Planning Permission Ireland
RefusedInfrastructureDecided 18 October 2021

c.1.2087 ha. site located at the Former Oatlands Monastery (A94 W7W7), to the rear of Oatlands College, Mount Merrion Co. Dublin and 2 Cherrygarth (A94 D5K3), Mount Merrion, Blackrock, Co. Dublin

Drainage revisions to a permitted residential development at the former Oatlands Monastery.

D21A/0753 · Dun Laoghaire Rathdown County Council · Lodged 24 August 2021

Reference
D21A/0753
Authority
Dun Laoghaire Rathdown County Council
Register status
Decided
Type
Permission
Received
24 August 2021

Summary

AI-generated

This application seeks alterations to a previously permitted residential development. The changes focus on revising the wastewater and surface water drainage routes. Wastewater will now discharge to the system in Woodlands Avenue, and surface water will connect to the old Dublin Road system.

Infrastructuredrainageinfrastructurealterations

Generated from the description above by an AI model and may contain mistakes. The council’s description is the authoritative record.

Official record

Development description

Permission for development. The development will consist of alterations to the permitted residential development under reg. Ref. D16a/0465; abp ref. Pl 06d. 247267 comprising revisions to the wastewater and surface water drainage proposals. The revised drainage route is to the south of the site with the wastewater proposed to discharge to the existing system in woodlands avenue with the surface water to discharge to the existing system in the old dublin road. The development will include all a...

Land-use zoning

What this land is zoned for

Objective ARS
A To provide residential development and improve residential amenity while protecting the existing residential amenities

Objective set by the COUNTY DEVELOPMENT PLAN 2022-2028 (2022–2028). The planning authority decides each application on its own merits — this is the zoning context, not a compliance assessment.

Read the zoning objectives in the development plan

Built & sold

What happened next

Beyond the decision: whether this development was built, and what property here has sold for.

Recent sales nearby

within 500 m
Residential Property Price Register sales within 500 metres of this site
AddressDatePriceDistance
4 Cherry Garth, Mount Merrion, BlackrockAug 2025€1,650,00075 m
2 Cherrygarth, Mount Merrionprice excludes VATOct 2025€881,05799 m
15 Cherry Garth, Mount Merrion, BlackrockApr 2025€1,110,000113 m
11 Cherry Garth, Mount Merrion, DublinJan 2025€1,051,000120 m
56 Thornhill Oaks, Mount Merrionprice excludes VATMar 2025€775,330121 m
Apt.28 - Thornhill Oaks, Cherry Garth - Mount Merrion, BlackrockJul 2025€999,999128 m
24 Beaufield Manor, Stillorgan, DublinJul 2025€495,000146 m
32 Beaufield Manor, Stillorgan, DublinAug 2025€393,000148 m

Nearby properties, not this site — a guide to local values.

Sources: Building Control Management System (commencement notices) and the Residential Property Price Register, licensed under CC BY 4.0. Records are matched to this application by location and may not be exhaustive; always confirm against the official source before relying on them.

Key dates

Timeline

  1. Application received24 August 2021
  2. Decision issued18 October 2021
  3. Appeal submitted12 November 2021
  4. Appeal decided11 April 2023

In the area

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