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Planning application

LA04/2025/1911/F

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

Granted Belfast Full

Proposal

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.

As published by the council, reference LA04/2025/1911/F

Timeline

Dates from the published record

  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

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

  • 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.

    9 Nov 2025 0m away Heritage and listed buildings
  • 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.

    18 Nov 2025 0m away Heritage and listed buildings
  • Mayfair Building, 8 Arthur Square, Belfast, BT1 4FD

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

    19 Aug 2025 2m away Heritage and listed buildings
  • LA04/2025/2095/DC Awaiting decision

    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.

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

    4 Dec 2025 21m away Conditions
  • LA04/2026/0791/A Awaiting decision

    Fat Face, 12 Victoria Square, Belfast, BT1 4QB

    1 Fascia Shop sign & high level signs

    29 Apr 2026 40m away Advertising
  • 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 50m 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

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  • 2a Deramore Park, Belfast, BT9 5JT

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

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    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