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Unlock Exclusive Buyer Opportunities with Marc at Compass

As a Compass agent based in Washington, DC, Marc provides his buyer clients with unparalleled access to Private Exclusive listings, off-market properties, and proprietary brokerage networks. These homes aren’t publicly available on the MLS, giving buyers a competitive edge in today’s fast-moving market. Marc also proactively advertises buyer needs within the real estate community — ensuring every possible opportunity is explored.
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Compass Search Portal

A Smarter Way to Find Your Home

Search with confidence using the Compass platform, an industry-leading portal designed to streamline your home search experience. With customized alerts, real-time updates, and intelligent filters, you’ll have all the tools you need to find the right property — before it hits the broader market.

Ask Marc Anything About Real Estate

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Full-Service Buyer Support

From Start to Close — And Beyond

Marc is more than just your real estate agent — he’s your advocate and guide through every stage of the process. From the initial home search to negotiation, inspection, and closing, and even after the keys are in hand, Marc is there to support you. His goal is not just to help you buy a home, but to build a lifelong relationship rooted in trust, integrity, and results.

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Your Network Begins Here

Trusted Local Resources

Marc connects his clients with top-tier local professionals, including:

  • Trusted Title Companies
  • Knowledgeable Lenders
  • Thorough Home Inspectors
  • Reliable Contractors & Vendors

These trusted relationships help ensure your transaction is smooth, transparent, and stress-free.

