29 Smithergill Court, Heelands, Milton Keynes, MK13 7LT

1. 9 Dec 2025

   Received by Milton Keynes

2. 15 Dec 2025

   Validated

   Checked as complete and ready for consideration.

3. 27 Jan 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

• 29 Smithergill Court, Heelands, Milton Keynes, MK13 7LT

  PLN/2025/2347 Submitted 4 Nov 2025 0m away

  Certificate of Lawfulness for the existing use of the property as C4 House in Multiple Occupation

  Refused Lawful development 8 docs

• 30 HASGILL COURT, HEELANDS, MILTON KEYNES, MK13 7LR

  PLN/2026/1195 Submitted 5 Jun 2026 128m away

  Non-material amendment seeking to amend condition 3 (relating to permission ref. PLN/2026/0200 for the continued use of the former dwellinghouse (Class C3) as a 4-bed HMO (Class C4)

  Granted Amendments 4 docs
  Domestic

• 30 Hasgill Court, Heelands, Milton Keynes, MK13 7LR

  PLN/2026/0200 Submitted 3 Feb 2026 128m away

  Continued use of the former dwellinghouse (Class C3) as a 4-bed HMO (Class C4)

  Granted Full applications 7 docs
  Domestic

• 40 HASGILL COURT, HEELANDS, MILTON KEYNES, MK13 7LR

  PLN/2025/2617 Submitted 8 Dec 2025 128m away

  The separation of the existing dwellinghouse into two flats

  Refused Full applications New dwelling 13 docs
  Several homes

• 30 Hasgill Court, Heelands, Milton Keynes, MK13 7LR

  PLN/2025/2290 Submitted 29 Oct 2025 128m away

  Change of use of from a single dwelling (Use Class C3) to a 5-bedroom, 6-person HiMO (Use Class C4)

  Refused Full applications 8 docs
  Domestic

• 51 Langcliffe Drive Heelands Milton Keynes MK13 7LA

  19/03249/FUL Submitted 5 Dec 2019 173m away

  Rear dormer to the dwellinghouse

  Granted Full applications Loft or dormer 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