Renovations
Add second storey addition that blend beautifully with your existing home and lifestyle while saving yard space.

Modernise and Refresh
Give your home a fresh new look with updated materials, colours and finishes that match your current taste and lifestyle..
Improve Functionality
Redesign your layout to serve your everyday needs better. Create more open space, better flow, or smarter storage.
Cost-Effective Alternative
Renovating can help you achieve the home you want without the costs of relocating or starting from scratch.
Boost Property Value
Well-planned renovations increase your home’s market appeal and resale value, especially in high-impact areas like kitchens and bathrooms.
Reimagine Your Home
You don’t always need to move or build new to get the home you want. Whether you're dealing with outdated interiors, underused spaces, or shifting lifestyle needs — a smart renovation can completely transform how your home looks, feels, and functions.
Thinking about updating your layout?
Want to modernise tired finishes?
Ready to align your home with your lifestyle?
Before & After
Your Home, Transformed
Renovating isn’t just about looks. It’s about living better every day.


"To all the team at Keystone, a very big (and very belated) thank you for the wonderful job you all did on our house. It’s just like a new home and suits our bigger family perfectly and as for the timing it was just perfect. Thank you once again we will happily recommend you to family and friends."
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 Refined Process
Our Happy Customers

Who We Are
Keystone Building is a trusted local builder specialising in home renovations in Penrith and surrounding Western Sydney suburbs. We transform outdated spaces into modern, functional, and stylish areas that suit your lifestyle. From kitchens and bathrooms to full home makeovers, our experienced team ensures every renovation is delivered on time, on budget, and to the highest standard.
We believe that every home has potential. Our team works closely with clients to understand their vision, lifestyle needs, and budget, creating bespoke renovation solutions that enhance both functionality and aesthetic appeal. By combining innovative design, quality materials, and expert craftsmanship, we turn your renovation dreams into reality.
How We Can Help
We offer comprehensive renovation services, including:
Kitchen & Bathroom Renovations: Modern upgrades tailored to your style and needs.
Open-Plan Living: Transform your layout for better flow and usability.
Outdoor Enhancements: Patios, alfresco areas, and landscaping improvements.
Full Home Makeovers: From single-room upgrades to complete home transformations.
Design & Planning: We handle concept creation, council approvals, and project management.
Our goal is to create homes that are functional, beautiful, and increase in value. Whether you want a minor upgrade or a full-scale renovation, Keystone Building is your trusted partner for home renovations in Penrith and surrounding areas.


Why Choose Us
Local Knowledge: Experienced in kitchen renovations Sydney and broader Western Sydney homes, we understand the local requirements and design trends.
Quality Craftsmanship: Every renovation is completed with attention to detail and superior workmanship.
Transparent Pricing: We provide clear, detailed quotes with no hidden costs.
Personalised Service: We collaborate with you from initial concept through to project completion.
Reliable Timelines: Projects are delivered efficiently without compromising quality.
Frequently asked questions
We specialise in various home renovations, including:
-Kitchen and bathroom upgrades
-Open-plan living transformations
-Storage and layout improvements
-Outdoor area enhancements
-Full home makeovers
Most clients remain in their homes during the renovation. We minimise disruption by keeping noise and mess to a minimum, cleaning up daily, and protecting your living space.
Yes. Our designs are tailored to complement your current home's style and structure, ensuring a cohesive look and feel.
Renovations can:
-Modernise outdated interiors
-Enhance functionality and flow
-Increase property value
-Align your home with your current lifestyle
Project timelines vary based on scope and complexity. After the design phase and obtaining necessary approvals, we provide a clear schedule outlining key milestones and completion dates.
Begin with a free introductory session to discuss your ideas, budget, and goals. This is followed by a design consultation, concept planning, and obtaining necessary approvals before construction begins.