GrantedCommercialDecided 11 October 2017

"The Sentinel" (Block C), at the former Allegro Site, (now known as "Rockbrook"), Blackthorn Drive, Sandyford Business Estate, Sandyford, Dublin 18

Completion of the unfinished Sentinel building to provide 294 office suites and two additional floors.

D16A/0991 · Dun Laoghaire Rathdown County Council · Lodged 14 September 2017

Reference: D16A/0991
Authority: Dun Laoghaire Rathdown County Council
Register status: Decided
Type: Permission
Received: 14 September 2017

Summary

AI-generated

Permission is sought to complete the internal configuration of the unfinished Sentinel (Block C) building to provide 294 office suites and 28 meeting rooms. The development also proposes adding two additional floors to the existing six-storey section.

Commercialofficecompletionsandyford

Storeys: 8

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 is sought for development at a 0.195 ha site comprising a substantially constructed, but unfinished building known as the sentinel,block c,locatedin part of the former allegro site,now known as rockbrook. (reg. Ref. D05a/1159 and d09a/0117 refer). The development will consist of: completion of internal configuration of permitted office floor space to comprise 294 office suites and 28 meeting rooms; the provision of two additional floors (1490 sqm) to the existing 6 storey part of t...

Land-use zoning

What this land is zoned for

Objective MICUC

“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 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
Address	Date	Price	Distance
16 Grande Central, Core 7, Rockbrook Dublin 18	Jul 2025	€1,065,000	35 m
83 Grand Central, Dublin 18, Dublin	Oct 2025	€510,000	70 m
189 Grand Central, Rockbrook, Carmanhall Rd Dublin 18	Mar 2026	€535,000	71 m
98 Grand Central, Sandyford, Dublin 18	Jan 2025	€521,000	84 m
Apt.107, Grande Central, Sandyford	Jul 2025	€585,000	98 m
506 The Edges 2, Beacon South Quarter, Sandyford	Apr 2025	€385,000	110 m
401 The Edges 2, Beacon South Quarter, Sandyford Ind Est Dublin 16	Jan 2025	€391,000	110 m
410 The Edges 2, Beacon South Quarter, Sandyford	Oct 2025	€428,000	110 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 received14 September 2017
Decision issued11 October 2017

In the area

Applications near this site

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Related developments

Similar applications

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