Sydney Northern Beaches Builder
High-performance homes,
thoughtfully built.
Thoughtfully built homes designed for comfort, efficiency, craftsmanship, and long-term performance across Sydney's Northern Beaches.
Why CSN
- Warmer, quieter, healthier homes by design
- Builder-led from first plans to final handover
- Premium custom homes, renovations and additions
- Modern building science on every project
Certified
Passive House Tradesperson
Master Builders
Association NSW Member
Lic. 271210C
NSW Builder Licence
Northern Beaches
Local Builder
Who we build for
Premium projects where detail, comfort and trust matter.
CSN works with established homeowners, families and professionals planning substantial Northern Beaches builds, renovations and additions. Our services are structured to support different build types - explore them below.
Custom & architectural homes
New homes with thoughtful planning, buildability and premium finish.
Renovations and additions
Complex work around existing homes, older structures and live constraints.
Performance-led construction
Airtightness, insulation, ventilation and moisture-control thinking where it counts.
Services
Our building services.
Dedicated service pages support high-intent clients without overloading the homepage.
Custom House Builds
Architectural and custom new homes built with careful planning, clear communication and premium execution.
Explore service
Renovations & Restorations
Thoughtful transformations of existing homes, balancing modern comfort with respect for the structure already there.
Explore service
Additions & Extensions
First-floor additions, second-storey additions and extensions that create more space, light and value.
Explore service
High Performance Passive House Builds
Comfortable, efficient and healthier homes using modern building-science principles and Passive House expertise.
Explore serviceBuilding science
Passive House expertise, applied to premium residential building.
CSN's high-performance capability supports the wider building story: homes that feel better to live in, perform better over time and are built with greater care at the envelope level.
Airtight envelope detailing keeps heating and cooling inside
Ventilation and HRV thinking improves indoor air quality
Reduced condensation and mould risk through moisture control
Insulation, thermal bridge control and high-quality openings
0.34 air changes achieved against a 1.0 EnerPHit requirement
Certified Passive House Tradesperson knowledge on site
Recent work
Recent projects completed across Sydney's Northern Beaches.
Take a look through some of our recent work and see how we bring thoughtful design, craftsmanship and attention to detail together on every project.
The film
See how a high-performance home comes together.
If you're considering a Passive House or simply want to understand how they work, join CSN founder Christian New as he explains the principles behind high-performance homes, the meticulous construction standards required, and the benefits of creating a healthier, more comfortable and energy-efficient living environment.
Process
A calmer build starts with the right pathway.
Our process is tailored slightly depending on the service - full details are outlined on each service page.
- 01
Initial enquiry
Tell us what you are planning, where the property is and what kind of support you need.
- 02
Consultation & fit
We discuss goals, site context, project fit and the best service pathway before you over-invest in the wrong direction.
- 03
Planning & pre-construction
CSN coordinates with design and consultant inputs to clarify scope, buildability, performance priorities and sequencing.
- 04
Detailed quote & schedule
The project is documented, priced and planned with transparent expectations around timing, decisions and communication.
- 05
Builder-led construction
Christian and the CSN team manage trades, workmanship, site detail and client updates throughout the build.
- 06
Handover & aftercare
The finished home is handed over with practical confidence, care and long-term performance in mind.
About CSN
Built around Christian New's passion for thoughtful construction, meticulous detail and homes built to perform for generations.
CSN Constructions is a Northern Beaches building company founded and led by Christian New. With a deep passion for craftsmanship, building performance and quality construction, Christian takes a hands-on approach to every project, combining technical expertise, trusted trade partnerships and meticulous attention to detail to deliver homes built to stand the test of time.
Accreditations
Client words
Professional, high quality and clear on timelines.
CSN Constructions did an outstanding job for us. Their attention to detail was incredible, the communication throughout the project was clear and consistent, and their knowledge really showed in the quality of the final result. Couldn't be happier with the work - highly recommend!
We had the pleasure of working with CSN Constructions on a passive South Coast build, and I cannot recommend Chris and his team highly enough. From the very beginning, the level of professionalism, communication, and genuine care stood out.
CSN have completed several jobs for us and we have found the team consistently professional, high quality and on time. Christian is clear on timelines and keeps us informed with regular updates.
Chris and his team operate with a strong focus on quality, attention to detail, and a clear commitment to delivering a well-executed result. I would have no hesitation in recommending Chris and his team to clients looking for a high-quality outcome.
Start the conversation
Book an initial consultation with CSN.
Every project is different. Share your plans with us and we'll help determine the best approach for your goals.