Our Story

Oswald Construction has a long history of quality craftsmanship and service in Winnipeg. We are a full-service, design-build company who specialize in large-scale residential renovations, additions, & custom homes – as well as bathrooms, kitchens and outdoor living spaces. Since our inception in the 1950s by Karl Oswald, it has been our mission to build and renovate at the highest standards, while delivering an unrivalled overall building experience. We foster this through trust, expert knowledge, and skilled workmanship. In 1997, Karl’s son Ralph and his wife, Doreen, took over the business and continued to drive our mission while growing the business into new areas of the city and region.

Ralph continues to be involved in the business & has served as a mentor for many, including Graeme MacMillan. In 2021, after working alongside Ralph for several years, completing his carpentry apprenticeship & obtaining his Red Seal designation, Graeme took over ownership of Oswald Construction. He is dedicated to continuing to grow Oswald and maintain the values and mission set in place over 70 years ago – while driving sustainability in all parts of Oswald’s design & build processes.

Currently, we maintain a full staff of project managers, designers, supervisors, carpenters & apprentices – many of whom have been with us for well over a decade. We also work with outstanding long-term trade partners, who we evaluate not only on the quality of their workmanship but also their friendliness, cleanliness and professionalism. We treat these partners with the same respect and fairness as our staff, as they are an integral part of our success and our client’s overall experience.

We understand that working in and on your home is a very personal and intimate privilege that we do not take lightly. We aim to provide the highest level of customer care possible through open communication and an obsession with continued improvement in our processes. We are very excited for the future of Oswald Construction as we continue to grow and evolve.


To build and renovate to the highest standards, and to deliver an unrivaled overall building experience, through trust, expert knowledge, and skilled workmanship.


To measurably enhance the lives of everybody we interact with, including clients, employees, trade partners, and our local community. We aim to provide our employees with a positive, meaningful and fulfilling work experience, which in turn delivers the best results for our clients. We commit to continuous learning, exploring and diligently researching new products, and maintain a steadfast focus on sustainability and healthy living environments. We realize that working in a client’s home is a very personal experience, therefore we take this privilege, and the trust bestowed upon us very seriously. We strive for continual improvement in everything we do.



  • Quality and attention to detail
  • Proactive problem solvers
  • Total customer experience
  • Open lines of communication
  • Accountable, responsible and stand behind our work
  • Pillars of our community
  • Positive and inclusive
  • Efficient and effective
  • Promote safe job sites
  • Sustainable building practices
  • Healthy indoor spaces
  • Integrity is at our core

Learn more about our team.