Ground Floor Additions Emu Plains - Local Builders You Can Trust
Who We Are
We are a family business with 20 years of experience in home extensions, renovations, and custom additions. We work near Emu Plains and know the local council rules and house styles in Western Sydney. This makes us the right choice for your home expansion.
Preserve Outdoor Space
Build vertically to maintain your backyard, garden, or pool area— ideal for smaller blocks.
Add Views and Light
Second levels can open up elevated outlooks and bring in more sunlight, enhancing both value and lifestyle.
Get More Privacy
Create spacious master suites or quiet study areas completely separated from the main living zone.
Boost Property Value
Second storey additions are a strong investment, often delivering a higher return by substantially increasing usable floor area.
Why Us?
Keystone delivers reliable, local building expertise. Here's why Emu Plains homeowners choose us:
- Over 20 years' experience in home extensions and renovations
- Family business, based in Penrith and trusted across Western Sydney
- Transparent, set pricing with no hidden costs
- Stay in your home while we build
- One person to talk to from start to finish
More on why people trust Keystone.

Expand Your Home Without Moving
Keystone Home Additions makes it simple to create the extra space you need with our ground floor additions in Emu Plains. Whether it’s a new bedroom, a spacious living area, or a larger kitchen, we design and build extensions that blend seamlessly with your existing home. This means your new space looks like it was always meant to be there — perfectly matched to your style and needs.
By staying on one level, you can enjoy improved accessibility and a layout that works for the whole family. We take care of everything from council approvals to the final finish, making your home expansion stress-free and rewarding.
Tailored Designs for Your Lifestyle
Every family’s needs are different, which is why our home extensions in Emu Plains are custom-designed to suit you. Whether you want an open-plan living space for entertaining, a private retreat for guests, or a larger dining area, we work with you to create a plan that fits your lifestyle perfectly.
We use high-quality materials, precise construction methods, and experienced tradespeople to ensure your extension is built to last. The result is a home addition that not only gives you more space but also increases your property’s comfort, functionality, and market value.


More Space, More Comfort, More Value
With our single-storey extensions in Emu Plains, you can avoid the hassle and cost of moving while still gaining the extra room you’ve been dreaming of. We create additions that feel natural, complement your existing home, and meet your practical needs — all while boosting your home’s value.
Our process is transparent, efficient, and focused on quality. From the initial consultation to the final handover, we’re committed to delivering a space that enhances your lifestyle and makes every day at home more enjoyable.