Flex MSE creates low-impact vehicle access way for new hillside home.
The Goal:
Nestled within a native bush setting on Kohi Point Lookout Road, this residential project set out to create a natural, low-impact vehicle accessway for a new hillside home in Whakatāne. With the 1,078m² site positioned between numbers 18 and 20, the design required cutting a driveway through steep, densely vegetated terrain. A key goal was to ensure the resulting earthworks were stabilised in a way that respected the site’s ecological context and aesthetic values. Our client, Michelle, sought a solution that blended seamlessly into the surrounding environment while providing long-term structural performance.
The Challenge:
Forming the driveway access involved excavating into a narrow and sloped section, resulting in steep earth banks of up to 1.9 metres in height and approximately 20 metres in length on either side. The site’s natural contours, irregular shape, and sensitive vegetation presented several challenges:
- Visual impact: Traditional concrete or timber retaining structures would have clashed with the bush setting.
- Ecological sensitivity: Maintaining the integrity of the surrounding native vegetation was a priority.
- Structural requirements: The solution needed to meet engineering and council standards while adapting to variable ground conditions and a curved driveway alignment.
- Access constraints: The tight site and surrounding trees required a lightweight, low-impact construction method.
The Solution:
To address both engineering and environmental requirements, the project team selected the Flex MSE Vegetated Wall System, supplied by Advance Landscape Systems and installed by Top-Notch Contracting. Designed to follow the natural flow of the driveway, the vegetated wall was built with a curved alignment that softened the visual impact and allowed for direct planting into its geotextile face.
To ensure structural integrity on the variable terrain, ACEGrid GG40 geogrid reinforcement was installed at every third course, providing long-term stability in accordance with the structural design by EDC (Whakatāne).
Key features of the Flex MSE wall included:
- Wall height ranging from 0.6 to 1.9 metres.
- ~20 metres of vegetated wall constructed on each side of the driveway.
- Curved wall alignment to reflect the site’s natural geometry.
- ACEGrid GG40 geogrid used for internal stability and engineered performance.
- Direct planting capability, allowing vegetation to establish quickly across the wall face.
Why Flex MSE was chosen for this project
The Flex MSE system offered the ideal balance between engineering performance, aesthetic sensitivity, and environmental stewardship, making it the perfect solution for this tight, sloping residential site.
Key benefits included:
- Natural Aesthetic: The vegetated finish allowed the retaining structure to blend into the surrounding bush, supporting the client’s vision of a soft landscape entrance.
- Design Flexibility: Able to accommodate the site’s irregular shape and curved driveway, the system followed the terrain without the need for straight or rigid lines.
- Ecological Integration: With direct planting into the wall, the structure has visually disappeared over time, contributing to local biodiversity and bush regeneration.
- Low Impact Construction: The lightweight, modular system was ideal for the limited access site, reducing disturbance to surrounding vegetation.
- Engineered Assurance: Reinforcement with ACEGrid GG40 and collaboration with EDC ensured the wall met Whakatāne District Council’s structural and consent requirements.
Vegetation Strategy
The planting design, developed by Changing Spaces with support from Advance Landscape Systems, focused on native species suited to the site’s microclimate and visual character:
- Rengarenga Lily (Arthropodium cirratum): Selected for its lush, hardy foliage and fast coverage, forming a consistent green base layer.
- Maidenhair Ferns (Adiantum spp.): Interspersed for contrast and texture, contributing to the natural feel and seasonal variation.
Together, these species established a dense vegetated cover, reinforcing the “living wall” effect from day one.
Learn more about Flex MSE Vegetated Wall System
Contact Our Team
Interested in specifying Flex MSE® on your next project?
Contact our team for technical documentation, design support and project consultation.
We’re here to help you deliver retaining solutions that protect, nurture and sustain.










