Townhouse and duplex sites
OSD coordination for multi-unit residential developments where storage, discharge and driveway or landscape areas compete for space.
Onsite Detention Design
Onsite detention design for Melbourne residential projects.
Linfinity Engineering helps architects, builders and owners coordinate onsite detention requirements with stormwater drainage, levels and buildable site details.
We support OSD tanks, storage volumes, outlet control, discharge coordination, pits, pipes, basement drainage interfaces and civil documentation for residential developments across Melbourne.
Onsite detention design
OSD design Melbourne
Residential OSD engineering
Service Fit
Good fit when council requires detention or flow control
OSD affects levels, storage space, discharge location and construction sequencing. It should be coordinated early with architectural, structural and landscape decisions.
New homes and extensions
Advice and documentation where council requirements trigger detention, flow control or specific stormwater discharge details.
Constrained infill blocks
Practical detention and drainage coordination where limited falls, tight boundaries, basements or retaining walls affect the system.
Approval and construction
Documentation that helps approvals, pricing and site installation by coordinating OSD with the broader drainage package.
Deliverables
Typical onsite detention outputs
- OSD sizing, storage and outlet-control details where required
- Stormwater drainage layout coordination with detention components
- Pit, pipe, discharge and overflow path advice
- Coordination with architectural levels, structures and site constraints
- Documentation suited to council, authority or approval review where applicable
Melbourne Support
Based in Camberwell, working across Melbourne.
Linfinity Engineering supports homeowners, builders, architects and developers across metropolitan Melbourne and wider Victoria by arrangement.
Process
From detention requirement to coordinated drainage detail.
01
Confirm requirements
We review council or authority requirements, survey, architectural drawings, proposed levels and discharge options.
02
Coordinate storage and discharge
We resolve detention location, storage, outlet control, pits, pipes and overflow paths with the site design.
03
Prepare documentation
The documentation supports approval review, pricing and construction coordination with the broader project team.
Common Questions
Questions before you send drawings or site details.
Send the project context
Upload drawings, site photos, surveys, reports or a short note about what you need. Linfinity will review the scope and respond with the right next step.
Start an EnquiryWhat is onsite detention or OSD?
Onsite detention temporarily stores stormwater and controls the discharge rate from a site. Councils or authorities may require it to reduce pressure on downstream drainage systems.
Does every townhouse project need OSD?
Not every project needs OSD, but many townhouse and residential development sites require detention or flow control depending on council requirements, impervious area, discharge options and site constraints.
When should OSD be considered?
OSD should be considered early, before levels, landscaping, driveway layout, basement interfaces and structural details are fixed.
Related Services
Other Linfinity services that may affect this scope.
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Residential Structural Design
Residential structural engineering in Melbourne for architects, builders and owners needing new home, townhouse, duplex, renovation, basement and construction documentation.
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Engineering for Architects
Structural and civil engineering support for Melbourne architects needing early design advice, townhouse coordination, drainage, OSD and buildable documentation.
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Townhouse Engineering
Townhouse structural and civil engineering in Melbourne for architects, developers and builders needing coordinated structure, drainage, OSD and documentation.
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New House Structural Engineer
Structural engineering for new houses in Melbourne, including architectural homes, slabs, footings, framing, basements, retaining walls and drainage coordination.
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Renovations & Extensions
Structural engineering for Melbourne renovations, extensions, alterations, additions, existing-structure assessment, strengthening and staged construction advice.
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Steel Structure Design
Steel structure design in Melbourne for residential, shop, office and warehouse projects needing beams, columns, connections, framing and coordinated documentation.
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Concrete, Footings & Slabs
Concrete, footing and slab structural engineering in Melbourne for residential slabs, foundations, basement structures, reinforced concrete and site-aware foundation details.
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Retaining Walls and Fences
Retaining wall and fence structure design in Melbourne for residential retaining walls, basement retaining walls, boundary structures and development sites.
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Structural Inspections
Melbourne structural engineer inspections and reports for cracking, movement, distress, renovation concerns, construction-stage checks and demolition support.
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Civil & Drainage Design
Civil and drainage engineering in Melbourne for stormwater layouts, onsite detention, basement drainage, carpark grading, pavements and minor road design.
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Residential Stormwater Drainage
Residential stormwater drainage design in Melbourne for new homes, extensions, duplexes and townhouses needing pits, pipes, discharge and council coordination.
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Geotechnical Investigation
Geotechnical investigation and soil report coordination in Melbourne for site classification, footing exposure, foundation advice and structural design decisions.