Why Choose House Extensions Over Moving?
Moving house involves significant costs beyond the purchase price—real estate agent fees, stamp duty, conveyancing, removalist expenses, and the emotional toll of leaving your neighbourhood. For Melbourne homeowners, these costs can easily exceed $70,000 on a median-priced home.
A property extension allows you to:
- Stay in your beloved neighbourhood: Keep your children in the same schools and maintain your community connections
- Customize to your exact needs: Design spaces that perfectly suit your lifestyle and family requirements
- Add substantial property value: Quality extensions typically add more value than their construction cost
- Avoid stamp duty and agent fees: Save tens of thousands in transaction costs
- Maintain your established gardens: Preserve the mature trees and landscaping you've nurtured over years
Types of House Extensions We Build in Melbourne
At SLK Homes, we specialize in various types of house additions tailored to Melbourne properties:
Ground Floor Extensions
Perfect for creating open-plan living areas, additional bedrooms, home offices, or expanding kitchens. Ground floor extensions typically cost $2,400-$4,500 per sqm and preserve your outdoor space.
Second Storey Additions
Ideal when land is limited. Add multiple bedrooms, bathrooms, or a master suite above your existing home. Second storey extensions cost $3,800-$5,500 per sqm but maximize your property's potential.
Rear Extensions
Melbourne's most popular extension type. Extend backwards to create flowing indoor-outdoor living spaces perfect for entertaining, with seamless garden access.
Side Extensions
Widen your home to add extra rooms or enlarge existing spaces. Particularly effective for terraces and narrow blocks throughout Melbourne's inner suburbs.
Master Suite Additions
Create a luxurious private retreat with an enlarged bedroom, walk-in wardrobe, and ensuite bathroom. Perfect for growing families or those wanting hotel-style comfort at home.
Kitchen Extensions
Expand your kitchen into an entertainer's dream with additional storage, larger bench space, and room for a family dining area or butler's pantry.
House Extension Costs in Melbourne (2025)
Understanding extension costs helps you plan your budget effectively. While every project is unique, here are typical cost ranges for Melbourne house extensions:
Cost Per Square Metre
- Ground Floor Extensions: $2,400 - $4,500 per sqm
- Second Storey Additions: $3,800 - $5,500 per sqm
- Basic Living Rooms/Bedrooms: $2,000 - $3,500 per sqm
- Kitchen Extensions: $3,500 - $5,000 per sqm (includes cabinetry and fixtures)
- Bathroom Additions: $4,000 - $6,000 per sqm (includes plumbing and tiling)
80 sqm Ground Floor Extension
Total Cost: $192,000 - $360,000
Typical for: Open-plan living/dining/kitchen area
50 sqm Second Storey
Total Cost: $190,000 - $275,000
Typical for: 2 bedrooms + bathroom
Factors Affecting Extension Costs
- Site Conditions: Sloping blocks, difficult access, or poor soil increase costs
- Structural Complexity: Load-bearing walls, complex rooflines, or unusual designs
- Materials & Finishes: Premium fixtures, hardwood floors, or custom joinery add value
- Wet Areas: Bathrooms and kitchens cost more due to plumbing and waterproofing
- Heritage Overlays: Period homes require matching materials and specialist techniques
- Council Requirements: Some areas have stricter regulations affecting design and cost
Transparent Fixed Pricing
At SLK Homes, we provide detailed, itemized quotes that outline exactly what's included in your house extension project. No hidden fees, no surprise variations—just honest, upfront costs. We build trust through transparency, ensuring you can budget with complete confidence from day one.
The SLK Homes Extension Process
Our proven process ensures your house extension is delivered on time, on budget, and to the highest quality standards:
Initial Consultation
We visit your home to discuss your vision, needs, and budget. Our team assesses your property, identifies opportunities, and provides preliminary advice on what's possible.
Design Development
We create detailed plans that maximize your space, complement your existing home's architecture, and meet all regulatory requirements. You'll see exactly what your extension will look like.
Fixed Price Quote
After finalizing the design, we provide a comprehensive fixed-price quote detailing all costs, inclusions, and timelines. No guesswork, no surprises—just clarity.
Permits & Approvals
We handle all council applications, building permits, and engineering requirements. Our experience with Melbourne councils ensures smooth, timely approvals.
