Dual Dwelling Design & Site Planning

Binningup, WA

Structhaven recently completed a dual dwelling design project in Binningup, Western Australia, delivering a practical and buildable solution for a sloping residential site.

This project involved full site planning, drafting, and design documentation for a dual occupancy development, including a 4 bedroom, 2 bathroom main dwelling and a separate secondary dwelling (granny flat).

A key challenge was managing the natural fall of the land. This was resolved through a split-level design approach, with finished floor levels set at FFL 14.2 and FFL 15.5, supported by a retaining wall design strategy to create clean, usable building pads.

Our scope included:

  • Site layout and development planning

  • Dual occupancy design and drafting

  • Retaining wall design coordination

  • Floor plans and elevations

  • Building pad and level design

  • Development Approval (DA) ready drawings

The outcome is a functional, construction-ready design that balances compliance, usability, and cost-efficiency — ensuring the site works in real conditions, not just on paper.

At Structhaven, we specialise in residential drafting, site planning, and development design across Western Australia, delivering fast, clear, and buildable solutions for homeowners, developers, and builders.

📍 Binningup, WA
📐 Dual Dwelling | Site Planning | Retaining Design | Drafting Services

Dual dwelling site plan design in Binningup WA showing building layout, retaining wall strategy, split levels, driveway access, and boundary setbacks on a sloping residential block.
4 bedroom 2 bathroom house floor plan in Binningup WA featuring open-plan kitchen, living and dining layout, alfresco area, and double carport design.
Residential house elevation drawings in Binningup WA showing front, rear, and side views with gable roof design, weatherboard cladding, and coastal architectural style.
Retaining wall elevation design for sloping site in Binningup WA showing stepped wall levels, drainage, and structural certification requirements for residential development.

Shipping Container Compound Design

Victoria Industrial Infrastructure Project

Structhaven completed a detailed shipping container compound design for an industrial site in Victoria, delivering a functional, scalable, and compliance-ready solution tailored to remote and high-exposure environments.

This project involved the integration of multiple shipping containers, including two 20ft containers and one 40ft container, arranged around a central usable space to maximise efficiency and accessibility. The design incorporated a structural steel roof system, providing full coverage across the compound while allowing for solar panel integration and long-term durability.

A key focus of the project was environmental resilience and self-sufficiency. The compound includes:

  • 10,000L water storage tanks connected via downpipe systems

  • Solar panel-ready roofing system with appropriate fall and mounting provisions

  • Colorbond® cladding and roofing, ensuring durability in exposed conditions

  • Compliance with BAL 29 fire safety and ember-proofing requirements for bushfire-prone areas

The internal layout was designed around a central deck system, elevated to provide practical access and usability between containers. Structural elements such as pad footings, concrete slabs, and framing systems were coordinated to allow for engineering certification and constructability.

Additional detailing included:

  • Integrated decking systems with CCA-treated sleepers and structural supports

  • Sliding access points and openable zones for flexible use

  • Utility planning including underground drainage and electrical conduit pathways

  • Coordination-ready documentation for builder, engineer, and approval processes

This project highlights Structhaven’s capability in delivering container-based infrastructure design, industrial drafting services, and remote compound layouts across Australia.

Whether for mining, agricultural, or industrial applications, Structhaven provides fast, direct, and practical drafting solutions that bridge concept through to construction-ready documentation.

Shipping container compound ground floor plan with 20ft and 40ft container layout, central deck, concrete slabs, pad footings, and water tank placement for industrial facility design
Roof plan of shipping container compound featuring structural steel framing, Colorbond roofing, solar panel layout, guttering, and water tank connections for remote infrastructure design
Cross sections of shipping container compound detailing structural framing, roof pitch, internal deck levels, container integration, and construction detailing for industrial project
Shipping container compound elevations showing front, rear, and side views with Colorbond cladding, roof profile, BAL 29 compliant construction, and container integration
Typical construction details for shipping container compound including deck connections, structural elements, footing details, and material specifications for build-ready documentation

Coastal Granny Flat As-Built Documentation

Bunbury, Western Australia

Structhaven completed a detailed set of as-built architectural drawings for a coastal granny flat, documenting the conversion of an existing garage into a self-contained residential space. The scope included a full site plan, internal floor plan, elevations, building sections, and indicative structural elements, all prepared based on site measurements, sketches, and photographic reference.

