51 Trevor Crescent Northampton NN5 5PG

1. 11 Aug 2025

   Received by West Northamptonshire

2. 7 Oct 2025

   Decision issued: Approval

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

• 86 Windsor Crescent Northampton NN5 5AW

  2026/0934/FULL Submitted 24 Feb 2026 194m away

  Single storey rear extension, two-storey side extension, loft conversion with rear dormers together with new hard standing with drop kerb (part retrospective)

  Granted Full applications Extension Loft or dormer 15 docs
  Small domestic

• 51 Windsor Crescent Northampton NN5 5AP

  2026/1812/FULL Submitted 14 Apr 2026 224m away

  89% historically approved · decision due ~9 Jun

  Single-storey and two-storey front extension and erection of wall and railings on front and side boundary.

  Awaiting decision Full applications Extension 22 docs
  Small domestic

• 10A The Avenue Dallington Northampton NN5 7AN

  2024/4493/TPO Submitted 24 Sep 2024 264m away

  Reduction of 2 x Beech Trees TPO 176 - T1 & T2

  Granted Trees 6 docs

• Elmdale, The Avenue, Dallington, Northampton, NN5 7AJ

  2024/4193/FULL Submitted 4 Sep 2024 277m away

  Demolish & replace Front Porch. Erect gazebo to rear of building & lean-to structure to side of the building.

  Granted Full applications Extension Demolition 15 docs
  Small domestic

• 5 The Avenue Dallington Northampton NN5 7AJ

  2024/3331/COND Submitted 3 Jul 2024 277m away

  Discharge of condition 7 ( Tree Protection Plan) & Conditon 10 (Ecology Survey) of planning permission WNN/2023/0479. Outline Planning Application for the formation of new building plot to provide single detached dwelling and garage at 5 The Avenue, Dallington, Northampton, NN5 7AJ

  Granted Conditions New dwelling Trees 8 docs
  Domestic

• Pinetrees The Avenue Dallington Northampton NN5 7AJ

  2026/1599/TPO Submitted 21 Apr 2026 277m away

  To remove two mature Black Pine trees (Pinus nigra) by felling to ground level.

  Granted Trees 9 docs

• 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