Making Moves, Changing Lives

Success Stories

"Marc was conducting an open house in our neighborhood on behalf of a colleague. We were so impressed with him that we asked him to visit us and discuss strategies for selling our house. Mark worked with us for a year and a half, advising us on preparing our house and property for sale. The house sold for considerably more than the asking price on the day it was listed. We attribute this to Marc's expertise in preparing the house for sale and to his formidable negotiating skills. Marc made himself available on short notice on numerous occasions as we worked through the tedious business of preparing the house and property for sale. He recommended an inspector and a general contractor, both of whom proved highly satisfactory as to price, schedule, and competence. We recommend him without reservation if you are seeking to purchase or sell a home. Highly likely to recommend!"
"Marc was conducting an open house in our neighborhood on behalf of a colleague. We were so impressed with him that we asked him to visit us and discuss strategies for selling our house. Mark worked with us for a year and a half, advising us on preparing our house and property for sale. The house sold for considerably more than the asking price on the day it was listed. We attribute this to Marc's expertise in preparing the house for sale and to his formidable negotiating skills. Marc made himself available on short notice on numerous occasions as we worked through the tedious business of preparing the house and property for sale. He recommended an inspector and a general contractor, both of whom proved highly satisfactory as to price, schedule, and competence. We recommend him without reservation if you are seeking to purchase or sell a home. Highly likely to recommend!"
John & Mary Hall
"As an experienced homeowner, I had a lot to learn and unlearn about buying real estate when I moved from the midwest to DC. I went to numerous open houses, met several realtors and Marc was the only one who impressed me immediately with follow through and genuine interest in my real estate needs. I’ll admit I wasn’t the easiest client but Marc was immensely patient and very responsive as we honed in on that delicate balance between finding what I wanted while staying in my price range. When we finally found my next home he impressed me once again, this time with his 10-star negotiating skills, locking in on a sweet deal on a large condo in a great neighborhood. Marc is a very savvy realtor, willing to work hard and smart to meet the needs of his buyer, which is especially important in this fast-paced seller’s market. Beyond all his great talents as a realtor, Marc is genuinely a pleasure to work with. I will be contacting Marc again when it comes time to sell."
"As an experienced homeowner, I had a lot to learn and unlearn about buying real estate when I moved from the midwest to DC. I went to numerous open houses, met several realtors and Marc was the only one who impressed me immediately with follow through and genuine interest in my real estate needs. I’ll admit I wasn’t the easiest client but Marc was immensely patient and very responsive as we honed in on that delicate balance between finding what I wanted while staying in my price range. When we finally found my next home he impressed me once again, this time with his 10-star negotiating skills, locking in on a sweet deal on a large condo in a great neighborhood. Marc is a very savvy realtor, willing to work hard and smart to meet the needs of his buyer, which is especially important in this fast-paced seller’s market. Beyond all his great talents as a realtor, Marc is genuinely a pleasure to work with. I will be contacting Marc again when it comes time to sell."
Nancy Whiting
"Marc Cowan has his client’s best interests at heart! He went above and beyond the duties of a real estate agent. He tries to make the selling process as stress-free as possible. I highly recommend him."
"Marc Cowan has his client’s best interests at heart! He went above and beyond the duties of a real estate agent. He tries to make the selling process as stress-free as possible. I highly recommend him."
Nicole Pak
"We, my wife and I, signed on with Marc to sell our house in early May and after about a month of interior fix-up (see below) the house was effectively sold by mid-July, and for a very good price. What was most remarkable about the service Marc did for us is that he actually had the house sold, for a very good price, before it was ever listed on the MLS. This saved me a bundle of expenses that would have otherwise come along had the sale gone what I take is the more typical route of being "staged" with (expensive) rental furniture for a possibly extended period of time. Furthermore, Marc was particularly good at responding to adversity and setbacks with successful solutions. He did that for us more than once, to our financial benefit. Further, he was most helpful in advising us and setting us up with interior decorating services to fix up our 25+-year-old, and well-lived, home to make it "like new", which certainly was significant in achieving the very rapid sale. Marc gladly took care of a lot of coordination with the decorators for us as we had moved some 60 miles away shortly after signing on and couldn't do much in person. He made it happen. Highly recommended! Highly likely to recommend!"
"We, my wife and I, signed on with Marc to sell our house in early May and after about a month of interior fix-up (see below) the house was effectively sold by mid-July, and for a very good price. What was most remarkable about the service Marc did for us is that he actually had the house sold, for a very good price, before it was ever listed on the MLS. This saved me a bundle of expenses that would have otherwise come along had the sale gone what I take is the more typical route of being "staged" with (expensive) rental furniture for a possibly extended period of time. Furthermore, Marc was particularly good at responding to adversity and setbacks with successful solutions. He did that for us more than once, to our financial benefit. Further, he was most helpful in advising us and setting us up with interior decorating services to fix up our 25+-year-old, and well-lived, home to make it "like new", which certainly was significant in achieving the very rapid sale. Marc gladly took care of a lot of coordination with the decorators for us as we had moved some 60 miles away shortly after signing on and couldn't do much in person. He made it happen. Highly recommended! Highly likely to recommend!"
