A retaining wall holds sloping ground, stops erosion and turns a slope into usable garden. A1 designs and builds retaining walls that last, with proper drainage and a fixed on-site quote.
Retaining Walls
Retaining wall builders in Sydney
4.9 on Google
15+ years
Fully insured
Fixed on-site quote
Retaining wall contractors who build to last
A retaining wall has one job: hold the ground behind it, for decades. That comes down to the right footing, the right materials and, above all, drainage behind the wall so water pressure does not push it over.
As Sydney retaining wall contractors, we build to those fundamentals. Whether you need to level a sloping backyard, create a garden terrace or stop soil washing away, we design and build a wall that stays put. As retaining wall specialists and installers, we take on new retaining wall construction and rebuilds across Sydney.
What our retaining wall service covers
Every wall is built through the same solid process.
Site and levels assessment
Wall design and material selection
Drainage and ag-line behind the wall
Footings and structural build
Backfill, compaction and clean up
Retaining walls we build
We build in the material that suits your site, look and budget.
Timber sleeper walls
Treated timber sleeper walls, a cost-effective option for garden beds and low retaining.
Concrete sleeper walls
Concrete sleepers in steel posts for a stronger, longer-lasting finish.
Besser and block walls
Reinforced block walls for higher loads and a clean, rendered finish.
Sandstone and stone
Natural sandstone and stone walls for a premium, characterful look.

How we build your wall
1
Site visit and assessment
We check the slope, soil and levels and talk through options.
2
Fixed on-site quote
You get a clear scope and price before we start.
3
Excavate and footings
We dig and set the footings the wall needs.
4
Build and drainage
We build the wall and install drainage behind it.
5
Backfill and clean
We backfill, compact and leave the site tidy.
Repairs and rebuilds
Old walls lean, bulge and crack, usually because the drainage failed or the footing was never right. We assess failing retaining walls across Sydney and rebuild them properly so the problem does not come back. If your wall is moving, get it looked at before it fails.
Related services
These often go hand in hand with the job. We can bring them into the one plan and quote.
Serving gardens across Sydney
We build and repair retaining walls for homes and businesses across Sydney, including the inner west, eastern suburbs, north, south, greater west and The Hills. Check the suburbs we cover or ask when you get in touch.
What Sydney customers say
Retaining wall questions we hear a lot
It depends on the length, height, material and access, plus the amount of excavation and drainage. We give you a fixed price after a free on-site visit.
It depends on the height and location. Lower walls often do not need approval, but taller walls can. We will let you know what your job is likely to need.
Timber sleepers suit lower garden walls, concrete sleepers and block are stronger for higher loads, and sandstone looks premium. We match the material to the job.
Water building up behind a wall is the main reason walls fail. We install drainage behind every wall so that pressure has somewhere to go.
Yes. We assess leaning or failing walls and rebuild them properly, fixing the drainage or footing issue that caused the problem.
We can normally commence within two weeks of quote acceptance, pending weather.
Get a fixed on-site quote
Free, no obligation. Usually answered same day.
Why homeowners pick A1
Rated 4.9 on Google
15+ years landscaping Sydney
Public liability insured
Fixed quotes, no surprises
Clean, tidy worksite
Need to hold a slope or add usable space?
Book a free on-site visit and get a fixed quote for your Sydney retaining wall.
