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Transforming Sydney's Inner West and surrounding suburbs outdoor spaces with quality landscaping for over 10 years.

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    Inner West Sydney

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Natural sandstone retaining wall creating terraced garden levels in a sloped Sydney backyard
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Retaining Walls Sydney

Solve sloping site challenges with professionally built retaining walls. From timber sleepers to sandstone blocks, we construct walls with proper drainage and structural integrity—creating level, usable spaces that add value to your Sydney property.

Structural Expertise
Proper Drainage
Multiple Materials
Built to Last
Call 0410 421 351
5 · 73 Google Reviews
24hr Quote Response

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Established

Est. 2015

Licensed

Lic: 457664C

Coverage

Fully Insured

Rating

5.0 ★ Reviews

Quotes

Free Quotes

Professionally constructed timber sleeper retaining wall with integrated garden beds
Overview

Sydney Retaining Wall Specialists

Retaining walls do more than hold back soil—they create level spaces, define garden areas, and add architectural interest to your landscape. Our retaining walls are built with proper drainage and structural integrity to ensure decades of reliable service.

Whether you need a simple garden terrace or a significant engineering solution, we design and construct retaining walls that solve your site challenges while enhancing your property's appearance and value.

  • Structural engineering expertise
  • Proper drainage design and installation
  • Timber, stone, and concrete options
  • Engineer coordination when required
  • Correct footings and construction
  • Built to last decades
Get a Free Quote
What We Offer

Retaining Wall Services

Multiple material options with proper engineering and drainage

Timber Sleeper Walls

Hardwood and treated pine sleeper walls for a natural, rustic appearance. Ideal for garden terracing and moderate height applications. Cost-effective and visually warm.

Sandstone Block Walls

Classic Sydney sandstone blocks for heritage-style retaining walls. Natural beauty that complements period homes and traditional gardens. Extremely durable when properly installed.

Concrete Block Walls

Structural concrete blocks for maximum strength and height capability. Can be rendered, painted, or left natural. Excellent for significant level changes.

Gabion Walls

Stone-filled wire cages for a contemporary industrial aesthetic. Excellent drainage, flexible on movement, and visually distinctive. Great for modern landscapes.

Garden Terracing

Multi-level retaining walls that create usable terraces on sloping sites. Transform unusable slopes into functional garden beds and outdoor living areas.

Wall Replacement

Remove failing retaining walls and construct proper replacements. We address the underlying causes of failure and build a wall that lasts.

How It Works

Our Retaining Wall Process

From site assessment to solid construction—walls built to last

1

Site Assessment & Design

We assess soil conditions, slope gradient, drainage patterns, and wall height requirements. We discuss material options and design a wall solution suited to your site and aesthetic preferences.

2

Engineering (If Required)

Walls over 600mm typically require engineer certification. We coordinate with structural engineers for designs and certifications, ensuring your wall meets NSW regulations.

3

Quality Construction

Proper excavation, footing installation, and wall construction with integrated drainage. We use correct setbacks, aggi pipe, and backfill techniques for structural integrity.

4

Backfill & Finishing

Drainage aggregate, filter fabric, and quality backfill ensure water doesn't build up behind the wall. Final grading and landscaping complete the installation.

Why Choose Us

Why Choose Outdoor Blitz for Retaining Walls

Structural expertise and proper drainage for walls that don't fail

Structural Understanding

Retaining walls must resist significant soil pressure. We understand the engineering principles and construction techniques needed for walls that don't lean, crack, or fail over time.

Proper Drainage Design

Water behind retaining walls is the primary cause of failure. We install aggi pipe, drainage aggregate, and weep holes to ensure water drains effectively and doesn't undermine your wall.

Material Versatility

We build with timber sleepers, sandstone blocks, concrete blocks, gabion baskets, and crib walling. We recommend the best option for your site conditions, aesthetic, and budget.

Engineer Coordination

For walls requiring engineering, we work with structural engineers to obtain designs and certifications. We handle the coordination, making the approval process straightforward for you.

Correct Construction Methods

Proper footings, setbacks, and construction techniques are essential. We don't cut corners that compromise structural integrity—your wall is built to engineering specifications.

Aesthetic Integration

Retaining walls are functional but can also be beautiful. We design walls that complement your landscape, creating terraces and garden features that add value and visual interest.

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Our Work

Our Retaining Walls Portfolio

View our completed retaining walls projects across Sydney

Ashfield Vegetable Planter Box
Landscape ConstructionPlanter Boxes+4

Ashfield Vegetable Planter Box

Ashfield, Sydney

Custom-built raised vegetable planter box with built-in irrigation system and premium soil mix for urban gardening enthusiasts.

