The Sentinel (Block C), at the former Allegro Site, (now known as "Rockbrook"), Blackthorn Drive, Sandyford Business Estate, Sandyford, Dublin 18
Revised internal configuration of the unfinished Sentinel building to provide 294 office suites.
D13A/0457 · Dun Laoghaire Rathdown County Council · Lodged 4 June 2014
- Reference
- D13A/0457
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission
- Received
- 4 June 2014
Summary
AI-generatedThis application seeks permission for a revised internal configuration of the unfinished Sentinel (Block C) building. The proposed layout will accommodate 294 office suites and 28 meeting rooms.
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 sought for development at this 0.195 ha site approximately comprising a substantically constructed, but unfinished building known as "the sentinel" (block c), located on part of the former allegro site (now known as "rockbrook"), blackthorn drive, sandyford business estate, sandyford, dublin
- (reg. Refs. D05a/1159 and d09a/0117). The development will consist of: revised internal configuration of permitted office floorspace to comprise 294no. Office suites and 28 no. Meeting room
Land-use zoning
What this land is zoned for
“MIC To consolidate and complete the development of the mixed use inner core to enhance and reinforce sustainable development.”
National zoning type: Other mix of uses
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 planBuilt & 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| Address | Date | Price | Distance |
|---|---|---|---|
| 16 Grande Central, Core 7, Rockbrook Dublin 18 | Jul 2025 | €1,065,000 | 38 m |
| 189 Grand Central, Rockbrook, Carmanhall Rd Dublin 18 | Mar 2026 | €535,000 | 69 m |
| 83 Grand Central, Dublin 18, Dublin | Oct 2025 | €510,000 | 72 m |
| 98 Grand Central, Sandyford, Dublin 18 | Jan 2025 | €521,000 | 86 m |
| Apt.107, Grande Central, Sandyford | Jul 2025 | €585,000 | 99 m |
| 506 The Edges 2, Beacon South Quarter, Sandyford | Apr 2025 | €385,000 | 106 m |
| 401 The Edges 2, Beacon South Quarter, Sandyford Ind Est Dublin 16 | Jan 2025 | €391,000 | 106 m |
| 410 The Edges 2, Beacon South Quarter, Sandyford | Oct 2025 | €428,000 | 106 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
- Application received4 June 2014
- Decision issued1 July 2014
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- GrantedAt this site
Permission is sought for development at a 0.195 ha site comprising a substantially constructed, but…
"The Sentinel" (Block C),, at the former Allegro Site, (now known as "Rockbrook"), Blackthorn Drive, Sandyford Business Estate, Sandyford, Dublin 18
D16A/0991Dún Laoghaire–RathdownLodged 14 Sept 2017Commercial
- GrantedAt this site
Modifications to Block C (as per Reg. Reg. D05A/1159). Block C is currently under construction but not yet…
Block C, At The Former Allegro Site, Sandyford Industrial Estate, Dublin 18
D09A/0117Dún Laoghaire–RathdownLodged 17 Feb 2009Alterations
- InvalidAt this site
Permission for modifications to Block C (per Reg Ref D05A/1159) at the former Allegro Site. Block C is…
Former Allegro Site, Blackthorn Drive, Sandyford, Dublin 18
D08A/1421Dún Laoghaire–RathdownLodged 23 Dec 2008Retention
- Invalid50 m away
Permission for modifications to permitted development (as per Reg Ref D05A/1159, D06A/1704 and modified under…
Unit A7 Block A, Rockbrook Development (former Allegro Site), Blackthorn Drive, Sandyford, Dublin 18
D16A/0051Dún Laoghaire–RathdownLodged 29 Jan 2016Retention
- Granted50 m away
Permission for Retention of modifications to permitted development (as per Reg. Ref. D05A/1159, D06A/1704 and…
Unit A7 Block A of the Rockbrook Development (former Allegro Site), Blackthorn Drive, Sandyford, Dublin 18
D16A/0168Dún Laoghaire–RathdownLodged 4 Aug 2016Retention
- Granted50 m away
Permission and retention permission for a development consisting of modifications to permitted development…
Site of c. 0.019ha, located at Unit A7, Block A of the 'Rockbrook' development (the former Allegro site), Blackthorn Drive, Sandyford, Dublin 18
D13A/0123Dún Laoghaire–RathdownLodged 15 Mar 2013Change of use
- Granted70 m away
Mixed use development comprising of the following: The demolition of all existing structures on the site of…
Former Allegro Site, Carmanhall Road/Blackthorn Avenue/Blackthorn Drive, Sandyford Industrial Estate, Dublin 18.
D05A/1159Dún Laoghaire–RathdownLodged 7 Sept 2005Apartments
- Granted70 m away
The development will consist of modifications to the permitted under Reg.Ref.D05A/1159 (lower ground and — 1…
Former Allegro Site, Carmanhall Road/Blackthorn Avenue/Blackthorn Drive, Sandyford Industrial Estate, Dublin 18.
D07A/0975Dún Laoghaire–RathdownLodged 18 Dec 2007Commercial
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- GrantedCommercial
A 10 year permission is sought for development on a site of 2.13ha bounded to the north by Sandyford Office…
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D22A/0194Dún Laoghaire–RathdownLodged 3 Feb 2023
- GrantedHousing estate
Permission for a strategic housing development with an application site area of c. 2.02 ha (excluding…
Rockbrook, Carmanhall Road, Sandyford Business District, Sandyford, Dublin 18
ABP30440519Dún Laoghaire–RathdownLodged 8 May 2019
- GrantedApartments
Permission for a Large-scale Residential development on lands forming part of development generally known as…
Lands forming part of development generally known as Rockbrook located at the junction of Blackthorn Drive and Carmanhall Road, Rockbrook Estate, Sandyford Business District, Dublin 18
LRD23A/0557Dún Laoghaire–RathdownLodged 25 Aug 2023
- GrantedCommercial
Permission is sought for development on this site of c. 0.33 hectares which incorporates permitted Block E…
Block E (per Reg Ref D05A/1159), Former Allegro Site,Blackthorn Drive, Sandyford Industrial Estate, Dublin 18.
D07A/1106Dún Laoghaire–RathdownLodged 19 Dec 2007
- InvalidRetention
Retention of development. The development consists of modifications to exterior panel finishes and minor…
Former Odenberg site, junction of Blackthorn Road and Drive,, Sandyford Industrial Estate, Dublin
D02A/0752Dún Laoghaire–RathdownLodged 24 Jul 2002
- RefusedAlterations
The development will consist of amendments to a previously permitted development (Reg.Ref. D07A/0131) at this…
Miicrosoft and Apex Site, Sandyford Business Estate, Sandyford, Dublin 18
D07A/1603Dún Laoghaire–RathdownLodged 21 Nov 2007
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