Each retaining wall project is priced specifically for your site but for basic estimation you can use the following costs per square meter (based on a 12m long X 1m high straight wall):
- steel uprights with treated pine sleepers (max 1m high) $470/square meter
- steel uprights with concrete sleepers (max 1m high) $650/square meter
- gabion walls (max 1m high) $800/square meter
- stacked volcanic rock $450/square meter
- engineered walls are individually priced.
- Excavation from $100/hr + GST
- removal of existing walls
- excavation
- removal/importing of soil
- connection to drainage
- poor access
- materials delivery
- building/planning permits if required.
- weather conditions
- location of services