View Project
Longueville Pet-Friendly Artificial Turf
Artificial TurfingLandscape Construction+3

Longueville Pet-Friendly Artificial Turf

Longueville, Sydney

Pet-friendly artificial turf installation with antimicrobial infill, proper drainage, and reinforced edging for active households with pets.

View Project
Pemulwuy Front Yard Transformation
TurfingLandscape Construction+4

Pemulwuy Front Yard Transformation

Pemulwuy, Sydney

This comprehensive front yard transformation in Pemulwuy took a newly built home from construction site to stunning streetscape. The project features premium Sir Walter buffalo turf, sleek charcoal Colorbond fencing with a timber retaining wall base, timber garden edging, thoughtfully designed garden beds with new plantings, a practical side access pathway with pebbles and stepping stones, and a contemporary letterbox.

View Project
Glebe Heritage Courtyard Planters
Planter BoxesLandscape Gardening+3

Glebe Heritage Courtyard Planters

Glebe, Sydney

We transformed a cluttered Glebe courtyard into a refined heritage-inspired garden. The upgrade features curved recycled brick planter boxes, a custom timber privacy screen, refreshed planting with drip irrigation, tidied paving, and defined garden edges that soften the existing brick courtyard.

View Project
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What Our Clients Say

Client Testimonials

Hear what our customers have to say about our professional landscaping services across Sydney's Inner West

Excellent work on our retaining wall and garden beds. Sam designed a solution that not only solved our drainage issues but also looks beautiful. The planter boxes he installed are perfect for our herbs and vegetables.

Michael Thompson

Sam installed a new retaining wall and concreted our side passage. He also added some lovely stepping stones through the garden. Great attention to detail and very reasonably priced.

Karen O'Brien

Outdoor Blitz transformed our unusable sloped backyard with retaining walls and terraced garden beds. Sam's expertise in handling the challenging terrain was impressive. Now we have a beautiful usable outdoor space.

Andrew Taylor

We engaged Sam for a complete landscape design and construction project. He created beautiful terraced gardens with retaining walls, installed irrigation, and planted a stunning native garden.

Helen Wong

Excellent work on our retaining wall project. Sam also created beautiful garden beds and installed fresh turf. The quality is outstanding and the price was very fair.

Paul Henderson

We had our entire backyard transformed - new lawn, concrete patio area, garden beds with edging and a small retaining wall. Sam managed everything professionally from start to finish.

Lucy Patterson

Read More Reviews
Related Articles

Retaining Walls Tips & Insights

Expert advice and inspiration for your retaining walls project

Landscaping Costs in Sydney's Inner West: 2025 Practical Price Guide
Cost GuideOutdoor Makeovers+2

Landscaping Costs in Sydney's Inner West: 2025 Practical Price Guide

Planning a garden transformation in Sydney's Inner West? This practical 2025 guide provides specific pricing for turfing, retaining walls, decking, concreting and garden features. Learn how Outdoor Blitz delivers straightforward, high-quality landscaping solutions that maximise your outdoor space without unnecessary complexity or costs.

Read Article
The Role of Hardscaping in Inner West Landscape Design: Creating Structure and Function
HardscapingLandscape Construction+1

The Role of Hardscaping in Inner West Landscape Design: Creating Structure and Function

Discover how hardscaping elements like retaining walls, pathways, patios, and structural features form the essential framework of successful garden designs in Sydney's Inner West. Learn to balance hardscape and softscape for a harmonious, functional outdoor space.

Read Article
10 Innovative Landscaping Ideas to Transform Your Inner West Garden
Garden InnovationDesign Inspiration+1

10 Innovative Landscaping Ideas to Transform Your Inner West Garden

Elevate your Inner West garden with these ten creative landscaping solutions. From multi-level designs to integrated water features, living walls, outdoor rooms, edible landscapes, and smart technology integration, discover fresh approaches to urban garden design.

Read Article
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FAQs

Retaining Wall FAQs

Common questions about retaining wall construction in Sydney

Service Areas

Retaining Walls Service Areas

Professional retaining walls services across Sydney's Inner West and surrounding suburbs

Balmain
Rozelle
Leichhardt
Annandale
Newtown
Marrickville
Haberfield
Ashfield
Five Dock
Drummoyne
Strathfield
Burwood
Birchgrove
Lilyfield
Glebe
Forest Lodge
Camperdown
Enmore
View All Locations

Can't find your suburb? Contact us – we service additional areas across Sydney and may be able to help with your project.

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Need a Retaining Wall Solution?

Create level, usable space on your sloping site. Contact us for a site assessment and detailed quote.

Request Free QuoteCall 0410 421 351
Licensed & Insured
5-Star Rated
10+ Years Experience