Hold the Ground
Level out a sloping garden, stop soil movement, and create usable outdoor space that stays put.
What Goes Wrong
The failure mode is almost always the same: the wrong material, no drainage, or foundations that cannot carry the load.
Clay soil holds water behind the wall, building pressure that pushes masonry outward and causes cracking or bulging.
Weep holes at the base and a free-draining gravel backfill layer release water pressure before it moves the wall.
A wall built on topsoil or compacted earth alone will shift with ground movement, especially on clay-heavy Peterborough plots.
A concrete strip footing sized to the wall height and soil load gives a stable base that resists seasonal ground movement.
Timber sleepers used above 1 metre without adequate post depth, or lightweight blockwork on a tall bank, both fail under sustained soil load.
Concrete blockwork for taller structural walls, brick or stone for lower decorative walls, sleepers for informal terracing up to around 1 metre.
Walls over 2 metres, or over 1 metre next to an adopted road, need planning permission, starting without checking can mean removal.
The survey confirms whether permitted development applies before any quote is issued, so work starts on the right footing.
Scope of Work
From a single raised bed to a fully terraced sloping garden, the scope below covers what our partners quote and build.
Suited to taller retaining walls where structural load is the priority; built on a concrete strip footing with drainage included.
Lower decorative walls and front garden boundaries; finished appearance with mortar joints and a concrete footing below ground.
Informal terracing and raised beds up to around 1 metre; timber posts set in concrete anchor each sleeper course.
Ground clearance, level setting, and concrete strip or pad foundations sized to the wall height and soil conditions.
Gravel backfill layer and weep holes at the base of the wall to release water pressure and prevent cracking or movement.
Multi-level terracing for sloping gardens; raised planting beds built to hold soil load and drain freely.
Level and slope check before material or foundation type is chosen.
Permitted development limits confirmed at survey stage.
Gravel backfill compacted in layers behind the finished wall.
Steel reinforcement added where wall height or load demands it.
Why Choose Us
Structural garden walls need the right groundwork from the start. Here is what our partners bring to every job.
Ground conditions, slope, and wall height are assessed on site before a figure is given.
Foundations, drainage, and wall construction are each listed as separate line items.
Permitted development limits are checked at survey stage, not after work has started.
Partners familiar with Peterborough’s clay-heavy soil and its effect on drainage and foundations.
If excavation reveals unexpected ground conditions, you are told before the cost changes.
The Process
01
Tell us about the slope, the soil, and what you want the wall to achieve so we can match the right partner.
02
A local landscaper visits to assess levels, drainage, and planning thresholds, then returns an itemised quote.
03
Excavation, foundations, wall construction, weep holes, and compacted backfill are completed in sequence.
Pricing Estimates
| Job | Typical cost |
|---|---|
| Small garden wall | £800-£2,000 |
| Retaining wall section | £2,000-£5,000 |
| Larger retaining wall | £5,000-£15,000 |
Describe the slope, the soil, and how you want to use the space. We’ll arrange a local landscaper to survey the ground and return a clear, itemised quote covering foundations, drainage, and the wall itself.