Home Extension Costs Melbourne

This is a complete guide to home extension costs in Melbourne

Planning an extension in Melbourne is one of the most effective ways to upgrade your lifestyle without leaving the suburb you love. Whether you’re adding space for a growing family or creating a modern open-plan layout, understanding current building costs is essential.

Having a clear picture of home extension costs in Melbourne is essential when planning your project, whether you’re adding a single room, extending your living space or undertaking a full home transformation.

The cost of an extension in Melbourne can vary significantly depending on the type of extension, size, design complexity and level of finish. From rear home extensions and second storey additions to granny flats and outdoor living areas, each project comes with different construction requirements and pricing considerations.

This guide breaks down typical home extension costs by project type and property style in Melbourne, helping you understand what to expect and plan your budget with confidence.

In This Guide we Cover:

Home extension costs summary
Cost per square metre
What affects extension costs
Home extension costs by size
Common home extension types
Lifestyle and living space extensions
Family home extension ideas
Modular home extensions
Home extension costs by property type
Additional costs to consider
Build options to suit your budget

Home Extension Costs in Melbourne – Summary

Extension costs in Melbourne can vary significantly depending on the size, type of extension and level of finish. Whether you’re planning a small home extension, rear extension or second storey addition, understanding typical price ranges can help you budget more effectively.

As a general guide, the average cost of a home extension in Melbourne falls within the following ranges:

• Small extension 30 m2: $75,000 – $150,000
• Small to mid-size extension 50 m2: $125,000 – $250,000
• Mid to large-size extension 75 m2: $187,500 – $375,000
• Large extension 100 m2: $250,000 – $500,000
• Large – luxury high end extensions 150 m2: $375,000+

Keep in mind that the cost of a home extension in Melbourne will ultimately depend on design complexity, materials, site conditions and whether the project involves structural work or high-end finishes.

Home Extension Cost per Square Metre in Melbourne

Understanding the cost per square metre for a home extension in Melbourne is one of the most effective ways to estimate your project budget. While every extension is different, using a cost per m² guide can help you compare different project types and understand how size, design complexity and level of finish impact overall pricing.

Typical house extension cost per m² ranges in Melbourne:

• Ground floor extensions: $2,300 – $4,200 per m²
• Second storey additions: $3,300 – $5,500+ per m²

Smaller extensions often have a higher cost per square metre due to fixed construction costs, while larger projects can offer better value depending on layout and design efficiency.

Costs can increase further for projects involving structural changes to existing, premium finishes or challenging site conditions. 

What Affects Home Extension Costs in Melbourne?

While average price ranges provide a useful starting point, the cost of a home extension in Melbourne can vary significantly depending on a range of factors. From property type and location to site access and finishes, understanding what affects extension costs in Melbourne will help you plan your budget more accurately and avoid unexpected expenses.

Type of Home and Property Style

The type of property you own is one of the biggest factors influencing home extension costs in Melbourne, particularly in suburbs with older or heritage-listed homes.

• Period homes with heritage overlays often require specialised approvals and materials
• Victorian, Victorian terrace and Edwardian homes typically have higher extension costs due to structural upgrades and matching traditional features
• Californian bungalows generally fall into a moderate to high extension cost range, depending on layout and scope
• Post-war and modern homes are usually more cost-effective to extend, with fewer structural constraints

Location and Suburb (Inner vs Outer Melbourne)

Your suburb can have a major impact on the cost of a home extension in Melbourne, with inner-city areas typically more expensive than outer suburbs.

Inner Melbourne suburbs: (Hawthorn, Fitzroy, Carlton)

• Limited site access and tight blocks
• Parking restrictions and permit requirements
• Higher labour and construction costs
• Increased complexity for trades and materials

Outer Melbourne suburbs: (Ivanhoe, Eltham, Surrey Hills)

• Easier access for construction
• Larger block sizes and fewer restrictions
• Generally lower overall home extension costs

Site Access and Construction Constraints

Site access is a key factor affecting the price of a home extension in Melbourne, particularly in older suburbs and terrace-style homes.