Construction
Our skilled team begins building your extension with minimal disruption to your daily life. Regular updates keep you informed, and quality inspections ensure everything meets our high standards.
Handover & Beyond
We conduct final inspections, walk you through your completed extension, and provide ongoing support. Your satisfaction is our priority even after handover.
Ground Floor vs Second Storey Extensions
Choosing between building out or building up depends on your property, budget, and lifestyle needs:
Ground Floor Extensions
Pros:
- Lower cost per sqm
- Easy access to outdoor areas
- Better for accessibility needs
- Simpler construction process
Cons:
- Reduces garden space
- May require extensive excavation
- Setback restrictions apply
Second Storey Additions
Pros:
- Preserves outdoor space
- Captures better views
- Adds more privacy
- Maximizes small blocks
Cons:
- Higher cost per sqm
- Requires structural assessment
- More complex approvals
Our extension specialists will assess your property and help you choose the best option for your circumstances.
Ready to Extend Your Home?
Let's discuss your house extension project and create the extra space your family needs. Free consultation and design advice.
Call 0433 984 595Planning Your House Extension in Melbourne
Do I Need a Permit for My Extension?
Most house extensions in Melbourne require permits from your local council. The specific permits depend on your project:
- Planning Permit: Required if your extension impacts heritage overlays, zoning regulations, or exceeds certain sizes
- Building Permit: Required for all structural work, issued by a registered building surveyor
- Plumbing Permit: Needed when adding bathrooms, kitchens, or laundries
SLK Homes manages the entire permit process for you, liaising directly with councils and ensuring all documentation is correct and complete.
How Long Does a House Extension Take?
Timeline expectations for Melbourne house extensions:
- Design & Planning: 4-8 weeks
- Permit Approvals: 6-12 weeks (varies by council)
- Construction: 3-6 months for ground floor, 4-8 months for second storey
- Total Timeline: 6-12 months from initial consultation to completion
These timeframes can vary based on project complexity, site conditions, and council processing times. We provide realistic schedules and keep you informed throughout.
Why Choose SLK Homes for Your Melbourne Extension?
Three Generations of Expertise
Our family has been building quality extensions across Melbourne for over 25 years. This experience means we understand the unique challenges of extending Melbourne homes—from heritage Victorians to modern townhouses.
Fully Licensed & Insured
SLK Homes holds DBU & CDB-U licenses (License: CDB-U 52560), registered with the Building Plumbing Commission. We operate under strict compliance with the National Construction Code, ensuring every extension meets the highest safety and quality standards.
Seamless Integration
We pride ourselves on extensions that look like they've always been part of your home. Our attention to detail ensures new work blends perfectly with existing architecture, maintaining property value and aesthetic appeal.
Minimal Disruption
We understand you're living in your home during construction. Our team works efficiently, maintains a clean site, and schedules noisy work considerately to minimize impact on your daily life.
Our Extension Portfolio
We've successfully completed house extensions across Melbourne including Mill Park, Heidelberg, Bundoora, Glen Iris, Essendon, and many other suburbs. Each project showcases our commitment to quality home extension services and client satisfaction.
Extension Ideas for Melbourne Homes
Open-Plan Living Extensions
Melbourne families love open-plan spaces. Extend your rear to create a flowing kitchen, dining, and living area that opens to your backyard. Perfect for entertaining and family life.
Home Office Extensions
With more Melburnians working from home, dedicated office spaces are in high demand. A well-designed extension provides a professional workspace separate from family areas.
Multi-Generational Extensions
Add a self-contained section with bedroom, bathroom, and kitchenette for aging parents or adult children. This increasingly popular option keeps families close while maintaining privacy.
Entertainment Extensions
Create the ultimate entertaining space with a dedicated area for media, games, or hobbies. These extensions add lifestyle value and are perfect for growing teenagers.
Client Success Stories
"Our house extension was completed on time and within budget. SLK Homes delivered outstanding craftsmanship and excellent customer service throughout the entire process."
— Joel & Emma, Bundoora
"Working with SLK Homes was stress-free. Their family values, experience, and reliability made extending our home a wonderful journey."
— Emily Wright, Mornington Peninsula
"SLK Homes transformed our house with absolute professionalism and attention to detail. The extension exceeded our expectations in every way."
