House Extensions Perth
If you need more space to suit your growing family or changing lifestyle, Prime Builds & Renovations is a licensed Perth builder specialising in well-planned, structurally sound home extensions across the Perth metropolitan area.
Whether you’re adding a new bedroom, expanding your living area, or undertaking a rear or second storey extension, we ensure the new addition integrates naturally with your existing home.
Designed to Suit Your Home
A successful extension should feel like it was always part of the original structure. We carefully consider layout, rooflines, materials, and finishes to ensure a cohesive result that enhances both function and value.
Our extension process
We manage the entire process, including:
- Design coordination
- Engineering and structural requirements
- Council approvals
- Construction and trade management
- Quality control and final finishes
Our structured approach ensures your extension is delivered with clear timelines, realistic budgeting, and consistent communication throughout.
Why Build Your Extension with Prime Builds & renovations?
- Licensed Perth builder
- 10+ years of industry experience
- Experienced in structural alterations
- Strong network of trusted trades
- Transparent and professionally managed builds
Frequently Asked Questions:
How much does a home extension cost in Perth?
The cost of a home extension depends on the size, structural requirements, site access, and level of finishes selected. A single-room addition differs significantly from a large rear or second-storey extension. During the planning stage, we provide a detailed scope of works and realistic budgeting so you clearly understand what is included before construction begins.
Do I need council approval for a house extension?
Most home extensions require council approval, along with architectural drawings and, in some cases, engineering documentation. Before construction can begin, detailed plans must be prepared and submitted for approval.
If you don’t already have drawings, we can coordinate with trusted architects and designers to prepare the required documentation. As a licensed Perth builder, we manage this process to ensure your extension complies with local regulations and building standards before work begins.
Can you match the new extension to my existing home?
Yes. A successful extension should feel like it was always part of the original structure. We carefully consider layout, rooflines, ceiling heights, materials, and finishes to ensure the new addition integrates seamlessly with your existing home.
How long does a home extension take to complete?
Timeframes vary depending on the size and complexity of the project. Smaller ground-floor extensions may take several months, while larger or second-storey additions require more detailed structural work and staged construction. We provide a clear timeline during the planning phase so expectations are aligned from the start.
Can I live in my home during the extension?
In many cases, homeowners can remain in the property during construction, depending on the scope of works and site access. We discuss staging options and site management strategies during planning to minimise disruption wherever possible.
Are you experienced in structural alterations?
Yes. Extensions often involve structural modifications, including new footings, load-bearing wall removals, and beam installations. Prime Builds & Renovations is experienced in structural work and coordinates engineering where required to ensure safety, compliance, and long-term integrity.
Do you manage the entire project?
Yes. We provide complete project management — from design coordination and approvals through to construction, trade scheduling, and final finishes. Our structured approach ensures clear communication, professional oversight, and a well-managed build from start to finish.
Ready to Extend Your Home?
If you’re considering an extension, contact us to arrange a consultation and discuss the best approach for your property.
Your space. Our prime priority.

