Meet Our Designers

By Design Interiors, Principal Interior Designer, Owner and Founder, Peggy Fuller headshot

”Faith is seeing the invisible and believing the unbelievable so that you might achieve the impossible."  – Charles R. Swindoll


Principal Interior Designer, Owner & Founder

At By Design Interiors, my design staff and I, approach our projects as an adventure... full of discovery.  We believe that working with a designer should introduce you to new thoughts and ideas.


Peggy has over 30 years of design experience and training in both residential and commercial design. She would say she has always been a designer..." as a young child I was constructing furnished apartment buildings with shoe boxes and found objects that would accomplish my vision."

By Design Interiors, headshot of Erika Barczak, senior interior designer in Houston and Austin

"Your design isn’t about me, it’s about you. I want people to walk into your space and feel you and your family all around it."


Senior Interior Designer

Erika graduated with a Bachelor of Fine Arts degree in Interior Design from Wayne State University, in Detroit. It was there that she fell in love with Interior Design.


She believes that everyone has a vision for their personal space but may need a little assistance in achieving those goals. With some research and a lot of imagination, any space can function flawlessly while looking gorgeous, calming, and energizing.  Erika's technical knowledge, wide-based skill set, and vivacious energy makes her a joy to work with.  She is ready and excited to transform your space!

By Design Interiors, Headshot of Ayca Stiffel, Senior Interior Designer within the Houston areas

“Creativity is intelligence having fun” – Albert Einstein


Senior Interior Designer

Ayca graduated from The University of Houston with a Bachelor of Fine Arts degree in Interior Design and a minor in Art History. She has over 26 years of experience in residential, retail, commercial, and corporate office design. 

Ayca's appreciation and passion for design and architecture developed as she spent her youth living in seven different countries on four continents. In her work, she thoughtfully creates interiors that uniquely reflect the client's personality and help translate their vision into a reality. 

By Design Interiors, Headshot of Ashton Joseph, Senior Interior Designer in Houston areas

“Design is a passion you cannot force”


Senior Interior Designer


Ashton earned a Bachelor of Arts degree in Interior Design from Sam Houston State University.  She began her career immediately upon her graduation from college as an intern here at By Design Interiors, and now is a Senior Lead Designer.

With her vivacious personality, passion for design, and fresh eye for detail, Ashton captures the personal style of her clients. She utilizes her extensive travel experience, love of materials, and textures to generate one-of-a-kind designs. Ashton specializes in both residential and commercial projects with a deep commitment to outstanding customer service. 

By Design Interiors, Headshot of Jenni Warsitz, Lead Interior Designer in Houston areas

"Design your home for YOU. It's ok to be different!"


Lead Interior Designer

Jenni graduated from Texas State University with a Bachelor of Arts degree in Interior Design.  She has a wealth of knowledge and technical skills.


Her well-trained eye for detail, along with her bright personality make for a great working experience. She introduces her clients to unique ideas that create spaces that are functionally appealing for their specific lifestyle. She has years of experience in selecting custom furnishings. When remodeling or building her fresh ideas result in exciting yet relaxing interiors.

By Design Interiors, headshot of Isabel Sarria, Lead Interior Designer in the Austin areas

"I love to mix styles! Old and new, traditional, and modern. It is okay to mix and match."


Lead Interior Designer - Austin, TX

Born and raised in Venezuela, Isabel earned two degrees: a Bachelor of Arts in Interior Design from Sam Houston State University and a Bachelor’s in Business Administration from Universidad de Margarita in Venezuela. Post-graduation, Isabel has grown from intern to design assistant to lead interior designer. She now oversees our By Design Interiors - Austin branch. 

Isabel loves to mix design elements and styles to create a space that perfectly reflects her clients and their needs. When she is not in the studio, you can find her exploring the funky city of Austin with her fiancé and corgi, Charlie.