ABOUT US

Kathy YuenSenior AT, President &CEO

Founder of Phase One Design with over 16 years of experience in the construction, real estate, and architectural industry. Kathy’s vision is to impact people’s lives by creating a legacy of beautiful and functional homes for families around the world.


Mark DeastyAT, Design Manager

Mark brings 14 years of experience in the home design and building industry. He is known for his deep passion for seeing clients realize their hopes and dreams in design that is not only functional, but timeless and beautiful.

Jessica Willsie – – Senior AT, Studio Manager

Jessica’s brilliant attention to detail makes her a natural for ensuring the entire design studio runs smoothly for clients on a day-to-day basis. She is fanatically detail-oriented and it shows in the quality of projects she delivers.


Jackie HardstaffOffice Coordinator

Jackie is commonly referred to as the “master of everything”, and helps coordinate client projects throughout their entire lifespan. She is the epitome of organization and ensures the entire office runs smoothly.

Lindsay YongSenior AT, Project Tech

Lindsay joined the Phase One team in 2013 with over 8 years of luxury architectural design experience. Her enthusiasm is contagious, and it is very evident that she is sincerely passionate about helping others design and build their dream home.


Kevin LoewenSenior AT, Project Tech

Kevin’s solid construction background as a framer gives him a huge competitive edge in the industry. Known for his understated, witty humour, clients cannot help but love to work with Kevin as part of their project team.

Marcella BorrelliAT, Project Tech

Marcella will never rest until a client is 110% cared for. Her experience ranges from design to technical drawings, but her real passion is to design a client’s “forever” home.

BrutusOffice Pup

Although Brutus’ design experience is quite limited, our little Frenchie brings unlimited love to both our team and clients alike. His favorite past times include bringing you a squeaky toy to play with, jumping on you, and snuggling contently in your lap.



More than just design... our client promise

  • We practice “ego-free” design – design revolves around our clients… Not our egos.
  • We practice design-discipline to safeguard our client’s budgets.
  • We take accountability for our client’s construction start date.
  • We relentlessly pursue a flawless set of construction documents – it protects our client’s investment.
  • We will always deliver more than what is expected.

What We do

Initial Project Feasibility & Due Diligence

We ensure your project is feasible, identify any red flags, and educate you in how to plan your project in detail from the very beginning. Planning makes perfect!

Development & Building Permits

Understanding and navigating the City of Calgary’s Land Use Bylaws, planning policies, and approval processes can be complicated. Our team has the expertise and experience to successfully negotiate and acquire all Development and Building Permits.

Award Winning Custom Home Design

Our detailed process ensures we produce a design you LOVE, while educating you to make great design decisions. After all, it is your home to live in. We work closely with you to create your entire home environment, paying attention to every last design detail.

Construction Drawings & Documents Package

A high-quality set of construction documents is one of the most valuable and highest-return investments you can make during the planning process. Did you know it is common for a mistake on your plans to cost thousands of dollars during the build? We take this very seriously.

We have extensive quality control processes including an 648-point quality control checklist that we perform 10 times per project. We strive to have a perfect set of construction documents.

Pre-Construction Planning

A successful project is more than just great design. We help ensure your project will be aligned with your final budget, select the perfect homebuilder (if applicable) and much more to ensure your project is thoroughly planned to every last detail. Our team becomes your trusted advisors and educators throughout the whole process.

3D Modeling & Walkthroughs

We use the latest in architectural design tools and technologies to give you the ability to see what your house will truly look like before it is built.

Upcoming Events : Get the info you need to build in Calgary's Inner-City.

Phase 1 has gone over and above to design our dream home. They have met every deadline to date, have kept us up to speed on all changes, and made the design process stress free and fun. Phase 1 has always been professional, accommodating and pleasant to see at each meeting. They have impeccable knowledge on permitting and square footage coverage for our lot. Phase1 had amazing ideas we would never have thought of and our dream home is becoming a reality because of them.

~Amanda Slade

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