affects mortgageability.
- How you check
- Check topsoil is supplied to the recognised British Standard, with the delivery note retained.
- What goes wrong
- Plants are substituted, undersized, or supplied in smaller pot sizes than specified.
- What it costs
- The garden looks nothing like the design for three to five years, and it is hard to price or prove after the fact.
- How you check
- Check the planting schedule against what is actually delivered, on the day, before anything goes in the ground.
- What goes wrong
- Turf is laid in high summer with no agreement on watering.
- What it costs
- The turf dies within two weeks. This is the most genuinely ambiguous dispute in landscaping, since watering becomes the homeowner’s responsibility the moment the crew leaves.
- How you check
- Get a written aftercare schedule at laying, stating watering frequency and duration, with the handover point for that responsibility named explicitly. Where possible, defer turfing out of peak summer.
Stage 7: Snagging, handover and aftercare
3% of budget · £200-£900 · 2 to 4 days, plus a deferred wet-weather check
The site is cleaned and the snagging list closed, and aftercare documentation, warranties and guarantees are handed over before final payment.
What goes wrong
What it costs
How you check
- What goes wrong
- Sign-off is given in dry weather.
- What it costs
- Drainage and falls defects only reveal themselves in sustained rain. By the time the first heavy rain arrives, the final payment is gone and the leverage with it. Correcting falls means lifting and relaying paving at £3,000 to £5,000.
- How you check
- Hold the final stage until the garden has been through a period of real rain, and walk it wet. This is the single most valuable check on a landscaping project and it costs nothing.
- What goes wrong
- No written aftercare and watering schedule is handed over.
- What it costs
- The plant warranty becomes void the moment the landscaper can point to inadequate watering, which they almost always can.
- How you check
- Get a written aftercare schedule at handover, covering watering frequency and duration by season, mulching, and first-year pruning.
- What goes wrong
- The plant establishment warranty is verbal, or its exclusions are never stated.
- What it costs
- Nothing to fall back on when planting fails in year one, which is when most of it fails.
- How you check
- Get a 12-month plant replacement warranty and a 24-month workmanship warranty written into the contract, with the exclusions named in the contract rather than produced afterwards.
- What goes wrong
- Manufacturer guarantees for paving, decking, lighting and irrigation are not registered or handed over.
- What it costs
- Each is worth £500 to £3,000 in a later failure, and most require registration within a fixed window from installation.
- How you check
- Get a handover pack with every product guarantee registered in your name, plus the electrical certificate where mains work was done.
- What goes wrong
- Snagging is closed with items outstanding under end-of-job pressure.
- What it costs
- Residual snagging picked up by the homeowner typically runs £500 to £2,500.
- How you check
- Keep a dated, photographed snagging list closed item by item, each with a completion photograph.
How much does a garden landscaping project cost in the UK?
Typical UK costs range from £6,000 to £30,000. Full garden redesign, 50 to 100 square metres of worked area, mid spec, UK national average, excluding VAT. National average spend on a residential landscaping project is around £8,500.
The two largest stages by budget, hard landscaping and groundworks, sub-base and drainage, account for around 50% of the total between them.
| Typical UK range | £6,000-£30,000 |
|---|---|
| Per square metreMid-range full redesign, supply and fit, ex VAT. Below roughly 30 square metres the rate rises sharply because clearance, spoil disposal, machinery hire and mobilisation are close to fixed. Access is the largest hidden variable: a rear garden with no side access adds 30 to 50 per cent to the labour. | £150-£250/m² |
| Basic works (clearance, turf, simple borders) | £80-£120/m² |
| Premium (porcelain, structures, lighting, irrigation) | £250-£400/m² |
| Full garden redesign | £6,000-£30,000 |
| Full garden redesign, London and South East | £8,000-£40,000 |
- London and South East:
- +20-35%
- North East, Scotland, Wales and Northern Ireland:
- -10 to -20%
- Midlands:
- 0%
How long do garden landscaping take?
On-site work typically takes 3 to 6 weeks on site. Allowing for the delays most projects see, budget on 4 to 8 weeks allowing for weather, which affects landscaping more than most building work.
How should you pay a builder for a garden landscaping project?
Pay against each stage as it completes, not upfront. 5% of the total contract value is held from the final stage and released at practical completion once snagging is closed and the garden has been checked after a period of sustained rain, since drainage faults are invisible in dry weather. Because plant and workmanship failures typically surface months later rather than at handover, a 12-month plant replacement warranty and a 24-month workmanship warranty sit alongside the holdback rather than replacing it, with their exclusions, usually drought, frost, pest damage and failure to water, named in the contract.
With Renopay, the money for each stage is held securely and released once that stage is signed off, so the builder has proof of funds before starting and you only pay for work that is actually done.
- Sub-base
- The compacted crushed stone layer beneath any paving, path or driveway. It carries the load, not the slabs, and is typically laid 100 to 150mm deep for a patio and compacted in layers.
- Setting out
- Marking the agreed design onto the ground with pegs, string lines and levels before anything is dug, so the shape and sizes can be seen in place.
- Falls (crossfall)
- The deliberate slope built into paving so water runs away from the house rather than pooling. Minimum 1:80, always directed away from the building.
- Damp proof course clearance
- Paving must finish at least 150mm below the damp proof course of the house. Paving laid too high bridges the damp proof course and pushes damp into the wall.
- Muck away
- The removal and disposal of excavated soil and spoil. Charged by weight, and one of the most commonly underestimated lines in a landscaping quote.
- Geotextile membrane
- The fabric laid between the ground and the sub-base or gravel. It stops the two mixing and stops weeds coming through.
- Full mortar bed vs spot bedding
- A full bed supports the whole slab. Spot bedding, sometimes called five-dot or dabs, supports five points and leaves the slab hollow. Spot bedding is a defect, not a technique.
- Haunching
- The concrete support formed behind edging, kerbs and the perimeter of paving to stop it moving outward over time.
- Retaining wall
- Any wall holding back a change in ground level. Above 1 metre it needs engineered design and drainage behind it. Failure is progressive and expensive.
- Soakaway
- A stone-filled or crated pit that takes surface water into the ground. Must generally sit at least 5 metres from a building.
- Permeable paving
- Surfacing that lets water drain through rather than run off. Required for front gardens where more than 5 square metres is paved, unless water is directed to a permeable area.
- Topsoil vs subsoil
- Topsoil is the fertile upper layer plants grow in. Subsoil is the dead mineral layer beneath. Turf laid on subsoil or over buried rubble fails in the first dry spell.
- Planting schedule
- The list of every plant by species, quantity and pot size. Without it, substitutions and undersizing are invisible until years later.
- Establishment period
- The window, usually 12 months, during which newly planted stock is expected to take root. Distinct from snagging.
- Tree Preservation Order
- A council order protecting a specific tree. Working on a protected tree without consent is a criminal offence, and orders are not visible on site.
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