Karen McMahon

Karen McMahon

  •   5   (30 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 30 reviewsacross 7 different locations, showing 6.
Review Karen
17 days 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.

24 days 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.

about 1 month 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.

about 2 months ago
A very supportive experience

Karen worked hard for us. She was very professional whilst always keeping us informed and up to date with viewings and feedback. She was enthusiastic but realistic about our property's potential. She was respectfully helpful with decision making, offering advice when it was asked for without being patronising. She is a very empathetic person and has excelkent communication skills. Overall it has been a very positive and successful experience and we feel fortunate that she was our agent. We also want to acknowledge what a great team she and GREG made working together to help sell our house and we were especially delighted with Greg’s photography.

2 months ago
Friendly, Professional & Knowledgeable

Karen and Greg were both friendly, professional and easy to communicate with and also very knowledgeable regarding the real estate market on Waiheke. We were able to have a few laughs with them during the selling process which made the experience a lot more relaxed and easy going. They were both realistic regarding the house selling process and gave us good insight into what to expect during the sale of our house. They took a lot of the stress of selling a house off our shoulders and we knew we were in good hands with them both. We would definitely recommend these two agents to anyone wanting to sell or buy real estate. They work very well as a team. Cheers Karen and Greg! :)

3 months ago
Smooth Sales Process

we contacted Karen after 6 years as we originally purchased the property through Karen. The process was easy, we set a realistic goal for our sale price and they got to work on marketing straight away, we had the property listed for 4 weeks just prior to Christmas. Karen & Greg done an amazing job, and secured 2 offers for us. We negotiate with the purchasers and came to a price we were all happy with. It has been smooth sailing with Karen & Greg, and have no reservations in recommending them as a sale team.

Show all 30 reviews

Karen's properties

Karen has 5 properties for sale and sold 12 properties in the last 12 months, showing 4, sorted by most recent activity

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
SoldMar 27, 2026
Price not available
47 Natzka Rd
Ostend Auckland
2
2
1
House
Show all 17 properties
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