• Narrow driveways and limited rear access
• Restricted space for storing materials and equipment
• Increased need for cranes or manual labour
• Additional traffic management or council permits

→Poor access can significantly increase extension costs per square metre in Melbourne

Council Regulations, Permits and Planning Requirements

Council approvals and planning requirements can add both time and cost to your project, particularly in areas with heritage overlay restrictions.

• Planning permits for extensions (common in Melbourne heritage zones)
• Local council overlay restrictions and zoning requirements
• Building permits and compliance documentation

→These requirements can impact both timeline and total home extension cost in Melbourne

Inclusions, Materials and Level of Finish

The level of finish and materials you choose will have a direct impact on the total cost of a home extension in Melbourne.

• Standard fixtures and finishes are more budget-friendly
• Custom joinery, stone benchtops and premium appliances increase costs
• Kitchens and bathrooms are typically the highest cost areas in any extension

→Higher-end selections can significantly increase the cost per m² for home extensions in Melbourne 

Home Extension Costs by Size in Melbourne

Home extension costs in Melbourne can vary significantly depending on the size of the project. As a general guide, extensions are often grouped into small, medium and large builds, each with different cost ranges and design considerations.

Small Home Extension Costs (10–25 m²) in Melbourne

Small home extensions in Melbourne are typically used to add a single room such as a bedroom, home office or sunroom. These types of extensions are one of the most cost-effective ways to increase space, making them a popular option for homeowners looking to improve functionality without undertaking a major build.

The cost of a small home extension in Melbourne will vary depending on design, structural requirements and finishes, but they generally offer a lower entry point compared to larger projects.

• Estimated cost: $30,000 – $125,000
• Typical cost per m²: $1,200 – $5,000+
• Common uses: bedrooms, home offices, studies and sunrooms

Medium Home Extension Costs (25–60 m²) in Melbourne

Medium home extensions in Melbourne are the most common type of project, typically involving rear extensions that create open-plan kitchen, dining and living areas or add one to two additional rooms. These extensions are ideal for improving layout, increasing natural light and modernising older homes.

The cost of a medium home extension in Melbourne will vary depending on design complexity, structural work and level of finish. Projects that involve open-plan living, kitchen upgrades or significant structural changes will generally sit at the higher end of the range.

• Estimated cost: $62,500 – $300,000
• Typical cost per m²: $2,500 – $5,500+
• Common uses: rear extensions, open-plan kitchen and living areas, 1–2 additional rooms

Large and Luxury Home Extension Costs (60 m²+) in Melbourne

Large home extensions in Melbourne typically involve full home transformations, major rear extensions or second storey additions, often combined with high-end finishes and architectural design. These projects are common for homeowners looking to significantly increase space, reconfigure layouts and create modern, open-plan living environments.

The cost of a large home extension in Melbourne will vary depending on design complexity, structural work and level of finish. Architecturally designed extensions and projects involving extensive structural changes will generally sit at the higher end of the price range.

• Estimated cost: $150,000 – $800,000+
• Typical cost per m²: $3,500 – $8,000+
• Common uses: full home renovations, second storey extensions, luxury and architectural builds

Keep in mind that home extension costs per square metre in Melbourne can vary significantly depending on your specific design, materials, site conditions and level of finish. Obtaining a tailored quote is the best way to understand the true cost of your project.

Once you understand general pricing, the next step is choosing the right type of extension for your home.

Common Home Extension Types in Melbourne

Understanding the different types of home extensions is essential when planning your project, as each option comes with its own design considerations, construction requirements and cost range.

In Melbourne, home extension costs can vary significantly depending on the type of addition, size, site conditions and level of finish. The following examples outline typical extension types and their associated costs to help guide your planning.

One Room Home Extension

A one room extension is one of the most cost-effective ways to add functional space to your home, whether for a bedroom, study or small living area. In Melbourne, these types of extensions are commonly used to accommodate growing families or create dedicated work-from-home spaces.

