Ultra Level retaining wall — large concrete sleeper installation, Adelaide
Adelaide · est. 2011

Built for the walls others walk away from.

Tight access, sloped blocks, hydrostatic pressure, neighbours on the boundary. We do the retaining walls and earthworks most builders quote out of — engineered to a commercial standard so they're still standing in fifty years.

15YRS
Building retaining walls across Adelaide
9
Person crew & subcontractor network — fully insured
50+
Posts installed per day — 5–6× residential pace
100YR
Commercial-grade engineering standard, every job
02 / Work

Selected projects from the last twelve months.

Adelaide Hills, eastern suburbs, inner-city. Sleeper, concrete, block, sandstone — engineered for the site, not picked from a catalogue.

Large engineered sleeper retaining wall, Adelaide Hills
Adelaide HillsEngineered sleeper · 60m
Tiered retaining wall with crane access, Adelaide
Eastern suburbsTiered · crane access
Retaining wall with bulk excavation, Adelaide
BurnsideBulk earthworks
Concrete sleeper wall on sloped block, Adelaide
StirlingSloped block
Boundary retaining wall, tight access, Adelaide
NorwoodBoundary · tight access
Long commercial-grade retaining wall, Adelaide
Commercial & councilParklands · roadway · playspace
03 / Capability

Three things most residential builders won't touch.

Adelaide is full of blocks that quote out at "too hard". This is what we built the business around.

Tight access retaining wall job, narrow side passage, Adelaide
01 — Capability

Tight, awkward access

Boundary fences, sloped driveways, side passages a metre wide. We bring crane, conveyor, mini-excavators and hand-labour where the machinery can't reach. If it can be solved, we'll solve it.

CAD-rendered engineered retaining wall design with strip footings
02 — Capability

Engineered solutions

Hydrostatic pressure, retaining over 1.2m, walls under load. CAD-rendered designs, custom strip footings, certified engineering — not eyeballed off a YouTube tutorial. You get plans, you get certificates, the wall lasts.

Commercial-grade retaining wall install, large crew, Adelaide
03 — Capability

Commercial-grade install

Most residential crews prop and clamp ten posts a day. We slot 50–60 by hand straight into wet concrete — same method we use on council parklands and playspaces. Faster, straighter, and cheaper to do it properly the first time.

04 / Process

Quote in 48 hours. CAD design before you commit a cent.

Four steps from your first message to a wall in the ground. No hidden numbers, no scope creep, no chasing us for updates.

Site visit
Step 01 — Enquiry

Enquire & site visit

Tell us the block. Josh comes out within a week, eyes the access, takes measurements, hears what you actually want.

Engineering design and quote stage
Step 02 — Design

CAD design & quote

3D render, engineering options, transparent line-item pricing. Base wall cost separated from access & complexity premiums — so you can see what you're paying for.

Build crew on site
Step 03 — Build

Build & document

Locked-in start date. Daily progress photos. Site kept clean every night — we treat your home like our own. Most jobs land in 1–3 weeks.

Finished retaining wall handover
Step 04 — Handover

Sign-off & warranty

Engineering certificates, photo handover, written workmanship warranty. Owner walks the site with you — not a project manager you've never met.

05 / Founder

Owner-run. Same person on the quote and on the tools.

Josh — owner, Ultra Level

"We treat people's jobs and homes as if they were our own. You're invading someone's privacy for two weeks of their life — there every day, early till night. So we leave the site cleaner than we found it, every single evening."

06 / Reviews

What Adelaide homeowners say after the wall is up.

4.9 ★★★★★ Verified Google Reviews
★★★★★

Four other companies looked at our block and said it was too hard — sloped, fence on the boundary, no access for a bobcat. Josh walked it, said "yeah we can do this", and three weeks later the wall was up. Hand-built every post. Quality is unreal.

Mark T. Stirling
★★★★★

We had a crane involved, bulk earthworks, and a neighbour-from-hell on the boundary. Josh handled all of it including the conversations next door. Daily updates with photos. Site spotless every night. Worth every dollar — just call him first.

Sarah & Ben H. Burnside
★★★★★

Spent $50k+ with these guys on a difficult retaining job behind the house. Got a CAD render before we paid anything, transparent pricing, no scope blowout. Crew turn up in uniform, work fast, leave nothing behind. Wouldn't use anyone else now.

David K. Norwood
07 / Enquire

Tell us about the block. Josh replies within a business day.

Suburb, rough scope, a photo if you have one — that's enough to get a ballpark and a site-visit booked.

No call-centre. No "consultant". Josh reads every enquiry himself and gets back to you the same business day.

  • Free site visit & ballpark within a week
  • CAD render & engineering before you commit
  • Transparent line-item quotes — no surprises
  • Sweet spot $20k–$70k (we can quote bigger)
Or call now 0411 843 541
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Call Josh · 0411 843 541