The drawings were developed to support council requirements for retrospective approval, clearly capturing the current built condition including the front extension, internal layout, ceiling slopes, and visible construction systems. This project demonstrates Structhaven’s capability in delivering as-built documentation, granny flat drafting, and retrospective building plans, providing practical and submission-ready drawing packages across Bunbury and the South West of Western Australia.

Granny flat floor plan showing internal layout with living area, kitchen, bedroom and ensuite for garage conversion in Bunbury WA
Building section drawing showing ceiling heights, roof slope and structural relationships within coastal granny flat conversion in Bunbury
External elevations of coastal granny flat showing building form, cladding and openings for converted garage structure in Bunbury WA
Indicative structural elements drawing showing timber framing, roof structure and construction details of granny flat in Bunbury WA

Swimming Pool, Retaining Walls & Patio Extension

Gerlorup, Western Australia

Structhaven was engaged to prepare architectural drafting and site development documentation for a residential property in Gelorup, Western Australia.

The project involved coordinating multiple site elements including a new in-ground swimming pool, limestone retaining walls, patio extension, driveway layout and full site level integration.

Working from the feature survey and existing dwelling layout, Structhaven developed a coordinated drawing set suitable for council review and engineering certification, ensuring all new structures were positioned correctly within the building envelope, boundary setbacks and septic exclusion zones.

The design integrates an 8.6m × 4.4m in-ground heated pool, surrounding timber decking, and a gable roof patio extension, while maintaining safe clearances to the existing septic system and site levels.

Additional documentation was prepared for limestone retaining walls up to 1.05m high, pool safety fencing compliant with AS1926, and driveway grading.

The completed drawing package provides a fully coordinated residential site development plan, allowing the project to progress efficiently through engineering review and construction planning.

Residential site plan drafting showing proposed swimming pool, patio extension, retaining walls and driveway layout at 13 Ducane Road Gelorup WA by Structhaven drafting services
Construction section drawing of limestone retaining wall with drainage system and structural detailing for residential landscape works
Architectural drawing of proposed 8.6m by 4.4m in-ground swimming pool with timber decking and section details designed by Structhaven drafting services
Residential patio extension design with gable roof, timber posts and Colorbond roofing connected to existing house in Gelorup Western Australia

Mezzanine Floor & External Deck

Hideaway Bay, QLD

Structhaven was engaged to prepare drafting and documentation for a new internal mezzanine floor and external deck structure within an existing engineered shed located at Hideaway Bay, Queensland.

The objective of the project was to maximise the functionality of the existing shed by introducing a mezzanine level configured as a large bedroom, while also extending the usable outdoor space with a new external deck and roof structure connected to the building.

Working from the existing shed engineering documentation, Structhaven developed a coordinated drawing set to integrate the new structural elements without altering the primary portal frame system.

The design incorporated hot-dip galvanised steel I-beam framing for both the mezzanine and deck structures, allowing for durable coastal performance and simplified fabrication and assembly during construction.

3D drafting model showing proposed mezzanine floor and external deck structure added to an existing steel shed in Hideaway Bay Queensland.
Architectural ground floor plan showing mezzanine stair location, internal layout, and external deck positioning within an existing shed structure in Hideaway Bay Queensland.
Structural steel connection details showing beam to column plates, deck column base plates and mezzanine framing connections.
Section drawings illustrating mezzanine floor height, stair access, deck structure and roof extension inside an existing steel shed building.

Tourist Park Development Application

Cunderdin, Western Australia

Structhaven completed a comprehensive set of Development Application (DA) drawings for the installation of two new transportable cabins (dongas), along with the existing structures on the site. The scope included the site development for the proposed cabins, ensuring that all elements aligned with local council regulations.

The drawings were designed to ensure efficient site flow, clear setbacks, and appropriate stormwater management. This project demonstrates Structhaven's expertise in delivering site plans, floor plans, and elevations that comply with the local Shire’s requirements for transportable cabin developments.

The drawings included:

  • Site Development Plan: Detailing property boundaries, proposed cabins, setbacks, parking, and stormwater drainage.

  • Floor Plans for Cabins: Showing the layout, room dimensions, and internal details for both proposed cabins.

  • Elevations for Cabins: Providing the external view, building height, and materials for the proposed cabins.

Site Development Plan showing layout of transportable cabins, existing structures, and proposed stormwater drainage for the development project in Cunderdin, WA.
"Detailed floor plan of proposed transportable cabins, including room layouts and internal dimensions for the Cunderdin project."
"Elevation view of the proposed transportable cabins, showcasing building height, external materials, and design for the Cunderdin development."
"Detailed floor plan of proposed transportable cabins, including room layouts and internal dimensions for the Cunderdin project."

