Stone Retaining Walls

Why choose a stone retaining wall?

Natural stone has been used for centuries to hold back earth, terrace slopes and frame gardens. In modern Kiwi builds it still delivers unrivalled durability, low maintenance and organic aesthetic appeal. From basalt and schist to locally quarried greywacke, each stone tells a unique geological story while boosting property value.

Main construction methods

1. Dry-stack

Stones are carefully interlocked without mortar, creating flexible walls ideal for small to medium heights.

2. Mortared

Mortar bonds the stones, producing a thinner profile capable of higher loads and crisp architectural lines.

3. Stone veneer over block

Concrete blocks provide structural strength while a natural stone skin gives the desired look-great when space is tight.

4. Gabion cages

Wire baskets filled with rock offer a contemporary, permeable alternative. View options under our gabion baskets category.

Cost guide for New Zealand projects

• Dry-stacked stone: $450–$700 per m² installed
• Mortared stone: $550–$900 per m² installed
• Stone veneer on block: $350–$600 per m² (excluding blockwork)
• Gabion stone walls: $300–$500 per m²

Prices vary by stone type, wall height, site access and engineering requirements. Obtain detailed quotes from our listed suppliers.

Key buying considerations

• Engineering & consent: In NZ, any retaining wall over 1.5 m high (or supporting additional load) typically requires building consent and may need a chartered professional engineer’s design. Check the latest guidance from MBIE Building Performance.
• Drainage: Effective sub-surface drainage prevents hydrostatic pressure. Weep holes, scoria backfill and geotextile fabric are common solutions.
• Foundations: Adequate footing depth (usually below frost line) ensures long-term stability, especially on slopes.
• Stone sourcing: Locally quarried stone lowers transport costs and blends with natural surroundings.
• Finishing touches: Add a retaining wall cap stone for a polished top edge and to protect mortar joints.

Installation options

You can DIY a small, low dry-stack wall with the right tools and patience, but taller structures or builds on a slope are best left to professional landscapers and stonemasons. Browse rated experts on ArchiPro for complete design-and-build services.

Maintenance tips

• Inspect annually for movement or loose stones.
• Remove invasive plant roots that can pry joints apart.
• Repoint mortar every 10–15 years if required.
• Ensure drainage outlets remain clear.

Explore related retaining wall materials

If stone isn’t the perfect fit, compare timber retaining walls, concrete options and steel systems to find the right balance of cost, appearance and lifespan.

Next steps

Ready to turn plans into reality? Browse the full landscaping range, shortlist suppliers, and request quotes directly through ArchiPro-simple, fast and obligation-free.