

How Sydney's Southern & Inner West Homeowners Are Wasting $150,000 and 12 Months Before Their Home Even Starts — And Why Most Never See It Coming.
5 Alarming Mistakes Homeowners Make Before Hiring a Builder — And Why Most Don't Find Out Until It's Too Late.
Download the free guide: 5 Things Sydney's Southern & Inner West Homeowners Wish They Knew Before Spending $1.5+ Million Building Their Home.
Get the free guide now ↓
Most home builds that go over budget and over time don't fail during construction. They fail in the decisions made before a single drawing is produced.
- You have a number in your head for what your knockdown rebuild or new home should cost. No one has told you whether that number is realistic — until the first builder's quote comes back and it isn't.
- Your designer produced plans you fell in love with. Your builder told you they won't work as drawn — too expensive, too complex, or structurally problematic. Now you're paying for a redesign you didn't budget for.
- Your designer and your builder aren't talking to each other until it's too late. The result is a design that looks beautiful on paper but creates cost problems the moment a builder prices it.
- Council approval in Sydney's Southern & Inner West takes longer than anyone told you — and every month your project sits in assessment, your holding costs accumulate while nothing moves.
- By the time you realise something has gone wrong, you're emotionally and financially committed to a path that's costing far more than it should — and the cost of changing course feels higher than the cost of pushing through.
The free guide covers the five things Sydney's Southern & Inner West homeowners wish they'd known before committing to a $1.5 million build
- Why most home build budgets miss by $80,000–$150,000 — and the one conversation that closes that gap before design starts
- The design and build model explained — how one integrated team protects your budget, your timeline, and your sanity
- What Sutherland Shire, Inner West and Bayside councils actually look for in a residential DA — and how the right strategy saves months
- Real construction cost ranges for a Sutherland Shire, Inner West or Bayside home in 2026 — knockdown rebuild through to prestige custom
- The questions to ask any designer and builder before you sign anything — and the answers that should make you walk away
The Partnership
Profectus Design is a registered building design practice specialising in luxury custom homes, dual occupancy, and high-quality residential development across NSW bringing over 10+ years of experience navigating complex residential approvals across 14 councils. Profectus Design takes on a select number of projects each year, ensuring every client receives direct involvement from concept through to approval and construction documentation.
8ctagon specialises in luxury custom homes, boutique duplex and multi-dwelling developments across New South Wales. We deliberately take on a select number of projects, enabling us to provide direct involvement throughout the build and the confidence that every aspect will be delivered to the highest standard.
Together, Profectus Design and 8ctagon have partnered to offer Sydney's Southern & Inner West homeowners a complete design and build experience — one integrated team managing concept design, council approvals, and construction from first conversation to final handover.