09 · siteworks trades # Retaining wall builders in Auckland ## Summary **Retaining wall builders** (Siteworks trades). Timber, concrete, block and engineered retaining walls. A retaining wall over 1.5 m, or carrying a surcharge such as a driveway or building, generally needs building consent and engineer design. Check the engineer on the CPEng register. No listings yet: free listings are open. ## What retaining wall builders do Retaining wall builders construct walls that hold soil on sloping or excavated sites, in timber, block, concrete or engineered systems. **You usually need them for:** A sloping section, a new driveway or terrace, or a failing wall. ## Where they fit in a new build or renovation Typical project stages where this trade is on site: 1. **Site prep and earthworks** 2. **Outdoors and landscaping** Usually needed for: [decks & outdoor](/projects/decks-outdoor/), [townhouses & developments](/projects/townhouses-developments/). Stages are indicative. Your builder or project manager sets the real sequence. ## Check before you hire A retaining wall over 1.5 m, or carrying a surcharge such as a driveway or building, generally needs building consent and engineer design. Check the engineer on the CPEng register. ### Official links * [Registration Authority: Find a Registered Engineer (CPEng)](https://www.registrationauthority.org.nz/find-a-registered-engineer) ### Questions to ask * Is an engineer designing the wall, and will you build to that design? * How is drainage handled behind the wall? * Is building consent needed? Checked against the official sites on 3 Nov 2026. General information only, not legal advice. ## Retaining wall builders in Auckland ### We're adding retaining wall builders soon — are you one? Get a free listing: it takes a couple of minutes, and homeowners comparing retaining wall builders in Auckland will find you here. [Get a free listing](/for-trades/?trade=retaining-walls#claim) No retaining wall builders listings yet, so this page is hidden from search engines until the first listing goes live. ## Frequently asked questions What do retaining wall builders do? Retaining wall builders construct walls that hold soil on sloping or excavated sites, in timber, block, concrete or engineered systems. When do I need a retaining wall builder? A sloping section, a new driveway or terrace, or a failing wall. How do I check a retaining wall builder? A retaining wall over 1.5 m, or carrying a surcharge such as a driveway or building, generally needs building consent and engineer design. Check the engineer on the CPEng register. What should I ask a retaining wall builder before hiring? 1. Is an engineer designing the wall, and will you build to that design? 2. How is drainage handled behind the wall? 3. Is building consent needed? When does a retaining wall need consent? Generally when it is higher than 1.5 m or supports additional load such as a driveway or building. Always check with Auckland Council and get an engineer to design larger walls. ## Related trades * [Earthmovers, excavation and site prep](/trades/earthmovers/) * [Drainlayers](/trades/drainlayers/) * [Concrete and foundation contractors](/trades/concrete-foundations/) * [Paving and driveways](/trades/paving-driveways/) * [Fencing contractors](/trades/fencing/) * [Decks and pergolas](/trades/decks-pergolas/) * [Landscapers and landscape designers](/trades/landscapers/) * [Pool builders](/trades/pool-builders/) [All trades](/trades/) · [Trades by project type](/projects/)