The Marsten Group


Sell Buy

Bespoke, Personal and Concierge-Level Service

Imagine a real estate group that pays attention to every detail, provides extraordinarily intelligent advice, successfully guides each client to achieve their unique quest and does so with consistence all while having fun. This vision defines The Marsten Group at Compass Real Estate.

We’re dedicated to understanding our clients’ individual needs and providing them with exceptional real estate experiences. We put each unique client at the center of the process, delivering superior service with insight, innovation, honesty and integrity.

The Marsten Group provides you with prompt, personal and effective attention, providing the devotion and flexibility that every consumer should demand.


About Marian

Bringing over 11 years of domestic and international corporate business acumen to each transaction, Marian Marsten Rosaaen helps clients develop a real estate strategy designed to reach their financial goals using current market data, cost-to-value comparisons and quantitative analysis. With extensive experience in marketing, finance and negotiation, she is able to cut through complex issues and help guide decisions with professionalism and focus.

Born in St. Louis, Missouri and raised in Vero Beach, Florida, Marian has called the Washington, DC area home for the past 15 years. When not reading the latest business book or real estate article, she can be found swimming, biking and running around town with fellow members of the Snapple Triathlon Club, DC Road Runners Club and giving back to local charities like the Martha’s Table and Georgetown Ministries.

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Licensed in District of Columbia, Maryland and Virginia


We offer:

We believe that true talent and personality brings you the best outcome in your real estate experience.

Professional and Trade Resources

Navigating the logistics takes a masterful approach, which is why we offer the very latest on financial programs, market research data and educational opportunities.

Comprehensive Investment Analysis

We analyze all facets of the real estate investment planning process and provide a thorough assessment and consultation from start to finish.

Rental and Leasing Services

Whether you’re in the market to rent or lease your property, we work in concert with you to evaluate the property and make the smartest and most informed decisions. 

Custom and Global Property Marketing

In today’s competitive market, its important to understand the marketing landscape and the best resources and tools to successfully promote your home. 




Selling isn’t easy

Finding new owners for your home doesn't have to be difficult. We believe in the pragmatic approach to selling.

To us, it's about precision

Making the right decisions, at the right time

Understanding the value of your home

Forward-thinking outlook on the market

It's collaboration, not consultation

Working together to achieve your real estate goals




Browse Our Homes

We represent some of the most diverse and unique properties in the Washington DC Metropolitan area. Find something you're interested in and let's discuss. We do our best to offer you the best real estate and carefully curate these offers. Please stay tuned for new properties.

3422 Porter St NW

3422 Porter St NW

Single Family
1333 Constitution Ave NE, B

1333 Constitution Ave NE, B


contact us

Compass agents partner with you throughout your home search, providing their expertise and deep knowledge of the greater Washington DC area real estate market to help you find a home you love.