Can I Build a Granny Flat on My Block? A Melbourne Site Assessment Checklist
One of the most common questions we hear from Melbourne homeowners is:
“Can I actually build a granny flat on my property?”
The answer is often yes, but every site is different.
Recent Victorian planning reforms have made it easier for many property owners to build a small second dwelling or granny flat in Melbourne, creating opportunities for additional rental income, accommodation for family members, or increased property value. However, not every backyard is suitable, and understanding the constraints of your site is essential before progressing with plans.
Industry research has identified more than 229,000 Melbourne properties with potential suitability for a secondary dwelling, commonly referred to as a granny flat, highlighting the significant opportunity available to homeowners across the city.
At Orlando Homes, every project begins with a detailed site assessment. Before investing in plans or construction, a professional granny flat site assessment can help determine whether your Melbourne property is suitable for a secondary dwelling. Use the checklist below to understand some of the key factors Orlando Homes reviews when assessing a site.
If you’re considering whether you can build a granny flat in Melbourne, understanding your property’s unique characteristics is the first step.
1. Do You Have Enough Usable Backyard Space?
The first thing we assess is whether there is enough space to comfortably accommodate a secondary dwelling.
Many homeowners focus solely on land size, but the position of the existing home is often more important than the size of the block itself.
Questions we consider include:
While these factors are important, many homeowners are surprised to discover their property is more suitable than they initially thought.
For example, Orlando Homes recently assessed a property in Frankston where the homeowner initially believed there wasn’t sufficient access or backyard space to accommodate a secondary dwelling. Following a detailed review of the site’s layout, access requirements and service locations, we identified a suitable solution that allowed for a one-bedroom secondary dwelling while maintaining functional outdoor space for both homes.
If you’re concerned your backyard may be too small, it’s important not to rule out the opportunity too early. In many cases, the overall layout of the block is more important than the total backyard size. Designs such as our Toronto 25 have been specifically created for smaller and more constrained sites, providing a fully self-contained secondary dwelling within a compact footprint while still delivering comfortable day-to-day living.
2. Where Are the Existing Services Located?
One of the most important factors influencing the cost of a secondary dwelling is the location of existing services.
During a site assessment, we review:
The further a secondary dwelling is located from these services, the greater the potential infrastructure costs.
At Orlando Homes, we regularly find that service locations have a greater impact on project costs than homeowners expect. Identifying these requirements early helps avoid unexpected costs and provides greater certainty when budgeting for a granny flat project.
3. Are There Any Easements on the Property?
Easements are one of the most common constraints we encounter.
Many Melbourne properties contain:
Building over an easement may restrict where a secondary dwelling can be positioned and can sometimes require additional approvals.
Reviewing the title is an important part of understanding what can realistically be achieved on a site.
In our experience, easements are one of the most common reasons homeowners incorrectly assume they cannot build a granny flat. While easements can restrict building locations, they do not necessarily prevent a secondary dwelling from being constructed. A detailed site assessment can often identify alternative design and positioning solutions that still achieve the desired outcome.
4. Is the Block Relatively Flat?
Site fall can significantly influence construction costs.
A relatively flat site generally allows for:
Steeper blocks can still accommodate a secondary dwelling, but additional engineering, retaining walls and site works may be required.
This is why a feature and level survey forms part of Orlando Homes’ due diligence process.
5. Are There Significant Trees on the Site?
Large established trees can affect:
In some cases, tree protection requirements may influence the design and placement of the dwelling.
A professional assessment helps identify these considerations before plans are finalised.
6. Is There Suitable Construction Access?
One of the most overlooked site assessment factors is access.
Builders require access for:
Limited side access doesn’t necessarily prevent a project from proceeding, but it can affect construction methodology and overall costs.
At Orlando Homes, we assess access requirements early to ensure the site can be built efficiently.
7. Are There Any Covenants or Title Restrictions?
Some properties contain restrictions that can impact development.
These may include:
A title review forms an important part of determining whether a site is suitable for a secondary dwelling.
8. Are There Any Planning Overlays?
Although recent planning reforms have simplified the approval process for many secondary dwellings, some properties remain subject to planning controls.
These may include:
Every property should be assessed individually to determine whether any additional approvals may be required.
This is one of the reasons a professional site assessment is important before committing to a design or budget.
9. What Are Your Goals for the Secondary Dwelling?
The most suitable design often depends on how the dwelling will be used.
Common reasons homeowners build granny flats include:
Understanding your objectives helps determine the most appropriate floor plan, design and site layout.
10. Is Your Property Located in a High-Opportunity Area?
While secondary dwelling opportunities exist throughout Melbourne, some municipalities contain a particularly high concentration of properties that may be suitable for a granny flat.
Areas including Frankston, Mornington Peninsula, Casey, Monash, Knox and Manningham have been identified as strong opportunity markets due to the prevalence of larger residential lots and established housing stock.
However, suitability is determined on a property-by-property basis. Factors such as access, available backyard space, services, easements and site constraints often have a greater impact on feasibility than the council area itself.
At Orlando Homes, we regularly assess properties across Melbourne and often find opportunities on sites that homeowners initially assumed would not be suitable.
Frequently Asked Questions
Do I need a planning permit to build a granny flat in Victoria?
Recent Victorian planning reforms have made it easier for many property owners to build a small second dwelling. However, site-specific constraints such as overlays, easements and title restrictions may still influence approval requirements.
How much land do I need for a granny flat?
There is no single minimum lot size that guarantees suitability. Factors such as access, existing dwelling location, services and site constraints are often more important than the total land area.
Can I rent out a granny flat?
Yes. Many homeowners build secondary dwellings specifically to create an additional rental income stream while retaining ownership of their property.
One of our current clients on the Mornington Peninsula is building a secondary dwelling with the intention of renting it out, creating a second income stream from their existing property without the need to purchase another investment asset.
How much does a granny flat site assessment cost?
Understanding whether your property is suitable for a secondary dwelling is the first step in the process. Orlando Homes offers a complimentary initial site assessment to help homeowners understand potential opportunities, site constraints and suitable design options before progressing further.
How do I know if my block is suitable?
The most reliable way to determine suitability is through a professional site assessment that reviews services, access, title information, overlays and physical site conditions.
Discover What’s Possible on Your Property
Every site is different.
While many Melbourne properties have the potential to accommodate a secondary dwelling, understanding the opportunities and constraints of your specific block is the first step.
Whether you’re located in Frankston, Mount Eliza, Mornington, Berwick, Endeavour Hills or elsewhere across Southeast Melbourne, a professional site assessment can help determine whether a secondary dwelling is possible on your property.
If you’re considering building a granny flat in Melbourne and would like to understand what’s possible on your block, contact Orlando Homes to arrange a complimentary site assessment and initial estimate. Our team can help you understand site suitability, potential construction costs, available design options, rental income opportunities and the next steps required to bring your project to life
