Specialties

Buyer's Agent, Listing Agent, New Construction, Land Development

Education

Temple University - Fox School of Business - Entrepreneurship
Skidmore College - School of Business - Division III Ice Hockey
Radnor High School - 4 Year Varsity Letterman - Ice Hockey 

General Contracting License - State of Pennsylvania 
U.S. Green Building Council - Certified 

Charity

Radnor Township - Design Review Board - Member of the Board (2015 - Present)
Radnor Township - Historic & Architectural Review Board - Member of the Board (2025 - Present)
 

Client Testimonials

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"Collin and Colleen deliver results! We searched for a long time for our forever home in a very competitive market. Collin found us our dream home, and he acted quickly to tour the home, meet with the sellers and put in an offer. Collin and Colleen also represented us on the sale of our home. Colleen thoughtfully staged it to appeal to a broad audience, they marketed aggressively, and above all, they were responsive and considerate throughout the process. Their support and service continued even after closing, with design support and construction advice and resources. We highly recommend this dynamic team!" - Alison M.

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"I could have sold the property myself as a licensed agent, but I hired Collin and Colleen because they are true local market experts and I knew they would work relentlessly to market and showcase the home in the best possible light, which they absolutely did. What really stood out was their effortless approach to hosting open houses at every turn, making sure the property had maximum exposure, and their ability to bring in top notch talent for everything needed along the way. Their deep knowledge of Wayne and the surrounding market made a huge difference, as Collin’s grasp of comparables and buyer trends helped tremendously during negotiations, and they positioned the home perfectly to achieve the results we hoped for in just 12 days compared to the 45 day average for similar properties in Radnor. I would recommend Collin and Colleen in a heartbeat. They are not the kind of agents who simply put a sign in the yard and wait. They are out there every day working tirelessly on behalf of their clients, and that level of dedication is truly rare and made all the difference for us." - Will L.

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"Selling my aunt and uncle’s unique 1970s modern split-level home in Malvern, originally built by an architect as his personal residence, was no small task. As only the second owners, it was a special house that needed just the right buyer. A trusted neighbor in Margate, who’s a real estate agent, referred me to Collin and Colleen, and from the very first meeting, I knew they were the perfect fit. They introduced us to Compass’s Private Exclusive marketing strategy, which kept the home off the MLS to provide the privacy we needed while allowing us to schedule showings around limited on-site nursing care. Collin and Colleen’s professionalism, attention to detail, and ability to highlight the home’s uniqueness were exactly what this sale required. They found the perfect buyer and made the entire process feel seamless and stress-free. Their honesty, expertise, and genuine care set them apart, and I couldn’t have asked for better agents. I highly recommend them!" - Nicole P.

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"Collin is an exceptional realtor with extensive knowledge of the market. His genuine care for our needs made him invaluable throughout the entire process. From understanding our preferences to negotiating the best deals, Collin consistently exceeded our expectations. He was always available to answer our questions, provide guidance, and offer support, ensuring that we felt informed and empowered every step of the way. Collin's expertise, professionalism, and dedication made our home buying experience nothing short of remarkable. We highly recommend him to anyone seeking a realtor who is not only knowledgeable and experienced but also genuinely passionate about helping their clients achieve their real estate goals." - Sai M.

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"Collin is very knowledgeable of both the area and the industry and combined with his deep roots in construction he's very capable of assessing a property value. In a tight & hot market his breadth and depth of knowledge is paramount in securing the right property at the right price. The same can be said from a seller’s perspective as well. In addition, his responsiveness and eagerness to assist is truly one of a kind - a one stop shop." - Adam A.

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"After working with Collin (and team) to buy our new house, given the great experience, we tapped him to sell our old house. Collin handled all the logistics of the sale making the process incredibly smooth. He arranged staging, coordinated professional photography (as well as drone footage), managed contractors for repairs, and ensured that our house was presented in the best possible light. Thanks to his efforts, the house was under contract within days of being listed – and at the asking price! I can't recommend Collin enough for anyone looking to buy or sell a home. His proactive approach, understanding of the market (and pricing strategies), attention to detail, and constant communication make a big difference." - Scott

