548-554 Elder House, Milton Keynes, MK9 1LR

1. 24 Nov 2025

   Received by Milton Keynes

2. 7 Jan 2026

   Validated

   Checked as complete and ready for consideration.

3. 16 Mar 2026

   Decision issued: Approved

4. 10 Aug 2026

   Added to PlanIndex

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.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• The Old Bus Station, 401 Elder Gate, Station Square, Central Milton Keynes, MK9 1LR

  PRE/2026/1848 Submitted 2 Sep 2026 0m away

  83% historically approved · decision due ~29 Oct

  Pre-Application submission for the the extension, alterations and partial change of use of existing building to multi-use arena [circa 12,000 sqm] (Sui Generis) together with ancillary [community/retail/commercial uses (Classes Ea), Eb) and F2b)] and all associated landscaping, public realm and infrastructure works.. Related to PPA ref: 26/07010/PPA

  Awaiting decision Outline Extension

• 548-554 Elder House, Elder Gate, Central Milton Keynes, Milton Keynes, MK9 1LR

  PLN/2025/2507 Submitted 24 Nov 2025 0m away

  Alteration to external doors and windows on front elevation

  Granted Full applications Windows or glazing 8 docs

• 600 ELDER GATE, CENTRAL MILTON KEYNES, MILTON KEYNES, MK9 1LR

  PLN/2026/1534 Submitted 20 Jul 2026 0m away

  79% historically approved · decision due ~14 Sep

  Removal and replacement of external doors to the curtain wall system including the alteration and replacement of selected door sets to suit the internal layout.

  Awaiting decision Full applications 8 docs

• 600 ELDER GATE, CENTRAL MILTON KEYNES, MILTON KEYNES, MK9 1LR

  PLN/2026/1535 Submitted 20 Jul 2026 0m away

  73% historically approved · decision due ~14 Sep

  Certificate of lawfulness for the proposed separation of unit 600 into two retail premises for occupation under the existing use class, with associated alterations

  Awaiting decision Lawful development 7 docs

• 502 Elder Gate Central Milton Keynes Milton Keynes MK9 1LR

  22/03037/FUL Submitted 7 Dec 2022 69m away

  Installation of an additional front door to unit 502 and replacement of air condition plant on the roof

  Granted Full applications 12 docs

• Unit 1, Station House, 500 Elder Gate, Central Milton Keynes, Milton Keynes, MK9 1BB

  24/01887/FUL Submitted 27 Aug 2024 86m away

  Proposed installation of rooftop plant equipment, and installation of replacement aluminium framed single sliding door

  Granted Full applications 15 docs

• PLN/2026/1586 Withdrawn

  4 BROMHAM MILL, GIFFARD PARK, MILTON KEYNES, MK14 5QP

  Certificate of lawfulness for the proposed garage conversion and side extension

  29 Jul 2026 Lawful development
• PLN/2026/1370 Refused

  15 CASTLE ROSE, WOUGHTON PARK, MILTON KEYNES, MK6 3BQ

  Certificate of lawfulness for the proposed construction of a low brick wall with railings (1.5 m overall), brick piers, sliding gate set 5 m from road, and pedestrian gate within domestic curtilage

  29 Jun 2026 Lawful development
• PLN/2026/1393 Refused

  2 GREATCHESTERS, BANCROFT, MILTON KEYNES, MK13 0PA

  Certificate of lawfulness for the proposed demolition of existing conservatory, erection of a new rear extension, infill the space under the carport and loft conversion with a rear dormer

  2 Jul 2026 Lawful development
• PLN/2026/1741 Awaiting decision

  5 Spring Mews, Sherington, MK16 9FT

  Certificate of lawfulness for the existing detached rear outbuilding for use as a garden studio

  18 Aug 2026 Lawful development
• PLN/2026/1170 Granted

  61 WINDSOR STREET, BLETCHLEY, MILTON KEYNES, MK2 2LN

  Certificate of lawfulness for proposed loft conversion with rear and side dormer extension and rooflights to front roof slope

  2 Jun 2026 Lawful development