A vintage-style living room with a fireplace, a large window, and French doors leading to a sunroom. The room has eclectic furniture, including an olive green velvet sofa, armchairs, a glass coffee table, and a large potted plant. There are decorative paintings, a large mirror, and various artworks and books, creating a cozy and stylish ambiance.

Mariah o’brien Interiors

interior Design

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Chez Moi

INTRODUCTING

Shop Furniture
1930s Italian Chaise Lounge, reimagined by Julia King, is upholstered in Prelle fabric with a deep purple, blue, and red gradient. Bright green and blue piping accentuates its curves, while layered wooden legs provide a grounding contrast

A furniture and home atelier featuring fine art, textiles, vintage and bespoke furnishings, rugs, and uncommon objects

A woman wearing a sheer floral blouse with ruffled collar and cuffs, and high-waisted velvet pants, standing against a plain background.

Le Petit Chez Moi

A treasure box of upcycled, handmade, and vintage clothing and jewelry created by local artisans.

Shop Fashion

Rooted in classic design and layered with soul, interior designer Mariah O’Brien crafts spaces that feel collected, effortless, and deeply personal.

Explore Design Projects
Bright living room with large windows, white brick walls, cream curtains, wooden bookshelf above window, vintage rocking chair, beige sofa with pillows, potted plant, patterned rug, and a rustic ceiling light fixture.

Projects

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Eagle Rock

Los Feliz Manor

Design Services

A display board with various interior design photos of kitchens, bathrooms, and living spaces, alongside samples of tiles, stones, and materials on a table in front, including cacti and a small fabric sample.
  • Mariah approaches each home as a living organism—honoring its history while revealing its most soulful, contemporary self. She blends eras and natural materials with a curator’s intuition, creating warm, quietly luxurious interiors that feel effortless, personal, and perfectly at home in their architecture.

  • From first sketch to final finish, Mariah guides full-scale builds and transformations with an architect’s eye and a craftsperson’s sensitivity. She shapes structures that honor their setting, refining proportion, flow, and detail to create homes with lasting soul.

  • Mariah designs landscapes as extensions of the home—natural, sculptural, and rooted in place. Her outdoor environments blur the line between architecture and nature, weaving local plantings, pathways, and gathering spaces into serene, lived-in gardens.

  • With a finely tuned editorial eye, Mariah stages homes to highlight their best qualities—inviting warmth, character, and shaping moments of connection. Her staged spaces feel curated yet effortless, resonating with buyers on an emotional level and elevating value for the seller.

Work With Mariah

Articles | Interviews

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