Granny Flat Design
Buildana Kairo
60m² · 2 bed · 1 bath · indicative $210,000 from
All floor plans and room sizes are fully customisable.
About this design
Some designs get it right without trying to be clever. The Kairo is 60m² with 2 bedrooms, living space, bathroom and separate laundry. The dimensions are practical, the flow is logical, and it photographs well too — which matters if you're building it as a rental or secondary income.
Kairo is about timing and opportunity—the right moment to build, the smart use of your land. This 60m² design with two beds and one bath is built for investment thinking. Build it now, or build it when the market is right—the design is sound either way. Buildana brings that kind of strategic thinking to secondary dwelling space.
You're not making a rushed decision. You're making a smart one.
Room dimensions
What's included as standard
Every Buildana design comes with a full inclusions package — not a stripped-back base spec that needs topping up before it's liveable. The Kairo is no different. All fitout listed below is standard.
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 84m² (perimeter 36.7m × 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 36.7m, 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
Is the Kairo set up specifically for rental return?
Kairo's the design we steer investors to. Two equal-sized bedrooms (so you can lease as a share house if the suburb suits it), separate-metered electricity and water as standard upgrades, BASIX 7-star to keep tenant bills down, and a layout where the bathroom and laundry are stacked — cheaper hot-water plumbing run, fewer maintenance call-outs over a 15-year hold.
Will the Kairo fit on my block?
Under SEPP (Housing) 2021 you can build a secondary dwelling up to 60m² on residential lots of 450m² or more in NSW, with required setbacks (typically 3m rear, 0.9m sides). The Kairo's built footprint sits inside that envelope. We do a free block check off your title plan before you commit — it tells us in writing whether the Kairo fits and which approval pathway (CDC or DA) applies.
How long does it take to build the Kairo?
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 Kairo, weather and council pace dependent. We update the program weekly during construction so you can see exactly where the build is up to.
What's actually included in the Kairo base price?
The base price covers the dwelling itself — slab, frame, roof, exterior cladding, full internal fitout, all standard inclusions listed on this page, plus our fixed builder margin and warranty. What's not in it: site costs (excavation, retaining, rock removal), council/CDC fees, separate metering, BASIX upgrades beyond the minimum, and any structural alterations to the existing main dwelling. Site costs get quoted off a real assessment, not a postcode generic.
Request a formal proposal for the Kairo
Pick your upgrades, send through your details, and we'll come back with a fixed-price proposal — usually within 3 business days.