Choosing the right block of land is the most critical first step to ensuring your portable home project is a success. This guide provides a complete checklist for your due diligence, covering everything from online research and site inspections to council rules and hidden costs, helping you invest with confidence.
How Do You Choose the Right Land?
Selecting land for a portable home requires a 4-step process: Desktop Due Diligence (zoning/utilities), On-Site Inspection (slope/access), Engaging Experts (surveyors/soil tests), and a Final Pre-Purchase Contract Review.
In this guide, we cover:
- Step 1: The Desktop Due Diligence (Before You Visit)
- Step 2: The On-Site Inspection (Your Physical Checklist)
- Step 3: Engaging the Experts (Professional Reports)
- Step 4: The Final Pre-Purchase Review & Budgeting
From our experience, understanding these details before you buy is the key to a smooth, cost-effective build. The orientation of your home is just one crucial factor, a topic we explain in our Residential & Commercial Block Facing Guide.
As specialists in delivering portable homes across Queensland, we have created this guide to share our proven process with you. To see how our homes fit on any block, explore our Ultimate Australian Granny Flat Handbook.
Step 1: The Desktop Due Diligence (Before You Visit the Land)
From our experience, the most critical work you can do happens before you even set foot on a potential block of land. Performing thorough research from your computer is the key to quickly eliminating unsuitable properties, saving you immense time, travel, and potential heartache. This is your foundational check.
Mastering Your Local Council’s Online Mapping Tools
Every local council in Queensland, such as the Brisbane City Council or Moreton Bay Regional Council, has a free online interactive mapping tool. These are your most powerful initial research assets. Before anything else, you need to check two dealbreaker items for the property you are considering:
- Zoning: Ensure the land is zoned appropriately, for example ‘Rural Residential’ or ‘Low-density Residential’. This confirms a dwelling is permitted.
- Overlays: Look for any potential restrictions like Flood, Bushfire, or Biodiversity overlays, as these can add significant costs and requirements to your build. The rules for these are complex, as we detail in our 2025 Granny Flat Step by Step State Council Guide.
Verifying Utility & Service Availability
A beautiful block is useless without essential services. Your next step is to verify what is available at the property boundary, as the cost to run these services to your home site can be substantial.
- Power: Check the Energex website for service maps to confirm there is power on the street. Note the distance from the pole to your proposed home site, as this will determine trenching costs.
- Water & Sewerage: For urban blocks, check with Queensland Urban Utilities (QUU). For rural land, you must budget for a rainwater tank and a Home Sewage Treatment Plant (HSTP).
- Telecommunications: Do not assume you can get good internet. Check the specific address on the NBN Co website to see what technology is available.
Uncovering Hidden Site History
Finally, use free online tools to look for potential issues that may not be obvious on the ground. A critical safety requirement is to identify any existing underground pipes or cables, a process outlined in the Workplace Health and Safety Queensland code of practice.
Using Google Maps can also reveal details about the block’s history and the severity of the slope, a challenge we discuss in our guide to building on a sloping block.
Step 2: The On-Site Inspection (Your Physical Checklist)
Once your desktop research checks out, it is time to visit the property. This on-site inspection is where you move from theory to reality. Your goal is to assess the physical characteristics of the land through the specific lens of a portable home installation, identifying opportunities and potential costs that maps cannot show you.
The Most Critical Check: Site Access for Delivery
From our 20+ years of experience, this is the single most overlooked and critical check. A portable home arrives on a large semi-trailer and is often positioned with a crane. If the truck cannot get to the site, the project cannot proceed. Check the entire access route from the main road for road width, gate clearances (we need at least 4 metres), sharp turns, and low hanging power lines or tree branches. For a dedicated guide detailing the entire delivery process, see What to Expect During Your Portable Home Delivery.
Your On-Site Access Checklist:
- Is the road leading to the property wide enough for a large truck?
- Is the property gate at least 4 metres wide?
- Are there any sharp turns, low-hanging power lines, or thick tree branches that could obstruct entry?
Assessing the Proposed Building Envelope
Walk to the exact area where you envision the house sitting. Is this ‘building envelope’ relatively flat? Look for major obstacles like large rocks or established trees that may need costly removal. Check the ground condition. Is it firm, or does it seem unusually soft or waterlogged, which could indicate drainage problems?
Evaluating the Land’s Slope and Gradient
Assess the steepness of the slope across the entire building envelope. A gentle slope might only require standard adjustable footings, while a steep slope will need a more complex and expensive engineered solution. We cover the specific challenges in our guide to Sloping Block Challenges and Portable Homes in QLD.
Identifying Vegetation and Clearing Requirements
Identify all significant trees within and around the building envelope. Large trees may be protected by the local council and require an arborist report before removal, which is a significant cost. Furthermore, the type and proximity of vegetation directly impacts your Bushfire Attack Level (BAL) rating.
