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We work with you to design approval ready stormwater & civil engineering solutions.
Who we help?
Supporting architects, town planners, developers, and homeowners with expert designs that meet compliance and streamline approvals.
Architects, Town Planners, and Developers – Expert Design collaboration to ensure a smooth development application, construction certificate and occupation certificate approval process.
Builders & Contractors – Seamless and cost-efficient integration of approved stormwater and civil solutions.
Homeowners – Help you comply with Council stormwater and Approved Consent Conditions to get you building faster.
Stormwater & Civil Engineering Services
We offer civil engineering services for pre-DA consultation, feasibility assessments, development applications, construction and occupational certificates for residential, commercial, industrial and rural developments, including alterations and additions, new residences, multi-unit and subdivisions.
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What we deliver:
Stormwater Management Plans – Approval ready drainage designs tailored to your site.
What we do:
Design, Detailing and Computational Analysis of:
On-Site Detention (OSD) systems
On-Site Retention (OSR) systems
Integrated OSD and OSR systems
Roof and planter box systems
Sump and pump systems
Incorporation of Water Sensitive Urban Design (WSUD) measures - refer to WSUD service
Incorporation of Stormwater easements - refer to Stormwater Diversions/extensions service
Lawful point of discharge selection through:
Kerb and gutter
Charged lines
Absorption trenches
Infiltration trenches
Dispersion trenches and
Level spreaders
Proprietary products
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What we deliver:
Driveway Design Plans - Custom layouts for optimal access.
What we do:
Design, Detailing and Computational Analysis of:
Driveway alignments
Vehicle turning paths (swept paths)
Driveway long sections & cross sections
Driveway crossover design
Car space design
Driveway stormwater design and integration into the stormwater management plan
Earthwork estimation
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Specialised assessments to ensure compliance.
What we deliver:
Flood Risk Management Plans/Report
SEPP Complying Development flood report
Flood Emergency Management Plan
Overland Flow Study
What we do:
Catchment Analysis
1D/2D flood modelling using HEC RAS
Flood data collection/collation/interpretation
Hydrologic and hydraulic modelling analysis of existing and proposed stormwater systems
Preparation of flood report/certificate
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Efficient water management strategies.
What we deliver:
Erosion and Sediment Control Plans (small sites)
Soil and Water Management Plans (large sites)
What we do:
Selecting and detailing erosion and sediment control measures in accordance with Landcom's "Blue Book"
Sizing temporary sediment basins
Recent Projects
Testimonials
Benefits of Amuna
Work with the Owner
Partner directly with Stu, a Chartered Civil Engineer and Qualified Builder. His hands-on expertise guarantees practical, compliant, and efficient solutions tailored to your needs.
Council Compliant Designs
Our designs align seamlessly with council regulations, minimising approval delays and costly revisions. We navigate complex requirements to deliver hassle-free solutions that meet all compliance standards.
Fast Turnaround Times
We prioritise efficiency without compromising quality, ensuring your project stays on schedule. With a streamlined process and expert knowledge, we deliver engineering solutions quickly to keep your plans moving forward.
Cost-Effective Solutions
Achieve high-quality results without unnecessary expenses through our smart, value-driven approach. We focus on optimising designs to reduce costs while maintaining structural integrity and compliance.
Our Working Process
1) Consultation & Site Assessment
We begin by understanding your project requirements and evaluating site conditions to ensure the best approach.
2) Custom Stormwater & Civil Engineering Design
Tailored stormwater and civil engineering solutions designed for Local Government Area compliance, efficiency, and long-term performance.
3) Council Approval & Compliance
We liaise with council engineers, supporting development submissions for a smooth and hassle-free approval process.
4) Project Implementation Support
Ongoing guidance throughout the build, ensuring compliance and a seamless final inspection.
Frequently Asked Questions
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Our lead times typically vary between 2-4 weeks.
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We specialise throughout NSW. Our primary LGA’s are located in Sydney, Central and South Coast areas.
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Yes we work with Councils on an as needs basis, though typically we will have one-to-one discussions with Council Engineers for each specific project.
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The cost of each consultation varies depending on the development type, site location and Council requirements. Book a consultation or contact us today for a free quote.
Visit Us
54 Mary Street,
Hunters Hill NSW 2110
Hours
Monday–Friday
9am–5pm
Phone
0410 992 700