Home Additions & House Extensions in Sydney
Expand Your Space, Enhance Your Lifestyle
At T3 Interior, we specialise in custom home additions and house extensions in Sydney, helping homeowners create more space without leaving the home they love. Whether you’re looking to add a new living room, extend your kitchen, or build a second storey, we manage the entire process — from concept to construction.
Tailored Home Additions
We design every project to suit your lifestyle, layout, and budget — delivering seamless home additions in Sydney that feel like part of your original home.
Experts in Second Storey Builds
From structural planning to finishes, we specialise in safe, stylish second storey additions in Sydney that maximise your living space and property value.
Full-Service Project Management
As trusted professionals in house extensions across Sydney, we manage everything from council approvals to final handover — so you don’t have to.
What We Offer: Types of Home Additions
We provide a full range of house extensions and second storey additions in Sydney, tailored to suit your property and goals:
- Rear Extensions – Expand your living room or kitchen into the backyard
- Side Extensions – Maximise space on narrow lots
- Ground-Floor Additions – Extra bedrooms, bathrooms or office spaces
- Second Storey Additions – Double your space without sacrificing land
- Outdoor & Alfresco Areas – Create stylish entertaining zones
- Garage Conversions – Transform unused areas into functional rooms
All additions are custom-designed and managed in-house for seamless results.
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Design Integration & Structural Planning
We don’t just add space — we make it feel like it was always part of your home. Our team carefully considers structural load, layout flow, lighting, and overall symmetry to ensure your house extension in Sydney blends seamlessly with the original build. From rooflines to foundation work, every detail is thoughtfully planned.
Material & Finish Matching
A great home addition should look and feel consistent — inside and out. We source high-quality materials to match your home’s existing finishes, including bricks, flooring, roofing, windows, and trim. Whether you’re building a second storey addition in Sydney or extending your living area, we make sure old and new come together beautifully.
FAQs
1. How long does a typical home addition take in Sydney?
Most home additions in Sydney take between 10 to 20 weeks, depending on the scope, approvals, and material availability.
2. What types of house extensions do you offer?
We offer ground-floor additions, second storey additions, rear and side extensions, and alfresco/outdoor areas — all tailored to your needs and existing structure.
3. Do I need council approval for a house extension in Sydney?
Yes, most house extensions in Sydney require DA or CDC approval. We handle the entire process, including documentation, submissions, and compliance.
4. Can you build a second storey addition on any home?
Not all homes are suitable, but our team will assess the structure and advise on feasibility. We specialise in safe, stylish second storey additions in Sydney.
5. Will the new extension match the existing style of my home?
Absolutely. We carefully match materials, rooflines, finishes, and layout to ensure your home addition looks cohesive and timeless.
6. Can I live in my home during the extension work?
In many cases, yes. We schedule works to reduce disruption. For larger projects like second storey additions, we’ll discuss the best approach for your situation.
7. How much does a house extension cost in Sydney?
Costs vary by size, design, and material choices. We provide a detailed, transparent quote for every house extension project in Sydney.
8. Do you manage the entire project, including trades and timelines?
Yes. As full-service renovation experts, we oversee everything from planning and approvals to construction and handover — all in-house.
What our clients say
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Tom Benjamin
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Neo Yang
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