Diann Sill is an ASID award winning designer with over 35 years experience in most all areas of interior design, including residential, hospitality and commercial. Her projects have included both regional and international work.

Diann Sill Design began in the 1990's driven by a passion for excellence in design and personalized service for the discriminating client. After working for large design and architectural firms and with broad experience designing many residential and commercial projects, Diann realized the ideal aproach to offer the best in design and service was to maintain a small discriminating design business.

Diann holds a Bachelor of Fine Arts Degree with majors in Interior design and Design from the University of Kansas. Diann maintains professional mambership in ASID, the professional leader in the interior design profession and NCIDQ, the national qualification for Interior Design.

Diann has been appointed by 2 sitting Governors havinf served 6 terms as the Interior Designer for the Capitol Building Advisory Committee of the state of Colorado. In this position she has also served or headed numerous committees including the committee for the Presidential portraits for the gallery in the State Capitol.

Diann builds relationships both with clients and the other "team members" working on the projects, which is the path to the most successful project result.

Diann's projects are so vared in style, she likes to say her style is good design. that aside she is so adaptable that the best in design principles are applied to traditional or modern. her portfolio includes, American, French, English styles in both traditional or comtemporary. Many more specific styles are also included such as Southwest, Mountain, Island and so on and so on. But most often she is creating a style that will be uniquely yours, such as Tuscany Wyoming, Antique Contemporary Asian or Colorado French. The unifying theme seems to always include comfort and a skilled use of color.

Diann designs every project herself and is not passing off this nutured part of your project to a design assistant. She includes on the team many craftsmen and artisans to create a well designed, exclusive project that will be uniquely yours. It is comon for her to custom design numerous products and furniture for your project.

Diann Sill design is a full service design firm specializing in original and exculsive design for high-end residential, hospitality and commercial projects.

Diann Sill Design is in the business of designing total interior environments for a wide variety of projects. Our design objective is to translate your taste and preferences into fine quality interiors reflecting you.

Diann Sill Design reasearches, plans, and excutes the full range of design services separately, or as part of a team tailored to fit the design needs, budget and philosophy of our clientele. Timeless design that is both financially and functionally effecient has brough us the majority of our projects by client recommendation as well as referral by other design professionals. Every client is valued and each project is nurtured from spaceplanning to the finished installation. We believe in listening, we are sticklers for details, our resources are limitless, and most importantly we practice good design.

Diann Sill Design looks forward to being part of your team.

A list of services for luxury residential or public space:

Collaborate with client, architect and contractors in project planning and plan review.

Space Planning, furniture layout and lighting plan.

Detailed architectural interior construction drawings and illustrations.

Architectural finish selection$ specification for remodel or new construction.

Interior selections and specifications: Color, furniture, fabrics, and lighting.

Custom furniture, cabinetry, rug and lighting design.

Art & accessory selection and/or commisson and installation.

Fabrication & Installation of window treatment and soft treatments.

Procurement Services.

Sustainable Alternatives.

Project Management.

Diann Sill Design's most treasured award is a client that is thrilled with the completed project. Numerous and exclusive clients do not allow photography or publication. Available photos are shown for a sample. Please feel confident that we respect your privacy.


Parade of Homes 2008, Denver, Colorado, La Belle Maison, Peoples Choice Award.

ASID Product Design Award 2007

Denver Post

Colorado Homes and Life Styles

Denver Magazine

Architectural Accents