What We Do

Subdivision Civil Works

Full estate civil packages. One contract.

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Single-stage to full estate civil packages, with pavement, kerb, drainage and final seal delivered under one contract. One point of contact, one timeline, one standard applied consistently across every lot from the first bulk earthworks cut through to the final asphalt seal.

Subdivision civil works requires coordination across multiple stages and multiple parties. Developers, certifiers, council, surveyors and utility providers all intersect at different points in the programme. Our team manages this coordination directly, reducing the risk of delays that come from gaps between subcontractors.

We have delivered subdivision packages ranging from small residential land releases to full multi-stage estates on the Central Coast. Our in-house capability covers every element of the civil scope, which means the quality standard does not change as the project moves from earthworks to kerb to pavement. The same package suits a developer at Maitland or in Hornsby Shire, and we quote subdivision civil works around Newcastle and Lake Macquarie on that basis too.

Full Estate Packages

We take on the complete civil scope from earthworks through to final asphalt seal, not just one trade.

Pavement Construction

Sub-base, basecourse and wearing course to council or developer specification.

Kerb and Drainage

All kerb types plus stormwater pits, channels and inter-allotment drainage.

Final Seal

Wearing course asphalt laid and compacted for final handover to council.

Developer Liaison

Direct communication with developers, certifiers and council at every stage.

Anatomy of a subdivision road

A new residential street is not just asphalt. It is seven layers of compacted, tested and inspected materials built inside a 10-metre road reserve before Council will accept it. Here is what each layer does.

Road reserve cross-section: 10 m total width showing footpath (1200 mm concrete slab), verge (500 mm), AS 2876 Type K kerb, and carriageway (6000 mm, two lanes) with 40 mm AC14 wearing course, 150 mm DGB20 base, 150 mm Class 3 crushed-rock subbase, and compacted subgrade. Carriageway 3% crossfall to kerb. SUBGRADE, CBR ≥ 5, proof-rolled, 95% MDD 10 000 mm ROAD RESERVE 1200 500 6000 mm carriageway 500 1200 FOOTPATH VERGE LANE 1 LANE 2 VERGE FOOTPATH 3% crossfall each side 40mm AC14 150mm DGB20 150mm Class 3 CR 100mm 150 All dimensions in millimetres. Compaction to RMS R44. DDA footpath crossfall ≤ 2.5% (AS 1428.1). Design traffic: A80.
  1. AC14 wearing course 40 mm

    14 mm dense-graded asphalt, Class 320 binder, after tack coat of C170 cutback at 0.3–0.5 L/m². Compacted to ≥ 98% Marshall density. ±5 mm under a 3 m straightedge. RMS 3204 / R116.

  2. Tack coat: C170 cutback bitumen

    Applied to the finished base before asphalt placement so the wearing course bonds rather than slides. No trafficking of unsealed base without this layer.

  3. DGB20 base course 150 mm

    20 mm dense-graded crushed rock, compacted in max 150 mm layers to 98% MDD. Surface trimmed to design crossfall, string-line checked at 5 m intervals. RMS R44 §3.3.

  4. Class 3 crushed-rock subbase 150 mm

    Drainage blanket and load-spreader under the base. Placed in 150 mm layers to 98% MDD. Extends to back of kerb footing. 200 mm where a bus route or heavy vehicle access applies.

  5. Subgrade: CBR ≥ 5, proof-rolled

    In-situ or imported material shaped to crossfall, compacted to 95% Standard Proctor MDD. Any pump or deflection under proof-rolling = over-excavate and replace. Field density testing before any pavement is placed.

  6. AS 2876 Type K barrier kerb 150 mm face

    25 MPa concrete. 150 mm face height, 300 mm base width, 150 mm integral dish channel. Expansion joints at 6 m max, contraction joints at 3 m. RMS R57 / AS 2876.

  7. Reinforced concrete footpath 100 mm × 1200 mm

    25 MPa min, SL52 mesh, 1200 mm clear width, 2.5% max crossfall (DDA). Tooled joints at 3 m, broom finish. Tactile ground surface indicators at all road crossings. AS 1428.1.

Ask them what base depth they priced.

Diagram shows typical construction sequence for standard site conditions on the NSW Central Coast. Actual scope, depths, and materials are determined on-site, as conditions vary by substrate, drainage, and access. Speak to our crew for an assessment specific to your project.

The Process

Every job follows the same standard. No steps skipped, no quality shortcuts.

Design Review

Review of civil design documents with developer, checking buildability and staging sequence.

Earthworks and Drainage

Bulk earthworks, sub-grade preparation and all stormwater drainage structures installed.

Kerb and Pavement Base

Kerb and gutter construction, pavement base course placed and compacted to specification.

Final Seal and Handover

Wearing course asphalt placed, line marking completed and handover documentation issued.

Frequently Asked

Questions specific to Subdivision Civil Works on the Central Coast.

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Getting other quotes too? Smart. Take our questions sheet (PDF).

Can you deliver the full civil scope under one contract?

Yes. We are set up to take on the complete civil scope from earthworks through to final seal. This includes all earthworks, kerb and gutter, stormwater drainage, pavement base, wearing course and line marking. One contract, one invoice, one point of accountability.

How do you manage staging across a multi-release subdivision?

We work to a staging plan agreed with the developer at the outset. Each stage is programmed to align with land release and title requirements. We maintain a single point of contact throughout and provide progress reporting at agreed intervals.

Do you handle council bonding and as-built requirements?

Yes. We prepare and provide as-built survey data, compaction test records and other documentation required to satisfy council bonding and release conditions. We coordinate with your certifier to ensure requirements are met at each stage.

Why civil packages come unstuck
  • Multiple subcontractors with no single point of accountability
  • Earthworks by one crew, pavement by another, so finished levels never align
  • Programme built by the developer, not the people actually doing the work
  • Council approval conditions not tracked through to practical completion
  • Certifier cannot sign off because the documentation package is incomplete
  • Nobody available to address defects once the final invoice is paid

Settlement, ponding water, council notices. Three contractors, none responsible.

There's a better way. How BWB is different  →
4.6 stars from 19 Google reviews A real person answers.

Glenn and his team were terrific. Such a difficult job made to look easy.

Garry Parnell

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Subdivision Civil Works

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