We Expand Homes & Enhance Lives
We specialise in second storey additions, helping families create more space without giving up the home and neighbourhood they love. Based in Sydney’s north-west, we bring over 30 years of experience, a passion for craftsmanship, and a genuine commitment to making your renovation journey smooth, transparent, and rewarding.
Why Choose Us?
Built on Over 30 Years of Experience
A second storey adds an entirely new dimension to your home, opening up a world of opportunity to accommodate for your lifestyle. Here’s why people choose Keystone to complete their second storey addition.
Built On Time & Budget
We’re committed on completing your build on time and within budget.
Stay Home While We Build
Most clients stay in their homes during construction, no need to pay for rent or storage.
Disruption Kept to a Minimum
We keep noise, mess, & intrusion low, cleaning up daily and protecting your living space.
Customer-First Approach
We design with your lifestyle in mind and keep you involved every step of the way.
No Hidden Costs
Clear, detailed pricing in your contract—no surprises or unexpected charges.
Trusted Family Business
We’ve delivered quality second storey additions since 1997 with honesty and care.
Our team
We’re a tight-knit crew of qualified builders, carpenters, and project managers who take pride in every job. Whoever you’re talking with, our site team, or our admin staff, you’ll find a friendly, professional face ready to help.
With over 20 years of experience in the building industry Ralph loves making his customers homes work for them. When he’s not working, he enjoys time at home shared between maintaining his property and family.
Over 17 years Steve has been part of many success stories with Keystone. When he’s not working hard making customers happy he enjoys camping, fishing and most water sports. Steve will never say no to a coffee.
Start Your Home Transformation
Your first consultation and quote are on us!
