Sold prices · Knocklyon, Dublin 16

Mount Alton, Knocklyon: sold prices

Off Knocklyon Road

There are 14 recorded sales on Mount Alton since 2010. Homes have sold for a median of €610,000 since January 2023, across 5 open-market sales; the most recent was 35 Mount Alton, at €595,000 in February 2025.

€610k
Median sale, 2023 – now
€5,558
Median € per m²
+8.6%
Median sold vs asking, 2 sales
0
For sale or sale agreed
Price paid, every open-market sale

Mount Alton sales since 2010

€250k€500k€750k€1m€1.25m€1.5m20122015201820212024

Dashed line: two-year rolling median. Non-market sales and VAT-exclusive new-build prices excluded.

About the area

About Mount Alton

Mount Alton is a 1970s development of bungalows and larger two-storey homes in quiet cul-de-sacs off Knocklyon Road, a short walk from Knocklyon Shopping Centre. Marlay Park and St Enda's Park are nearby, as are Rathfarnham, Templeogue and Dundrum shopping centre. Local schools include St Colmcille's National and Community School, Loreto Beaufort, Sancta Maria College, Templeogue College and Terenure College. Public transport links serve the city centre and the M50.

Property Price Register · asking vs sold

Every recorded sale

AddressDateAskingSoldvs asking
35 Mount Alton2 bed · 108 m²20 Feb 2025€550,000€595,000+8.2%
7 Mount Alton5 bed · 272 m²18 Sep 2024€1,400,000€1,525,000+8.9%
40 Mount Alton 29 Sep 2023—€525,000
29 Mount Alton 13 Sep 2023—€610,000
45 Mount Alton 30 Jan 2023—€1,210,000
38 Mount Alton 20 Nov 2020—€450,000
10 Mount Alton 3 Apr 2020—€610,000
23 Mount Alton 20 Feb 2020—€550,000
43 Mount Alton 21 Oct 2019—€1,060,000
13 Mount Alton 15 Sep 2017—€750,000
38 Mount Alton 8 Jun 2016—€375,000
26 Mount Alton 24 Apr 2013—€307,000
33 Mount Alton 8 Aug 2012—€330,000
32 Mount Alton 28 Mar 2012—€335,000
Planning register

Planning applications on Mount Alton

11 applications on record, newest first.

  • Granted24 Aug 2020 · South Dublin ref. SD20B/0303
    43 Mount Alton
    Demolition of existing chimney and sunroom to rear of existing dwelling; construction of single-storey extension with rooflight to rear; two storey extension to side of dwelling with garage doors, dormer window to front and rooflights; single storey extension to front of dwelling; alterations to existing fenestration and material finish to front and side of existing dwelling, including new roof finish; attic conversion with dormer windows and rooflights to front and rear; widening of existing vehicular entrance to 3.5m and all associated site works.more…

    Demolition of existing chimney and sunroom to rear of existing dwelling; construction of single-storey extension with rooflight to rear; two storey extension to side of dwelling with garage doors, dormer window to front and rooflights; single storey extension to front of dwelling; alterations to existing fenestration and material finish to front and side of existing dwelling, including new roof finish; attic conversion with dormer windows and rooflights to front and rear; widening of existing vehicular entrance to 3.5m and all associated site works.

  • Granted28 Apr 2020 · South Dublin ref. SD20B/0137
    10 Mount Alton
    Amendment of the position of the entrance door in front porch of existing house; internal changes to the existing layout at ground floor & to convert the existing attic space into new bathroom & studio/bedroom with dormer window to side; a circular window in gable to the front & 'Velux' rooflights in the roof.more…

    Amendment of the position of the entrance door in front porch of existing house; internal changes to the existing layout at ground floor & to convert the existing attic space into new bathroom & studio/bedroom with dormer window to side; a circular window in gable to the front & 'Velux' rooflights in the roof.

  • Part granted, part refused18 Sep 2019 · South Dublin ref. SD19B/0368
    38 Mount Alton
    Ground floor entrance porch and skylight above with change of windows to the front; ground floor rear extension comprising of alterations and demolition works including the removal of the rear shed; first floor flat roofed extension providing new first floor habitable accommodation, including raising of roof ridge to rear and sides hosting photovoltaic panels to the property.more…

    Ground floor entrance porch and skylight above with change of windows to the front; ground floor rear extension comprising of alterations and demolition works including the removal of the rear shed; first floor flat roofed extension providing new first floor habitable accommodation, including raising of roof ridge to rear and sides hosting photovoltaic panels to the property.

