Construction Standard Inclusions

When you build with Backyard Grannys, we ensure everything is taken care of right throughout the construction stage.

Simply click on a heading below to learn more about what’s included as standard in the price of your granny flat.


General Preliminaries

  • Building set out by surveyor
  • Home warranty insurance
  • Temporary site toilet
  • Temporary site fencing
  • Rubbish removal
  • Project Manager
  • Site supervision

Floor system – slab

  • Standard ‘M’ Class Waffle Pod Concrete Slab (310mm thick)
  • Maximum 50mm of excavation allowed as standard.
  • Pest Control to all slab penetrations and slab perimeter.

Floor system – bearers & joists

  • Bearers and Joist construction (Standard Height FFL above ground level is 650mm)
  • Excavate and concrete 300mm Diameter Pad Footings (to suit “M-Class” site classification) up to 500mm deep.
  • 230mm square Brick piers with 10mm galvanised threaded rod tiedowns to all perimeter piers.
  • Timber floor system comprised of SmartFrame LVL timbers (90×63 bearer and 90×45 joist) with 19mm ‘R-Flor’ Yellow-tongue floor sheets (foil backed for thermal barrier).
  • Pest Control. Install ant caps to all piers to meet Australian Standards.

Wall & roof framing

  • Ceiling height is 2400mm
  • 90mm treated pine for external and internal wall frames including all structural bracing to AS1684
  • Framing treated by Hyne Timber (T2 rated) and includes 25-year Termite Warranty
  • Supply and install a hip style timber truss roof structure


  • Supply and install Colorbond metal roof including metal fascia, gutters, and downpipes
  • Installation of roof flashings as required


  • Supply and installation of five (5) standard windows in standard colour range including an opaque bathroom window
  • Supply and installation of fly screens in standard colour range (fiberglass mesh only as standard)

External façade

  • Supply and install James Hardie HardiePlank 230mm external cladding
  • Supply and install 300mm F.C eaves lining


  • Supply and install standard hinged front door
  • Standard front door options:
    • Aluminium glazed weather-proof door (if design does not have minimum 1m of protective overhang to protect door from elements)
    • Pre-primed timber external door (requires 1m overhang and is only available in ‘Classic’ range)
  • Carpentry fix out including timber skirting, architraves, and installation of hollow core readicoat doors and hardware
  • Supply and installation of standard sliding mirror/non-mirrored door robes to bedroom (2 door x 1.8m wide unit) – includes doors, hardware, shelf and hanging rail


  • External walls insulated with up to R1.5 value batts subject to BASIX requirements and the NCC
  • Ceiling insulated with up to R3.0 batts subject to BASIX requirements and the NCC

Internal wall lining

  • 10mm plasterboard wall lining
  • 10mm plasterboard ceiling lining
  • 90mm cornice throughout
  • Bathroom lined with 10mm wet area gyprock

Kitchen fit out

  •  Kitchen Joinery
    • 5 linear meters of cabinetry
    • Matte finish laminate bench tops
    • Overhead cupboards
    • Range hood cupboard
    • Pantry
  • Tile splashback
  • Stainless steel single bowl sink and flick mixer tap
  • Stainless steel electric cooktop
  • Stainless steel electric oven
  • Stainless steel pull out range hood

Bathroom & laundry fit out

  • Waterproof membrane using high quality membrane products and installed by a licensed and insured professional to satisfy AS3740
  • Floor tiling (300 x 300mm tiles from ‘Classic’ range)
  • Wall tiling (2000mm high in shower with 100mm high skirting tile elsewhere)
  • 600mm long single bowl vanity unit with flick mixer tap
  • Mirror
  • Toilet suite
  • Framed shower screen
  • Shower tapware & spout
  • Laundry tub & mixer
  • Towel rail
  • Toilet roll holder
  • Square stainless steel floor wastes

NOTE: All fixtures from standard builder’s range



  • Service connections from the existing dwelling
    • Water to granny flat (up to 25 linear meters are included)
    • Stormwater to street or easement (up to 40 linear meters)
    • Sewer to granny flat (up to 25 linear meters are included)
  • Plumbing fit out to bathroom, laundry, and kitchen
  • Supply and install standard round water tank, pump, and overflow to meet BASIX requirements
  • The water tank is for grey water supply to toilet, laundry, and external tap
  • Supply and install Midea 190L heat pump hot water system


  • Electrical fit out
    • Ten (10) double power points
    • Six (6) LED Downlights to living/kitchen
    • Two (2) single power point
    • One (1) external light point
    • One (1) smoke detector
  • Light fittings including basic internal bathroom exhaust fan
  • TV antenna and one (1) internal connection point (booster is not included as standard)
  • Phone cable to lead in point on the existing house and one (1) internal connection point supplied to granny flat
  • Supply and install single phase electrical sub board meter box
  • Connection to electricity supply (sub-main) from existing house (up to 25 linear meters)


  • Internal and external painting using high quality Australian made paint by Haymes Pty Ltd
  • Two coat system to walls and ceilings and three coats to all woodwork and doors

Floor finishes

  • Supply and lay carpet to bedrooms and living area
  • Vinyl plank flooring to kitchen/living area

Window furnishing

  • Supply and install vertical blinds to all windows except bathroom

External accessories

  • Wall fixed clothes line
  • Letter box and adhesive labels to suit street number

Final clean

  • A final clean of the site and the internal of the granny flat is completed prior to handover

For more information on floor plans and costs, read our ultimate guide to granny flat designs.