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"My wife and I had the pleasure of working with Collin (and his team) to find our new home in a very competitive market, and we were extremely impressed with the level of service, attention to detail, and expertise he provided throughout the entire process. We worked together for over a year, and Collin was incredibly proactive throughout. He took the time to understand exactly what we were looking for and made sure to only highlight properties that aligned with our needs and preferences. Collin is extremely responsive. No matter the time of day, he answers questions promptly and diligently. He truly understands the local real estate landscape and is able to provide valuable insights on pricing, trends, and the dynamics of each neighborhood down to the street level. Collin also has a fantastic network of contacts and experience developing homes, so he was able to leverage his connections and experience to expedite the process (e.g., recommending trustworthy inspectors and contractors, highlighting top mortgage brokers, etc.) and provide invaluable feedback on costs to re-build/renovate or repair items in all the houses we toured. I highly recommend Collin to anyone looking for a real estate agent who goes above and beyond. His professionalism, market knowledge, expertise, and dedication to his clients made all the difference in our home search." - Scott

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"We couldn't be luckier to have found Collin in our home search. After years in the city, and with a growing young family, we needed to find our home – with space! – in the suburbs. Collin helped us explore many different parts of the Philadelphia 'burbs and toured many homes with us. He was able to communicate in a timely and helpful manner, and brought his expertise to the forefront in so many ways throughout the process. We couldn't recommend him more to families looking for their forever home!" - Fitz M.

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"Collin Whelan was amazing to work with as a first-time buyer: he was knowledgeable, responsive, and transparent. As you can imagine, I had a lot of questions and concerns while embarking upon the daunting tasks of purchasing a home and sourcing vendors. Collin was there every step of the way, and kept us in the loop with texts, emails, and phone calls throughout the process, and he made sure there was as little friction as possible. Never underestimate the value of working with someone who is both friendly and a great communicator! I couldn't recommend Collin more: he took the stress out of home buying." - Beth F.

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"We embarked upon this journey to buy a home in Philadelphia for our son David and his wife Beth from our kitchen table Labor Day weekend in Rehoboth Beach De. We settled Friday Sept 27th with Collin in attendance at settlement after he sponsored morning walk-through with the kids. ( All this while his personal property in Florida was underwater due to Hurricane Helene.) Collin was responsive to every inquiry and request. Does he ever sleep?? From assisting us with finding local venders to actually monitoring their work on site he was a joy to work with. He assisted us in actual corrections to some documents from Compass . Overall...this was a 5 star experience and we would wholeheartedly recommend Collin and his team to any homebuyer." - Stephen F.

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"ā€œSimply the best! We worked with Collin to sell our home and to buy our dream home. Collin was an excellent guide through the buying and selling process and provided us with valuable insight. Working with an experienced agent like Collin allowed us to purchase a home in a highly sought after neighborhood and get the maximum value for the property we sold. I would recommend anyone looking to buy or sell give Collin a call!ā€." - Liam K.


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About Collin

Collin and Colleen Whelan are full time real estate professionals with Compass who combine deep Main Line roots, hands on construction expertise, and a best in class marketing approach to help clients buy and sell with confidence.

They live in Wayne, grew up in Radnor Township, and are raising their daughters in the same community they proudly represent. As a husband and wife team, clients benefit from two dedicated agents working seamlessly together with constant availability and clear communication.

What truly sets Collin and Colleen apart is their background in residential construction, design, and staging. Through their company, Poplar Construction + Design, they have built new homes, renovated numerous properties, and guided clients through improvements that meaningfully increase value. This experience allows them to evaluate potential, advise on smart design decisions, and understand the real cost and return of upgrades in a way few agents can.

Collin serves on both the Radnor Township Design Review Board and the Historic and Architectural Review Board, providing firsthand insight into local zoning, architectural trends, and the evolving character of Main Line neighborhoods. This involvement ensures clients receive guidance grounded in practical knowledge, not guesswork.

With Compass, Collin and Colleen leverage industry leading technology and the Private Exclusive platform to generate demand before a home ever reaches the MLS. Their tailored marketing strategy includes cinematic video, drone fly throughs, professional photography, floor plans, and targeted digital campaigns that consistently resonate with buyers.

Whether representing a luxury listing, advising an investor, helping a family relocate, or guiding a first time buyer, Collin and Colleen bring unmatched local expertise, construction clarity, and a comprehensive understanding of how homes are designed, built, and sold on the Main Line.