what it costs to build a custom home in melbourne
the short answer
an architect-designed residence doesn't really have a price per square metre; it has a budget it is designed to. for the residences we build, that budget is the starting point: a concept shaped to $2 million and one shaped to $3 million are different residences, not one design at two prices.
what you can choose is when the cost becomes certain. in the traditional sequence, the builder's price arrives at tender, once the design is finished. in ours, the builder's pricing sits alongside the architect from the first sketch, and the concept is guaranteed buildable within your budget.
below: why square-metre rates mislead, how the two pathways compare, and where cost is commonly lost.
why a square-metre rate doesn't fit
published rates for custom-built homes in melbourne span roughly $2,700 to $6,900 per square metre, before gst, land, fees and site works (rlb riders digest, 2026). for an architectural residence, the gap between those figures is the house itself. these are the things that decide where yours sits.
the site
slope, soil, access and overlays shape the structure and the approvals; a tight or sloping site asks more of the build.
the form
basements, cantilevers, large spans and complex rooflines cost more to build than their floor area suggests.
the specification
stone, joinery, glazing, lighting and technology are where residences differ most; each is costed as it's selected.
the existing house
restoring or extending a period house adds investigation, a longer approval, and a contingency for what is found once it's opened up.
the timing
construction prices keep moving: victorian house construction prices rose 3.7% in the year to june 2026 (abs). the longer the gap between design and contract, the more that matters.
two pathways, compared
both pathways begin with an architect's design, and both can produce an exceptional residence. the difference is when the builder's price joins the design, and who holds the whole project.
an architect's forecast of cost is, by design, indicative: the price belongs to the builder who will build it. the australian institute of architects notes that knowing your builder early lets a design be shaped for a cost-effective build. our process is built around that idea.
where cost is commonly lost, and how it's held:
pricing after design
when builders price a finished design, quotes can return well above budget; one melbourne practice puts the range at 20% to 50% over, with redesign to follow. we cost each decision as it's made, so the design doesn't get ahead of the budget.
savings found late
when a design comes in over budget, savings are usually found by changing methods, materials or floor area after it's resolved, which can cost the intent itself. we test method and cost alongside the practice while decisions are still open.
allowances and variations
where details are still open at tender, builders price them differently, as allowances or substitutes, and variations follow. our fixed-price contract is set once every material, junction and fitting is specified.
coordination
engaged separately, each consultant works to their own brief. every consultant on your residence works from one coordinated brief, managed by us, with one party responsible for the outcome.
time
tender and negotiation add time between design and site, while prices move. our construction begins within two weeks of building approval, with the team that resolved the design.
questions about building costs
how much does an architect cost in melbourne?
fees are negotiated rather than set by a scale. for new custom homes in melbourne, full services are commonly quoted at around 8% to 15% of construction cost, often lower in percentage terms on larger builds. engineering, interiors, landscape and surveys are usually engaged separately.
why don't you quote a square-metre rate?
because for an architectural residence it says too little. published melbourne rates for custom homes span roughly $2,700 to $6,900 per square metre; what decides where a residence sits is its site, form and specification. we cost the residence itself, as it's designed.
is the construction price fixed?
yes. once construction drawings are complete, your price is set in a fixed-price construction contract. after signing, it moves only if you choose to change the scope or selections, and any change is priced and agreed with you first.
are there costs beyond the construction budget?
a small number, each set out before you commit: design resolution, authority fees, any changes you choose to make, optional services, and conditions that can't be known until works begin.
what deposit is required?
victorian law caps the deposit on a domestic building contract of this size at 5% of the contract price.
do i need a budget before we start?
yes. your budget is the starting point of your concept, not a figure checked at the end; the most useful figure is the one you're comfortable investing, not the most you could stretch to.
how long does it take?
six weeks from your first consultation to a costed concept, typically eight for a heritage house; construction begins within two weeks of building approval.
architect-designed homes
a design practice matched to you, costed as it's designed
architect fees
how design fees work, stage by stage
architect or design and build?
the ways to begin, compared
custom homes
designed and built as one, from first concept to handover
knockdown rebuild
from the old house to the new, managed as one project
what can i build on my land?
zones, overlays, trees and title, explained
start with your budget
every concept is shaped to the budget you set, costed against live pricing, and guaranteed buildable within it.