18 Alan Avenue, Seaforth, NSW 2092 | Property Value & History | OnTheHouse
 
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18 Alan Avenue
Seaforth NSW 2092

Bedrooms: 5
Bathrooms: 4
Car spaces: 3
Floor area: 398m2
Land area: 1222m2
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Last updated 5 Jan 2026
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Property Details for 18 Alan Ave, Seaforth

18 Alan Ave, Seaforth is a 5 bedroom, 4 bathroom House with 3 parking spaces and was built in 2017. The property has a land size of 1222m2 and floor size of 398m2. While the property is not currently for sale or for rent, it was last sold in December 2012.

Building Type
House
Year Built
2017
Floor Size
398m2
Land Size
1222m2
Local Government
Northern Beaches
Lot/Plan
102/DP4889

Last Listing description (December 2012)

Set on 1220sqms of premier land, this north to rear facing home presents a rare opportunity to immediately move in with DA approved plans designed to capitalise on its size and lifestyle position.

The DA approved plans that are available convert this extraordinary space into a tri-level family home complete with five bedrooms. Currently, a large sunny outdoor entertaining terrace leads through to the combined casual living and dining areas featuring a fireplace setting with gas outlet and polished hardwood floors. The sun washed interiors require minimal cosmetic updates in order to provide a comfortable and character-filled four-bedroom home.


The covered rear outdoor entertaining area leads down onto an expansive lawn filled with established trees and northern sunlight. A functional kitchen is positioned to enjoy a garden outlook and is equipped with an eat-in meals area. There are four good-sized bedrooms, three with built-ins and a main bedroom that includes direct access to the front terrace.

An original retro style bathroom consists of a separate bath and shower plus w/c. Other features include a separately enclosed laundry/multi-purpose room and w/c, garaging and off-street parking to accommodate four cars and original period details throughout.

This low-set home represents an impressive lifestyle address for those seeking to secure possible future investment potential or build their dream family home today. It is superbly positioned in a tightly held family-friendly location with a moments walk to the Middle Harbour, local shops, coastal walks, cafs, parks and transport.

Inspect Saturday & Wednesday 10 - 10.30am
Auction Thursday 20th December at 6.30pm
LJ Hooker House 102 Glover Street, Mosman
Details David Rothschild 0414 60 66 66

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Property History for 18 Alan Ave, Seaforth, NSW 2092

A timeline of how this property has performed in the market
Last Sold
$1,675,000
17 Dec 2012
Listed for Rent
$695/w
08 Nov 2008
  • 17 Dec 2012
    Sold for $1,675,000
  • 15 Nov 2012
    Listed for Sale Not Disclosed
  • 11 Oct 2008
    Listed for Rent - Price not available
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About Seaforth 2092

The size of Seaforth is approximately 3.0 square kilometres. It has 15 parks covering nearly 17.5% of total area. The population of Seaforth in 2016 was 7139 people. By 2021 the population was 7384 showing a population growth of 3.4% in the area during that time. The predominant age group in Seaforth is 10-19 years. Households in Seaforth are primarily couples with children and are likely to be repaying over $4000 per month on mortgage repayments. In general, people in Seaforth work in a professional occupation.In 2021, 82.20% of the homes in Seaforth were owner-occupied compared with 81.40% in 2016.

Seaforth has 2,810 properties. Over the last 5 years, Houses in Seaforth have seen a 36.65% increase in median value, while Units have seen a 29.33% increase. As at 31 December 2025:

  • The median value for Houses in Seaforth is $3,748,747 while the median value for Units is $2,020,904.
  • Houses have a median rent of $1,700 while Units have a median rent of $1,100.
There are currently 11 properties listed for sale, and 6 properties listed for rent in Seaforth on OnTheHouse. According to Cotality's data, 113 properties were sold in the past 12 months in Seaforth.

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© Copyright 2026. 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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