Granny Flat Design
Buildana Zaya
50m² · 2 bed · 1 bath · indicative $175,000 from
All floor plans and room sizes are fully customisable.
About this design
50m², 2 bed, 1 bath. Most granny flat buyers overthink this. The Zaya has 2 bedrooms, living space, bathroom and separate laundry — everything you need, nothing that'll blow the budget. Fully customisable if you want to make it yours.
Zaya carries a premium feel—radiance, warmth, refined design. But this isn't about looking expensive. It's about being built with genuine care. 50m², two bedrooms, one bath, and every inclusion chosen because it works, not because it's trendy. You're looking at this design and thinking it could work as secondary dwelling or something more refined for a specific purpose.
That's the point. Zaya doesn't put you in a box. It's practical but refined—built by someone who understands that even a compact space deserves to be done properly.
Room dimensions
What's included as standard
The Zaya 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 69m² (perimeter 30.0m × 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 30.0m, 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
Why pick the 50m² Zaya over a 60m² 2-bed?
Zaya is the brief 'I want premium spec but the block doesn't fit 60m²'. The bedrooms are slightly smaller than the 60m² range — both still queen-capable, just tighter — but the saved square metres go into wider window heads, taller doors and a deeper bathroom. Net result: 50m² that feels more considered than a base-spec 60m² with no upgrades.
Does the Zaya go through CDC or DA?
Almost always CDC (Complying Development Certificate) — that's what SEPP (Housing) 2021 was set up to enable. CDC is faster (10 working days statutory) and cheaper than DA. The Zaya only needs DA if your block has heritage overlay, bushfire BAL-29 or above, flood zone, or a council that's opted out of CDC for secondary dwellings. We confirm which pathway applies during the free block check.
What's actually included in the Zaya 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.
What construction system does Buildana use for the Zaya?
Concrete slab on ground, timber wall framing to AS 1684, metal-deck roof on engineered trusses. Exterior cladding is your choice from poly-clad weatherboard, Hebel power-panel, face brick or rendered finish. The build system is identical to the larger homes Buildana puts up — same trades, same standards, same warranty. Granny flats aren't a separate, lower-grade product line for us.
Request a formal proposal for the Zaya
Pick your upgrades, send through your details, and we'll come back with a fixed-price proposal — usually within 3 business days.