Nimmo established his eponymous design firm in Los Angeles in 1990, starting with residential interiors, then wrought-iron fire screens and subsequently a full line of home furnishings, including custom-designed furniture (for indoors and outdoors), lighting and iron work, most notably fire screens and tools. In the past 25 years, the company has grown to have a global presence. Today, the firm’s interior design projects encompass residential, commercial, office and hospitality.

Architectural Digest, Elle Decor, Luxe Interiors + Design, Objekt, Casaviva, Interior Design, Traditional Home and The Robb Report magazines, among numerous others, have published Nimmo’s work, and he has spoken about his art and craft at illustrated presentations in New York, Los Angeles and San Francisco.