Mayfair Buildings 5-11 William Street South BT1 4FD, 5-11 Arthur Square Bt1 4AR, Belfast, BT1 4FD

This site has had 3 applications since 2025: 3 approved, 0 refused.

• LA04/2025/2005/LBC Granted

  Mayfair Buildings 5-11 William Street South BT1 4FD, 5-11 Arthur Square Bt1 4AR, Belfast, BT1 4FD

  Change of use of existing upper floors from offices (Class B1) to hostel accommodation (Class C1/Sui Generis) providing 136 bedspaces, with associated lounge, kitchen, and ancillary facilities; and formation of a new entrance lobby within one small ground-floor retail unit fronting William Street South. All other ground-floor retail units remain unchanged. Internal alterations only with no increase in building footprint or external envelope. Minor elevation changes to create door entrances. Building lies within the Belfast City Centre Conservation Area.

  Submitted 18 Nov 2025 Heritage and listed buildings
• LA04/2025/1912/DCA Granted

  Mayfair Buildings 5-11 William Street South BT1 4FD, 5-11 Arthur Square Bt1 4AR, Belfast, BT1 4FD

  Change of use of existing upper floors from offices (Class B1) to hostel accommodation (Class C1/Sui Generis) providing 136 bedspaces, with associated lounge, kitchen, and ancillary facilities; and formation of a new entrance lobby within one small ground-floor retail unit fronting William Street South. All other ground-floor retail units remain unchanged. Internal alterations only with no increase in building footprint or external envelope. Minor elevation changes to create door entrances. Building lies within the Belfast City Centre Conservation Area.

  Submitted 9 Nov 2025 Heritage and listed buildings

1. 9 Nov 2025

   Received by Belfast

2. 26 Nov 2025

   Validated

   Checked as complete and ready for consideration.

3. 22 Jul 2026

   Added to PlanIndex

Belfast granted permission, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• Mayfair Buildings 5-11 William Street South BT1 4FD, 5-11 Arthur Square Bt1 4AR, Belfast, BT1 4FD

  LA04/2025/1912/DCA Submitted 9 Nov 2025 0.1 miles away

  Change of use of existing upper floors from offices (Class B1) to hostel accommodation (Class C1/Sui Generis) providing 136 bedspaces, with associated lounge, kitchen, and ancillary facilities; and formation of a new entrance lobby within one small ground-floor retail unit fronting William Street South. All other ground-floor retail units remain unchanged. Internal alterations only with no increase in building footprint or external envelope. Minor elevation changes to create door entrances. Building lies within the Belfast City Centre Conservation Area.

  Granted Heritage and listed buildings 55 docs

• Mayfair Buildings 5-11 William Street South BT1 4FD, 5-11 Arthur Square Bt1 4AR, Belfast, BT1 4FD

  LA04/2025/2005/LBC Submitted 18 Nov 2025 0.1 miles away

  Change of use of existing upper floors from offices (Class B1) to hostel accommodation (Class C1/Sui Generis) providing 136 bedspaces, with associated lounge, kitchen, and ancillary facilities; and formation of a new entrance lobby within one small ground-floor retail unit fronting William Street South. All other ground-floor retail units remain unchanged. Internal alterations only with no increase in building footprint or external envelope. Minor elevation changes to create door entrances. Building lies within the Belfast City Centre Conservation Area.

  Granted Heritage and listed buildings 71 docs

• Mayfair Building, 8 Arthur Square, Belfast, BT1 4FD

  LA04/2025/1384/LBC Submitted 19 Aug 2025 0.1 miles away

  Replacement of flat roof coverings including insulation upgrades, stone repairs and replacement. Removal and disposal of external lighting.

  Granted Heritage and listed buildings 15 docs

• 9 Arthur Square, Belfast, BT1 4FD

  LA04/2023/3141/LBC Submitted 25 Apr 2023 0.1 miles away

  Alterations to listed building to facilitate shop signage andprojecting sign.

  Refused Heritage and listed buildings 22 docs

• 9 Arthur Square, Belfast, BT1 4FD

  LA04/2023/3137/A Submitted 25 Apr 2023 0.1 miles away

  1 Shop sign, 1 Projecting sign

  Refused Advertising 16 docs

• 4-14 Arthur Street Existing Listed building with retail units at ground floor level, retail storage and facilities at first flor level and vacant office space on upper floors.

  LA04/2025/2095/DC Submitted 4 Dec 2025 0.1 miles away

  100% historically approved · decision due ~29 Jan

  Discharge Condition 2 of Planning Permission LA04/2025/1066/F (Management Plan)

  Awaiting decision Conditions 3 docs

• LA04/2025/1954/F Granted

  16 Sans Souci Park, Belfast, BT9 5BZ

  Solar Panels on the south facing roof slope

  Received 13 Nov, published by the council 22 Jul 2026 Full applications
• LA04/2026/0711/F Granted

  10 Casaeldona Rise, Belfast, BT6 9RA

  single-storey rear extension and first-floor rear extension; alterations to windows

  Received 15 Apr, published by the council 22 Jul 2026 Full applications
• LA04/2026/0421/F Withdrawn

  Footpath south of 272-274 Upper Newtownards Road, Belfast, County Antrim, BT4 3EU

  Existing 11.5m lamp post to be removed and replaced with a 20m street pole with a wraparound cabinet. Proposed 9no. antennas, 2no. GPS nodes, 1no. bowler cabinet, 1no. cabinet, and ancillary upgrades thereto.

  Received 5 Mar, published by the council 22 Jul 2026 Full applications
• LA04/2026/0374/F Granted

  17 Castlemore Avenue, Belfast, BT6 9RF

  Retention of lean to garage to side of dwelling and area of hardstanding to front (Amended Description and plans).

  Received 2 Mar, published by the council 22 Jul 2026 Full applications
• LA04/2025/0635/F Refused

  142 Ravenhill Road, Belfast, BT6 8ED

  Change of use from ground floor shop (A1) to studio apartment (C1) alterations to building facades and additional site works.

  Received 14 Apr, published by the council 6 Aug 2026 Full applications