Mary Leader

Sales Associate



A fifth-generation landowner in Summit and Wasatch counties, Mary brings her extensive local and familial knowledge of the region to her work assisting clients with their real estate needs. She specializes in the Deer Valley and Park City vacation home markets, in addition to helping individuals and families who are settling in the greater Park City area. From new construction and first-time purchases, to preparing properties for sale, Mary is known for her personal attention to detail, always going the extra mile and providing guidance through each phase of the real estate process.

Prior to her real estate career, Mary spent many years on the West Coast dividing her time between Northern and Southern California. She developed strong negotiation skills from her work at the Department of Interior in San Francisco assisting with the management of one of the newest national parks, reaching amicable and favorable outcomes between the residents within the park and its surrounding communities. Returning to her roots in Utah, she obtained her real estate license and experienced success almost overnight. Mary became a top producer at a local boutique agency, and then at Prudential Utah Real Estate, before joining Summit Sotheby’s International Realty in 2013. She attributes her success to the long-term relationships she has nurtured with multi-generations of homeowners, neighbors, and local residents. This broad sphere of constituents allows her to frequently bring buyers and sellers together.

Mary utilizes innovative approaches for promoting properties with the creative assistance of the Summit Sotheby’s marketing team. Known locally for her hospitality and epicurean skills, Mary takes pride in introducing a property to the local real estate community, consistently exceeding her sellers’ expectations. She experiences tremendous satisfaction in assisting families to find their perfect vacation home where they can share memorable moments and start new traditions. She holds several real estate designations, inclulding Accredited Buyer Representative, Resort and Second-Home Specialist, Seller Representative Specialist, as well as an e-PRO Certification. Mary is also a connected and respected member of the Wasatch Front and Park City multiple listing services, and Luxury Real Estate, a real estate organization representing the luxury market worldwide.

Balancing a career with her commitment to serving the local non-profit community, Mary feels most fortunate to reside among the picturesque mountains surrounding Park City with her husband, Lindon, a well-regarded graphic designer. She also enjoys the time she’s able to spend with her two daughters, son-in-law, and grandchildren.

Business Details

Year Established

Regent Territory

Park City and Salt Lake City, UT


e-PRO Internet Professional, Resort & Second Home Property Specialist, Accredited Buyer Representative, Seller Representative Specialist, Certified Buyer Representative®

Service Areas


Additional Resources

Recent Blog Posts

Utah Real Estate Update for November 2020

Dec 23 - Mary Leader, Summit Sotheby's International Realty

Just Listed! Rarely Available Fairways Village Condo in Park City, UT

Jul 24 - Mary Leader, Summit Sotheby's International Realty

Just Reduced $40k! Charming Home & Horse Property with Two-Stall Barn in Park City, Utah

Aug 12 - Mary Leader, Summit Sotheby's International Realty


Thank you for the time, care and professionalism you have devoted to our purchase. I hope your boss appreciates you, because we do. I particularly appreciated the efforts you’ve taken to get the condo cleaned. It was lovely to come home to.

Sandra, Buyer

We have made a significant journey and its success was in great measure, the result of your talents. Throughout our work together you have demonstrated patience, attention to detail, assertiveness when needed and shrewd insights in the finer points of negotiation. We have only purchased two other homes in our lives. With this limited data, at all points on our journey, we have enjoyed your professional knowledge, your charm, courtesy and persistence. More than a professional, we consider you as a friend and want to thank you for the time you dedicated to moving us along.

Bob and Elaine, Buyers

We can say that this has been the most pleasant and professional home sale we have ever been a part of. The pricing and marketing were spot on. The sale itself was seamless. Thanks so much. If we are ever in the market here again, you will be our team.

Tom and Laura, Sellers

We cannot thank you enough for all your time and efforts on our wonderful new townhome! We could not have done this without you.

Clare and Sals, Buyers

Your most satisfied Connecticut client wants to wish you the best for the holidays. Thanks again for getting us the perfect house!

Kim and John, Buyers

We will always be grateful to you for showing us so many properties. You were very patient with us as we worked through what would be most practical. We are extremely pleased with our purchase.

Graeme, Buyer

Thank you so much for all the referrals you’ve sent me! Starting a business is tough and I really appreciate your help in building a client base.

