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 50 yards 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 50 yards 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 50 yards 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 50 yards 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 50 yards away

  1 Shop sign, 1 Projecting sign

  Refused Advertising 16 docs

• 5 ARTHUR SQUARE TOWN PARKS BELFAST ANTRIM BT1 4FD

  LA04/2023/2757/A Submitted 24 Feb 2023 50 yards away

  1 Shop sign

  Withdrawn Advertising 9 docs

• LA04/2025/1410/F Granted

  40 Sydenham Park, Belfast, BT4 1PW

  2 storey side extension. Widening of driveway

  Received 27 Aug, published by the council 22 Jul 2026 Full applications
• LA04/2025/1117/F Withdrawn

  3 Clara Crescent Upper, Belfast, BT5 5EQ

  Change of use from 4 bed dwelling to 5 bed / 5 person HMO including single storey extension to kitchen

  Received 23 Jun, published by the council 6 Aug 2026 Full applications
• la04/2026/0151/F Granted

  42 Clara Park, Belfast, BT5 6FE

  Demolition of existing single storey rear extensions to make way for a proposed new single storey extension to the rear

  Received 2 Feb, published by the council 22 Jul 2026 Full applications
• LA04/2026/1426/F Granted

  6 North Sperrin, Belfast, BT5 7HU

  Single storey rear and side extension and new rear patio. Demoliton of existing garage.

  Received 11 Aug, published by the council 29 Aug 2026 Full applications
• LA04/2026/1219/F Granted

  96 Rosebery Road, Belfast, BT6 8JF

  Replacement single storey rear extension

  Received 6 Jul, published by the council 22 Jul 2026 Full applications