    Appeal decision: Grant Permission

  • Refused21 Nov 2018 · South Dublin ref. SD18B/0488
    38 Mount Alton
    Ground floor entrance porch and skylight above with change of windows to the front; ground floor rear extension comprising of alterations and demolition works including the removal of rear shed; first floor flat roofed dormer extension providing first floor habitable accommodation, including raising of roof ridge to rear and sides hosting photovoltaic panels and a strip roof light to the front of the property.more…

    Ground floor entrance porch and skylight above with change of windows to the front; ground floor rear extension comprising of alterations and demolition works including the removal of rear shed; first floor flat roofed dormer extension providing first floor habitable accommodation, including raising of roof ridge to rear and sides hosting photovoltaic panels and a strip roof light to the front of the property.

    Appeal decision: Refuse Permission

  • Declared exempt23 Jan 2017 · South Dublin ref. ED17/0007
    26 Mount Alton
    Proposed whole - house Energy refurbishment, and modest single-storey extension (32sqm) to rear of existing 1970's single-storey two bed semi-detached house (92sqm), to form a high quality and thermally efficient three-bed family home. Works to include the replacement of existing sliding entrance porch door (2sqm) with new insulated front door and glazed screen with door to rear garden, all with high performance glazing and frames. New pitched roof extension to have white painted render external wall finish, 1no. main + 3 no.minor rooflights, and new rainwater goods generally. Concrete roof tiles are to match existing roof in height and material. Solar tubes/panels to rear South-facing roof. All colours to match existing where possible.more…

    Proposed whole - house Energy refurbishment, and modest single-storey extension (32sqm) to rear of existing 1970's single-storey two bed semi-detached house (92sqm), to form a high quality and thermally efficient three-bed family home. Works to include the replacement of existing sliding entrance porch door (2sqm) with new insulated front door and glazed screen with door to rear garden, all with high performance glazing and frames. New pitched roof extension to have white painted render external wall finish, 1no. main + 3 no.minor rooflights, and new rainwater goods generally. Concrete roof tiles are to match existing roof in height and material. Solar tubes/panels to rear South-facing roof. All colours to match existing where possible.

  • Extension of time granted27 Jan 2012 · South Dublin ref. SD07B/0019/EP
    32 Mount Alton
    Single storey extension to the side and rear including all associated site works. The extension will consist of an ensuite bedroom, WC, kitchen and utility room.more…

    Single storey extension to the side and rear including all associated site works. The extension will consist of an ensuite bedroom, WC, kitchen and utility room.

  • Granted1 Aug 2008 · South Dublin ref. SD08B/0565
    11, Mount Alton, Dublin 16

    Single storey extensions to front and rear.

  • Granted23 Mar 2007 · South Dublin ref. SD07B/0019
    32 Mount Alton
    Single storey extension to the side and rear including all associated site works. The extension will consist of an ensuite bedroom, WC, kitchen and utility room.more…

    Single storey extension to the side and rear including all associated site works. The extension will consist of an ensuite bedroom, WC, kitchen and utility room.

  • Granted13 Jan 2006 · South Dublin ref. SD06B/0015
    18, Mount Alton, Knocklyon, Dublin 16
    Extension to the house by 5.9sq.m. to the side and front and 25.4sq.m. to the rear at ground floor and 28.8sq.m. to the side over existing garage and kitchen at first floor; the change of use from garage to a study together with modifications to internal arrangements and elevations; the provision of automatic gates to existing driveway and the increase in height of the front boundary walls to 1200mm high.more…

    Extension to the house by 5.9sq.m. to the side and front and 25.4sq.m. to the rear at ground floor and 28.8sq.m. to the side over existing garage and kitchen at first floor; the change of use from garage to a study together with modifications to internal arrangements and elevations; the provision of automatic gates to existing driveway and the increase in height of the front boundary walls to 1200mm high.

  • Granted30 Sep 2004 · South Dublin ref. SD04B/0037
    25, Mount Alton, Knocklyon, Dublin 16
    Demolish existing conservatory and shed and construct a single storey extension to the rear incorporating new chimney stack and attic conversion to facilitate 2 No. bedrooms with separate bathroom facilities, two rooflights to the front with five to the rear and internal alterations to existing ground floor planmore…

    Demolish existing conservatory and shed and construct a single storey extension to the rear incorporating new chimney stack and attic conversion to facilitate 2 No. bedrooms with separate bathroom facilities, two rooflights to the front with five to the rear and internal alterations to existing ground floor plan

    Appeal decision: Grant Permission

  • Granted19 Apr 2000 · South Dublin ref. S00B/0093
    19 Mount Alton, Knocklyon, Dublin 16.

    Conversion of garage at side of house to t.v. room with pitched roof over.

House by house

Homes on Mount Alton

Every address with a sale or listing on record.

Sold since 2023For sale or sale agreedEarlier sale or listing