Clear pricing, transparent inclusions, and a full turn-key build — designed around your land, your budget and your family. Every project is tailored, never templated.
At Kadmia Constructions, we believe a granny flat should be simple to start and clear to budget. Our customisable designs deliver genuine value, giving you the freedom to shape a secondary dwelling that suits your lifestyle — without the pricing surprises.
We provide a full turn-key package: our team manages design, engineering, council approvals, construction and service connections, so your granny flat is handed over ready for keys on the bench.
This guide shows indicative pricing for our current range. Your final price will reflect the finishes you select and the individual constraints of your block — sloping sites, or properties in bushfire or flood-affected areas, can add cost. We'll walk you through a detailed quotation before you commit, so you understand your total investment up front.
Stone benchtops, quality appliances, soft-close joinery and stylish tapware — designed for real cooking, not display.
Split-system air conditioning, insulation to current standards and LED lighting throughout.
Full wet-area fitout with quality fixtures, tapware, waterproofing and ventilation — no hidden allowances.
Durable flooring throughout and built-in wardrobes to every bedroom.
Colorbond roofing, quality cladding, driveway and path integration, and basic landscaping allowance.
Water, power and sewer connections, plus council application and certification managed by us.
Ideal as a studio-plus guest quarters or a compact home office with overnight potential.
Our most popular size — the classic parents' retreat or long-term rental.
Full family living in a secondary dwelling — three genuine bedrooms and generous living space.
For narrow or sloping blocks where the footprint needs to stay small but the living doesn't.
Prices are indicative, include GST and standard inclusions, and apply to the Greater Sydney region on sites without significant constraints. Use our cost calculator for a first-pass figure, then let our team refine it on site.
On moderately falling sites a granny flat is typically built on a concrete slab. Steeper blocks may need a floor on bearers and joists — stronger engineering, higher cost.
The distance from your granny flat to the water, electricity and sewer connection points on your block directly influences connection cost.
Every site we build on is soil-tested. Reactive or fill-affected ground can require deeper footings or piers, which adds to the build.
If your property sits in a bushfire-prone area with a BAL of 12.5 or higher, additional construction requirements apply to protect your granny flat.
Flood-affected properties may need a raised floor level and flood-compatible detailing — an extra cost we'll quantify early, not spring on you later.
Tight access, retained trees, easements or a long run from the street can change how we build — we assess this at your free site visit.
A custom or designer facade elevates the look of your granny flat. Roofline, cladding selection and window style each carry their own price point.
Patios, decks, carports and pergolas extend the liveability of your granny flat — and the build. We'll price them as part of your overall scope.
All our designs start from a high standard. Raked ceilings, skylights, highlight windows and custom kitchen layouts are options we love building — priced transparently.
Excellent-standard fixtures are included in every build. If you're after something unique or ultra-premium, we can source and install it — with a clear cost attached.
Kadmia Constructions designs and builds granny flats across Greater Sydney — from the Hills District through Western Sydney and beyond. Our designs are shaped for suburban blocks, narrow sites and everything in between, with a builder who knows the local councils and their requirements.
Get in touch today for a free site assessment. We'll walk your block, talk your budget, and tell you honestly what's achievable.
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