Building Solution Australia

Investor Duplex Layout — Duplex and Dual Occupancy | Building Solution Australia

Concept PlanClass 1a — Dual Occupancy

Investor Duplex Layout

Two rental incomes, one construction programme

260m² floor area4 bedrooms4 bathrooms2 car spaces2 storeys

Concept Plan — this floor plan is for illustrative purposes only. It does not represent an approved design. Subject to design development, engineering, and planning approval.

A duplex product designed specifically for residential investors — durable finishes, low-maintenance materials, and a layout optimised for rental yield across both dwellings. Delivered as a complete design-and-construct package with integrated approval management.

Floor Plan

Concept Plan

Two dwellings — each with two bedrooms, one bathroom, open-plan living/kitchen, single garage. Shared party wall. Separate entries and outdoor spaces. Dimensions indicative only.

Concept Plan — indicative layout only, subject to design development and approval

Concept Plan — indicative layout only, subject to design development and approval

Internal Layout

Functional layout optimised for rental appeal. Durable finishes throughout. Separate services and metering.

External Design Options

  • Colorbond steel cladding — low maintenance
  • Brick veneer — standard range
  • Fibre cement — painted

Construction Method

LGS framing with shared party wall. Factory-prefabricated components. Investor-grade specification throughout.

Product Specifications

structureLGS framing to NASH Standard
party wallLGS framing with acoustic and fire separation — FRL 60/60/60, Rw 50 minimum
floor groundConcrete slab on ground
floor upperLGS floor cassette system
roofColorbond steel
walls externalLGS framing with Colorbond or brick veneer
walls internalPlasterboard lining — 10mm
insulationR2.5 wall batts, R4.0 ceiling batts — NCC 2022 compliant
windowsAluminium powder-coated — double glazed
kitchensPrefabricated kitchen units — 600mm appliances, stone benchtops
bathroomsModular bathroom pods
laundrySeparate laundry — each dwelling
garageSingle garage — each dwelling
electricalSeparate metering — each dwelling
plumbingSeparate services — each dwelling
energy rating7-star NatHERS minimum

Standard Finishes

  • Colorbond or brick veneer cladding
  • Colorbond roof
  • Stone benchtops
  • Hybrid flooring — living areas
  • Durable carpet — bedrooms
  • Ceramic tiles — wet areas

Upgrade Packages

Solar Package

Solar PV for each dwelling — reduces tenant energy costs

Depreciation Optimised

Specification reviewed for maximum tax depreciation — quantity surveyor report included

Strata Subdivision

Strata subdivision for separate titles — sell or hold independently

Typical Applications

Dual rental income investmentNRAS and affordable housingBuild-to-rent at small scaleSuperannuation fund investment

Approval Considerations

Investor duplex requires DA. Seek planning advice for your specific site and council.

Project Examples

  • Investor duplex — dual rental income — South-West Sydney

Important Notice

All floor plans, specifications, and product information are indicative only and subject to change without notice. Concept plans and indicative layouts are for illustrative purposes only and do not represent approved designs. Final designs are subject to design development, structural engineering, services coordination, and planning and building approval. Building Solution Australia does not guarantee that any product can be approved or constructed on any specific site without site-specific assessment. Consult a qualified building professional and your relevant planning authority before making any decisions based on this information.