When a project is properly scoped, designed and priced before it starts, construction becomes the calm part. We deliver architectural custom homes and certified Passive House builds across Sydney and Newcastle, managed end to end, with the same clarity we bring to pre-construction.
Most cost blowouts are decisions made too late. By the time we break ground, scope, selections and pricing are settled, so construction runs to a plan rather than discovering it as we go.
We coordinate every trade, supplier and consultant. You deal with one builder accountable for programme, budget and quality, not a chain of people pointing at each other.
Clear communication, an honest programme, and no buried allowances. You always know where the project stands, what is next, and why each decision was made.
We take on projects substantial enough to warrant a managed, builder-led approach, where coordination, structure and finish quality genuinely matter. We do not do small isolated single-trade work or price-only tendering. If your project is significant and you want it done properly, this is the work we do.
Talk to Us About Your ProjectNew custom homes, replacement dwellings and architecturally designed residences, managed from site establishment through to handover. Typically $1m–$3m+.
Substantial reconfiguration, structural alterations, new services and the integration of old and new work. For homeowners transforming a home rather than moving.
More living space, new bedrooms, expanded kitchens and indoor-outdoor living, staged from demolition and footings through to final integration with the existing home.
Upper-level additions that add bedrooms, bathrooms, living space or views while retaining the original level. Careful structural, weather-protection and access management.
Significant structural change, difficult access, staged demolition, retaining, steelwork or engineered timber, best delivered as part of a broader renovation or new build.
Wet areas, joinery, decks, balconies and external works delivered to a high standard, generally as part of a larger managed project rather than isolated single-trade jobs.
"I highly recommend AGATHĒ. The quality of their work is excellent, and they take pride in doing the job properly — not just making it look good on the surface. It's hard to find builders you can genuinely trust, but these guys are the real deal."
The projects that run smoothly are the ones that were properly resolved before a single trade arrived on site. Our preferred path is EFE or PAC first, then construction, so by the time we build, the hard decisions are already behind you.
See Our Pre-Construction ProcessWhether you have plans in hand or are still thinking it through, we are happy to have an honest conversation. No obligation. We will tell you if we are not the right fit.