— Sarah Thompson, Melbourne
Frequently Asked Questions About House Extensions
How much does a house extension cost in Melbourne?
House extensions in Melbourne typically cost between $2,400-$4,500 per square metre for ground floor extensions and $3,800-$5,500 per sqm for second storey additions. An average 80 sqm ground floor extension costs $192,000-$360,000, while a 50 sqm second storey addition costs $190,000-$275,000. Factors affecting cost include materials, design complexity, site conditions, and whether you're adding wet areas like bathrooms or kitchens.
Do I need council approval for a house extension?
Most house extensions in Melbourne require council approval. You'll typically need a Planning Permit (if your extension impacts heritage areas or zoning) and a Building Permit (for all structural work). Some small extensions may qualify for exemptions, but it's essential to check with your local council. SLK Homes handles all permit applications and council liaisons, ensuring your extension meets all regulatory requirements.
How long does it take to build a house extension?
The typical timeline for a house extension in Melbourne is 6-12 months from initial consultation to completion. This includes design and planning (4-8 weeks), permit approvals (6-12 weeks), and construction (3-8 months depending on size and complexity). Ground floor extensions are generally quicker than second storey additions. SLK Homes provides realistic timelines and keeps you informed at every stage.
Is it cheaper to extend or move house?
Extending is often more cost-effective than moving. When you sell and buy in Melbourne, you'll pay real estate agent fees (2-3%), stamp duty (around 5.5%), conveyancing costs, removalist fees, and other expenses—easily totaling $50,000-$100,000 on a median-priced home. A well-designed extension allows you to stay in your neighborhood, avoid these transaction costs, and add value to your existing property.
Can I live in my house during the extension?
Yes, most families stay in their homes during extensions. We plan construction to minimize disruption, schedule noisy work considerately, and maintain safe separation between work and living areas. Some projects (like major kitchen renovations) may require temporary alternative arrangements for certain areas, but complete relocation is rarely necessary. We discuss living arrangements during planning to ensure your comfort.
Will my house extension add value to my property?
Quality house extensions typically add more value than their construction cost. A well-designed extension that adds functional living space, additional bedrooms, or updated bathrooms can increase property value by 10-20% or more. The exact value increase depends on the type of extension, quality of finishes, and your suburb's property market. Extensions also improve lifestyle value for your family.
What's better: ground floor or second storey extension?
The best choice depends on your property and needs. Ground floor extensions cost less per sqm ($2,400-$4,500) and provide easy outdoor access, ideal for open-plan living and families with young children or elderly members. Second storey additions ($3,800-$5,500/sqm) preserve garden space, offer better views, and maximize small blocks. Our extension specialists assess your property to recommend the most suitable option.
How do I choose the right extension builder in Melbourne?
Look for licensed builders (DBU/CDB-U) with extensive extension experience, strong portfolios, transparent pricing, and excellent client testimonials. Verify they're registered with the Building Plumbing Commission and carry proper insurance. Choose a builder who communicates clearly, provides detailed quotes, and has proven experience with Melbourne council approvals. SLK Homes brings 25+ years of extension expertise and three generations of craftsmanship.
Start Your House Extension Journey Today
Extending your Melbourne home is an exciting opportunity to create the space your family needs while staying in the neighborhood you love. With 25+ years of experience and three generations of family expertise, SLK Homes is the extension specialist Melbourne families trust.
From initial design concepts to final handover, we guide you through every step of the extension process with transparency, quality craftsmanship, and genuine care. Whether you're planning a ground floor extension, second storey addition, or complete home renovation, we have the expertise to bring your vision to life.
Get Your Free Extension Consultation
Ready to discuss your house extension? Contact SLK Homes today for expert advice and a no-obligation consultation.
📞 Phone: 0433 984 595
📧 Email: info@slkhomes.com.au
📍 Location: CBD, Melbourne
🕐 Hours: Monday–Friday, 9:00 AM – 6:00 PM
🏗️ License: DBU & CDB-U 52560
About SLK Homes: Melbourne's trusted extension specialists delivering quality house additions and property extensions since 1999. Licensed DBU & CDB-U builder (License: CDB-U 52560), registered with the Building Plumbing Commission. Specializing in ground floor extensions, second storey additions, and complete home transformations across Melbourne. Our family, building for families.