Design & Construct - Gemini Building and Construction

Second story extensions in Perth

At Gemini Building and Construction, we specialise in design and construct second storey extensions—and we firmly believe that bringing us on board from the beginning is the smartest choice for your renovation journey.

TALK TO US BEFORE YOU APPOINT AN ARCHITECT

By engaging us from the outset, you gain a complete design and construction partner who understands both the creative vision and the practical, on-site requirements needed to bring it to life—on time and on budget.

The Gemini Advantage:

Design & Construction Done Right

Budget control from day one

Because we build what we design, we’re uniquely positioned to guide the design process with real-world construction costs in mind. That means:

No unexpected cost blowouts
Designs tailored to your budget
Smarter material and structural decisions

Faster Project Delivery

We streamline the process from concept to completion. Our integrated approach reduces:

Delays between design and construction
Time lost on redesigns due to impractical or over-budget plans
Overall project timelines

Buildable Designs with Fewer Surprises

We know what works in second storey construction. We collaborate closely with engineers and designers to ensure every detail supports how we like to build—efficiently, safely, and in compliance with local codes.

Clearer Communication, Single Point of Contact

Instead of juggling communication between an architect, builder, and engineer, you deal with one team—us. This reduces miscommunication, delays, and stress.

Tailored Second Storey Specialists

Second storey additions are complex. Our expertise allows us to:

Minimise disruption to your existing home
Engineer structural solutions that work with your current footprint
Deliver seamless upstairs/downstairs integration in design and function

Value Engineering Without Compromising Quality

Because we understand construction, we can identify opportunities to:

Save money without cutting corners
Use materials and methods that offer better durability and performance
Maximise value while still delivering a high-quality finish

Start With Gemini. Start Smart.

Ready to build up?

When you partner with Gemini Building and Construction for your second storey extension, you’re not just getting a builder—you’re getting a team that can take you from vision to reality with more confidence, less risk, and a smoother process.