A semi-rural residential area of two lots (approx. 4.3ha) in Greater Sydney developed into 84 residential lots. Works included bulk earthworks, road construction, civil works and services, and liaising with Liverpool City Council on development consent conditions.
Orion’s responsibilities fell into three key areas:
- Project Management: Initial council engagement. Preparing and lodging Development Application (DA) and Subdivision Works Certificate (SWC) documentation.
- Design Expertise: Preparing civil engineering plans and designing supportive documentation for the DA and Subdivision Works. This included but wasn’t limited to, detailed road, lot, drainage, basin design and Tuflow analysis.
- Construction Oversight: Superintendence of Civil and Services Coordination works and overseeing SWC applications.
Amid Orion’s meticulous planning, the Liverpool City Council released a new Development Control Plan after the Subdivision Works Certificate package submission, necessitating critical adjustments that brought forth a host of challenges, including:
- Raingardens positioned at the intersection and reduced verge width posed difficulties in delivering services.
- A flat, flood-prone area impacted storm water drainage.
- Remediation of an unsuitable fill area became essential before use.
- Design management of street tree pits was new to the Liverpool Council.
- Subdivision and reconstruction of Kelly Street required working around existing services and poor-quality material.
Adapting to new road widths, Orion integrated parking bays and bioretention street trees and worked around the intersection-based raingardens.
Liverpool City Council required a model for bioretention street trees and run-off strategies. Orion initially proposed parking bay dish crossings to provide an inlet into the tree pits. The client requested Orion prepare options to minimise risk of approval delays and minimise an increase in construction costs. In response Orion proposed a gutter-at-kerb to kerb-and-toe transition where tree pits capture run-off, was approved by the Council and adopted as their preferred method before later developing their own.
Orion restructured services according to the project’s pivots. Electrical services now followed the footpath alignment, water services splayed into the road carriageway, and the sewer that was running under the bioretention underwent concrete reinforcement. We integrated a drainage blanket into Kelly Street’s frontage pavement and led co-ordination of the project geotechnical consultant and civil contractor to optimise earthworks ensuring ground conditions were suitable for the roads and construction of future dwellings.
Orion’s extensive experience working with the Liverpool City Council proved enormous value to the client. Having extensive knowledge and experience in the area, including council’s specific requirements and standards, the project benefited from streamlined communication and enhanced design consistency, with all relevant development information being readily accessible. All equating to an enhanced client experience.
Project Management, Design, Construction
9 Kelly Street
Orion was engaged by the client to oversee the subdivision development of two lots in a Greater Sydney semi-rural residential area into 84 lots. Despite initial progress, challenges arose when the local council issued a new Development Control Plan (DCP) after Orion submitted the Subdivision Works Certificate (SWC). The team used critical thinking and creative problem-solving to overcome those hurdles successfully.
![9 Kelly Street](https://cdn.prod.website-files.com/635eef6670804555eb547830/65f3a51fc8bbb2b8b80c4292_9-kelly-st-orion-projects-6.png)