57 Leyside Court Northampton NN3 8XT

1. 27 Apr 2026

   Received by West Northamptonshire

2. 18 Jun 2026

   Decision issued: Refusal

3. 27 Jul 2026

   Added to PlanIndex

West Northamptonshire refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. More in our guide to what happens after a planning decision.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 17 Overleys Court Northampton NN3 8XX

  2025/4615/FULL Submitted 15 Oct 2025 150 yards away

  Single storey extension to rear

  Granted Full applications Extension 15 docs
  Small domestic

• 12 Farmyard Close Northampton NN3 8BU

  2024/5325/FULL Submitted 15 Nov 2024 300 yards away

  Installation of Air Source Heat Pump

  Granted Full applications 14 docs

• 9 Mortar Pit Road Northampton NN3 5BL

  2025/5270/FULL Submitted 9 Dec 2025 300 yards away

  Proposed garage conversion into habitable accomodation

  Granted Full applications 9 docs

• 88 Crestline Court Northampton NN3 8XZ

  2024/2321/FULL Submitted 22 Apr 2024 0.3 miles away

  Change of use from dwellinghouse (Use Class C3) to House in Multiple Occupation (Use Class C4) for 7 occupants

  Withdrawn Full applications 17 docs
  Domestic

• 57 Wysall Road Northampton NN3 8TP

  2026/2291/HH Submitted 21 May 2026 0.3 miles away

  Conversion of the existing garage into a bedroom with an en-suite bathroom, together with a first-floor side extension to enlarge the existing bedroom and provide an additional en-suite bathroom.

  Granted Householder Extension 26 docs
  Domestic

• 73 Lowlands Close, Northampton, NN3 5EX

  2024/4176/FULL Submitted 3 Sep 2024 0.3 miles away

  Proposed Change of Use from dwelling (C3 Use) to Children's Home (C2 Use) for up to 3 no. children and conversion of existing garage to habitable room

  Granted Full applications 21 docs
  Domestic

• 2026/3534/LDE Granted

  Plumpton Barn Plumpton End Paulerspury NN12 7NJ

  Lawful development certificate (existing) for the retention of pond within the residential curtilage of the dwelling.

  Received 13 Aug, published by the council 9 Sep 2026 Lawful development
• 2026/3278/LDP Granted

  26 Perry Street Northampton NN1 4HW

  Erection of a single storey rear extension.

  Received 27 Jul, published by the council 15 Aug 2026 Lawful development
• 2026/3389/LDP Refused

  23 Greenell Close Deanshanger MK19 6UX

  Lawful development certificate (proposed) for single storey rear extension and wood burning stove to include external flue.

  Received 4 Aug, published by the council 1 Sep 2026 Lawful development
• 2026/3274/LDP Granted

  Orchard Lodge 8A Glassthorpe Lane Harpole NN7 4DU

  Lawful development certificate (proposed) for the proposed provision of a twin unit mobile home within the garden of the lawful dwelling house for use as additional accommodation by one household

  Received 27 Jul, published by the council 22 Aug 2026 Lawful development
• 2026/3038/LDE Granted

  3 Huntsham Close Northampton NN3 3AX

  Certificate of Lawfulness for Existing Use - C4 House in Multiple Occupation (HMO).

  Received 14 Jul, published by the council 10 Aug 2026 Lawful development