Apt 21 the Spinaker, Alverno
Dublin 3 / Clontarf / D03H1D9
Part of Shanganagh Castle Estate
Last Sale Price
Sale History
Overall: +18.8% from €362,000 to €430,000 ( → )
Price History
Price Intelligence
This property has been sold 2 times since 12 May 2022. The price has increased by +18.8% from €362,000 to €430,000. That works out to an annualised return of +5.0% over 3.5 years.
At €430,000, Apt 21 the Spinaker last sold 10.3% above the Castle Avenue street median of €390,000 (based on 103 recorded sales). Compared to Clontarf overall (median €547,000, 3091 sales), Apt 21 the Spinaker sits 21.4% below the area average.
Repeat-sale properties on Castle Avenue show a median investment growth rate of +7.2% per year over 14.2 years (2011 to 2025, 9 repeat-sale properties).
What did Apt 21 the Spinaker last sell for?
Apt 21 the Spinaker last sold for €430,000 on 10 Nov 2025.
How many times has Apt 21 the Spinaker been sold?
Apt 21 the Spinaker has been sold 2 times between 12 May 2022 and 10 Nov 2025. The price increased by 18.8% over that period.
How does Apt 21 the Spinaker compare to others near Castle Avenue?
At €430,000, Apt 21 the Spinaker last sold 10.3% above the Castle Avenue street median of €390,000 (based on 103 recorded sales).
How does Apt 21 the Spinaker compare to the rest of Clontarf?
Compared to Clontarf (median €547,000, 3,091 sales), Apt 21 the Spinaker sits 21.4% below the area average.
What is the investment growth rate on Castle Avenue?
Using properties on Castle Avenue with at least two recorded sales, the median annual growth rate is +7.2% per year over 14.2 years (2011 to 2025, 9 repeat-sale properties). How this is calculated.
Growth metrics use repeat-sale properties only. Methodology.
Clontarf Rental Market
Properties in Clontarf like this one typically rent for the amounts below, based on tenancies registered with the Residential Tenancies Board.
Based on 70 registered tenancies. Source: RTB Rent Register. Yield estimated from median area rent vs last sale price.
About Clontarf
The seafront promenade stretches from the Bull Wall to Dollymount, with North Bull Island — a UNESCO Biosphere Reserve formed after the wall's construction in the 1820s — providing a remarkable wildlife sanctuary within the city limits. Behind the coast road, Victorian and Edwardian houses line the avenues leading to St Anne's Park, the former Guinness estate whose 240 acres of Rose Garden and arboretum remain freely open. Clontarf has been sought-after since the Victorians made it a bathing resort.
Housing in Dublin 3
Based on 11,869 BER assessments — see district details