• Bedroom or study (standard): $25,000 – $80,000
• With ensuite: $45,000 – $120,000

Best suited for:

• Quick space additions
• Home office or study areas
• Guest bedrooms or growing families

Rear Home Extension Costs in Melbourne

A rear home extension in Melbourne is one of the most popular ways to increase living space, particularly for period homes and properties with limited frontage. These extensions typically open up the back of the home to create modern, open-plan kitchen, dining and living areas with improved natural light and indoor-outdoor flow.

The cost of a rear home extension in Melbourne can vary depending on size, design complexity and level of finish, but most projects fall within the following range:

• Typical size: 20–50 m²
• Cost: $80,000 – $250,000+
• Common inclusions: open-plan kitchen, dining and living areas

Best suited for:

• Creating open-plan living spaces
• Improving indoor-outdoor connection
• Extending period homes (Victorian or bungalow)

Side Return Extension Costs in Melbourne

A side return extension in Melbourne is a popular option for terrace houses and narrow blocks, where unused side space can be enclosed to widen the home. These extensions are commonly used to expand kitchens and living areas, creating a more functional and open layout without extending too far into the backyard.

The cost of a side return extension in Melbourne will vary depending on the size, structural work and level of finish, but typical projects fall within the following range:

• Cost: $60,000 – $180,000
• Common use: enclosing side setbacks to increase internal width
• Best suited for: terrace homes, Victorian homes and narrow properties

Benefits of a side return extension:

• Widens narrow floor plans
• Improves natural light and layout flow
• Maximises existing land without major extensions

Second Storey Extension Costs in Melbourne

A second storey addition in Melbourne is a popular solution for homeowners who need more space but are limited by land size. By building upwards, you can significantly increase your home’s living area without reducing outdoor space—making it ideal for inner-city and suburban properties.

The cost of a second storey extension in Melbourne varies depending on the size of the addition, structural requirements and level of finish. Projects that involve major structural upgrades or full upper levels will typically cost more than partial additions.

• Partial second storey addition (over garage or rear): $120,000 – $300,000
• Full second storey extension: $250,000 – $600,000+

Best suited for:

• Homes with limited land or backyard space
• Growing families needing multiple bedrooms
• Creating separate living zones upstairs

Common inclusions:

• Additional bedrooms and bathrooms
• Parents retreat with ensuite and walk-in robe
• Upstairs living areas or study spaces

Basement Extension Costs in Melbourne

A basement extension under the house is a premium solution for adding significant living space without altering the external footprint of your home. These projects are commonly used in inner-city areas where land is limited and preserving outdoor space is important.

The cost of a basement extension in Melbourne can vary significantly depending on site conditions, soil type, drainage requirements and structural complexity. Due to the level of excavation and engineering involved, basement extensions are typically one of the more expensive types of home extensions.

• Cost: $300,000 – $800,000+
• Highly dependent on: soil conditions, access, excavation and drainage
• Structural complexity: high (requires detailed engineering and waterproofing)

Best suited for:

• Inner-city homes with limited space
• High-end or architectural projects
• Creating additional living areas without extending outward

Common uses for basement extensions:

• Home theatres or entertainment areas
• Wine cellars or storage spaces
• Garage

Loft Extension Costs in Melbourne

A loft extension in Melbourne—also known as an attic conversion—is a practical way to add extra living space by utilising unused roof space. These extensions are commonly used in period homes and properties with suitable roof height, allowing homeowners to create additional rooms without extending outward or upward significantly.

The cost of a loft extension in Melbourne will vary depending on roof structure, access requirements and level of finish, but they are generally more cost-effective than full second storey additions.

