Who We Are

Designs By Casandra is a Miami-based Architecture and Interior Design studio founded in 2016 by architect Joshira Raposo, whose design philosophy blends architectural discipline with refined, human-centered interiors.

Originally from the Dominican Republic, Joshira holds an accredited architecture degree and is also a proud member of the American Institute of Architects (AIA), the leading professional organization for architects in the U.S.

With over 20 years of architectural experience and nearly a decade in the high-end interior design field in the United States, Joshira brings a global perspective and deep technical knowledge to every project. Her work is characterized by timeless elegance, functionality, and a strong commitment to personalized design.

At Designs By Casandra, we offer full architectural and interior design services for residential and boutique commercial projects. Our team has successfully completed work in multiple regions across the United States and the Caribbean, and we proudly collaborate with clients nationwide and internationally.

Our approach is collaborative and detail-oriented, rooted in listening, guided by experience, and always tailored to the unique lifestyle, needs, and aspirations of each client. We create spaces that are not only beautiful but meaningful, lasting, and deeply personal.

Our Expertise

At Designs By Casandra, our expertise begins with what we believe to be the most important aspect of great design: space planning and functionality. As architects, we see layout not just as a matter of aesthetics, but as the foundation of how a space lives, flows, and supports those who inhabit it.

Whether we are designing a home, a commercial space, or a multi-family development, we start every project by understanding the client’s lifestyle, habits, and priorities. Our goal is to craft layouts that are intuitive, efficient, and tailored, ensuring that every square foot serves a purpose, without sacrificing elegance or beauty.

Our architectural and interior design services include:

  • Space Planning & Layout Optimization
    Intelligent, lifestyle-driven spatial design that enhances flow, usability, and comfort.
  • Full Architectural Services
    From conceptual design to permitting, construction documents, and design oversight , with a focus on proportion, structure, and timeless form.
  • Interior Architecture & Design
    Refined interiors that blend materiality, lighting, and detail with the bones of the architecture.
  • Custom Residential & Boutique Commercial Projects
    Designs that reflect both individuality and intention, ranging from private homes to small-scale hospitality and multifamily projects.

At the heart of our work is a commitment to creating spaces that are as functional as they are beautiful, always rooted in the unique identity and rhythm of each client’s life.

Design begins with function, and at Designs By Casandra, we bring beauty, intention, and flow into every space. This is where your dream project becomes a reality.

Our Promise to You

At Designs By Casandra, our promise is simple: We treat every project as if it were our own.

We are committed to delivering thoughtful, functional, and timeless design with every detail tailored to your lifestyle, your vision, and your needs. Whether designing a home, a retreat, or a commercial space, we listen first, plan with intention, and execute with precision.

You can expect:

  • Clear communication at every step of the process
  • Creative solutions rooted in architecture and design expertise
  • Spaces that feel like you not like anyone else
  • A seamless experience from concept to completion
  • Integrity, professionalism, and care in everything we do

This is more than design, it’s a collaboration built on trust.

Our Core Values

At Designs By Casandra, our design philosophy is rooted in values that guide every decision, detail, and relationship. These are the principles we live by and what you can expect when you work with us:

We hold ourselves to the highest standards of design quality. Every project is approached with discipline, precision, and a commitment to timeless beauty.

We believe in the power of original thinking. Our design process is fueled by fresh ideas, bold concepts, and a passion for creating spaces that inspire and surprise.

Thoughtful space planning is at the heart of what we do. We design spaces that flow intuitively and serve the unique rhythms of our clients’ lives.

We are committed to responsible design practices, incorporating sustainable materials, energy-efficient systems, and long-term thinking into every project.

Honesty and trust are the foundation of every successful collaboration. We communicate openly, act ethically, and always prioritize our clients’ best interests.

No two clients are the same, and neither are our solutions. We take the time to understand your lifestyle, your needs, and your dreams and bring them to life with care.

With roots in the Dominican Republic and experience across the United States, we approach design with cultural awareness and an appreciation for diverse aesthetics and traditions.

Great design is the result of great teamwork. We work closely with trusted contractors, artisans, and consultants to ensure every detail is executed to perfection.

These values are not just part of our process, they’re the reason our clients trust us to bring their vision to life