A woman standing outside in front of a brick and beige wall, with her arms crossed, smiling, wearing a gray blazer, white patterned top, dark jeans, and a smartwatch.

Your Pittsburgh Architect

creating architecture

for growing

Families & Businesses!

Services

Line drawing of a blueprint, pencil, and compass, symbolizing architecture or engineering planning.

Commercial interior fit-out work. Whether you’re opening up a storefront location, renovating an office location, or relocating your business. I’m here to support and celebrate your company’s growth through the environment around you.

Interior Fit-Out

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Sometimes what is available just doesn’t fit your needs.

A custom home can reflect more than your design style, but also the lifestyle and function you need. Combining creativity, listening, and efficiency I can help craft your dream into reality.

New Construction

Illustration of a book and a pencil, with the book containing a diagram or floor plan inside.

Whether you have determined you need to expand rather than move, or adjust based on new needs. There are always new seasons of business and life. Let’s reimagine the possibilities of your home or business without making a move to a new location.

Addition/Renovation

Hello,

I’m Katelyn Rossier!

I'm a licensed architect based in Pittsburgh, Pennsylvania.

My background is diverse, spanning higher education, healthcare, workplace, and financial projects, but my heart is with residential and small commercial business owners.

There's nothing more inspiring than working with professionals who pour their passion into their dreams.

I’m here to be more than your architect!

I’m here to celebrate the wins, create efficient designs that support both your current needs and future growth, and craft functional spaces perfectly tailored to how you personally live and work.

A woman standing outdoors on a sunny day, holding a white hard hat, rolled-up architectural plans, and wearing a black blazer, floral blouse, and jeans.

I love to work with…

  • You want a partner who can develop your ideas into a real design.

  • You’re looking for help starting your home addition, renovation, or new construction home.

  • You’re starting a family and need to expand? I’m a mom and I get it.

  • You need to accommodate an in-law suite while still having space for your family.

  • You may even be interested in better energy efficiency to help save long term.

  • You want to learn more about the architecture design process along the way.

  • You want someone to work WITH YOU at every stage of the project.

Homeowners

A large, modern white house with a front porch, green lawn, and garden, surrounded by trees under a partly cloudy sky.

Don’t mind my dog, Milo photo bombing the photoshoot.

  • There is a different drive, passion, and pride when you own your own business. I grew up in a home of a entrepreneur, and I’m a small business owner too.

  • Designing for flexibility and adaptability if the way to design for fast moving businesses.

  • Sometimes it is time to relocate and that is a big step, or close down for renovations. It is not an easier decision and I can even help you weigh your options.

  • It may be time for a change but budget is tight. Let’s look at your options to discover where to best spend wisely to leave a huge impact!

  • I’m here to help the design and construction process be less stressful for you while keeping you informed every step of the way.

Small Business Owners

Confidential Client Work while at IKM

Work I designed, documented, and completed while working at another firm.

Modern office waiting area with two white armchairs, a small black table with a plant, a reception desk with a computer, and a large window showing greenery outside. There is a wall with a logo and a television screen.

Work I designed, documented, and completed while working at another firm.

A woman holding a rolled-up blueprint and a white safety helmet stands on outdoor concrete stairs, smiling.

Ready to get started?

Reach out to me below. Share with me a bit more about your project and let’s chat to see if we’d make a good team for your project!