Brandon, Local Vendor

Mary was very professional, helpful and knowledgeable of the Park City area. Even though the property I purchased was at a low price point, Mary was eager to help and treated me as she would have with a customer that had more money to spend. She was an asset when it came to negotiating and financing. When I arrived in Park City to spend the first weekend in my new condo I noticed Mary had bought bedsheets and towels for me, so I wouldn’t have to go shopping that night. I definitely thought that was beyond the “call of duty”. In the future when I sell or buy another property in Park City, I will give my business to Mary.

Mark, Buyer

Mary has boundless patience, consideration, good advice, care for her clients’ greater good and a much-appreciated sense of timeliness. By her diligence and persistence, she also saved us a considerable amount of money on HOA fines-inevitably served during our absence (as we live in Europe six months of the year) and thereby creating legal problems for us. The Seller had not honored his obligations in regard to completing the landscaping. Or, as the Seller himself put it with some bitterness, “Why didn’t my Realtor sort this out for me when I bought it?!

Sandra and David, Buyers

In the past few months we have had the privilege of working with Mary Leader on the purchase of a vacation home in Park City. Mary was referred to us by a local Realtor friend in Florida. We have bought or sold about 30 pieces of property, but never had a better experience with an individual based on her knowledge of the market, a sincere desire to serve her clients and a proper level of aggressiveness.

Howard and Nancy, Buyers

I have been a client of Mary Leader for several Real Estate transactions and have found her to be an excellent agent. She never misses anything, doing her job in an outstanding manner. My last transaction with her was the selling of a Fox Point condo which she accomplished in a very short time. Everything went very smoothly because she is careful and intelligent about her job.

Diana, Seller

We are grateful to work with such a professional as yourself and have enjoyed every interaction with your clients – they are delightful people.

Developer of New Construction in Park City

Mary, you are the most first-class agent peer I know. I am so grateful to have you as a friend and a love seeing your smiling face at work.

Summit Sotheby's International Realty Realtor

I’m grateful to know amazing people like you!

Leslie, Park City Mortgage Lender

In a complex real estate climate, it is important to partner with experienced problem-solvers like Mary Leader. Mary’s sellers were selling their lovingly upgraded townhome and my buyers were upgrading from another property in Lower Deer Valley. From negotiating a purchase price to gracefully navigating the sale of included furniture, I could count on Mary to coach her sellers on their expectations in order to come to equitable terms between the parties. Making it to the closing table requires finesse and collaboration, and I could unequivocally count on Mary for both. She is the rare agent who goes the extra mile to ensure that everyone gets to the closing table with their expectations exceeded. My buyers love their new home in Park City and I’d consider myself lucky to cross paths with Mary again soon.

Summit Sotheby's International Realty Realtor

Your knowledge and your high standards of practice, were recently instrumental in putting a transaction under contract for me. Thank you. When you sat next to clients of mine the other night at a function and they asked you real estate questions, your “third party opinion” put them at ease in their angst of decision making.

Local Park City, Utah Realtor

Thank you for everything you did to make this a smooth transition and get the job done. Like so many others, this was indeed a challenging transaction up to the very end and I appreciate your tenacity and sincere effort through to the very end. It was a pleasure working with you.

Local Park City Realtor

Thank you for everything you did to make this a smooth transition and get the job done. Like so many others, this was indeed a challenging transaction up to the very end and I appreciate your tenacity and sincere effort through to the very end. It was a pleasure working with you.

Fellow Agent

We can say that this has been the most pleasant and professional home sale we have ever been a part of. The pricing and marketing were spot on. The sale itself was seamless. Thanks so much.
If we are ever in the market here again, you will be our team.


After thirty wonderful years of enjoying our condominium in Deer Valley, we decided it was time to sell. Since we took great pride in our quality residence, we searched for a comparable realtor to handle our sale. We found them in the persons of Bill and Mary. I have never dealt with a more professional team. From start to finish, they accomplished everything that they promised. They know their business and they deliver.


I recently sold my townhouse in Upper Deer Valley after having been a limited time denizen for some thirty-seven years in the Park City area. In addition, at times in the past I have sold at least four other condos as well as many other types of real property in connection with my law practice. During these experiences, I worked with many real estate brokers. However, my recent experience with Bill and Mary was the most satisfying. Their responsiveness, their knowledge of the local market, their candor and overall professionalism make them superior examples of their craft. I would gladly recommend them to anyone who is thinking of selling their property in the Park City area.


Have you worked with Mary Leader before and want to write a testimonial on their behalf?