John & Laurie Stackpole
"Marc Cowan = Wow! My wife and I call the DMV home and decided that continuing to rent was money down the drain. We finally made up our minds to purchase our first home. Buying a home is a daunting task. There were so many hoops to jump through that it seemed almost impossible. With Marc, though, we were able to rest assured that things would get done. While interviewing agents, we wanted someone who had the savvy and knowledge to navigate the waters of buying a home. Along with that, we needed a realtor with the endurance to push through the challenges first-time buyers can bring and the grit to fight in a very competitive market. We interviewed several agents and Marc was our one and only unanimous decision. From the time, we met during our initial interview, we knew this was someone we could count on and who would put our best interest first. He arrived early for our initial meeting, looking dapper as always, with plenty of information for first-time home buyers, and we could tell he really wanted to get to know our family and our needs for our first home. The questions he asked and the information he gathered proved invaluable in finding the right home for our family. Looking for homes can be exhilarating and gruesome at the same time. Marc made it easy by sharing updated information about homes as quickly as possible. He always promptly responded to queries, even late at night. My wife had him on speed dial and often had many questions. Marc had no problem with this at all and gladly maintained constant contact to keep us updated on any happenings. He also guided us through the tough breaks when homes were listed and went under contract the same day and explained the market trends in terms that made sense to us. When we finally found the home we wanted, he wasted no time in pulling comps, calling the agent to get as much information as possible, and walking us through the possible scenarios we would face in our offer. At the end of the day, if you do not have a realtor who can negotiate on your behalf with both professionalism and tenacity, you may see homes slipping through your fingers. Marc’s ability to gain insight into the seller allowed us to make a reasonable offer on the home that we wanted. He had us write a personal letter explaining why we wanted the home and encouraged us to include a picture of our family to go with the offer letter. Pure genius! We ended up having our offer accepted even though we were not the highest bidders. We know that if we’d had a different agent or tried to tackle this on our own, we would not be in the house we are in today. Marc managed to negotiate hard after the inspection was done and all major points of contention were taken care of by the seller and listing agent. Marc is extremely professional, dependable, attentive, patient, and overall a pleasure to work with. He is the complete package in an agent. Without a doubt, we felt he was representing us and was constantly looking out for our best interests. He also has extensive contacts with different vendors such as inspectors, appraisers, title companies, and other professionals that you’ll need to work with during the process of buying a home. All the vendors that he recommended have also been very dependable and great to work with. We are so grateful to Marc and have already highly recommended him to many of our friends and colleagues. You won’t regret choosing Marc for any of your realty needs!”"
"Marc Cowan = Wow! My wife and I call the DMV home and decided that continuing to rent was money down the drain. We finally made up our minds to purchase our first home. Buying a home is a daunting task. There were so many hoops to jump through that it seemed almost impossible. With Marc, though, we were able to rest assured that things would get done. While interviewing agents, we wanted someone who had the savvy and knowledge to navigate the waters of buying a home. Along with that, we needed a realtor with the endurance to push through the challenges first-time buyers can bring and the grit to fight in a very competitive market. We interviewed several agents and Marc was our one and only unanimous decision. From the time, we met during our initial interview, we knew this was someone we could count on and who would put our best interest first. He arrived early for our initial meeting, looking dapper as always, with plenty of information for first-time home buyers, and we could tell he really wanted to get to know our family and our needs for our first home. The questions he asked and the information he gathered proved invaluable in finding the right home for our family. Looking for homes can be exhilarating and gruesome at the same time. Marc made it easy by sharing updated information about homes as quickly as possible. He always promptly responded to queries, even late at night. My wife had him on speed dial and often had many questions. Marc had no problem with this at all and gladly maintained constant contact to keep us updated on any happenings. He also guided us through the tough breaks when homes were listed and went under contract the same day and explained the market trends in terms that made sense to us. When we finally found the home we wanted, he wasted no time in pulling comps, calling the agent to get as much information as possible, and walking us through the possible scenarios we would face in our offer. At the end of the