Explore Design Idea — Free Home Design Concept for Sydney Alterations & Additions
Published: 2026-08-18 | Author: giantA Pty Ltd | Blog: Architecture | Reading time: 5 min
Quick Summary
Get a free design concept (sketch + AI-generated 3D render) for your Sydney home alteration or addition project in 1–2 business days. Created by a builder with 20+ years' experience and thousands of NSW residential projects. Conditions apply: up to 4 bedrooms, 1–2 storeys, existing floor plan required.
What Is Explore Design Idea?
Explore Design Idea is a complimentary concept design service from giantA Pty Ltd — an established NSW construction and design company. We help homeowners in Sydney and surrounding regions visualise the potential of their property before committing to full architectural documentation.
Whether you are planning a:
- First-floor addition (second storey)
- Rear or side extension (ground floor)
- Internal reconfiguration (alteration)
Our team delivers a sketch design + AI-powered 3D rendering within 1–2 working days, at no cost.
Who Qualifies?
| Criteria | Detail |
|---|---|
| Location | Sydney and surrounding NSW regions |
| Project type | Residential alteration, addition, or extension |
| Storeys | 1 or 2 storeys |
| Bedrooms | Up to 4 bedrooms |
| Required document | Existing floor plan (old DA/CDC drawings, or real-estate marketing floor plan) |
Not eligible? If your project falls outside these parameters (e.g., multi-dwelling, commercial, >2 storeys, or >4 bedrooms), we still offer an advisory design review for $500–$1,000 AUD depending on project scale.
What You Receive
- Sketch Design — A hand-drawn-style concept layout showing the proposed alteration/addition.
- 3D Rendering — An AI-generated photorealistic visualisation of the proposed design, produced within 1–2 business days.
Note: This is a concept-phase deliverable, not a Construction Certificate (CC) or Development Application (DA) drawing set. It is intended to help you visualise possibilities and make informed decisions before engaging an architect or draftsperson for formal approvals.
How It Works (5 Steps)
Step 1 — Submit Your Existing Plans
Upload your current floor plan (old DA/CDC drawings, council records, or real-estate marketing plans) via our online form.
Step 2 — Describe Your Goals
Tell us what you want to achieve: extra bedrooms, open-plan living, a granny flat, or a modern second-storey addition.
Step 3 — Design Review
Our lead designer — with 20+ years of NSW residential building experience — reviews your brief and existing constraints.
Step 4 — Concept Delivery
Receive your sketch design + AI-generated 3D render within 1–2 business days.
Step 5 — Next Steps
If you are happy with the concept (and 95% of our clients are), you can:
- Proceed to formal Development Application (DA) or Complying Development Certificate (CDC) with giantA's consulting team.
- Request a detailed quote for construction.
- Simply keep the concept for future reference — no obligation.
Why Is It Free?
At giantA, we believe homeowners should see the potential of their property before spending thousands on architectural drawings. This service builds trust, showcases our design capability, and — if you are satisfied — we simply ask for:
- One Google Review for giantA Pty Ltd, or
- A social-media recommendation sharing your experience.
That's it. No hidden fees. No lock-in contracts.
Frequently Asked Questions (FAQ)
Do I need to pay anything upfront?
No. The concept design is completely free for qualifying projects. The $500–$1,000 advisory fee only applies to non-qualifying or complex projects.
What if I don't have an existing floor plan?
You can often obtain one from your local council's online portal (e.g., NSW Spatial Services or your council's DA tracker). Real-estate listing floor plans also work.
Is this a DA or CDC drawing set?
No. This is a concept sketch for visualisation and decision-making only. Formal approval drawings require a Development Application (DA) or Complying Development Certificate (CDC) prepared by a qualified designer or architect.
How long does it take?
1–2 business days after we receive your existing floor plan and project brief.
Can I use this concept for council submission?
No. Council submissions require compliant drawings (DA/CDC/CC). However, the concept can be used as a reference brief for your architect or draftsperson.
What areas do you cover?
Greater Sydney, Northern Beaches, Hills District, Inner West, Eastern Suburbs, Sutherland Shire, and surrounding NSW regions.
What happens if I'm not satisfied?
There is no obligation. The service is free, and you are not required to proceed with giantA for any further work.
Ready to See Your Home's Potential?
Apply for Your Free Explore Design Idea →
Limited spots available each month. Submit your existing floor plan today.
About giantA Pty Ltd
giantA Pty Ltd is a Sydney-based construction and consulting company specialising in residential alterations, additions, and new builds across NSW. With over two decades of experience, we combine practical building knowledge with modern design tools (including AI-assisted visualisation) to deliver projects that are compliant, cost-effective, and beautiful.
- Services: Architectural consulting, DA/CDC documentation, construction management, BASIX/NatHERS, granny flat design.
- Regions: All Sydney metro areas and regional NSW.
- Accreditations: Licensed builder, BASIX/NABERS assessors, CDC-compliant designs.
Learn more: gianta.com.au
Last updated: August 2026. Terms and conditions apply. giantA Pty Ltd — NSW builder licence checked.