The Agency Marbella - Belleside Real Estate
About The Agency Marbella

The Belleside Team

Our journey started in the 1970s with the visionary entrepreneur Richard Orthmann, and today, it’s led by his sons, Leif and Finn Orthmann. As a family-owned enterprise, we’ve evolved into a vibrant team of real estate professionals representing over 12 nationalities, reflecting the dynamic multicultural essence of Marbella.

The origin of The Belleside Team stems from a gap we identified as real estate developers—a need that was not being met by other agencies in the area. This led to the creation of The Agency Marbella, established to offer a professional service focused on homeowners who demand the highest level of professionalism and dedication when selling their property to the most suitable buyer. Our goal is to ensure that each transaction is handled with the utmost care and precision, matching each property with the ideal purchaser.

The Agency for Owners

We are a seller-focused agency that pairs high-value properties with suitable buyers. Our current portfolio includes a range of luxurious properties, from modern villas in Marbella’s Golden Mile district to exclusive estates across Southern Spain. The properties we manage are priced from about $1 million to over $50 million, each chosen for quality, location, and investment potential.

Tailored Services for Sellers

At The Agency Marbella – The Belleside Team, we recognize that every seller has unique requirements. That’s why we take a personalized approach to real estate. Our diverse team, with its deep understanding of the local market and ability to cater to a wide range of cultural expectations, is well-equipped to meet your needs. We offer comprehensive market analyses, strategic marketing plans, and a seamless selling process that matches each property with its ideal buyer.

Why Marbella?


Marbella, a city chosen for its breathtaking scenery and luxurious lifestyle, is the privileged setting for our operations. This exclusive city, a melting pot of cultures, offers a unique living environment perfect for our global clientele seeking distinctive, high-value properties.

Marbella exudes cosmopolitan elegance, offering diverse lifestyle options. From  Puerto Banus, glamorous marina to serene mountain retreats, Marbella boasts the allure of luxury living. Imagine a sunrise stroll on the beachfront, a leisurely coffee with a view of mega-yachts, and a sunset that silhouettes your mountain villa. Marbella blends a sophisticated social hub with private, lush estates to cater to every whim. Live a life of indulgence, enveloped in luxury amidst Marbella’s plush locales.

Our Corporate Culture

The Agency Marbella has a corporate culture centered around core values. Our values drive excellence and integrity in the real estate market. We hold ourselves to the highest ethical standards, ensuring that all interactions and transactions are transparent and honest. This foundational integrity helps us build trust and earn respect from both clients and collaborators. To stay at the forefront, we are committed to innovation, utilizing cutting-edge technologies and creative approaches to enhance our real estate services and exceed client expectations.

We prioritize customer-centricity, tailoring our services to meet individual client needs and delivering exceptional results in every project. Our collaborative environment fosters teamwork and respect, essential for internal harmony and building successful client relationships. Continuous improvement is integral to our operations as we adapt to market trends and client needs, ensuring we remain a trusted and dynamic real estate partner in Marbella. These values guide our daily operations and shape our identity, reinforcing our mission to lead with innovation and integrity.

Real estate isn’t
just business.
It’s personal.