Katherina Kostrzak-Adams

Katherina Kostrzak-Adams

Principal / Licensed Real Estate Agent at Ray White Kurrajong
  •   4.9   (275 reviews)

Katherina's sales performance at a glance

See how Katherina has performed in the last 12 months on RateMyAgent*

23
Reviews
40
Median days on market
7
Properties for sale
33
Sold properties
$1.5m
Average sale price
$50.3m
Total sales value

*Includes all properties sold (last 12 months) as lead and supporting agent and published on ratemyagent.com.au. It may not be complete and can exclude off-market, private sales and undisclosed pricing and sold dates. Contact agent for full sales history.

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    Consistently meets client expectations for property purchase price.

Katherina's customer service award

See the RateMyAgent award Katherina has won

  • 2x Suburb WinnerKurrajong Heights - 2024, 2018

About Katherina

According to Katherina, her success is a direct result of her strong business principles. “I pride myself in conducting my business with honesty, integrity and professionalism”. “The process of selling and buying a house is a big deal and its one that I want my clients to enjoy - which is why I make it my priority to ensure a pressure and stress-free environment for my clients”. Katherina is the market leader in Kurrajong and specialises in the Hawkesbury in both acreage and residential. Katherina combines business experience in client services with client communication. Having worked for the Ray White family for 20 years, Katherina has gained recognition and has achieved the prestigious title of an Elite Performer for consecutive years 2014 - 2020 and 2021 - 2023 and Premier 2024, 2025 and 2026 whilst working in the Ray White Kurrajong office. In 2018 Katherina was also awarded Number 6 Selling Principal for NSW Metro Offices. Katherina works as a professional whose commitment ensures she receives a high level of repeat business. She is extremely attentive to her clients’ needs and always keeps them informed throughout the sale process. Katherina and her husband Gavin Adams purchased the Ray White Kurrajong Office in 2016 and together have a great team. They work closely with buyers and utilise our extensive database to match buyers and properties resulting in shorter days on market. Katherina strives in enthusiasm from the commencement of the marketing campaign throughout to the negotiation and the sale process. She carefully supports the needs and expectation of her clients to ensure a smooth, seamless and successful process. Katherina is supported by her close knit team of experienced professionals, Katherina was honoured to receive the Principals' Office Recognition as Premier Business Leader 2024/2025. Ray White Kurrajong has been awarded Agency of the Year 2026 for Bowen Mountain and Kurrajong Heights. A true reflection of our local trust and dedication.

Katherina's reviews

  4.9  
Katherina has 275 reviewsacross 21 different locations, showing 6.
Review Katherina
Seller review
Katherina is very professional,very approachable,listens well and works very hard for best outcomes
18 days ago
Katherina is very professional,very approachable,listens well and works very hard for best outcomes

Not only was Katherina excellent in her manner and performance but she was also very caring and had our best interests at heart at all times. She was very approachable and willing to listen to our needs and worked very hard, and beyond expectations, to help meet those needs. Katherina also showed genuine enthusiasm and excitement for us, at the successful sale of our home.

Seller review
Honest and hard working
about 1 month ago
Honest and hard working

Katherina was honest and communicated fully with us throughout the sale. Katherina and the whole team went above and beyond to sell our home.

Seller review
Highly recommend
2 months ago
Highly recommend

Katherina has been a fantastic representative for our home, and has achieved an excellent result in a short space of time. Nothing was too much trouble, and the communication from both herself and her team was second to none. Her work ethic, integrity and down to earth character has helped make the whole process seamless. We highly recommend Katherina and her team!

Seller review
Totally professional in every aspect. Excellent customer service and l recommend her to everyone.
3 months ago
Totally professional in every aspect. Excellent customer service and l recommend her to everyone.

Katherina from Ray White Real Estate at Kurrajong New South Wales is a woman who has excellent customer service skills and her communication in all aspects is outstanding. During the sale of my sister in-laws property she kept us thoroughly informed in respect to everything. Her knowledge in respect to the current house and property market is without question exceptional. On my sister in-laws behalf Katherina successfully negotiated and obtained the sale price of the property that was required. She is totally professional and a person of the highest integrity. I would have no hesitation in recommending Katherina to any person whatsoever who was considering in selling or purchasing a home or property.

Seller review
A consummate professional
3 months ago
A consummate professional

We had a very positive experience selling our property with Katherina. From the outset, Katherina and her team displayed their professional approach, and we benefitted from her deep market knowledge. Another highlight was Katherina’s communication, as she kept us updated throughout all stages of the process. We have no hesitation recommending Katherina and her team.

Show all 275 reviews
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Katherina's properties

Katherina has 7 properties for sale and sold 33 properties in the last 12 months, showing 4, sorted by most recent activity

For Sale
Price not available
1905 Putty Road
Colo NSW 2756
3
1
4
House
For Sale
Just Listed
1905 Putty Road
Colo NSW 2756
3
1
4
House
For Sale
Just Listed
1 Douglas Rd
Kurrajong Heights NSW 2758
3
2
3
House
For Sale
Just Listed
117 Old Bells Line of Road
Kurrajong NSW 2758
3
2
4
House
Show all 40 properties

Katherina's sold properties

Katherina has sold 33 properties in the past 12 months, showing 4.

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bedroom
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bathrooms in
Property imageAddressBedroomsBathroomsCarparksProperty TypeClosing PriceDate Sold
18/21 Vincents Road, Kurrajong, NSW, 2758
18/21 Vincents Road
Kurrajong NSW 2758
4
4
2
House$1,305,000Sep 7, 2026
59 Old Bells Line of Rd, Kurrajong, NSW, 2758
59 Old Bells Line of Rd
Kurrajong NSW 2758
5
2
3
House$1,170,000Sep 2, 2026
33 Skyline Road, Mount Tomah, NSW, 2758
33 Skyline Road
Mount Tomah NSW 2758
4
2
2
propertyTypes.acreage-semi-rural$1,370,000Aug 20, 2026
5 Sherwood Street, Kurrajong, NSW, 2758
5 Sherwood Street
Kurrajong NSW 2758
4
2
2
HouseUndisclosed PriceAug 13, 2026

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