• Cost: $80,000 – $200,000
• Common requirements: adequate roof height, structural reinforcement and stair access
• Complexity: moderate (less than full second storey, more than single-room extensions)

Best suited for:

• Adding bedrooms or guest rooms
• Home offices or studio spaces
• Kids retreats or additional living areas

Benefits of a loft extension:

• Utilises existing roof space
• Can be more affordable than full second storey extensions

Garage and Carport Extension Costs in Melbourne

Adding a garage or carport extension in Melbourne is a practical way to improve functionality, increase storage and enhance property value. These types of extensions are commonly used to provide secure off-street parking while integrating seamlessly with the existing home.

The cost of a garage extension in Melbourne or carport will vary depending on size, materials and whether the structure is attached or detached.

• Attached brick garage: $40,000 – $80,000
• Carport (basic to mid-range): $15,000 – $30,000

Best suited for:

• Houses without existing off-street parking
• Increasing property value and street appeal
• Adding secure vehicle storage

Common considerations:

• Council requirements and permits
• Driveway access and site layout
• Matching materials to the existing home

Granny Flat and Bungalow Extension Costs in Melbourne

A granny flat or bungalow extension in Melbourne is a popular way to add self-contained living space to your property. These types of extensions are commonly built in the backyard and can be used for guest accommodation, rental income, home offices or independent living for family members.

The cost of a granny flat in Melbourne or bungalow extension will vary depending on size, level of finish and whether the structure is fully self-contained with kitchen and bathroom facilities.

• Granny flat (self-contained): $100,000 – $300,000
• Bungalow (basic backyard studio): $70,000 – $150,000

Best suited for:

• Multi-generational living
• Rental or Airbnb income
• Home offices, studios or guest accommodation

Key considerations:

• Council approvals and zoning requirements
• Services connections (plumbing, electrical)

In addition to structural extensions, many homeowners focus on improving how they live within the space.

Lifestyle & Living Space Home Extensions in Melbourne

Lifestyle-focused extensions are designed to improve how you live in your home, rather than simply adding extra rooms. These types of additions often enhance natural light, indoor-outdoor connection and overall functionality, while also adding significant value to your property.

Open Plan Living Extension Costs in Melbourne

An open plan living extension in Melbourne is one of the most popular ways to transform older homes, particularly Victorian and bungalow properties. These extensions typically involve opening up the rear of the home to create a seamless kitchen, dining and living area with improved natural light and indoor-outdoor flow.

The cost of an open plan extension in Melbourne will vary depending on size, structural changes and level of finish, but these projects are often considered one of the most valuable upgrades for both lifestyle and resale value.

• Cost: $120,000 – $350,000+
• Typical inclusions: kitchen, dining and living or rumpus areas
• Common scope: rear extension with open-plan layout

Best suited for:

• Creating modern family living spaces
• Improving indoor-outdoor connection
• Updating older or period homes

Sunroom and Conservatory Extension Costs in Melbourne

A sunroom or conservatory extension in Melbourne is a popular way to add light-filled living space while maintaining a strong connection to the outdoors. These extensions are typically built at the rear or side of the home and can be used as informal living areas, dining spaces or relaxation zones.

The cost of a sunroom extension in Melbourne or conservatory will vary depending on materials, glazing and structural requirements, with glass-heavy designs generally costing more due to specialised construction.

• Sunroom extension: $35,000 – $70,000
• Conservatory (glass extension): $50,000 – $120,000

Best suited for:

• Creating bright, natural light-filled spaces
• Extending living or dining areas
• Enhancing indoor-outdoor connection

Key considerations:

• Glazing type and thermal performance
• Orientation and sun exposure
• Integration with the existing home

Alfresco and Outdoor Entertaining Extension Costs in Melbourne

An alfresco or outdoor entertaining extension in Melbourne is a popular way to create functional outdoor living space, allowing homeowners to enjoy year-round entertaining while improving the connection between indoor and outdoor areas. These extensions are often integrated with rear home extensions or open-plan living areas to create a seamless flow.

The cost of an alfresco extension in Melbourne will vary depending on size, materials and level of inclusions, with projects featuring outdoor kitchens, roofing and glazing typically costing more.