day, if you do not have a realtor who can negotiate on your behalf with both professionalism and tenacity, you may see homes slipping through your fingers. Marc’s ability to gain insight into the seller allowed us to make a reasonable offer on the home that we wanted. He had us write a personal letter explaining why we wanted the home and encouraged us to include a picture of our family to go with the offer letter. Pure genius! We ended up having our offer accepted even though we were not the highest bidders. We know that if we’d had a different agent or tried to tackle this on our own, we would not be in the house we are in today. Marc managed to negotiate hard after the inspection was done and all major points of contention were taken care of by the seller and listing agent. Marc is extremely professional, dependable, attentive, patient, and overall a pleasure to work with. He is the complete package in an agent. Without a doubt, we felt he was representing us and was constantly looking out for our best interests. He also has extensive contacts with different vendors such as inspectors, appraisers, title companies, and other professionals that you’ll need to work with during the process of buying a home. All the vendors that he recommended have also been very dependable and great to work with. We are so grateful to Marc and have already highly recommended him to many of our friends and colleagues. You won’t regret choosing Marc for any of your realty needs!”"
Lance & Luz Mercier
"Marc was a dream to work with! From the first impression to my closing, Marc was professional, dependable, responsive, and overall the total package. Additionally, Marc was very intuition about the DC market and sold my condo after only 1 open house and got a $30,000.00 over the list price. He's a professional, a gentleman and now I can say, friend! I would highly recommend using Marc to help you sell your home or find you a new one."
"Marc was a dream to work with! From the first impression to my closing, Marc was professional, dependable, responsive, and overall the total package. Additionally, Marc was very intuition about the DC market and sold my condo after only 1 open house and got a $30,000.00 over the list price. He's a professional, a gentleman and now I can say, friend! I would highly recommend using Marc to help you sell your home or find you a new one."
S. Lenkin
"From the moment we met, Marc was a consummate professional. He was friendly and engaging and got to know us as a couple to better understand the home we were looking for. My husband and I had experience buying a home, but it had been more than a decade and was in a very different market, so we appreciated Marc's guidance and expertise in the DC metro market. Marc made himself available at all hours of the day and night to answer our questions. Our primary goal was to find a house with good bones that we could remodel to make it ours. Marc showed us several homes in the area and discussed remodel potential of several of them. When we found the one, Marc worked to get our many questions about the property answered by contacting the listing agent. Marc utilized his powerful negotiation skills to get us a great deal on the price and we couldn't be happier. He made the entire experience of house hunting and home buying a joy. Marc helped us find our perfect home and became our friend in the process."
"From the moment we met, Marc was a consummate professional. He was friendly and engaging and got to know us as a couple to better understand the home we were looking for. My husband and I had experience buying a home, but it had been more than a decade and was in a very different market, so we appreciated Marc's guidance and expertise in the DC metro market. Marc made himself available at all hours of the day and night to answer our questions. Our primary goal was to find a house with good bones that we could remodel to make it ours. Marc showed us several homes in the area and discussed remodel potential of several of them. When we found the one, Marc worked to get our many questions about the property answered by contacting the listing agent. Marc utilized his powerful negotiation skills to get us a great deal on the price and we couldn't be happier. He made the entire experience of house hunting and home buying a joy. Marc helped us find our perfect home and became our friend in the process."
M. Humphreys
"Marc was amazing to work with and helped us navigate the entire buying process. From meeting him at an open house to working together and eventually completing a purchase, he was very knowledgeable and very professional. We would highly recommend him!"
"Marc was amazing to work with and helped us navigate the entire buying process. From meeting him at an open house to working together and eventually completing a purchase, he was very knowledgeable and very professional. We would highly recommend him!"
P. Arnold
"Marc was and is phenomenal! When considering selling your home, or even buying, you’re often left With the uncertainty of who best to represent you as your agent. I floated the question on social media among my friends or colleagues and the one name to be referenced multiple times was Marc Cowan. With no exaggeration, Marc is a consummate professional and a pleasure to work with. Marc was always a phone call away and always in constant contact giving updates and detailing his strategy for the next week. From the introduction to sale, Marc worked tirelessly and effectively to sell my house – even getting his hands dirty to weed out my patio. Marc also understands the DMV market, how to best present home to get the best possible price and meet the seller's expectations. Marc's other asset is that he approaches his business as building a relationship, not a one-off interaction. I will definitely look for Marc to help me with my next home and will continue to be my endorsement for a realtor to all my friends and colleagues."
