Why it pays to get a concept design and cost analysis done

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Planning a luxury renovation, second-storey addition, or custom home is exciting, but it also raises one crucial question:

For Northern Beaches, Mosman, and Upper North Shore homeowners investing $600k+, getting cost clarity upfront isn’t optional — it’s essential.

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The Smarter Way to Plan Your Renovation

At The Perfect Space Design + Build, we believe confidence starts long before construction. That’s why we’ve developed our Concept Design + Cost Analysis (CDCA) process — a design-led, budget-conscious approach that gives you complete clarity before committing to approvals or contracts.

In just four weeks, you’ll know:

• Exactly what your home will look like with high-quality 3D visualisations
• Exactly what it will cost — with 95% accuracy upfront
• How long your project will take from concept to completion
• What’s included — realistic allowances and specifications clearly itemised
• Your total project cost — including preliminary fees and site-specific considerations

This premium process gives you the peace of mind you need to make informed decisions and ensures your dream design is achievable, buildable, and within budget.

Your comprehensive concept design and cost analysis includes the latest in 3D image technology and floor plans as well as the important the build cost of the design with detailed preliminary costs, inclusions, materials, and any other requested optional extras.

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Here’s a closer look at what’s involved:

What’s the alternative? The traditional way of submitting architectural plans to council for approval and then putting out for tender can be a path fraught with budget nightmares. You could end up with a council approved design that you can’t afford to build.

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Why Our Clients Choose CDCA

Investing in a CDCA means you move forward with absolute confidence:

• You won’t waste $15k–$50k on plans you can’t afford to build
• You’ll avoid painful redesigns after DA approval
• You’ll be in the strongest position to secure finance pre-approval
• You’ll know exactly what’s achievable within your budget before committing

Unlike traditional architects who design first and cost later, our integrated design + build approach ensures your plans are beautiful, functional, and realistic — all before council submission.

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The Hidden Risk of Doing It the Old Way

The traditional approach — getting an architect to draw plans, submitting to council, and then sending them to tender — often leads to budget blowouts and stressful compromises.

We regularly meet homeowners who’ve spent $20k+ on designs only to discover construction costs are hundreds of thousands over budget.

Our CDCA process flips that on its head. You’ll know before council lodgement that your design aligns perfectly with your financial expectations, saving you time, money, and unnecessary frustration.

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A Premium Process Backed by Experience

With over 17 years of experience delivering high-end renovations and custom homes across the Northern Beaches, Mosman, and Upper North Shore, we’ve perfected a process that unites:

This isn’t just about pricing a project — it’s about crafting a design-led, fully integrated plan that sets you up for success.

Submitting plans to the council is a necessary step in the process, but it does take time, and there is a cost outlay of approximately $15-$50k (See what preliminary fees should I expect to pay before I can build). With a concept design and cost analysis done, you will know that the design you submit to the council will be one that you can afford to build, and your council submission and architectural fees will not have been wasted.

Read choice ‘s article $28,000 in architect’s fees for a design they can’t afford

Need a hand? Give us a call today on 02 9907 4568 and set up a FREE consultation with our talented design and build team who’d be happy to answer your questions and get you started on an accurate cost upfront for your extension.