Northern Virginia Real Estate Experts

The Alliance Group

Local Expertise. Global Connections.

DC Real Estate Experts

The Alliance Group

Local Expertise. Global Connections.

Maryland Real Estate Experts

The Alliance Group

Local Expertise. Global Connections.
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Meet the Team

The Alliance Group is a top-producing team of real estate professionals in the McLean, VA office of TTR Sotheby’s International Realty. Our team provides an unrivaled level of exceptional customer service and powerful results to our clients at all price points, across the entire Washington, DC metro region. With an unrelenting focus on meeting the real estate needs of our globally-minded clients, The Alliance Group is uniquely qualified to be your advocates and your allies as you navigate your own personal real estate journey.

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Our Mission

The Alliance Group will change how luxury home buyers, sellers, and global investors in Northern Virginia, Maryland, and Washington, DC.  think about real estate. Our team delivers unparalleled professionalism, offers exclusive insights, and wields in-depth market knowledge. With meticulous attention to detail, we go beyond expectations, providing a top-tier experience that extends well beyond the closing of a deal. Who you work with, matters. Working with The Alliance Group of TTR Sotheby’s International Realty will redefine your expectations.  Our comprehensive end-to-end services, spanning before, during, and after each sale, set a new standard that's truly unparalleled.

Your trusted real estate experts proudly serving the DC metro region.

The Alliance Group is a top-producing team of real estate professionals with TTR Sotheby’s International Realty, and proudly provides luxury service to homes of all price points across the entire DMV region. With associates licensed locally in Virginia, Washington DC, and Maryland, and personal connections within a network of 22,000 Sotheby’s agents that spans 72 countries, there is no other team better suited to serve the real estate needs of Washington DC’s globally-minded clientele.

#1

Sotheby´s Team in McLean

50+

Years of Combined Experience

1100+

Lifetime Families Served

Top 1.49%

Of All Agents Nationwide

Selling a Home?

Find out what your home is really worth.

Buying a Home?

Browse our properties in the area.

Our Testimonials

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Joseph A.

Tracy is the real deal! She understands every aspect of the buying and selling process, from home inspections to market dynamics to negotiation, to handling curve balls of any type (which there always are). In addition to selli...
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Bradley & Jennifer F.

Joshua is not the first realtor we have worked with, but he is absolutely the best!! With Joshua's guidance and expertise, we had the smoothest purchase we've ever experienced. He hit absolutely every point on target, on time, ...
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Mary J.

Holly did a fabulous job in helping us find our home. We were living in India when we bought our house. Holly was thoroughly professional, extremely helpful and very responsive despite the 9.5 hour time difference. She helped u...
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Dave K. & Liz B.

When my wife and I first started working with Joshua we knew that we would be selling our townhouse and buying a condo, but we also had some very particular requirements (as well as some that we hadn’t yet really identified) an...
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Ashish D.

Joshua was great to work with. Very patient and detail-oriented through the whole home buying process. Joshua was very attentive to home structure both inside and out and provided sound judgement in providing insight to any iss...
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Tanya & Mike L.

Joshua helped my husband and me to find and purchase our first home and made the whole process smooth and low-stress. He responded very quickly to questions via email and text, always made time to look at houses very quickly af...
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Pat B.

Excellent customer service, work ethic, negotiation skills, as well as extremely understanding and tolerant. Tracy performed and delivered on all promises to include excellent marketing which resulted in a quick offer after ver...
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Mark H.

Tracy is truly amazing. She made the entire home buying experience near effortless for me. She found me exactly the house I wanted and locked in the deal in record time. I couldn't be happier with the entire experience.
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Amy M.

Authentic and relational, Tracy Williams directed a strong, focused, and organized campaign that sold my home quickly. Tracy is responsive and thorough; she anticipates and negates issues in advance with instinctive negotiatio...
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Matt H.

Joshua Baumgardner made first-time home buying a breeze. I bought my first condo in DC in February, and here is how I found Joshua: 1) He explained the process to me clearly and expertly. I didn't know much about the home-buyin...
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Brad L. & Jose E.

We have known Joshua for over 5 years and he has helped us sell several properties. He is a great Realtor® and extremely patient. He did such a great job advertising our home that it sold the same day it went on the market. Hig...
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Danny Z.

Joshua has diligently worked with me since Day 1 on a buying process that seemed to last forever (especially during COVID). You can count on texting, calling, emailing Joshua any time of the day with any question that may arise...
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Heather L.

I highly recommend Holly Tennant. She worked with me and husband when we were thinking of moving, but hadn’t fully committed to the idea. Despite our uncertainty, Holly jumped into action so we could assess our options. She was...
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Sarah R.

Holly and her team were great. We'd been in the same house for nearly 20 years with 4 kids and Holly worked around all that chaos. Patience is one of her virtues and she helps you work through the process of selling with great ...
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Sarah B.

Holly is the ideal Realtor®. She is extensively knowledgeable and resourceful, immediately responsive, and a pleasure to work with. She is committed and a great partner. Holly has supported us through 3 moves, and we have refer...
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Julia V.

When we decided we had outgrown our home, we turned to Holly Tennant Billy for assistance. We searched for homes. We considered renovating. We changed our minds back to buying. Finally, we decided to rebuild our home. She helpe...
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Murphy B.

Holly was incredible throughout the entire home buying experience. She made what can be a stressful and time-consuming affair, a pleasant and efficient experience. From the beginning, she listened intently to our requests, resp...
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Sean T.

Selling my father's condominium from the other side of the country filled me with apprehension even before the process started and then the pandemic hit. I was certain I'd have to fly across the country frequently at various mi...
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Jill K.

In a word, Holly Billy is a professional. In more words, she is the most ethical, empathetic and savvy Realtor® I have worked with. She helped us both buy and sell our home. We started off looking for a new home and after not f...
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Adrien P.

I had the privilege of working with Holly for the course of several years - she worked with my wife and I in a very challenging local market, with ever-escalating prices and a shortage of available homes. From "go," Holly was i...
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Work With Us

The Alliance Group provides a seasoned and experienced team of real estate professionals to guide our clients through the sales process while presenting insightful options to achieve their desired goals.

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