Full build
Detached granny flat construction
The classic Sydney granny flat is a freestanding building at the rear of the lot, and its construction has a distinctive character: full residential quality delivered through a side gate. Materials handling, trench routes and trade sequencing all happen in an occupied property's backyard, which rewards tight programming and a crew that treats the household as neighbours.
Scope
What this covers
Slab or footing systems engineered to the soil report for the rear yard
Frame, roofing, cladding and lock-up on the compact envelope
Full internal fit-out: kitchen, bathroom, laundry provision and living spaces
Trenching and connection of water, sewer, power and drainage to the new dwelling
Certifier inspections through construction and the occupation certificate at completion
Timing
When it's needed
Construction follows the complying development certificate or DA and construction certificate. Because the work happens metres from the main house, the program is planned around household routines: access hours, pet containment, washing lines and parking are logistics, not afterthoughts.
A backyard build puts a working site inside a family property: keep children and pets away from trenches, stacked materials and the work zone even outside work hours, and never use ladders or scaffolds left on site. Flag any open excavation or unsecured fencing to the site contact the moment you see it.
Quote variables
What shapes the scope
Rear-yard access width and whether materials move by hand, machine or crane
Soil conditions and drainage falls at the back of the lot
Specification level of kitchens, bathrooms and built-ins
Distance from existing service points to the new dwelling
Granny flat construction is residential building work under NSW law and must be carried out by a builder holding a current NSW Fair Trading contractor licence, under a written contract, with home building compensation cover in place for work above the insurance threshold before a deposit is taken. Licence details can be checked in minutes on the public online register: do that for any builder you deal with, whatever website introduced them.
Granny flat services
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