Cidades 21 English

C21 is a communications agency focused on content, positioning, relationship management, and strategic intelligence.

We develop strategies alongside our clients, turning communication into a tool for business development and opportunity creation.

What We Do

Digital Content

Strategic social media content, combining creativity and authority.

Positioning

Strategy, reputation, and international recognition for companies.

Relationship Management

Reputation building for C-suite executives, investor relations, and stakeholder engagement.

Strategic Intelligence

Context analysis, mapping, advocacy, and crisis management.

Who We Are

Founding partners Flora Monteiro and Mariana Barros have more than 20 years of experience in communications. Over the years, they have built:

Expertise and Authority

Close ties to the market, a broad knowledge base, and a highly qualified network across real estate development, architecture, and design.

Lasting Relationships

We build relationships based on trust, ongoing dialogue, and a deep understanding of each client.

Our team brings together professionals from communications, architecture, design, and marketing to deliver consistent, well-grounded work.

Who We Work With

C21 Content

The ideas and people transforming life in cities. Architecture, urbanism, and real estate viewed through the lens of urban culture, behavior, and business development.

Reports

Periodically, we take a deep dive into a strategic topic to spark new perspectives, inspire conversations, and contribute to development and new business opportunities.

Communications Agency Social Media, Digital Marketing Public Relations, Positioning Content & Strategy