Expand your living space upward with expertly designed first-floor extensions tailored to your home, lifestyle, and future plans, delivering comfort, functionality, and value without compromising your property’s existing footprint, neighbourhood character, or planning compliance.

STH Projects manages every stage, from concept and approvals to construction and completion, ensuring transparent communication, premium workmanship, and strict compliance with Australian building standards across Sydney’s most sought-after residential suburbs and surrounding growth areas.

A first floor extension is ideal for growing families, professionals working from home, or homeowners seeking smarter space solutions. By building upward, you preserve outdoor areas while gaining bedrooms, bathrooms, or private retreats. Our experienced team delivers structurally sound designs that integrate seamlessly with your existing home, respecting council requirements and neighbourhood character. The result is a beautifully finished upper level that enhances comfort, boosts property value, and future-proofs your lifestyle for years to come.