Second Storey Extensions in the Blue Mountains
Expand Your Space Without Expanding Your Footprint

Take Your Home to New Heights
A second storey extension is the perfect way to increase your home’s size without using up valuable space on your block. Whether you’re looking to add bedrooms, a home office, or a second living area, Brownjohn Constructions can help you create a space that fits your lifestyle and enhances the functionality of your home.
As trusted home extension builders in the Blue Mountains and Penrith, we work with you to bring your vision to life. Whether you already have plans drawn up or need help with the design process, we’re here to make the journey seamless and stress-free.
With Brownjohn Constructions, you can expand your home while preserving its character and style—leaving you with a space you’ll be proud to call your own.
Perfectly Designed First Floor Additions

Custom Design Assistance

Build to Existing Plans
Our Featured Projects



Why Choose Us for Your Second Storey Extension?

Collaborative Design Process
Whether you have plans or need guidance, we ensure your second storey addition meets your vision and complies with regulations.

Maximise Your Block
Expand upwards without increasing your footprint, ideal for properties with limited space or council restrictions.

Enhance Your Views
Enjoy the opportunity to capture breathtaking Blue Mountains views with your second storey addition.

Transparent Pricing
Clear estimates and detailed cost breakdowns to keep you informed every step of the way.

Trusted Local Suppliers
Access quality materials and trade discounts through our strong supplier relationships.

Exceptional Craftsmanship
We take pride in delivering high-quality results that stand the test of time.