Karen McMahon

Karen McMahon

  •   5   (33 reviews)

About Karen

𝗕𝗮𝘀𝗲𝗱 𝗼𝗻 𝗪𝗮𝗶𝗵𝗲𝗸𝗲 𝗜𝘀𝗹𝗮𝗻𝗱 𝗛𝗮𝗿𝗰𝗼𝘂𝗿𝘁𝘀 𝗪𝗮𝗶𝗵𝗲𝗸𝗲 - 𝟱/𝟮𝟴 𝗕𝗲𝗹𝗴𝗶𝘂𝗺 𝗦𝘁𝗿𝗲𝗲𝘁, 𝗢𝘀𝘁𝗲𝗻𝗱. harcourtswaiheke.co.nz My passion for real estate began at age four with an obsession for drawing houses. Study in architecture and interior design followed. My other love, that of island life, drew me to Waiheke in 2007 for a sea change, a new direction. Joining Harcourts Cooper & Co in 2015 was the beginning of a successful real estate career selling bare land to multi-million dollar lifestyle properties and everything in between. My approach to real estate is about connecting with my clients’ needs and goals to facilitate the best outcome. It is a relationship built on trust where attending to the details, transparency, kindness and respect all go hand in hand in every transaction. I measure my success by the number of happy people I have helped navigate the process of buying and selling. In my spare time I love swimming in the sea, keeping fit, spending time in nature and cooking healthy food. My interests include Ayurveda, permaculture and, of course, houses. Get in touch for all things real estate on Waiheke Island. I look forward to meeting you.

Karen's reviews

  5  
Karen has 33 reviewsacross 7 different locations, showing 6.
Review Karen
29 days ago
Great Thanks

We recently worked with Karen as buyers on a lifestyle block purchase on Waiheke Island and couldn't recommend her more highly. From the outset, Karen was exceptionally well-informed about the property, her knowledge went well beyond the basics, and she was genuinely helpful in working through the detail with us at every stage of the due diligence process. No question was too much, and she consistently followed up promptly and thoroughly on every item we raised. What stood out most was Karen's willingness to go the extra mile to help get the deal across the line. She acted as a true conduit between us and the vendor, handling some complex due diligence queries with professionalism and care, and always keeping things moving in the right direction. If you're buying or selling on Waiheke, Karen is the person you want in your corner.

about 2 months ago
Karen and Greg – The Best of the Best

Karen and Greg were professional, well organised, and wonderfully easy to work with. They were extremely encouraging and supportive. They helped us through the necessary processes, paperwork and hurdles we faced. Many times they provided assistance that was far beyond that which would usually be expected from real estate agents. Karen and Greg embody the wonderful community spirit of Waiheke. We were blessed to have them as our agents, and we cannot recommend them highly enough.

4 months ago
What a wonderful experience!

Working with Karen and Greg was such a pleasure, they guided us through the buying process, all our questions were answered, they gave us sound advice and all the communication was clear and prompt. We genuinely felt like we were in good hands and highly recommend them.

4 months ago
Their communication was great-always proactive, honest, and focused on results..

I can’t speak highly enough of our experience with Karen and Greg. From the very beginning, they brought professionalism, clarity, and genuine care to the entire selling process. Their communication was exceptional—always proactive, always honest, and always focused on achieving the best outcome for us. Their market knowledge, strategy, and attention to detail made a huge difference, and we felt supported every step of the way. Selling a home can be stressful, but Karen and Greg made it smooth, efficient, and surprisingly enjoyable. We are incredibly grateful for their hard work and would recommend them without hesitation.

4 months ago
Extremely helpful and professional agent

We were so lucky to have Karen helping us through this life changing process. She has all the qualities one would wish for when selling and buying a house.

Show all 33 reviews

Karen's properties

Karen has 4 properties for sale and sold 9 properties in the last 12 months, showing 4, sorted by most recent activity

SoldJul 2, 2026
Price not available
29 Rothschild Terrace
Waiheke Island Auckland
2
2
2
Rural
SoldApr 23, 2026
Price not available
71 Trig Hill Rd
Onetangi Auckland
2
1
House
SoldApr 16, 2026
Price not available
10/118 Ocean View Road
Oneroa Auckland
1
1
Apartment
SoldMar 30, 2026
Price not available
58 Onetangi Road
Waiheke Island Auckland
3
3
2
Rural
Show all 13 properties
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