How much does it cost to raise a house and build underneath Brisbane?

Introduction

If you're a Brisbane homeowner considering how to unlock more space without leaving your neighbourhood, raising your home and building underneath could be the solution. With land becoming increasingly scarce and flood zones shaping the way we build, this renovation strategy offers a way to stay where you are and create the space you need.

In this guide, we break down what it costs in 2025 to raise and build underneath a house in Brisbane, what factors influence pricing, and why this type of project has become so popular in Queensland’s capital.

Why Raise and Build Under in Brisbane?

Raising and building under a home is especially popular in Brisbane due to:

• Flood-prone zoning
  
• Limited land sizes
  
• High-set Queenslander housing stock
  
• Desire to retain character homes while increasing space
  

It’s an ideal solution for families who want to stay in the area but need more space or want to future-proof their home.

2025 Cost to Raise and Build Underneath

In 2025, a full raise and build-under project in Brisbane might start from approximately $650,000, with many projects reaching $800,000+ depending on site complexity, finish level, and builder.

This pricing reflects:

• A basic lift and reposition (shift if needed)
  
• Full excavation or subfloor works
  
• A complete fit-out underneath (bedrooms, bathroom, living area)
  
• Structural steel, services relocation, and council approvals
  

Standalone house raising (without building in underneath) might start from approximately $30,000 to $60,000, but the bulk of the cost typically lies in the construction and compliance stages.

Please note: These figures are general estimates intended as a guide. Actual project costs may vary depending on your site conditions, design choices, approval requirements, and scope of works.

Factors that influence cost to raise and build underneath

Several variables impact the final cost:

• Access and slope: Difficult access increases excavation and logistics cost.
  
• Size of the home: Larger footprints need more structural support.
  
• Finish level: Custom joinery, flooring, and bathroom inclusions push costs up.
  
• Compliance requirements: Character overlays, flood mapping, and small-lot code may require extra planning and design work.‍
• Service upgrades: Moving plumbing, power, or installing internal stairs adds to the budget.

Council Approvals and Compliance

Raising and building under in Brisbane typically requires:

• Building approval from a private certifier
  
• Planning approval, depending on zoning, overlays, and setbacks
  
• Structural engineering certification
• Flood and character code compliance if applicable
  

Refer to the Brisbane City Council Building Guidelines for full detail.

Working with an experienced local builder means these approvals are usually handled as part of a full-service design and construct contract.

Is It Worth the Investment?

For many Brisbane homeowners, the answer is yes if:

• You plan to stay long-term
  
• The land value is strong and makes building up worthwhile
  
• You need dual living, rental income, or future-proofing
  
• You want to preserve the existing home without demolishing
  

Done well, it can significantly increase usable space and resale value.

Choosing the Right Builder

Not all builders are equipped for raise-and-build projects. Look for:

• Brisbane-based specialists in home raising and renovation
  
• Proven track record with flood zones and character homes
  
• End-to-end design and construct capabilities
  

Read more here: The Ultimate Guide to Choosing the Right Builder for Your Renovation in Brisbane

Conclusion

Raising and building underneath your Brisbane home is a significant but rewarding investment. With costs starting at $650,000 in 2025, it’s crucial to partner with the right builder who understands Brisbane’s regulations, terrain, and building styles.

At Abode Construction, we specialise in custom raise-and-build projects that maximise space, value, and liveability.

Thinking of lifting your home?
Contact us for a free discovery call and we’ll help you plan it right from the start.