Steep Driveway Drainage Plan–Shire Submission

Structhaven was engaged to prepare a detailed stormwater drainage plan for a steep rural driveway in Roelands, Western Australia, within the Shire of Harvey.

The site presented a significant natural ground fall, requiring careful grading of a 150mm uPVC stormwater line to manage surface runoff while maintaining practical excavation depths. The drainage design incorporated multiple collection points spaced along the 100-metre driveway alignment, with local soakwells positioned to control discharge and prevent erosion.

Due to the natural 1:4 ground slope across the site, the stormwater pipe grade was designed to follow the terrain while ensuring buildability and practical installation. The system included:

  • Long section drainage profile

  • Stormwater pipe invert levels and grades

  • Soakwell locations and spacing

  • Surface flow direction

  • Shire-compliant drainage notes page

  • Connection strategy for lawful discharge

The project required balancing steep terrain conditions with compliant stormwater management for Shire submission, ensuring runoff is contained within the property boundary and directed appropriately.

Structhaven specialises in rural drainage plans, steep site stormwater design, and Shire submission documentation across Western Australia.

Roelands, Western Australia

Plan view of steep site driveway drainage layout with pipe alignment and soakwell spacing – Shire of Harvey.
Stormwater long section showing pipe grade and invert levels for steep rural driveway drainage.
Drainage specification and compliance notes for Shire stormwater submission.
Soakwell installation detail for steep site stormwater management in WA.

Shop Fit-Out - Korean Restaurant

Bunbury, Western Australia

Structhaven completed a detailed set of commercial shop fit-out and architectural drawings for a Korean hospitality restaurant in Bunbury. The scope included front-of-house dining and service areas, a fully coordinated commercial kitchen layout, storage and back-of-house rooms, and supporting architectural floor plans suitable for construction and internal planning.

The drawings were prepared to support restaurant fit-out requirements, focusing on efficient workflow, clear customer circulation, and practical separation between dining and kitchen areas. This project demonstrates Structhaven’s capability in delivering restaurant fit-out drawings, commercial drafting services, and architectural plans for hospitality businesses across Bunbury and the South West of Western Australia.

“Commercial shop fit-out drawings for Korean restaurant in Bunbury showing front-of-house and dining layout”
“Architectural floor plan and commercial kitchen layout for Korean hospitality restaurant fit-out in Bunbury WA”
“Restaurant fit-out architectural drawings including kitchen, storage rooms and customer areas in Bunbury”

Double-Storey Dwelling with Single-Unit Residence

This project provides complete design and drafting services for a double-story residential property on a new block of land. We offer detailed designs, floor plans, elevations, roof bracing, and concrete slab layouts for the main dwelling and a 1-bedroom unit at the back. Our plans ensure compliance with local council and Australian standards, delivering a structurally sound and functional design for both residential living and potential rental income.

Mission Beach, Queensland

Residential floor plan design for a double-story home with a main dwelling and 1-bedroom unit at the back.
Concrete slab layout for a residential property, designed for a new block of land.
Elevation drawing showing the exterior view of a double-story residential property with a 1-bedroom unit.
Roof bracing design for a double-story residential building, ensuring structural integrity.
Detailed floor plan for a 1-bedroom unit located at the back of the main dwelling.
Complete architectural design for a double-story home with residential and rental unit sections.

Residential and Commercial Drafting Services

Structhaven provides reliable drafting solutions for projects of all sizes — from new homes to large-scale commercial builds. We focus on accuracy, compliance, and clear communication throughout the process.

Our drafting services cover:

  • Residential – new builds, renovations, and extensions designed to suit your lifestyle and comply with local codes.

  • Commercial – detailed plans for offices, retail, and industrial spaces, ensuring functionality and professional presentation.

  • Concept to Completion – from initial layouts and floor plans to full construction drawings.

  • Compliance – all designs prepared to meet building regulations and council requirements.

  • Collaboration – working alongside builders, engineers, and clients for smooth project delivery.

With Structhaven, you get plans that are practical, compliant, and tailored to bring your vision to life.

See the Projects page for reference.

Structhaven residential and commercial drafting services Perth and South West WA — accurate plans, compliant drawings and professional documentation for homes, renovations and commercial builds.
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