Your Dream Home Begins Here


CastleGate Design offers Residential Design & Drafting Services. Bring your sketches, ideas, and pictures and we'll make your dream home floorplan a reality. We work with you every step of the way to ensure we create the perfect plan for you, then we provide the final documents needed for construction.

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You won't find the process of designing your dream home plan any easier than here with CastleGate Design. Our process is simple and straightforward. Step by Step, we'll guide you through the process until you love your plan. Click below to learn the process details.

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Get ideas, dream big. We can start your plan with ideas based off our current plans, or any other plans and pictures you find online. Browse through our extensive plans to see the different styles, sizes and concepts that we can provide you.

Contact us to see more of our plans.


CastleGate Design LLC was founded in 2007 in Hamilton MT as 3PeakDesign. In 2008, we moved to Idaho and have been here since. 3PeakDesign changed our name to CastleGate Design in 2018. Located in Idaho Falls, CastleGate Design provides home design services and drafting to all the surrounding areas with completed projects from south of Pocatello, to far north into Island Park, and from Boise to Driggs and the Jackson Hole area. We also service clients nation-wide with completed projects in Telluride CO, Georgia, and surrounding states.

CastleGate Design has their office in Historic Downtown Idaho Falls, in the Rogers Building, 2nd Floor.

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545 Shoup Ave. Ste. 207
Idaho Falls, ID 83402
office: 208-881-8079


Read what our clients have said about CastleGate Design:

Thank you for your patience, understanding and design knowledge while helping us with our home design. Our plan turned out better than we could have imagined. Thank you for all that you did to get us here. I LOVE our home and it all started with you!

- Jacob H.

Thank you for showing us what was possible. Years of planning and gathering of ideas and we had something great. But then you took it all to a whole new level with your design experience and made our plan more than we could have ever asked for!

- Justin A.

CastleGate Design provided much needed design assitance, 3D Modeling for visualization, and fantastic plans for our builder. Construction was easier than expected due to accurate and precise construction drawings. Thank You!

- Amber M.