Modern composite timber deck with black metal pergola and brick home extension

Transform Your Home with Professional Upper Floor Extensions

Add space, value, and lifestyle to your Sutherland Shire home with custom-designed second storey additions from Curtis Construction

Expert Upper Floor Extensions in Sydney's South

Since 1999, Curtis Construction has been transforming homes across the Sutherland Shire with thoughtfully designed upper floor extensions. Our qualified builders and carpenters specialise in creating seamless second storey additions that enhance your lifestyle whilst maximising property value. From initial design consultation through to final completion, we deliver personalised service and exceptional craftsmanship that stands the test of time.

Why Choose Curtis Construction for Your Extension?

Over two decades of building excellence in the Sutherland Shire has established Curtis Construction as the trusted choice for upper floor extensions. Our comprehensive approach and attention to detail deliver exceptional results.

25+ Years

Building experience since 1999

In-House Team

Qualified carpenters, tilers, and apprentices

Licensed & Insured

Fully qualified builder and carpenter

Personal Service

Founder involvement from start to finish

Local Knowledge

Sutherland Shire building specialists

One-Stop Solution

Complete renovation and extension services

Modern bathroom with cream vessel sink, bronze tap, grey tiles, and frameless glass shower enclosure

Strategic Design and Planning

Upper floor extensions require careful consideration of structural integrity, council regulations, and architectural harmony. Our experienced team works closely with engineers and architects to ensure your extension complements your existing home whilst meeting all building codes and planning requirements. We specialise in creating designs that maximise natural light, ventilation, and usable space. From contemporary open-plan living areas to traditional bedroom suites, we tailor each extension to suit your family's specific needs and lifestyle preferences. Our comprehensive planning process includes detailed site assessments, soil testing, and neighbour consultations to ensure a smooth approval process and successful construction outcome.

Modern bathroom with grey tile walls, white vanity, black tap, and frameless glass shower enclosure

Premium Materials and Construction Techniques

Quality construction begins with selecting the right materials and employing proven building techniques. We source premium timber, steel, and finishing materials from trusted Australian suppliers, ensuring durability and longevity for your upper floor extension. Our skilled carpenters and builders utilise modern construction methods combined with traditional craftsmanship principles. Every project incorporates proper insulation, waterproofing, and structural support systems designed to withstand Sydney's climate conditions. We pay particular attention to seamless integration with existing rooflines, external cladding, and architectural features, creating extensions that appear as original parts of your home rather than obvious additions.

Modern bathroom with dual vanities, natural stone finishes, and floor-to-ceiling windows overlooking gardens

Energy Efficiency and Modern Living

Today's upper floor extensions must balance comfort, functionality, and environmental responsibility. Our designs incorporate energy-efficient windows, insulation systems, and ventilation solutions that reduce heating and cooling costs whilst maintaining year-round comfort. We specialise in creating light-filled spaces that connect seamlessly with outdoor living areas. Modern families require flexible living spaces that adapt to changing needs. Our extensions feature thoughtful storage solutions, integrated technology provisions, and multi-purpose areas that enhance daily living. Whether you need additional bedrooms, home offices, or entertainment spaces, we design extensions that grow with your lifestyle and add substantial value to your property investment.

Modern stairwell with dark textured carpet, timber handrail, and recessed lighting in contemporary home

Upper Floor Extension Benefits and Outcomes

Upper floor extensions represent one of the most effective ways to increase your home's living space and market value without relocating. Unlike ground floor extensions that reduce outdoor space, second storey additions maximise your existing land footprint whilst creating elevated living areas with enhanced views and privacy.

Our clients consistently report improved lifestyle outcomes, including better family dynamics through additional private spaces, increased property values that exceed construction costs, and the satisfaction of creating their dream home without the stress of moving suburbs or schools.

The strategic addition of upper floor space allows families to age in place, accommodate multigenerational living arrangements, or create dedicated work-from-home environments. Curtis Construction's approach ensures these benefits are realised through careful planning, quality construction, and attention to your family's specific requirements.

40%

Average space increase

25%

Property value improvement

12weeks

Typical completion time

30%

Energy efficiency gains

100%

Enhanced views and outlook

10year

Structural warranty

Modern luxury bathroom with marble tiles, freestanding bath, and frameless glass shower enclosure

Our Proven Upper Floor Extension Process

Curtis Construction has refined our upper floor extension process over 25 years of building experience. Our systematic approach ensures every project is completed on time, within budget, and to the highest quality standards.