"Marc was and is phenomenal! When considering selling your home, or even buying, you’re often left With the uncertainty of who best to represent you as your agent. I floated the question on social media among my friends or colleagues and the one name to be referenced multiple times was Marc Cowan. With no exaggeration, Marc is a consummate professional and a pleasure to work with. Marc was always a phone call away and always in constant contact giving updates and detailing his strategy for the next week. From the introduction to sale, Marc worked tirelessly and effectively to sell my house – even getting his hands dirty to weed out my patio. Marc also understands the DMV market, how to best present home to get the best possible price and meet the seller's expectations. Marc's other asset is that he approaches his business as building a relationship, not a one-off interaction. I will definitely look for Marc to help me with my next home and will continue to be my endorsement for a realtor to all my friends and colleagues."
E. Atcheson
"We highly recommend Marc, knowledgeable, patient, extremely professional, and a first-class communicator, who listened to and understood our needs. He was an incredible support throughout the process always going above and beyond our expectations. A superb 'find' as a realtor."
"We highly recommend Marc, knowledgeable, patient, extremely professional, and a first-class communicator, who listened to and understood our needs. He was an incredible support throughout the process always going above and beyond our expectations. A superb 'find' as a realtor."
A. Ash
"Without warning, we found ourselves either buying a home in less than 30 days or being homeless. I can't tell you how lucky we were to find Mark at an open house he was hosting for another realtor. He saved us from an incredibly trying position. Not only holding off pressure from our landlord who wanted us to buy their property for far more than it was worth, but also helping us find our new home. If we contacted Mark, no matter what time of day, he was there for us, often within minutes of us reaching out to him. His knowledge of the local area market and extensive contacts with inspectors, appraisers, title companies, vendors, and other professionals is incredible. And those he recommends have been consistently the most capable, professional, and helpful people we've known. His insight and acumen about market prices were proven spot-on to us over and over again. And when we found the home we wanted, he managed to not only get us the price we wanted, but also the assurance we weren't getting any unpleasant surprises. Amazingly, he even got us moved into our new home before closing was completed. This almost unheard-of feat honestly saved us more in moving costs than he likely made in commission. Mark cares deeply about both his customers and his industry and takes pride in consistently providing nothing but the highest quality professional service. I cannot recommend him highly enough. And while I have no plans to move, I know that if I ever do, I will never make the mistake of working with anyone else."
"Without warning, we found ourselves either buying a home in less than 30 days or being homeless. I can't tell you how lucky we were to find Mark at an open house he was hosting for another realtor. He saved us from an incredibly trying position. Not only holding off pressure from our landlord who wanted us to buy their property for far more than it was worth, but also helping us find our new home. If we contacted Mark, no matter what time of day, he was there for us, often within minutes of us reaching out to him. His knowledge of the local area market and extensive contacts with inspectors, appraisers, title companies, vendors, and other professionals is incredible. And those he recommends have been consistently the most capable, professional, and helpful people we've known. His insight and acumen about market prices were proven spot-on to us over and over again. And when we found the home we wanted, he managed to not only get us the price we wanted, but also the assurance we weren't getting any unpleasant surprises. Amazingly, he even got us moved into our new home before closing was completed. This almost unheard-of feat honestly saved us more in moving costs than he likely made in commission. Mark cares deeply about both his customers and his industry and takes pride in consistently providing nothing but the highest quality professional service. I cannot recommend him highly enough. And while I have no plans to move, I know that if I ever do, I will never make the mistake of working with anyone else."
E. Cherry
"Marc Cowan is an exceptional real estate agent—polished, strategic, and results-driven. Thanks to his expertise and the Compass Private Exclusive process, we sold our home before even listing it, with multiple offers far exceeding our list price—all within 48 hours! Marc guided us every step of the way, connecting us with top-tier contractors, ensuring our home was perfectly positioned, and negotiating masterfully on our behalf. His professionalism, poise, and attention to detail made the entire experience seamless and stress-free. If you're looking for an agent who delivers extraordinary results with class and integrity, Marc Cowan is the one to trust!"
"Marc Cowan is an exceptional real estate agent—polished, strategic, and results-driven. Thanks to his expertise and the Compass Private Exclusive process, we sold our home before even listing it, with multiple offers far exceeding our list price—all within 48 hours! Marc guided us every step of the way, connecting us with top-tier contractors, ensuring our home was perfectly positioned, and negotiating masterfully on our behalf. His professionalism, poise, and attention to detail made the entire experience seamless and stress-free. If you're looking for an agent who delivers extraordinary results with class and integrity, Marc Cowan is the one to trust!"
Marcio & Carlos

Your Next Chapter Starts Here

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