Retaining walls in Kenthurst, built to last.

Sandstone block retaining walls in Kenthurst typically run between $300 and $600 per lineal metre depending on wall height, access to the site, soil conditions, and whether A Grade or B Grade sandstone blocks are used. Madden Earthworks provides free on-site quotes and fixed-price written quotes with no hidden costs. Your quote covers excavation, roadbase footings, sandstone blocks and delivery, aggregate drainage, socked agg lines to stormwater, geofabric, block grabs, demo saw cutting, and a pressure wash on completion. Call Jesse on 0432 085 976 for a free Kenthurst retaining wall quote.

Standard 2-metre sandstone retaining wall blocks used in Kenthurst measure approximately 2000mm long by 400mm high by 400mm deep, and weigh around 1.4 tonnes per block. Both A Grade and B Grade share the same dimensions and weight — only the face finish and colour variation differs. Because the blocks are so heavy, every Kenthurst sandstone wall is built using a purpose-made block grab attached to our 5 t Takeuchi or 5.5 t Kobelco excavator.

The sandstone blocks Madden Earthworks installs in Kenthurst are sourced from local New South Wales sandstone quarries, cut to 2-metre standard blocks, graded A or B on face finish, and delivered directly to your Kenthurst site. Because the stone is locally quarried, the colour and texture match the natural Hawkesbury sandstone already sitting under most Kenthurst blocks — your wall ends up looking like it grew out of the ground.

Yes. Madden Earthworks is a Hawkesbury-based retaining wall specialist and Kenthurst is a regular service area, an easy run from our East Kurrajong base. Call 0432 085 976 or fill out the quote form on this page and Jesse will organise a free site visit in Kenthurst within 24 hours.

Madden Earthworks specialises in sandstone block retaining walls for Kenthurst's acreage properties, using 2-metre A Grade and B Grade sandstone blocks, including tiered and stepped walls for sloping blocks around sheds, car parks and driveways. We also build concrete sleeper retaining walls with H-posts for longer spans or tighter budgets. Every wall we build in Kenthurst includes proper drainage — aggregate backfill, socked agg lines to stormwater, geofabric, and engineered roadbase footings.

A sandstone block retaining wall built correctly in Kenthurst with proper drainage lasts 50+ years. Unlike timber sleepers (10-20 years) or concrete sleepers (20-30 years), sandstone doesn't degrade. The key is drainage: every Madden wall in Kenthurst includes socked agg line plumbed to stormwater, aggregate backfill, and geofabric, which eliminates the hydrostatic pressure that would otherwise push a wall out of line.

Yes, and it's one of the reasons sandstone suits Kenthurst's acreage properties. Natural sandstone deepens in colour, shaded faces grow moss and lichen over time, and the wall settles into the landscape alongside sheds, driveways and horse paddocks. A sandstone wall in Kenthurst looks more at home at year 20 than at year 1 — the opposite of render blocks or concrete sleepers, which look their best on day one.

Yes. Jesse Madden (owner-operator) personally visits every Kenthurst site to assess the job, identify drainage or access risks, and provide a fixed-price written quote at no charge. No obligation. Your quote typically includes all materials (sandstone blocks, roadbase, aggregate, agg lines, geofabric), delivery, excavation, block grabs, demo saw, operators, and clean-up. Call 0432 085 976 or submit the form on this page.

Yes. Madden Earthworks Pty Ltd (ABN 86 683 469 712) carries $20 million public liability insurance, is White Card certified, WHS compliant, DBYD (Dial Before You Dig) registered, and fully ABN registered. Certificates of currency are available on request.

Most sandstone block retaining walls in Kenthurst are completed within 2 to 5 days depending on length, height, access, and site conditions. Larger acreage jobs that combine a site cut, car park prep and a tiered wall — like a recent three-week Kenthurst job — take longer. Madden Earthworks typically schedules Kenthurst jobs within 1 to 3 weeks of quote acceptance and a clear start date is locked in so you know exactly when work begins. Urgent jobs can often be accommodated — call Jesse on 0432 085 976.

The number-one reason retaining walls fail in Kenthurst is poor drainage. Kenthurst's sloping blocks sit on clay over Hawkesbury sandstone, and that clay holds water, swells, and generates hydrostatic pressure that pushes walls forward until they lean or collapse. The second reason is inadequate footings — dirt-only bases settle unevenly on sloping ground. Every Madden sandstone wall in Kenthurst uses compacted roadbase footings, a socked agg line to stormwater, aggregate backfill, and geofabric so these failure modes are eliminated from day one.

A Madden Earthworks retaining wall quote for Kenthurst is fully inclusive: excavation and site prep, roadbase footings, 2-metre sandstone blocks (A Grade or B Grade), block deliveries, aggregate drainage behind the wall, socked agg lines plumbed to stormwater, geofabric, excavator and operator, sandstone block grabs, demo saw for block cuts, skilled labourers, pressure wash on completion, and removal of all rubbish from site. No hidden extras.