20 Lynmouth Avenue Northampton NN3 3LT

1. 29 Apr 2026

   Received by West Northamptonshire

2. 7 Jul 2026

   Decision issued: Approval

3. 27 Jul 2026

   Added to PlanIndex

West Northamptonshire granted permission on 7 July 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• Land Rear Of 371 To 373 Billing Road East Northampton NN3 3LL

  2025/4667/S73 Submitted 21 Oct 2025 250 yards away

  Variation of condition 2 (approved plans) to amend the design and layout of dwellinghouse and fenestrations to planning permission 2024/1083/FULL (Proposed erection of new dwelling to rear, off road car parking and amendments to access lane)

  Granted Amendments New dwelling 12 docs
  Domestic

• 351 Billing Road East Northampton NN3 3LL

  2024/3984/FULL Submitted 13 Aug 2024 250 yards away

  Rear ground floor extension

  Granted Full applications Extension 17 docs

• 377 Billing Road East Northampton NN3 3LL

  2025/3319/NMA Submitted 13 Aug 2025 250 yards away

  Non material amendment to extend the roof of the porch, window in front elevation and front door to the side elevation of porch to WNN/2023/0629 (Single Storey rear extension and front porch)

  Granted Amendments Extension Windows or glazing 5 docs
  Small domestic

• 340 Billing Road East Northampton NN3 3LJ

  2024/3904/FULL Submitted 6 Aug 2024 300 yards away

  Demolition of conservatory. Construction of side two-storey extension with single-storey garage extension to the front and single-storey extension to the rear, with associated internal alterations. Front and rear alterations to windows and doors.

  Granted Full applications Extension Demolition +1 11 docs
  Small domestic

• 288 Billing Road East Northampton NN3 3LJ

  2026/1202/FULL Submitted 9 Mar 2026 300 yards away

  88% historically approved · decision due ~4 May

  Single-storey rear extension, first-floor extension above the existing garage and store room.

  Awaiting decision Full applications Extension 21 docs
  Small domestic

• 324 Billing Road East Northampton NN3 3LJ

  2026/2184/S73 Submitted 13 May 2026 300 yards away

  Roof amended from pitched to flat. First floor extension reduced in size. Variation of condition 2 of approved 2025/1548/FULL [Two storey front, side and two storey part single storey rear extension to include demolition of existing conservatory]

  Granted Amendments Extension Demolition 18 docs
  Small domestic

• 2026/1666/FULL Granted

  9 Astbury Close Daventry NN11 4RL

  Erection of a single storey garden office.

  Received 31 Mar, published by the council 27 Jul 2026 Full applications
• 2026/1458/FULL Granted

  Land at 73 Fulford Drive Northampton NN2 7NU

  Construction of 2no. 1 bedroom dwellings with associated access, parking and landscaping

  Received 19 Mar, published by the council 27 Jul 2026 Full applications
• 2025/5064/FULL Refused

  Land adjacent to Ivy House 18 Back Lane Northampton NN4 6BX

  Erection of 4 no. dwellings. (Revision of application 2025/1129/FULL).

  Received 25 Nov, published by the council 4 Aug 2026 Full applications
• 2026/1589/FULL Refused

  4 Burns Street Northampton NN1 3QE

  Replacement of PVCu woodgrain effect windows to front of property

  Received 26 Mar, published by the council 27 Jul 2026 Full applications
• 2026/1449/FULL Granted

  66 Farmers Drive Brackley NN13 6HY

  Proposed rear part side extension with associated internal and external works.

  Received 9 Apr, published by the council 27 Jul 2026 Full applications