Garden SurveyorSloping Site Calculator
Cut/fill, retaining guidance and stepped levels.
Inputs
5 advanced inputs hidden. Switch to Advanced to fine-tune.
Confidencehigh· 85Complexitymedium· 30
- Area
- 15m²
- Perimeter m
- 16m
- Cut / fill volume
- 4.5m³
- Retaining recommended?
- Yes
- Stepped levels
- 2
Heads-up: Gentle slopes (under 1:20) can be absorbed in the build-up. Steeper than that and you're either excavating into the bank or building up — both have cost implications. Why it matters: Retaining walls over 1 m bring Building Regs into play — see the retaining-wall calc.
This app provides general UK guidance and material estimates only. It is not legal, planning, engineering or building-control advice. Always confirm requirements with your local planning authority, building control, utility providers, manufacturers or qualified professionals.