21-23 Ada Avenue, Wahroonga, NSW 2076 | Property Value & History | OnTheHouse
 
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21-23 Ada Avenue
Wahroonga NSW 2076

Bedrooms: 5
Bathrooms: 5
Car spaces: 2
Floor area: 664m2
Land area: 7094m2
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Property Details for 21-23 Ada Ave, Wahroonga

21-23 Ada Ave, Wahroonga is a 5 bedroom, 5 bathroom Unit with 2 parking spaces and was built in 1939. The property has a land size of 7094m2 and floor size of 664m2. While the property is not currently for sale or for rent, it was last sold in April 2011.

Building Type
Unit
Year Built
1939
Floor Size
664m2
Land Size
7094m2
Local Government
Ku-Ring-Gai
Lot/Plan
40/DP650969

Last Listing description (October 2025)

A Grand Estate of Unparalleled Scale, Luxury and Potential. Set across approx. 7,100sqm (1.75 acres), 2123 Ada Avenue stands as one of the largest and most prestigious landholdings on Sydney's North Shore - a once-in-a-generation opportunity to secure a landmark property that blends grandeur, lifestyle, and future potential. Meticulously renovated throughout by its current owners, this aspirational family estate is a true sanctuary of elegance and scale - complete with lift to all 3 floors, championship north/south tennis court, resort-style pool with pool house, one-bedroom separate residence, horse stables, and manicured park-like gardens.

Property Features:
- 6 oversized bedrooms + dedicated home office

- 7 luxurious bathrooms with premium finishes (3 with ensuites)
- 4-car lock-up garage + grand port cochere (20+ car off-street parking)
- Multiple formal and informal living spaces throughout
- Designer kitchen (subzero fridges) and butlers pantry to huge outdoor undercover entertaining
- North/south championship sized tennis court
- Sparkling in-ground pool, with separate pool house
- One-bedroom cabana ideal for guests or extended family
- Original horse stables, adding charm and character
- Lush, established gardens with sweeping lawns and mature trees
- Full internal renovation tastefully updated for modern living while preserving timeless architectural charm
- Dual access, excellent privacy and security - backs down the The Glade Oval
- Further development potential for subdivision (STCA)
- Wahroonga's largest landholding within walking distance to rail
- Moments to elite schools including Knox Grammar, Abbotsleigh, Barker College
- Close to Wahroonga village shops, cafes, parks and transport
- Positioned on a peaceful, tree-lined street in one of Sydney's most tightly held enclaves

Rarely does a property of this scale, luxury and location come to market. With its expansive grounds, exquisite renovation, and multi-use potential - this is an estate that elevates family living to a whole new level. Whether you're seeking a forever home, an intergenerational retreat, or the foundation for future development (STCA), 2123 Ada Avenue is a standout in every sense.

Enquire today to arrange a private inspection of this landmark Wahroonga estate.

Disclaimer: the information provided is for general informational purposes only and is not intended as legal, financial, or real estate advice. While every effort is made to ensure the accuracy of the information, we make no guarantees regarding its completeness or accuracy. Prospective parties are encouraged to conduct their own independent investigations. We are not responsible for any liabilities that arise from use of information provided.

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Property History for 21-23 Ada Ave, Wahroonga, NSW 2076

A timeline of how this property has performed in the market
Last Sold
$3,975,000
21 Apr 2011
  • 01 Oct 2025
    Listed for Sale For Sale - Contact Agent
  • 21 Apr 2011
    Sold for $3,975,000
  • 02 Dec 2010
    Listed for Sale $4,150,000
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About Wahroonga 2076

The size of Wahroonga is approximately 9.7 square kilometres. It has 36 parks covering nearly 13.3% of total area. The population of Wahroonga in 2016 was 17371 people. By 2021 the population was 17853 showing a population growth of 2.8% in the area during that time. The predominant age group in Wahroonga is 10-19 years. Households in Wahroonga are primarily couples with children and are likely to be repaying over $4000 per month on mortgage repayments. In general, people in Wahroonga work in a professional occupation.In 2021, 78.00% of the homes in Wahroonga were owner-occupied compared with 80.60% in 2016.

Wahroonga has 7,359 properties. Over the last 5 years, Houses in Wahroonga have seen a 45.05% increase in median value, while Units have seen a 26.89% increase. As at 30 November 2025:

  • The median value for Houses in Wahroonga is $2,901,436 while the median value for Units is $1,103,935.
  • Houses have a median rent of $1,185 while Units have a median rent of $720.
There are currently 22 properties listed for sale, and 7 properties listed for rent in Wahroonga on OnTheHouse. According to Cotality's data, 372 properties were sold in the past 12 months in Wahroonga.

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Cotality Copyright and Legal Disclaimers about Property Data

© Copyright 2025. RP Data Pty Ltd trading as Cotality (Cotality). All rights reserved. No reproduction, distribution, or transmission of the copyrighted materials is permitted. The information is deemed reliable but not guaranteed.

Disclaimer
The Cotality Data provided in this publication is of a general nature and should not be construed as specific advice or relied upon in lieu of appropriate professional advice.

While Cotality uses commercially reasonable efforts to ensure the Cotality Data is current, Cotality does not warrant the accuracy, currency or completeness of the Cotality Data and to the full extent permitted by law excludes all loss or damage howsoever arising (including through negligence) in connection with the Cotality Data.

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