Granny Flat Design
Buildana Sora
60m² · 2 bed · 1 bath · indicative $226,000 from
All floor plans and room sizes are fully customisable.
About this design
The Sora lands at 60m² with 2 bedrooms, living space, bathroom and separate laundry. For what it fits into that footprint, it's one of the more efficient layouts in the range. All rooms are fully customisable — dimensions, finishes, configurations.
Sora means sky—open and airy. Even at 60m², two beds, this design breathes. The layout doesn't feel cramped or claustrophobic. It's built with that spatial sense. That's harder to get right than it sounds. You can stack rooms and hit the square metre target. Or you can actually design for how the space feels.
Sora is the second approach. It's modern, it's clean, and it doesn't feel tight. That matters when people are actually living in the space.
Room dimensions
What's included as standard
The Sora is built to a complete specification — not a shell waiting for fitout decisions to eat into your contingency. Review the inclusions below. If something doesn't suit, we can change it before the contract locks in.
Bathroom Inclusions
- •Floor to ceiling wall tiles, including 300 x 600 ceramic tile options.
- •Stylus Banksia back to wall dual flush wc.
- •750mm polyurethane vanity with stone top, drop-in sink & mirror over.
- •Look vanity and shower mixers.
- •Look towel rail & toilet roll holder.
- •Framed shower screen.
- •Light, fan and heater combination.
Kitchen Inclusions
- •Sprayed polyurethane doors and panels (any colour of your choice).
- •10m cabinets includes upper, lower & overhead fridge cabinets & pantry.
- •600mm full length pantry with microwave space.
- •Laminate benchtop, tiled splashback – includes 300 x 600 options.
- •Westinghouse oven and ceramic cooktop (gas cooktops where available).
- •Ducted slide out rangehood (Euromaid), Clark 1 3/4 bowl with ‘look’ mixer.
Upgrade options
Tick what you want — your indicative total updates live. Final fixed price comes back in your formal proposal after a site assessment.
Exterior finish system
Choose the wall system for the external envelope. Pricing below is calculated against this design's external wall area — approximately 76m² (perimeter 33.2m × 2.7m wall height, less 15% for openings). Standard polystyrene-render is included; Hebel, face brick and brick-render are priced as upgrades over standard.
Foamboard polystyrene cladding system finished with cement render and texture coat. Included in the base price — light, fast to install, and the standard exterior on every Buildana granny flat.
Ceiling height
Standard ceiling height is 2.4m. Higher ceilings make small footprints feel larger and lift natural light through windows. Pricing below is calculated against this design's external perimeter 33.2m, covering the extra wall framing, plasterboard, render/cladding and cornice/painting needed to raise the envelope.
Standard ceiling height across all Buildana granny flats — already 100mm taller than the BCA minimum for habitable rooms. Included in the base price.
Doors & highlight windows
Door height and highlight-window upgrades. Tall doors are typically chosen alongside the 2.7m or 3.0m ceiling upgrade so the proportions stay right.
Slim 300 x 600mm highlight windows for natural light to bathrooms, ensuites, hallways, walk-in robes or above kitchen benches. Frosted or clear glazing. $1,100 each, supplied and installed. Pick how many you'd like below.
Premium fitout
Lift the standard spec to higher-end finishes.
Air conditioning
Choose how the granny flat is cooled. The standard living split is included in your base price.
Included as standard. Wall-mount inverter split unit to the living area, sized to the room load.
Outdoor & site
Pricing varies with site conditions, falls, and existing services. Final figures confirmed in writing after a site visit.
Compliance, services & metering
Almost always required for tenanted secondary dwellings. Pre-ticked by default.
Add-on rooms & layout changes
Layout extensions are quoted from your block survey — they may need a fresh CDC/DA pathway.
Common questions
How is Sora more open than other 60m² designs?
The living and kitchen sit under a continuous 2.7m ceiling rather than the standard 2.55m, with no bulkhead between them. The doorway from the living to the bedroom corridor is a wider 920mm opening rather than the standard 820mm. Both decisions add about 4–5% to material cost, but they're what make Sora read as 70m² rather than 60m².
Can I rent the Sora out as a separate dwelling?
Yes — this is exactly what SEPP (Housing) 2021 allows for. The Sora is built to be tenanted independently of the main house. To do it cleanly you'll want separate water and electricity metering (configurator option above) so the bills sit with the tenant, plus the BASIX 7-star upgrade to keep their power bills competitive. We'll flag any council-specific tenancy conditions during the block check.
Can I customise the Sora floor plan before contract?
Yes. Every dimension and room layout is fully customisable up to the point we lock structural drawings for engineering. Most clients adjust at least one room — bedroom 2 sizing, bathroom door direction, kitchen length. Bigger changes (adding a bedroom, removing the porch, splitting the laundry off) need a fresh layout pass and may shift the indicative price. Small changes don't.
How long does it take to build the Sora?
Allow about 14–18 weeks on site once the slab is poured, plus 6–10 weeks for design, engineering, BASIX, CDC or DA, and pre-construction. Total wall-clock from signed proposal to handover is typically 5–7 months for the Sora, weather and council pace dependent. We update the program weekly during construction so you can see exactly where the build is up to.
Request a formal proposal for the Sora
Pick your upgrades, send through your details, and we'll come back with a fixed-price proposal — usually within 3 business days.