20 St. Helen's Avenue
South Dublin / Finnstown / K78A0P4
Last Sale Price
Sale History
Overall: +76.7% from €343,612 to €607,000 ( → )
Price History
Price Intelligence
This property has been sold 2 times since 1 Oct 2020. The price has increased by +76.7% from €343,612 to €607,000. That works out to an annualised return of +11.6% over 5.2 years.
At €607,000, 20 St. Helen's Avenue last sold 105.7% above the Saint Helen S Avenue street median of €295,154 (based on 5 recorded sales). Compared to Finnstown overall (median €317,181, 1506 sales), 20 St. Helen's Avenue sits 91.4% above the area average.
What did 20 St. Helen's Avenue last sell for?
20 St. Helen's Avenue last sold for €607,000 on 19 Dec 2025.
How many times has 20 St. Helen's Avenue been sold?
20 St. Helen's Avenue has been sold 2 times between 1 Oct 2020 and 19 Dec 2025. The price increased by 76.7% over that period.
How does 20 St. Helen's Avenue compare to others near Saint Helen S Avenue?
At €607,000, 20 St. Helen's Avenue last sold 105.7% above the Saint Helen S Avenue street median of €295,154 (based on 5 recorded sales).
How does 20 St. Helen's Avenue compare to the rest of Finnstown?
Compared to Finnstown (median €317,181, 1,506 sales), 20 St. Helen's Avenue sits 91.4% above the area average.
Growth metrics use repeat-sale properties only. Methodology.
About Finnstown
A large residential neighbourhood in the Lucan area, Finnstown grew from the grounds of the former Finnstown House — now a hotel and golf course — into one of west Dublin's most established suburbs. The housing estates that developed from the 1970s onwards are mature and well-maintained, with schools, parks, and a strong sense of community. The proximity to the N4 and Liffey Valley keeps the area well connected to both the city and the western commuter belt.
Housing in South Dublin
Based on 15,045 BER assessments — see district details