From initial consultation through to final handover, founder Jai Curtis remains personally involved in every stage of your project. This hands-on approach guarantees consistent quality control and clear communication throughout the construction process.

Initial Consultation

Free site inspection and detailed discussion of your requirements, budget, and timeline

Design Development

Collaborative design process with architects and engineers to create optimal solutions

Council Approval

Complete development application preparation and council liaison for planning approval

Construction Documentation

Detailed plans, specifications, and material selections finalised for construction phase

Pre-Construction

Site preparation, material ordering, and construction scheduling coordination

Foundation Works

Structural assessments and foundation strengthening where required for additional load

Frame Construction

Structural framework installation using premium materials and proven techniques

Completion & Handover

Final inspections, quality assurance checks, and comprehensive project handover

What Our Clients Say About Their Extensions

Charbel Bou Sejaan

Had the pleasure of working with Jai and his team. The wife and I are over the moon with everything they produced. Safe, on-time, on-budget and everything looked amazing. Thanks guys, couldn't recommend any higher!

Judy Phillpott

Really like our new Laundry/Powder Room. Great company to deal with. All tradesmen were on time, cleaned up after themselves and did a meticulous job. Jai (Curtis) was very flexible when we wished to make some changes along the way.

Wendy Brown

Excellent service and quality of work. We have used Curtis Carpenters over many years for different jobs and are very happy with the service and standard of work.

Types of Upper Floor Extensions We Specialise In

Curtis Construction designs and builds various types of upper floor extensions to suit different home styles, budgets, and family requirements. Our expertise spans traditional weatherboard cottages to contemporary brick homes, ensuring sympathetic additions that enhance rather than compromise your home's architectural integrity.

Master Suite Extensions: Create luxurious parent retreats featuring spacious bedrooms, walk-in wardrobes, and ensuite bathrooms with elevated views and enhanced privacy.

Family Living Extensions: Open-plan living areas that capture natural light and views whilst providing flexible spaces for family gatherings and entertainment.

Multi-Room Additions: Comprehensive second storey additions incorporating multiple bedrooms, bathrooms, and living areas for growing families or multigenerational households.

Home Office Suites: Dedicated work-from-home spaces with separate access, built-in storage, and professional presentation for client meetings.

Each extension type requires specific structural considerations, design approaches, and construction techniques. Our experienced team ensures your chosen solution delivers optimal functionality, aesthetic appeal, and long-term value for your investment.

WB

Wendy Brown

Excellent service and quality of work. We have used Curtis Carpenters over many years for different jobs and are very happy with the service and standard of work.
BB

Betty Borg

Jai and the team built a custom home for us. The finishes are perfect and the building process was a breeze. We decided to use Curtis Constructions because we had used them on two other smaller projects previously and on both of those, we were very satisfied.
CB

Charbel Bou Sejaan

Had the pleasure of working with Jai and his team. The wife and I are over the moon with everything they produced. Safe, on-time, on-budget and everything looked amazing. Thanks guys, couldn't recommend any higher!
RC

Rachel Carson

We needed a fresh bathroom renovation. Jai & the team worked hard to provide us with the bathroom we wanted and we're very happy with the end result. They protected our floors and communicated clearly throughout the whole process. Job well done!
JP

Judy Phillpott

Really like our new Laundry/Powder Room. Great company to deal with. All tradesmen were on time, cleaned up after themselves and did a meticulous job. Jai (Curtis) was very flexible when we wished to make some changes along the way.

Upper Floor Extension Frequently Asked Questions

Get answers to common questions about upper floor extensions in the Sutherland Shire. Our experienced team has compiled these responses based on 25 years of building expertise.

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How long does an upper floor extension take to complete?

Upper floor extensions typically take 12-20 weeks to complete, including design, approval, and construction phases, though this varies with project complexity and council approval timeframes.

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How much does an upper floor extension cost?

Upper floor extensions typically cost between $2,500-$4,000 per square metre, with final pricing dependent on design complexity, materials, and site-specific structural requirements.

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Do I need council approval for an upper floor extension?

Most upper floor extensions require council approval, either through a development application or complying development certificate, depending on size and local planning controls.

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Will my existing house structure support an upper floor extension?

Most homes can support upper floor extensions with appropriate structural modifications, but a professional engineering assessment is required to determine specific strengthening requirements.

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What are the main benefits of adding an upper floor extension?

Upper floor extensions maximise property value and living space without sacrificing yard area, often providing better views, privacy, and return on investment than relocating.

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