Checking Solar Aspect and Sun Facing
The direction the block faces (“solar aspect”) is crucial for energy efficiency and lifestyle. During your on-site inspection, use a compass on your phone to determine which way is north. For a home in Queensland, a north-facing aspect for your main living areas and outdoor spaces is ideal to capture winter sun and avoid the harsh summer afternoon sun. This is a topic we cover in-depth in our Residential & Commercial Block Facing Guide.
Step 3: Engaging the Experts (Your Professional Checklist)
While your own research is vital, some critical information can only be confirmed by licensed professionals. Engaging experts for key reports before you buy is a non-negotiable step to protect your investment.
Commissioning a Site Survey
A registered surveyor provides the official map of your property, which is essential for all planning. This professional report gives you certainty on the exact boundaries, any easements (areas you cannot build on), and a detailed contour survey that maps the slope of the land.
- What they do: A surveyor will officially mark your property boundaries.
- Key output: They produce a detailed contour survey mapping the slope.
- Why it matters: We use this survey for precise site planning.
The Importance of a Geotechnical Soil Test
A geotechnical engineer tests the ground itself to ensure the foundations for your home are engineered correctly. The report identifies the soil’s stability and provides a classification (e.g., ‘S’ for stable or ‘H1’ for highly reactive). This is vital because a ‘highly reactive’ soil classification will require more expensive foundations to ensure long-term stability.
Consulting with a Town Planner or Building Certifier
Town Planners help you navigate the planning scheme, while Private Certifiers issue the final Building Approval (BA). All certifiers are licensed by the QBCC, and state rules are detailed in our 2025 Granny Flat Step by Step State Council Guide.
Step 4: The Final Pre-Purchase Review
You have now completed your due diligence and gathered all the critical information. This final step is about bringing everything together to make a clear, confident, and financially sound decision before you sign a contract to purchase the land.
Calculating Your “Site Works” Budget
Before you can be sure a block is affordable, you must calculate a realistic budget for all site preparation works. From our experience, this is the most common area for unexpected costs. Your budget should include preliminary quotes for earthworks, retaining walls, driveways, and utility connections. We explain the financial side of building in more detail in our guide, Granny Flats: Your Guide to Financial & Living Gains.
Reviewing the Land Purchase Contract
Before signing, ensure the purchase contract includes clauses that protect you from unforeseen issues discovered during your due diligence, such as “subject to satisfactory soil test and survey.” The Queensland Law Society can help you find a qualified property lawyer to assist with this.
The Final Sanity Check
Finally, step back and review the big picture. Is the total cost feasible? Does the location fit your lifestyle? This is the perfect time to bring your complete findings to us. We can review your reports and provide a realistic estimate for our part of the project. See our options on our custom builds service page.
Frequently Asked Questions
Choosing the right land is a critical step with many questions. From our 20+ years of experience delivering homes across Queensland, we have compiled clear, trustworthy answers to the most common queries we receive from property buyers.
How much does it cost to prepare land for a portable home in 2025?
Site preparation costs in Queensland can vary widely, from a few thousand dollars to over $50,000, depending entirely on the block’s condition. The biggest cost factors are the steepness of the slope and the distance from the home to the street’s utility connection points.
Can you put a portable home on a sloping block of land?
Yes, absolutely. We regularly install homes on sloping blocks. The key is that it requires a more complex footing system, such as adjustable steel stumps. A professional contour survey is essential to engineer this correctly, as covered in our guide to building on a sloping block.
What is the difference between a soil test and a site survey?
A site survey is conducted by a surveyor to map the land’s boundaries, features, and contours (the slope). A soil test is done by a geotechnical engineer to analyze the ground itself to determine its stability and reactivity.
Do I need a Development Application (DA) for a portable home?
It depends on your local council’s planning scheme. While a Building Approval (BA) is always required, a DA may also be needed depending on the property’s zoning and any overlays. We provide a breakdown in our 2025 Granny Flat Step by Step State Council Guide.
What is the most common mistake people make when choosing land?
From our experience, the most common mistake is underestimating site access. People find a beautiful block but fail to consider if a large delivery truck and crane can physically get to the build site, a key part of our Step-by-Step Guide to Building Portable Homes in QLD.
Conclusion
Choosing the right land is the foundation of a successful portable home project. This guide has provided a comprehensive checklist covering desktop research, on-site inspections, and professional due diligence, allowing you to invest with confidence. Once you have secured your block, the next phase begins. Learn about our proven process in our Step-by-Step Guide to Building Portable Homes in QLD.
Ready to discuss your project?
Contact our expert team today to review your block.
Contact Elite Portables
