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Planning application

LA04/2026/0164/F

15 Coolnasilla Avenue, Belfast, BT11 8LD

Granted Belfast Full

Proposal

Single storey front porch extension, first floor rear and side extension and conversion of existing attached garage. Including new render finish to front elevation and installation of 4 no. additional windows to existing dwelling (3 no. at ground floor and 1 no. at first floor level). (Amended Plans)

As published by the council, reference LA04/2026/0164/F

Timeline

Dates from the published record

  1. 3 Feb 2026

    Received by Belfast

  2. 4 Feb 2026

    Validated

    Checked as complete and ready for consideration.

  3. 8 Jun 2026

    Decision issued: Granted

  4. 22 Jul 2026

    Added to PlanIndex

What a grant of permission means

The process from here

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

About full applications applications

How this application type works

A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.

More on full applications applications in our guide

Nearby applications

Within 500 metres

  • LA04/2025/2054/F Awaiting decision

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  • 24 Clonelly Avenue, Belfast, BT11 8LG

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  • 29 Edenmore Drive, Belfast, BT11 8LT

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    19 Feb 2026 385m away Full applications
  • LA04/2025/1786/PAN Awaiting decision

    Former Cross & Passion School site, Glen Road, and existing All Saints Glen Road Campus site, BT11 8BW

    Redevelopment of the former Cross & Passion School site, Glen Road, to create a new post-primary school campus for All Saints College over two sites with an enrolment of approximately 1,000 pupils. Proposal includes the construction of new school building on the former Cross & Passion site, and associated landscaping, play areas, new access road, parking and all other associated works. Proposal also includes the demolition of the existing All Saints Glen Road Campus buildings and redevelopment of the site to include new playing fields, changing pavilion and associated parking.

    24 Oct 2025 434m away
  • LA04/2026/0515/F Awaiting decision

    All Saints College Glen Road, Belfast and lands to the rear of Hamill Park and Nos 151 to 165A Glen Road (former Cross & Passion school site).

    Proposed construction of a new post-primary school campus on the former Cross & Passion site, with associated landscaping, play areas, new access road, parking and all other associated works. The proposal also includes the demolition of the existing All Saints Glen Road Campus buildings and redevelopment of the site to include new playing fields, changing pavilion and associated parking.

    27 Feb 2026 438m away Full applications

In Belfast

  • 9 Cranmore Park, Belfast, BT9 6JF

    Section 54 application for variation of condition 3 of LA04/2024/1982/F - Retention of clear and obscure glazing within windows

    12 May 2026 Full applications
  • 2a Deramore Park, Belfast, BT9 5JT

    Part-retrospective planning application for the removal of existing gates and hedge to facilitate widening of vehicular access. Installation of new sliding security/privacy gate.

    10 Mar 2026 Full applications
  • 29 Dalebrook Park, Belfast, BT11 9EW

    Two storey side and rear extension with patio

    28 Apr 2026 Full applications
  • 83 Wellington Park, Belfast, BT9 6DP

    Internal and external alterations to 3no. Existing flats including new re-positioned rear external stairway and fenestration

    27 Apr 2026 Full applications
  • 15-19 William Street South, Unit B, Belfast, BT1 4AR

    Alterations to shopfront, including relocation of enterance door, change of material and framing to side door, 3x signage and internal refurbishment

    27 May 2026 Full applications