• Basic alfresco / outdoor area: $15,000 – $80,000
• With outdoor kitchen or premium finishes: $40,000 – $150,000

Best suited for:

• Outdoor dining and entertaining
• Extending living areas into the backyard
• Creating covered outdoor spaces for year-round use

Common inclusions:

• Roofing, decking or paving
• Outdoor kitchens or BBQ areas
• Lighting, heating and integrated seating

Pool House Extension Costs in Melbourne

A pool house extension in Melbourne is a premium addition designed to enhance outdoor living and entertaining areas. These structures are typically built alongside swimming pools and can include amenities such as change rooms, bathrooms, lounges or outdoor kitchens.

The cost of a pool house in Melbourne will vary depending on size, level of finish and whether the structure is fully enclosed or partially open. High-end designs with plumbing, glazing and custom finishes will generally sit at the upper end of the price range.

• Cost: $80,000 – $250,000+
• Typical inclusions: change rooms, bathrooms, lounges or storage
• Complexity: moderate to high depending on services and design

Best suited for:

• Homes with existing or planned swimming pools
• Outdoor entertaining and lifestyle upgrades
• High-end or architectural home extensions

Common features:

• Bathroom or shower facilities
• Outdoor kitchen or bar area
• Covered seating or lounge space

Front Porch and Verandah Extension Costs in Melbourne

A front porch or verandah extension in Melbourne is a popular upgrade for period homes, particularly Victorian terrace homes, Federation, Edwardian and Californian bungalow properties. These extensions are designed to enhance street appeal while preserving or restoring the original character of the home.

The cost of a verandah or front porch extension in Melbourne will vary depending on the level of detail, materials and whether heritage features such as timber work, posts, lacework or tiling are required.

• Cost: $15,000 – $50,000
• Common inclusions: timber posts, decking, roofing and decorative features
• Complexity: low to moderate (higher for heritage detailing)

Best suited for:

• Period homes and heritage-style properties
• Improving street appeal and façade presentation
• Restoring or enhancing original architectural features

Key considerations:

• Matching existing period details and materials
• Heritage overlay or council requirements
• Quality of finishes and craftsmanship

Family-Focused Home Extension Ideas and Costs in Melbourne

Home extensions for growing families in Melbourne are designed to create additional space, improve layout and support changing household needs over time. Whether you’re adding extra bedrooms, creating separate living zones or upgrading to open-plan living, these extensions focus on making the home more functional and comfortable for everyday family life.

Many family-focused projects combine rear extensions, second storey additions or internal renovations to maximise both space and usability, particularly in older or period homes.

Common family-focused extension ideas include:

• Parents retreat with bedroom, ensuite and walk-in robe
• Kids retreat with bedrooms, study areas or separate living zones
• Open-plan kitchen, dining and living extensions
• Additional bedrooms for growing families
• Home office or study spaces for remote work
• Outdoor entertaining areas or pool house extensions

The following sections explore these options in more detail, including typical costs and design considerations

Parents Retreat Extension Costs in Melbourne

A parents retreat extension in Melbourne—often designed as a master bedroom with ensuite and walk-in robe—is a popular way to create a private, self-contained space within the home. These extensions are typically added to the rear or upper level and are designed to improve comfort, privacy and functionality for homeowners.

The cost of a parents retreat extension in Melbourne will vary depending on size, layout and level of finish, particularly where bathrooms and custom joinery are involved.

• Typical inclusions: master bedroom, ensuite and walk-in robe (WIR)
• Cost: $80,000 – $200,000

Best suited for:

• Creating a private master suite
• Adding value to family homes
• Improving layout separation between living and sleeping zones

Kids Retreat Extension Costs in Melbourne

A kids retreat extension in Melbourne is designed to create additional bedrooms and living space for growing families. These extensions often include multiple bedrooms along with a shared lounge, study area or secondary living zone, helping to improve privacy and functionality within the home.

