Ground Floor Additions Campbelltown – Reliable Builders for Single-Storey Extensions
Who We Are
Here at Keystone Building, we help families with ground-floor additions in Campbelltown. We know moving house can be expensive and stressful, so we help you expand your current home instead. Do you need a bigger kitchen, more living space, or an extra bathroom? Our team designs practical single-storey extensions tailored to your family's needs.
We've been building in Western Sydney for over 20 years. During that time, we've completed hundreds of residential ground-floor additions and house expansions. We handle each project with care and keep you informed every step of the way. We also work hard to minimise disruptions. Our licensed builders take care of everything - council approvals, design work, and coordinating all the trades.
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 Building has been assisting Western Sydney families with ground-floor home renovations and extensions for years.
- ✅ Family business with 20+ years local building experience
- ✅ We focus on single-storey house additions and structural changes
- ✅ Clear, fixed-price quotes with no surprise costs
- ✅ Licensed builders who know the local area well
- ✅ We manage everything from design and drafting to approvals
Our Process
We follow a clear process to ensure every project runs smoothly and stays on budget.
- Free Consultation – We meet with you and give you a cost estimate with no obligation
- Design & Drafting – We prepare plans that work for your property
- Council Approvals – Our team handles all the paperwork you need
- Fixed-Price Contract – Clear costs and build a timeline that we guarantee
- Construction – Licensed trades complete your ground-floor home renovations while keeping disruption low
- Final Handover – We do a full inspection and walk through everything with you before we finish
This approach provides you with confidence from start to finish.
Our Service Locations
We do ground-floor additions in Campbelltown and across Western Sydney. We are familiar with the local councils, allowing us to handle approvals and builds efficiently.
Service Areas: Campbelltown, Kellyville, Castle Hill, Baulkham Hills, Rouse Hill, Glenhaven, West Pennant Hills, Dural, Cherrybrook, Bella Vista, North Rocks.
