31 SYON GARDENS, NEWPORT PAGNELL, MK16 0JU

1. 5 Nov 2025

   Received by Milton Keynes

2. 17 Dec 2025

   Decision issued: Approved

3. 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

• 17 FRIARY GARDENS, NEWPORT PAGNELL, MK16 0JZ

  PLN/2026/1007 Submitted 15 May 2026 105m away

  Certificate of lawfulness for the proposed erection of single storey rear extension

  Granted Lawful development Extension 5 docs
  Small domestic

• 80 BURGESS GARDENS, NEWPORT PAGNELL, MK16 0NU

  PLN/2025/2370 Submitted 6 Nov 2025 142m away

  Certificate of Lawfulness for the proposed rear extension with roof lights

  Granted Lawful development Extension Loft or dormer 10 docs

• 1 WATERLOW CLOSE, NEWPORT PAGNELL, MK16 0JS

  PLN/2025/2318 Submitted 31 Oct 2025 147m away

  Certificate of lawfulness for the proposed conversion of the garage into living accommodation, including associated alterations

  Granted Lawful development 5 docs

• 5 Greenwich Gardens Newport Pagnell MK16 0NP

  19/02129/FUL Submitted 19 Aug 2019 169m away

  Dormer loft conversion and part replacement cladding to front elevation

  Granted Full applications Loft or dormer 9 docs

• 3 TABARD GARDENS, NEWPORT PAGNELL, MK16 0LX

  PLN/2026/1322 Submitted 15 Jun 2026 232m away

  Proposed double garage conversion into habitable space

  Granted Householder 8 docs
  Small domestic

• 97 GREENWICH GARDENS, NEWPORT PAGNELL, MK16 0NR

  PLN/2026/0638 Submitted 24 Mar 2026 250m away

  Alterations to garage roof including solar panels to accommodate hydraulic lift for private car maintenance purposes

  Granted Householder 6 docs
  Domestic

• PLN/2026/1586 Withdrawn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