Contemporary living room with layered textures, warm neutrals, and custom millwork. Designed by Interiors by AC to reflect timeless style and relaxed sophistication in a Miami home.
Hero image of a luxury living room designed by Miami interior designer Interiors by AC. Features soft neutral tones, sculptural seating, integrated storage, and natural light — a refined blend of elegance and comfort.

Boutique Residential Interior Design Studio Offering Virtual Room Design and Full-Service Interiors in South Florida

Stunning interiors, made for you. Founded by Miami-based Interior Designer Arianna Castro, with over a decade of high-end residential design experience, we create beautiful, functional, and timeless spaces, making the entire process seamless for our clients. We approach every project with transparency, clear communication, and a strong commitment to turning your vision into a home you’ll love for years to come.

Stunning interiors, made for you. Founded by Miami-based Interior Designer Arianna Castro, with over a decade of high-end residential design experience, we create beautiful, functional, and timeless spaces, making the entire process seamless for our clients. We approach every project with transparency, clear communication, and a strong commitment to turning your vision into a home you’ll love for years to come.

How We Make a Difference

  • We prioritize your needs, respect your budget, and stay closely connected throughout the process.

    With a clear sense of what works, we guide you to a design that feels uniquely yours and looks stunning.

  • We never use cookie cutter solutions. We create spaces that reflect your lifestyle, blending everyday practicality with timeless beauty.

    Our goal is simple: interiors that outlast trends, adapt to your needs, and spark joy every time you walk in.

  • We collaborate with a trusted network of vendors, manufacturers and contractors, relationships built on trust and shared standards of excellence. This ensures the right expertise at every stage for a consistent, high-quality result.

  • From your intro call to final install, we lead with integrity, transparency, and attention to detail, keeping you informed so the process feels clear, aligned, and stress-free.

Why Clients Choose Us

Over a decade designing high-end residential spaces

Broad network of premium vendors and material suppliers

Elegant diamond icon symbolizing luxury service and project excellence
Minimalist icon of a house representing experience in designing refined homes
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Flexible service tiers — from quick consultations to full-service design

Unique timeless design language that adapts to your style

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Based in South Florida, available virtually wherever you are

Discover Our Portfolio

  • Master bedroom lounge with sculptural chair and soft textures. Designed by Miami interior designer Interiors by AC.

    Coral Gables Residence

  • Master bedroom TV wall featuring custom wood paneling and integrated storage. A clean and balanced design element in a South Miami residence by Interiors by AC.

    Coral Gables Residence

  • Luxury living room with sculptural seating, marble accents, and warm neutral tones. Designed by Miami interior designer Interiors by AC.

    Coral Gables Residence

  • Refined living space with soft textures, custom furniture, and layered neutrals. A timeless interior by Miami-based design studio Interiors by AC.

    Coral Gables Residence

  • Dining room with marble accent wall and cream chairs in warm tones. Designed by Miami interior designer Interiors by AC.

    Doral Estates Residence

  • Modern home office with built-in storage and layered textures. Designed by Miami interior designer Interiors by AC for a Doral residence.

    Doral Estates Residence

  • Wall of white built-in storage in a custom home office. Clean and minimal design by Miami interior designer Interiors by AC.

    Doral Estates Residence

  • Guest bedroom with teardrop pendant, textured wallpaper, and neutral bedding over a soft area rug. Designed by Interiors by AC in Boca Raton, Florida.

    Boca Raton Residence

  • Powder room with oak accents, marble sink, and soft lighting. Designed by Miami interior designer Interiors by AC.

    Boca Raton Residence

  • modern kids room for in a Key Biscayne condominium designed my interiors by ac, miami interior designers

    Key Biscayne

  • Foyer with fluted white panels and bronzed mirror. Designed by Interiors by AC for a Doral, Florida residence.

    Doral

  • Virtual home gym with wood ceiling, mirrors, and built-in storage. Designed by Interiors by AC in warm neutral tones.

    Home Gym Concept

View Projects in Detail

Design Services

Arianna Castro leading a virtual interior design consultation via video call, part of the Room Design Package offered by Interiors by AC for clients nationwide
Arianna Castro, lead designer at Interiors by AC, reviewing architectural plans on-site during a residential construction project in Miami Beach Florida.
Custom home office design with built-in storage, neutral tones, and layered textures. Created by Miami interior designer Interiors by AC for a Doral residence.

An exclusive design experience for home remodels and transformations.

  • Led by Principal Designer Arianna Castro from concept development to execution

  • Home space planning and design

  • Project management and job site visits

  • Flooring, wall covering and material selection

  • Furniture procurement

  • Custom furniture design

  • Ideal for new builds or renovations

Everything you need to redesign a single space—virtually delivered, professionally planned, and thoughtfully tailored to your style.

  • Furniture layout and accent wall design

  • Shopping list from U.S. retailers—select items may include trade pricing or exclusive offers

  • Complete design presentation to visualize your space.

  • One 45-minute call with Principal Designer Arianna

  • One round of revisions included

  • 3D Renders available (extra fee applies)

Focused virtual session for clients seeking expert guidance and actionable feedback on specific design challenges or direction.

  • One 45-minute video call with Principal Designer Arianna Castro

  • Professional advice on layout and styling

  • Ideal to identify your style and quick decision-making

  • Recap email with notes and suggestions.

What Our Clients Say

  • “Interiors by AC was incredibly easy to work with and did a fantastic job designing our home. The process was smooth from start to finish, and the results truly speak for themselves. I’m already looking forward to working with them soon!”

    Daniela
    Doral, FL
    Read it in our Google profile

  • “Loved working with Interiors by AC. The renovation was very smooth and clear from start to finish. Arianna has a great eye and made it feel easy.

    Highly recommended if you're looking for something special in your house.”

    Gerardo
    Boca Raton, FL
    Read it in our Houzz Profile

  • “Arianna is seriously the best! She is so great to work with and her designs are perfection. Loved working with her, and can't wait to collaborate with her again soon”

    Jenna
    Read it in our Google Profile

Fill the form on this page to discover how we can bring your vision to life — with no obligation.

You can also reach out at:
Email info@interiorsbyac.com
WhatsApp Chat with us
Phone +1(786) 535 5186
We speak English & Spanish

Schedule a Complimentary Intro Call