Reimagine what your home can be
It's time to expand your home the smart way. LikeSilk Building specialises in extensions and first floor additions that maximise liveable space, boost your home's value, and suit the way your family lives, all with transparent pricing.
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Real client feedback on extensions
Hear what Sydney homeowners say about working with LikeSilk for their home additions, from design to delivery and everything in between.
Ideas for your Extension or First Floor
Explore first floor additions and home extensions inspiration in Sydney, adding space, style, and long-term value.
Extension & addition pricing guidelines
Get a clear picture of what's achievable at different budget levels, from internal reconfigurations to full second-storey additions. Our guides show typical inclusions to help you plan with confidence.
Ground Level Space Extension
Starting from
$220,000
As a guide this could include:
- Add guest bedroom or home office
- New bathroom or powder room
- Rear or side layout extension
- Upgrade flooring in new areas
- Split system air-conditioning
- Joinery or built-in robes
- New roof and gutters (if required)
- Approvals and site prep included
- HBCF cover and warranties
- Minimal disruption construction
Modern Rear Extension
Starting from
$330,000
As a guide this could include:
- Extend open-plan living area
- Add large stacker or bifold doors
- Covered alfresco with ceiling fan
- Polished concrete or timber floors
- New slab and structural works
- Energy-efficient glazing
- Internal painting and lighting
- Seamless indoor-outdoor flow
- CDC or DA approvals included
- HBCF insurance and handover
First Floor Home Addition
Starting from
$420,000
As a guide this could include:
- Add 2x bedrooms and 1x bathroom
- New internal staircase
- Timber or hybrid flooring
- Full roof and external cladding
- Lighting, power, and data points
- Custom built-in wardrobes
- Double glazing to all windows
- Full interior painting
- DA or CDC approval & engineering
- HBCF warranty and certifications
Why build with LikeSilk?
Minimal Disruption Guarantee
We keep your home liveable throughout the build, with site protection, dust control, and a clean-as-you-go team who respect your space and routine.
Built for Long-Term Value
From joinery construction to appliance choices, we focus on durable materials and timeless design so your home stays functional and stylish for years.
Quotes with Line-Item Detail
No lump sums, no grey areas. Our quotes break down exactly what you're paying for, so you can cut, upgrade, or swap with full visibility.
Spec With Confidence
We'll guide you through selections with real-world advice, helping you choose fittings that won't date, break, or blow out your budget.
Clean Site Promise
We leave your home liveable during the build, with daily site cleans, dust control measures, and respectful tradies who treat your space like their own.
Pro-Level Project Tracking
You'll get full access to your project's live schedule, updates, and photos, so you're never chasing us for answers. Our systems are built to keep you in control.
Extension & addition process
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Planning
We explore your space, goals, and budget to map out what's possible and worth investing in.
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Maximising ROI
We help you make smart decisions on where to spend for the biggest impact and long-term value.
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Design Selections
Together we choose layouts, finishes, and fittings that suit your lifestyle and design taste.
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Quoting & Prep
You'll receive a detailed fixed-price contract and we prep the site for a safe, clean start.
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Construction
Our in-house team delivers your renovation to spec then walks you through every last detail.
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Extension FAQs for Sydney Homes
Answers to common questions on house extension costs, approvals, timelines, and what's involved in a first floor addition project.
How much does a first-floor addition cost in Sydney?
The cost of a first floor addition in Sydney typically ranges from $250,000 to $450,000+, depending on size, complexity, and finishes. For a tailored quote, book a free renovation planning call with LikeSilk Building.
Do I need council approval for a home extension in NSW?
Yes, most home extensions in Sydney require approval via either a DA (Development Application) or a CDC (Complying Development Certificate). The right path depends on your property, zoning, and the scale of the project.
How long does a first-floor addition or extension take?
Timelines vary based on project size and approval method, but most first floor additions in Sydney take 6 to 9 months from design to completion. LikeSilk provides a live schedule so you always know where things are at.
Can I live in my home during the extension build?
In many cases, yes. LikeSilk works with you to stage construction and maintain safety. However, for major second storey additions, a temporary move may be recommended. We discuss this during your free consultation.
What's the difference between a DA and a CDC?
A DA (Development Application) is assessed by your local council, while a CDC (Complying Development Certificate) is a fast-tracked approval via a private certifier. Both can be used for home additions, depending on your property and plans.
Will a home extension increase my property value?
A well-designed home extension in Sydney can significantly increase your resale value and usable space. Many clients choose LikeSilk to add a second storey or rear extension for exactly this reason.
What factors affect the cost of a home extension?
Key cost drivers include size, materials, site access, heritage restrictions, and structural changes. LikeSilk provides transparent, line-item quotes tailored to your scope so there are no surprises.
How do I choose the right builder for a home extension?
Look for licensed builders with clear communication, proven experience with custom house extensions, and strong reviews. LikeSilk Building guides you from concept to completion, offering transparency and quality workmanship you can trust.
Extension planning advice
Browse renovation blogs covering first floor additions, DA vs CDC, design tips and how to add long-term value to your Sydney home.
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Building Contract Checklist
A plain-English checklist of everything your home building contract should include before you sign - from scope and pricing to warranties and insurance.
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Home Extensions Sydney: Your Options Explained
A practical guide to Sydney home extensions, conversions and additions. Covers costs, approval processes, and how to choose the right approach for your situation.
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DIY vs Professional Bathroom Reno
What you can and can't DIY in a bathroom renovation. Know which tasks require a licensed professional in NSW and where you can save money safely.
Ideas & inspiration for your project
Browse our Pinterest boards filled with extension layout inspiration, external finishes, and interior design ideas for your growing home.
