Let Us Help You Build Your Dream Home
About Us
CWS Construction was founded in 2021 by Cory Sinclair alongside wife Victoria.
Both from farming backgrounds, Cory grew up in Oamaru before moving to Ashburton in 2012 to begin his building apprenticeship. Whereas Ashburton has always been home for Victoria who grew up on a farm in Mt. Somers and now works as an accountant.
In 2020 Cory & Victoria purchased a lifestyle property on the outskirts of Ashburton where they built their own home over evenings and weekends. At the time Cory’s parents also decided to build a house, so Cory would travel to Oamaru to build his parents home leaving early Monday morning and returning home Thursday evenings to begin work in his own home. They say it was a busy time and absolutely worth it. “We are not afraid of hard work, you just get on with it and get the job done”, values that have been installed in both of them from a young age.
Having designed and built their own home Cory and Victoria understand homeowners desire to create ‘their dream home’ they say “it’s what we have, and what we want for our clients”.
Cory and Victoria married in 2022 before welcoming their daughter Lucy in 2023. Now a family of four (including their small dog Molly), life is busy, but they love it.
In their spare time they love to get outdoors enjoying the fresh air, spending time with friends and family, boating, waterskiing and even helping on the family farms when needed.

A message from Cory
“We are passionate about bringing clients dreams to reality and listening to what the client is wanting to achieve with their project. The CWS team will provide you with a professional work manner and a high level of workmanship. We will manage a smooth build process for you and keep good communication from start to finish.”
Our Partners

How you can trust us
Our Specialty
If you’re looking to build your dream home or renovate your existing space, CWS Construction is here to turn your vision into reality without the stress of budget blowouts or timeline overruns. With over 100 successful projects completed, we specialise in new builds and renovations ensuring that every detail aligns with your lifestyle and aspirations.
Quality Control
Our unique 287 point quality control checklist guarantees excellence at every stage of your project, while our dedicated team conducts weekly updates and on-site meetings to keep you informed and engaged throughout the process. We pride ourselves on our professional, respectful approach and our commitment to delivering high quality workmanship that you can be proud of.
Client Feedback
Join our satisfied clients, like Anton and Ruth Perham, who praised our seamless construction process and timely delivery. Or Alan and Jan Willis, who appreciated our invaluable advice and high standards. With CWS Construction, you’re not just getting a builder; you’re partnering with a team that listens, understands and works tirelessly to bring your dreams to life.
Contact
Contact us today to schedule your face to face catch up and discover how we can help you create a home that truly reflects your vision.
Call Cory Today
027 432 4173
Take a quick peek at our team hard at work
How We Work With You
From first ideas to final handover, we work alongside you every step of the way… guiding, communicating, and building with care so your dream home becomes a reality.
Step 1
Initial Contact
We encourage you to reach out via phone or email to discuss your project. This initial communication allows us to understand your ideas, budget, and timeline, ensuring we are aligned from the very beginning.
Step 2
Follow-Up Communication
After your initial contact, we will follow up with a call or email to confirm details and set up a face-to-face meeting. This step is crucial for establishing a personal connection and ensuring we fully grasp your vision.
Step 3
Face-to-Face Meeting
During our in-person meeting, we will delve deeper into your project. We will listen carefully to your lifestyle needs and aspirations, which helps us create a tailored approach for your build. Feel free to bring any sketches or ideas you have, as this will facilitate a productive discussion.
Step 4
Initial Concept Plans and Estimate
Following our meeting, we will develop initial concept plans and provide an estimate based on your requirements. This step is essential for visualizing your project and understanding the potential costs involved.
Step 5
Preliminary Plans for Approval
Once the initial concepts are refined, we will present preliminary plans for your approval. This ensures that we are on the right track before moving forward, allowing you to make any necessary adjustments.
Step 6
Final Scope of Works and Quote Presentation
After your approval, we will finalize the scope of works and present a detailed quote. This comprehensive overview will outline all aspects of the project, ensuring transparency and clarity regarding costs.
Step 7
Contract Agreement and Signing
Upon acceptance of the quote, we will formalize the agreement by signing the contract. This step solidifies our commitment to your project and sets the stage for the next phases of construction. As part of our NZCB membership we use the NZCB contracts which are industry leading, the home owner can also opt to apply for a halo 10 year guarantee. A Halo 10-Year Residential Guarantee (Halo Guarantee) protects you after the building process, and for the next 10 years.
Step 8
Plans Submitted for Consent
Finally, we will submit the approved plans for council consent. This step is critical to ensure that all legal requirements are met before we commence construction, providing you with peace of mind as we move forward.
What Real Client’s Say About Us
“We contracted CWS construction to build our Passive House in 2022. Passive House construction was new to us, and to CWS, but that didn’t hold things back.
Cory was great at suggesting ideas, or finding solutions to problems, and the build ran exceptionally smoothly. I wanted to pitch in and be involved in many aspects of the construction work, which I can imagine would be a nightmare for many builders, but this was no problem for Cory who was very accommodating, if perhaps a little bemused by some of my DIY skills and ideas.
Cory has a great team who work hard and get the job done with no mucking around. After the Covid nonsense earlier in the year, with all the supply shortages etc we had concerns this might affect us, but Cory had build materials all sorted, arriving on site and on time, without a single delay.
We would happily recommend CWS Construction to any prospective home builder.”
Anton & Ruth Perham
Client
“Cory Sinclair and his two staff have recently built our new home with an attached studio and double garage at Methven.
Cory was very helpful with ideas and planning this project. Cory organized the build and contractors every step of the way. Ideas samples and alternatives were discussed and his advise was invaluable.
In our opinion the build was completed without delays and to a high standard.
We consider CWS Construction to be a hard working team and pleasant to deal with. Their workmanship was excellent and we would recommend them for any building project.”
Alan & Jan Willis
Client
Premium Guarantee
Budget Assurance Guarantee
Your investment is protected with transparent pricing. Our comprehensive overview will outline all aspects of the project, ensuring transparency and clarity regarding costs. We will adhere to the agreed budget, ensuring no unexpected financial surprises during your build.
Quality Craftsmanship Guarantee
Your home will be built to the highest standards. If we don’t meet our rigorous 287-point quality control checklist, then we will rectify any deficiencies at no additional cost to you, ensuring your home is completed to the utmost quality and craftsmanship.
Trustworthy Team
We guarantee to use trusted professionals with the appropriate licenses and qualifications to build your home.
On-Time Completion Guarantee
Your timeline is our priority. We guarantee to meet your expectations for the completion date, ensuring your project stays on track and you can plan your move with confidence.
Communication Promise
Stay informed every step of the way. If we don’t provide you with weekly updates and maintain open lines of communication, then we will assign a dedicated project manager to ensure your questions are answered promptly and you are always in the loop.


