4 Monmouth Grove Kingsmead Milton Keynes MK4 4AY

1. 20 Jan 2023

   Received by Milton Keynes

2. 28 Mar 2023

   Decision issued: Approved

3. 1 Sep 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

• 7 Markenfield Place Kingsmead Milton Keynes MK4 4AP

  19/02401/FUL Submitted 19 Sep 2019 71m away

  Demolition of existing conservatory and proposed single storey rear extension

  Granted Full applications Extension Demolition 6 docs
  Small domestic

• 24 Carisbrooke Way Kingsmead Milton Keynes MK4 4BE

  20/01629/CLUP Submitted 8 Jul 2020 72m away

  Certificate of lawful development for the proposed loft conversion with pitched roof dormer extensions to rear roofslope and rooflights to front roofslope.

  Granted Lawful development Extension Loft or dormer 5 docs

• 7 BRIDGNORTH DRIVE, KINGSMEAD, MILTON KEYNES, MK4 4AJ

  PLN/2026/1152 Submitted 1 Jun 2026 106m away

  Certificate of lawfulness for proposed erection of a single storey side extension

  Granted Lawful development Extension 4 docs
  Small domestic

• 16 Picton Street Kingsmead Milton Keynes MK4 4EH

  23/00417/HOU Submitted 17 Feb 2023 108m away

  The removal of existing uPVC and brick conservatory, and the erection of proposed two storey rear extension

  Granted Householder Extension 6 docs
  Small domestic

• 4 Bridgnorth Drive Kingsmead Milton Keynes MK4 4AN

  20/01362/CLUP Submitted 11 Jun 2020 126m away

  Certificate of lawful development for the proposed demolition of conservatory and construction of single storey extension to the rear of the dwelling

  Granted Lawful development Extension Demolition 5 docs
  Small domestic

• 4 Bridgnorth Drive Kingsmead Milton Keynes MK4 4AN

  20/00328/FUL Submitted 6 Feb 2020 127m away

  Demolish existing garage and rebuild

  Granted Full applications Demolition 5 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