Katie Lewis 


The owner, Katie Lewis, grew up in Grundy Center and studied interior design at UNI. Design has always been a passion of hers, hours of rearranging the house or the popular game SIMS creating homes were just a few signs design was in her future. Studying at UNI and abroad in Italy gave her the experiences she needed to be ready to open her business immediately after her internship at Holland House Interiors in Orange City! At the age of 21 Katie jumped into her business which is now 319 Decor and Design. 


Now serving two communities in Iowa, Katie is living her dream every day and is ready to help you make your home dreams become a reality! 


Full Service Design Team

Mariah Duffy



It has been a pleasure having Mariah on staff at 319 Decor and Design. 


Graduating from UNI Interior Design Program 2020, she is very knowledgeable and ready to assist with your design needs. With a touch of modern and the coziness of Boho, her style is a great compliment to the owner, Katie! She is a great asset to our team!

Ashlynn Yokum



Ashlynn has been a great addition to the 319 team! After interning with us we knew she had to stay on board! Graduating from the UNI Interior Design Program in 2021 she is well prepared to help with any interior design projects coming her way! She brings another flair to our design team with Mid Century Modern and Transitional being her favorites! 

Denise Graves



Our wonderful Store Manager, Denise Graves, is a born and raised Grundy County native and has always been close with the owner, Katie. With great style and class, she can help you find the perfect piece for your home! 

Denise has been with us since the start and is extremely involved with store operations as well as ordering new decor!

Our Process of Design


Phase 1

Design Inquiry Questionnaire

Every 319 Decor and Design project starts with our questionnaire. We ask that you provide us with as much information as possible. Including any and all inspiration photos and floor-plans of the space, if possible. This step is important for our team to fully understand your design needs and unique style! After submitting the questionnaire, our design team will reach out to you within the week to discuss any further questions and to schedule the initial consultation. 

Phase 2

Getting you Know You and  Your Design Needs

"Aka the Nitty Gritty"

.During the initial consultation, it is important for us to:

Discuss our process, discuss the project more in detail, review any plans you may have submitted, and define your design goals. After the consultation, we’ll submit to you a complimentary proposal that includes a quote for our professional fees for your project. From there, you will have the proposal to look over and decide if you would like to continue working with our design team. Upon you getting back to us with the green light on the quote, we will send you a contract to read through and sign. Along with the contract, we collect a retainer. The retainer will go towards any product you get from us. 

Phase 3

Measurements and 'Before' Photography

 You've passed the nitty-gritty, now, let the fun begin!

Once we receive the contract/retainer, we will schedule another meeting.

At this meeting, our design team will come and measure your space, so that we can bring accurate possibilities for your project to life through our 3D renderings! At this time, we also ask if you would share any inspiration (Pinterest board, Instagram Favorites, etc.) you may have. If you don’t have any inspiration going, we will then assign you the homework of pulling some together. After measuring your space, we will work on a custom design plan for your home. We will be ready to present our design to you within two weeks, project pending. At the scheduled meeting, we will present our ideas, renderings, and design direction. Our goal is to provide you with clear design options while being mindful of your budget.

Note: There are times where the meeting prior and this meeting happen at the same time.

Note: There can be multiple design presentation meetings before Phase 4. That is 100% normal. Changes are inevitable.

Phase 4

Finalizing and Ordering

As mentioned in the note above, we will work in person or virtually to make modifications and adjustments to your design. Upon your approval of the final design, we will then move forward with a final measurement meeting, along with choosing materials. We offer paint selections, lighting, tile, flooring, cabinetry, countertops, hardware, and furnishings. To proceed with any ordering and purchasing of products, we require half-down upfront and the second half when the product is deliveredWe will communicate official product lead times with you and contact you when the product(s) will be delivered!

Note: There will be multiple site visits and open communication with you and the contractor between ordering and installation.

Phase 5


The installation phase happens when all products have been delivered and the contractor/installer is finished. During this phase, we will come and install (place) and pieces you purchased from us, as well, bring decor to decorate your space. Decorating is a service we have on its own, but with hiring us for a full-service design we do this service complementary during installation. During installation, we also have a hired photographer come with us to take photos of your new and improved space. Beyond this, you will have the option for us to leave everything we used to decorate with you for a week and decide what you would like to keep. All you choose to keep will be 20% off your entire decor invoice. 

As Seen In Gallery of Homes