Retaining Wall Contractor
Auckland
Timber, concrete block and engineered retaining walls for residential, commercial and development projects across Auckland.
Discuss Your ProjectRetaining Wall Services
We Deliver
- Timber retaining walls
- Segmental or concrete block retaining walls
- Reinforced concrete retaining walls
- Gabion walls where suitable
- Excavation and foundation preparation
- Retaining-wall drainage
- Geotextile and drainage aggregate
- Subsoil drainage
- Backfill and compaction
- Engineered retaining-wall construction
- Replacement of existing retaining walls
- Associated earthworks and reinstatement
Retaining Wall Construction for Auckland Sites
Retaining walls across Auckland for residential, commercial and development sites: timber, concrete block and engineered concrete systems, with excavation, drainage and backfill. Our scope includes timber, concrete block and engineered concrete retaining solutions, together with excavation, drainage, backfill and associated earthworks.
Before pricing, we review the wall location, retained height, site access, ground conditions, drainage requirements, surcharge loading and any available engineering or consent information. Our retaining wall cost guide explains the main pricing factors.
Retaining Walls for Auckland Sites
Retaining walls are commonly required where a site needs a change in level, a building platform, driveway support, boundary retention or replacement of an existing wall. The appropriate wall type and construction method depend on retained height, ground conditions, surcharge loading, available space, drainage and access. Where engineering is required, we construct to the approved design and coordinate the relevant inspection stages.
Retaining Wall Drainage
Water pressure behind a retaining wall can materially affect wall performance, so drainage is considered as part of the construction detail. Depending on the wall design and site conditions, this may include free-draining aggregate, geotextile, subsoil drainage, weepholes or another specified drainage system. We install the drainage components shown on the engineering drawings or agreed construction detail and connect them to the nominated outlet where one is provided.
Types of Retaining Walls We Build
Timber Retaining Walls
Timber retaining walls are commonly used for residential, landscaping and development applications where the wall geometry, loading and site conditions suit a pole-and-lagging system. Pole size, embedment, spacing, timber treatment, drainage and backfill requirements depend on the wall design and site conditions. Where engineering is required, we construct the wall to the approved drawings and inspection requirements.
Concrete Block Retaining Walls
Concrete masonry and segmental block systems can be used where the site, retained height and design requirements suit this type of wall. The system may include reinforced masonry, segmental retaining blocks or geogrid reinforcement depending on the approved design. We construct to the nominated wall system and coordinate foundations, drainage, reinforcement, backfill and inspections where required.
Reinforced Concrete Retaining Walls
Reinforced concrete retaining walls are typically used where the engineering design requires a structural concrete solution, including sites with higher loads, constrained footprints or specific architectural requirements. We construct to the approved engineering drawings, including excavation, foundations, reinforcement, formwork, concrete placement, drainage and backfill within our agreed scope.
Consents & Engineering
Whether a retaining wall needs a building consent depends on the retained height, surcharge loading, location and site conditions.
Building work for a retaining wall is generally exempt from building consent if it retains no more than 1.5 metres depth of ground and does not support any surcharge, which includes any extra load such as vehicles. If the wall supports any surcharge, the exemption does not apply and a building consent is required. Walls near boundaries or overland flow paths can trigger resource consent or engineering requirements.
Where engineering or building consent is required, we work with the project engineer, build to the approved design and coordinate our construction around the required inspection stages. Design, engineering certification and Council approvals remain with the engineer and Council. If the consent position is unclear, it should be confirmed with the project engineer or Auckland Council before construction begins.
What's Included
- Site preparation and excavation
- Set-out to the approved alignment
- Post holes, footings or foundations
- Wall construction to the approved detail
- Drainage aggregate and geotextile where specified
- Subsoil drainage where specified
- Backfill and compaction
- Coordination of required inspections
- Site reinstatement
- Supporting construction records where required
Auckland Retaining Wall Coverage
Retaining walls across Auckland. Send the wall height and site address and we will confirm whether we can take it on.
Who We Work With
On Retaining Walls
Homeowners
Retaining walls for residential sites, including replacement walls, garden and boundary retention, driveway support and level changes. Where engineering or consent is required, we work to the approved documentation and inspection requirements.
Developers
Retaining walls for subdivisions and multi-unit developments, coordinated with earthworks, drainage, levels and the wider civil programme. Construction records and inspection information can be provided where required by the project.
Contractors
Construction to engineer-issued drawings, with coordination of excavation, drainage, concrete, backfill and inspection stages. Bromley Group is Tōtika prequalified for commercial and civil work.
How We
Work
Enquiry & Project Review
Send through the project address, scope, required timing and any drawings or photos available. We'll review the information, confirm whether the work fits our capability and availability, and advise the next step.
Site Review & Pricing
Where a site visit is required, we review access, levels, ground conditions, existing services and the relevant drawings or consent requirements. Our quote sets out the agreed scope, assumptions and exclusions so it is clear what has been priced.
Planning & Delivery
Once the work is confirmed, we agree the programme, site requirements and any interfaces with other trades. We keep you informed as the work progresses and raise any changes to the agreed scope early so the cost and programme implications can be addressed before additional work proceeds.
Project
Gallery
Frequently asked questions
It depends on retained height and loading. Building work for a retaining wall is generally exempt from building consent if it retains no more than 1.5 metres depth of ground and does not support any surcharge, which includes any extra load such as vehicles. If the wall supports any surcharge, the exemption does not apply and a building consent is required. If the requirements are unclear, they should be confirmed with Auckland Council or the project engineer before construction starts.
Wall type, retained height, length, access, ground conditions, drainage and engineering all affect the price. Excavation, spoil removal and reinstatement also need to be allowed for. Send through the approximate dimensions, site address, photos and any drawings for review. Our retaining wall cost guide explains the main items to check when comparing quotes.
The appropriate wall system depends on retained height, ground conditions, surcharge loading, available space, access, drainage, appearance and budget. Timber, segmental block and reinforced concrete systems each suit different situations. Where an engineer is involved, the final wall type and construction detail should follow the approved design.
Service life depends on timber treatment, detailing, drainage, ground conditions, exposure and construction quality. We use the treatment grades and member sizes required by the project design and applicable durability requirements rather than applying one standard detail to every wall.
Yes, where drainage forms part of the wall design or construction detail. Depending on the wall system, this may include free-draining aggregate, geotextile, subsoil pipe, weepholes or another nominated drainage method. The outlet also needs to be considered as part of the overall drainage arrangement.
Yes. We undertake retaining-wall work on sloping and restricted-access sites. Access, plant requirements, spoil removal and material handling are reviewed during the site assessment because these can materially affect the construction method and price.
Yes, but the boundary position and proposed wall alignment should be confirmed before construction. Depending on the site, survey information, neighbouring property considerations, surcharge loading and consent requirements may need to be addressed before work begins.
Often, yes, but the additional wind and structural loads need to be considered in the wall design. Where a fence forms part of the retaining-wall scope, it should be identified before engineering and construction so the required posts, connections and loading can be allowed for.
Our recent work
Timber Retaining Wall Installation
Auckland
Treated timber retaining wall construction including excavation, post installation, drainage, backfill and reinstatement.
Multi-Lot Residential Subdivision: Auckland's Northwest
Auckland, New Zealand
Principal civil works for a multi-lot residential subdivision, including construction of timber retaining walls and a culvert crossing.