The cost of a kids retreat extension in Melbourne will vary depending on the number of rooms, layout and whether the extension is single or double storey. Projects that include additional bathrooms or larger living areas will typically sit at the higher end of the range.

• Typical layout: 2–3 bedrooms, bathroom, with lounge or study area
• Cost: $150,000 – $400,000

Best suited for:

• Growing families needing extra bedrooms
• Creating separate zones for children

Cost to Add Extra Bedrooms in Melbourne

Adding extra bedrooms is one of the most common reasons homeowners undertake a home extension in Melbourne. Depending on your block size and layout, additional bedrooms can be added through a rear extension or a second storey extension, each with different cost implications.

The cost to add a bedroom in Melbourne will vary depending on size, design and whether the extension involves structural changes or additional features such as built-in storage or ensuite bathrooms.

• Cost per bedroom: $30,000 – $100,000+
• Rear extension bedrooms: typically lower cost
• Second storey addition bedrooms: higher cost due to structural work

Best suited for:

• Growing families needing additional rooms
• Converting underutilised space into functional bedrooms

Home Office and Studio Extension Costs in Melbourne

A home office or studio extension in Melbourne is a popular way to create a dedicated workspace within the home, particularly as more people work remotely or run businesses from home. These extensions can be designed as part of a rear extension, integrated into a garage conversion, or added as a front home extension, depending on the layout of the property.

The cost of a home office extension in Melbourne will vary depending on size, location within the home and level of finish, with standalone studios or fully serviced spaces typically costing more.

• Cost: $20,000 – $80,000
• Common options: rear extension, garage conversion or front of house extension
• Complexity: low to moderate depending on services and design

Best suited for:

• Remote work and home-based businesses
• Creative studios or consulting spaces
• Separating work and living areas within the home

These types of family-focused extensions are often combined with larger rear ground floor or second storey addition  projects, allowing homeowners to create flexible, long-term living solutions that adapt as needs change.

 Budget-Friendly Modular Home Extensions in Melbourne

Modular home extensions in Melbourne are an increasingly popular alternative to traditional construction, offering a faster and more cost-effective way to add space. Built off-site and installed on your property, modular extensions are ideal for simpler projects where speed, budget and minimal disruption are key priorities.

These types of extensions are commonly used for home offices, studios, granny flats and extra bedrooms, making them a flexible solution for a wide range of needs.

• Typical cost: $50,000 – $200,000 depending on size and finish
• Construction method: built off-site and installed on location
• Build time: significantly faster than traditional extensions

Best suited for:

• Home office or studio extensions
• Granny flats or backyard accommodation
• Adding extra bedrooms or flexible living space
• Storage, workshops or multi-purpose rooms

Key benefits of modular extensions:

• Faster construction time
• Lower labour costs
• Less disruption to your home
• More predictable build timelines

While general costs provide a useful guide, your property type can also influence design, approvals and overall extension costs.

Home Extension Costs by Property Type in Melbourne

Home extension costs can vary depending on the type of home you own. Period homes such as Victorian terraces and Californian bungalows often require a different approach to design, approvals and construction compared to modern homes.

If you’re planning an extension to a period property, you can explore our period home extensions in Melbourne services page for a broader overview of design approaches, project types and what to expect.

Victorian Home Extension Costs

Victorian homes are one of Melbourne’s most common period styles, often requiring a tailored approach to balance heritage character with modern living. Extension costs can vary depending on layout, structural condition and the level of renovation required alongside the build.

→Explore Victorian home extension costs in Melbourne to understand pricing, design considerations and typical project scopes.

Californian Bungalow Extension Costs

Californian bungalows are well suited to rear extensions and open-plan living transformations, making them one of the most popular extension types across Melbourne. Costs will depend on the size of the extension, integration with the existing home and overall level of finish.

→View Californian bungalow extension costs in Melbourne to see typical price ranges, layout ideas and project examples.

