Award winning, accredited and certified Interior Decorator specializing in creating and customizing the perfect plan to fit any style or budget, Katherine brings diverse solutions and personal attention to all project details, from conception to completion. In addition, Katherine’s team of qualified contractors and professional services ensure that the job gets done right the first time and on schedule – guaranteeing realistic costs and remarkable results.

Studied and graduated in Montreal, Quebec achieving an Outstanding Performance Award. Since 1995 Katherine has earned the trust of many home owners, home builders and architects working on the planning and design processes from the blueprints to the final finishing touches.

Proud member of DDA, IDC, NKBA and the Newmarket Chamber of Commerce. Graduated in 2019 as one of the first CLIPP professionals in Canada for creating safe and inviting environments for clients for any indoor or outdoor spaces. Wellness, beauty and JOY are the key ingredients to all of my design projects.

Served as Director on the board of the Canadian Decorator’s Association for 4 years, dedicated and committed, Katherine Joy Interiors offers a professional full design service to meet your cultural, style and budget needs.

All of this allows you to truly enJOY the experience of adding value to your home and to your lifestyle. That is what Katherine Joy Interiors is all about.


  • Baldwin Cartier~ West Island Vocational Training Centre, Montreal, Quebec
  • D.E.P. Diploma 1995
  • Interior Decorating and Display
  • Outstanding Performance Award
  • NKBA Member
  • Business owner since 1995
  • IDC Interior Designers Of Canada
  • Decorators & Designers Association of Canada Member
  • Certified Drapery Consultant
  • Certified Wall-covering Consultant
  • Analysis of Design
  • Systems for Success
  • IES Fundamentals of Lighting

Awards & Achievements

  • 2022 Bronze Award Winner - D&DA Canada Décor & Design Competition
  • 2021 Silver Award Winner - D&DA Canada Interior Decorating with Construction ($10-45k)
  • 2021 People's Choice Award - D&DA Canada Decorating & Design Competition
  • 2019 Gold Award Winner - D&DA Canada Universal Design
  • 2019 Silver Award Winner - D&DA Canada Interiors with Construction (Under $45k)
  • 2019 Pinnacle Achievement Award - D&DA Canada
  • 2017 Bronze Award Winner - D&DA Canada Kitchens over $50k
  • 2016 Bronze Award Winner - CDECA Decorating and Design Competition Commercial Category
  • Best of Houzz Service - 2015 to 2022
  • Best of Houzz Design - 2021 to 2022
  • Reader's Choice Award 2015
  • Best Overall Exhibitor Award
    Newmarket Home & Lifestyle Show 2012
  • 2012 Silver Award Winner -
    CDECA Decorating and Design Competition


The Emotional Impact of the Colour Red

Katherine Joy's signature colour

Red creates the highest arousal threshold in humans. So from negligees to sports cars to food, red stimulates all kinds of appetites - it is true that red literally can turn you on. This is why adding red to your decor in the dining room and in the bedroom are very good choices! Red is the colour of passion, power and vitality. Red increases enthusiasm, stimulates energy, encourages action and confidence and provides a sense of protection from fears and anxiety.