5 Portchester Gardens Northampton NN3 9UP

1. 8 Sep 2025

   Received by West Northamptonshire

2. 17 Dec 2025

   Validated

   Checked as complete and ready for consideration.

3. 20 Feb 2026

   Decision issued: Approval

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

• 7 Donovan Court Northampton NN3 3DD

  2024/3802/FULL Submitted 31 Jul 2024 147m away

  Convert existing garage into an annexe by extending the ground floor and extending first floor.

  Refused Full applications 17 docs

• 7 Donovan Court, Northampton, NN3 3DD

  2025/5309/FULL Submitted 15 Dec 2025 147m away

  Proposed garage with glazed link to dwelling

  Refused Full applications Windows or glazing 11 docs
  Domestic

• Mercedes Benz Sytner Riverside Prime Carousel Way Northampton NN3 9HG

  2026/2055/FULL Submitted 6 May 2026 271m away

  Side extension to form new drive in service lobby and minor site alterations

  Granted Full applications Extension 14 docs

• Riverside Prime, Unit 8, Carousel Way, Northampton, NN3 9HG

  2025/4502/FULL Submitted 10 Oct 2025 271m away

  Change of use from a warehouse (Use Class B1,B2,B8) to an indoor padel tennis, wellness and therapy area and associated facilities, (Use Class E) parking and turning

  Granted Full applications 42 docs

• 12 Strelley Avenue Northampton NN3 9UH

  2026/1029/FULL Submitted 10 Mar 2026 281m away

  Proposed porch and garage conversion with associated internal and external works

  Granted Full applications Extension 8 docs
  Small domestic

• 10 Nesbitt Close Northampton NN3 3DQ

  2026/1594/FULL Submitted 20 Apr 2026 328m away

  Single storey side extension

  Granted Full applications Extension 8 docs
  Small domestic

• 2026/2780/LDP Granted

  3 Hunt Close Towcester NN12 7AD

  Lawful development certificate (proposed) for demolition of existing conservatory and construction of a single storey rear extension

  26 Jun 2026 Lawful development
• 2026/2296/LDP Granted

  19 Deanshanger Road Wicken MK19 6BS

  Lawful development certificate (proposed) for construction of outbuilding

  22 May 2026 Lawful development
• 2026/1969/LDP Granted

  7 Bickerstaffes Road Towcester NN12 6EG

  Garage conversion

  27 Apr 2026 Lawful development
• 2026/2401/LDP Granted

  Stoneacre The Green Marston St Lawrence OX17 2DB

  Lawful development certificate (proposed) for construction of detatched garage

  10 Jun 2026 Lawful development
• 2026/1646/LDP Refused

  36 Spinney Hill Crescent Northampton NN3 6DL

  Use of the property by up to two children living together as a single household, with care provided in a domestic setting

  30 Mar 2026 Lawful development