Federation Home Extension Costs

Federation homes are known for their wider layouts, decorative detailing and strong street presence, often allowing for more flexible extension designs compared to narrower period styles. Extension costs can vary depending on layout, structural requirements and the level of renovation needed to integrate new and existing spaces.

→Explore Federation home extension costs in Melbourne to understand pricing, design considerations and typical project scopes.

Edwardian Home Extension Costs

Edwardian homes typically feature simpler layouts and generous proportions, making them well suited to rear extensions, open-plan living upgrades and, in some cases, second storey additions. Extension costs will vary depending on design complexity, site conditions and the level of finish.

→Explore Edwardian home extension costs in Melbourne to see typical price ranges, layout options and project examples.

Once you understand how costs vary by property type, the next step is choosing the right type of extension for your home.

Additional Home Extension Costs to Budget For

In addition to construction costs, there are several additional costs to consider when planning a home extension in Melbourne. These expenses can vary depending on the complexity of your project, site conditions, council requirements and level of design detail.

Understanding these hidden costs of a home extension early in the planning process can help you budget more accurately and avoid unexpected expenses.

Design, Permits and Site Costs

• Design and drafting costs: $5,000 – $25,000
  (includes architectural drawings, plans and documentation)
• Planning permits (if required): $2,000 – $10,000
  (varies depending on council and project scope)
• Engineering costs: $3,000 – $15,000
  (structural design, soil reports and compliance requirements)
• Site costs (demolition, excavation, access): highly variable
  (can increase depending on site conditions and accessibility)

These additional costs can have a significant impact on the total cost of a home extension in Melbourne, particularly for complex projects or properties with limited access or planning restrictions.

Home Extension Build Options to Suit Your Budget in Melbourne

Choosing the right construction method is just as important as the design when planning a home extension in Melbourne. Different build approaches can impact overall cost, construction time and level of customisation, making it important to understand the differences between custom-built extensions and modular home extensions.

Custom Designed and Built Home Extensions

Custom home extensions in Melbourne are fully tailored to suit your home, lifestyle and design preferences. These projects are ideal for complex layouts, period homes or high-end finishes, where flexibility and integration with the existing structure are essential.

While custom extensions typically involve higher costs and longer build times, they offer greater design freedom and a more seamless result.

Best suited for:

• Rear extensions and open-plan living
• Second storey additions
• Period home renovations and extensions
• High-end or architectural projects

Modular Home Extensions (Budget-Friendly Option)

Modular home extensions in Melbourne are a cost-effective alternative to traditional construction, with components built off-site and installed on your property. These extensions are often used for simpler projects where speed and budget are key considerations.

While modular builds offer faster construction and lower labour costs, they are generally less flexible in design compared to custom-built extensions.

Best suited for:

• Home office or studio extensions
• Granny flats and backyard accommodation
• Adding extra bedrooms
• Simple or standalone structures

In general, modular extensions are more affordable and faster to build, while custom extensions offer greater flexibility and a higher level of finish.

Frequently Asked Questions About Home Extension Costs in Melbourne

To explore what’s possible for your home, see our home extension services in Melbourne, where we outline different extension types, layouts and design approaches.

Planning Your Home Extension in Melbourne

Choosing the right builder can have a significant impact on both the outcome and overall cost of your home extension project. Working with an experienced team helps ensure your extension is carefully planned, well-integrated with your existing home and delivered to a high standard.

At Mastercraft Construction, we specialise in custom home extensions across Melbourne, with a focus on quality craftsmanship, thoughtful design and tailored solutions to suit each home and lifestyle. From initial planning through to construction, our approach is centred on delivering a seamless result.

• Boutique Melbourne builder with personalised service
• Custom designs tailored to your lifestyle
• High-quality craftsmanship and finishes
• Transparent pricing
• End-to-end service from design to completion

We work across Melbourne and surrounding suburbs, delivering high-quality home extensions that blend seamlessly with existing homes.

If you’re planning a home extension and want a clearer idea of costs for your specific project, speaking with an experienced builder can help you understand what’s achievable within your budget.