Subfloor and Basement Extensions, Renovations and Excavations in Sydney and Wollongong

Geotech Built Restumping, Underpinning & Foundations in Sydney

Unlock More Space Under Your Home: Specialist Subfloor Excavations

Cost-Effective Pricing and Honest Service

Serving Sydney, Wollongong, Central Coast & Beyond

3 Generations & 30+ Years’ Experience

Innovative Subfloor Excavations to Deliver Top Results Most Efficiently

4.8 ★★★★★ Google Rating (40+ Reviews

Enquire Today and Experience Our Difference

With a legacy spanning over 30 years and three generations, Geotech Built stands out as a trusted leader in subfloor extension and excavation in Sydney, Wollongong and beyond. Our deep-rooted experience and innovative techniques enable us to tackle even the most complex projects with precision and care. 

Whether you envision a luxurious wine cellar, a cosy man cave basement, an expansive family room, a state-of-the-art gymnasium, a functional underground office, or a perfect retreat for your teenagers, we can look to bring your dream spaces to life beneath your home. Our dedication to excellence ensures that every project we undertake enhances your home’s value and functionality.

Workers wearing hard hats in a building site excavation. Shot with Canon 1Ds Mark 2

Expand The subfloor Space Under Your Home with Confidence and Expertise

Our highly-specialised team at Geotech Built excels in strengthening foundations and creating new, vibrant spaces under your property. We meticulously manage all aspects of subfloor extensions, from the initial excavation to the final construction phases. This comprehensive approach ensures a seamless and robust foundation, allowing your new rooms to stand the test of time.

We understand that expanding your home is a significant investment, and our goal is to provide you with not only additional space but also peace of mind through our expert craftsmanship and attention to detail.

Decades of Experience and Fully Licensed and Insured for Your Peace of Mind

At Geotech Built, we prioritise your safety and satisfaction above all. All our services are fully insured and backed by comprehensive liability coverage, guaranteeing that your home is in safe hands. Our commitment to quality and adherence to stringent NSW safety standards mean that every project is executed with precision and care. We believe in transparent communication and meticulous planning, ensuring that you are informed and comfortable with every step of the process. Trust in our hard-won reputation for delivering top-tier results that consistently exceed expectations for our customers across the greater Sydney region, including Wollongong, Illawarra and surrounding regions.

Subfloor Excavation and Renovation Services in Sydney

Why Choose Geotech Built for Your Subfloor Extension or Renovation?

Proven Expertise: Our extensive experience, spanning over three decades, equips us with unparalleled knowledge and skills, making us the preferred choice for subfloor extensions in Sydney and the Illawarra.

Tailored Solutions: Every extension project is uniquely customised to fit your specific needs and vision, ensuring that your new space perfectly complements your lifestyle and home design.

Full-Service Approach: From the initial consultation to the final completion, we manage every aspect of your subfloor extension project, providing you with a seamless and stress-free experience.

Get Started on Your Dream Basement or Subfloor Renovation Today

Don’t let subfloor issues or limited space hinder your home’s potential. Contact Geotech Built today so we can look at your subfloor, under house or basement extension project together and explore the possibilities.

What are You Waiting for?

Our dedicated team is ready to transform your vision into reality, delivering unmatched foundation repair, underpinning and extension services throughout the Sydney and Wollongong areas. With Geotech Built, you can trust that your home will receive the highest standard of care and craftsmanship. Visit our homepage to learn more about our services or click here to see examples of our successful projects. Let us help you enhance your home’s value, functionality, and aesthetic appeal with our expert subfloor extension services.

Our Results Speak for Themselves