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01 about

The Garrigan Design Group's goal is to listen, observe and learn about their clients and identify what works best for them in their projects. With the use of colors, fabric, furniture, accessories and finishes we are able to reflect our clients' wants in any style. Our designs are not limited to one look or style, creating beautiful yet functional designs for clients.

Giana Castelli, principal & lead designer, is an interior designer based in New York & New Jersey. She graduated at the top of her class with a Bachelor of Science from Philadelphia University in 2018. Giana specializes in education and commercial interiors and is currently working on projects in the New York / New Jersey tri-state area.

Giana has specialized in the K-12 education, independent school, and hospitality design sector since 2017, designing dozens of libraries, maker spaces, classrooms, restaurants, and specialty spaces for clients. While living in Philadelphia, she worked specifically on restaurant, bar, and other hospitality and residential interior design. Giana approaches interior design from both a programmatic and functional need as well as an aesthetically pleasing need. She is proficient in drafting, digital rendering and visualization, FF&E specifications, and ultimately presenting complete interior design packages, concepts, and plans.

With the belief that everything she does has a purpose, Giana approaches interior design with the intention that it's not only supposed to look pleasing but should be functional and effective for her clients. Her designs evoke emotion-whether from the texture of the fabric chosen, a piece of furniture that sparks conversation and interest, or the custom-built furniture systems that organize a space. She is also nimble in how she approaches every project, realizing that there are many possible avenues to take to achieve the desired results.

When she's not working, she spends time with her husband, John, and their one-year-old son, Jack. Together they spend lots of time at the beach and the outdoors, trying new foods, and antiquing.



02 portfolio


03 clients

The Garrigan Design Group can tackle any project, big or small.

We do not limit our clients to a certain budget or design sector. As a group, we are capable of working of working on both commercial and residential projects.


The Garrigan Design Group focuses three design sectors.

  1. Hospitality - Restaurant, Bar, & Public Spaces

  2. Education - K-12, Independent & Private Schools

  3. Residential - Single Family and Multi-Family Dwellings

Each project needs specific roles filled by the Garrigan Design Group.

We offer the following services but are not limited to:

  • Interior Design & Styling

  • Branding Design

  • Custom Millwork Design & Procurement

  • FF&E (Furniture, Fixtures, & Equipment) Procurement

  • Exterior & Landscape Design Assistance


04 contact

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Tel: 347-276-4685

New York / New Jersey / Pennsylvania

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