Timber Retaining Walls
Timber does most of the work in the Hutt Valley. A pole and rail wall goes up in a few days, costs less per metre than anything else, and holds a 1.2m step in level.
See more
Maungaraki, Wellington region
Retaining Walls in Maungaraki
Top Retaining Walls Lower Hutt builds retaining walls throughout Maungaraki, on the western hills looking back across the valley. This is hill country work. Sections climb hard off the road, the ground is weathered greywacke, and the Wellington Fault runs along the base of these hills.
- Timber, block, gabion, stone and engineered walls
- Full drainage behind every wall we build
- Consents lodged through Hutt City Council
- Drainage on every wall300mm of metal, a drain coil and geotextile. Never an optional extra.
- H5 poles as standardThe right treatment for timber that lives in wet ground.
- Consents handledHutt City, Upper Hutt and Wellington, start to finish.
- Itemised quotesYou see what the drainage and the spoil actually cost.
Weathered greywacke is not the rock underneath it
The basement rock under the western hills is hard greywacke. What you dig into on a Maungaraki section is its weathered mantle, a yellow clay rich material that Wellington gardeners know far too well.
It holds a cut face well when it is dry and behaves quite differently once it takes on water, which it does readily in a Wellington winter. So the drainage system behind the wall is carrying more of the job here than it would down on the free draining valley gravel.
| Council for consents | Hutt City Council |
|---|---|
| Typical ground | Weathered greywacke clay on a steep western slope |
| Walls we build most here | Tiered timber and engineered block |
| Consent threshold | 1.5m of retained ground, or any surcharge above the wall |
| Drainage | 300mm metal, perforated coil, geotextile, on every wall |
| Site visit | Free, with a written quote to follow |
Sloping ground means consent more often than not
People assume the exemption is about height. On a Maungaraki section it usually is not. Ground sloping up behind a wall imposes load on it, and that surcharge takes the job outside the Schedule 1 exemption whatever the wall measures.
Combined with the heights these sections actually need, most jobs here end up consented through Hutt City Council. We tell you at the first visit and organise the engineer if it is needed.
Tiering turns dead slope into usable ground
Two 1.2m walls with a planted terrace between them usually cost less overall than one engineered 2.4m wall, and they give you flat ground instead of bank. On a wide Maungaraki section there is often room to do it.
The terraces also slow surface water on the way down the slope, which matters here more than it does on the flat. It only works where the separation is genuine, and we measure that rather than assume it.
Not sure whether your wall needs a consent? Send us a photo and a rough height. Under 1.5m of retained ground with nothing loading it from above is exempt. A driveway, a building, a pool or fill sloping up behind it is a surcharge, and that changes the answer.
Common questions
Retaining walls in Maungaraki: common questions
Does a Maungaraki wall need consent?
Usually. Sloping ground above the wall is a surcharge, which takes it outside the exemption regardless of height. We check on site and tell you before you commit to anything.
Why does weathered greywacke matter?
Because it behaves like clay, not rock. Strong when dry, much weaker wet, and slow to drain. It changes both the footing design and how hard the drainage has to work.
Wall types
Retaining walls we build in Maungaraki
Concrete and Block Retaining Walls
Concrete goes in wherever something heavy sits above the wall, and in a city built beside an active fault it is also what engineers reach for first. We build.
See more
Engineered Retaining Walls
Past 1.5m, or once a driveway or building sits above it, the job changes completely. You need a chartered engineer, a building consent from Hutt City Council and.
See more
Stone and Gabion Retaining Walls
Stone suits the Hutt hills, where a hard manufactured face can look wrong against bush and rock. The whole region is founded on greywacke, so local quarries put out.
See moreNeed a retaining wall in Maungaraki?
Answer three quick questions or call [PHONE] and we will book a free site visit.