5 Mercia Gardens Northampton NN3 2SU

1. 24 Jul 2026

   Received by West Northamptonshire

2. 15 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 18 September 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   West Northamptonshire took a median of 67 days over the applications it decided in the last year.

This application is with West Northamptonshire for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.

More on householder applications in our guide

• 20 Norman Road Northampton NN3 2SG

  2024/4961/FULL Submitted 22 Oct 2024 105m away

  Single-storey rear extension and relocation of main entrance from side to front elevation

  Granted Full applications Extension 12 docs
  Small domestic

• Garages To Rear Of Norman Road Northampton NN3 2SG

  2024/2707/FULL Submitted 23 May 2024 105m away

  Existing garages to be removed to build a new dwelling

  Granted Full applications New dwelling 41 docs
  Domestic

• 27 Norman Road Northampton NN3 2SG

  2026/1298/PNHPD Submitted 24 Mar 2026 105m away

  Single storey rear extension

  Granted Prior approval Extension 7 docs
  Small domestic

• 38 Norman Road, Northampton, NN3 2SG

  2024/5028/PNHPD Submitted 28 Oct 2024 105m away

  Proposed single storey rear extension 6.0 x 3.25 x 3.0m

  Granted Prior approval Extension 8 docs
  Small domestic

• 541 Wellingborough Road Northampton NN3 3HU

  2026/1157/FULL Submitted 9 Mar 2026 221m away

  Formation of dropped kerb

  Granted Full applications 11 docs

• 290 Birchfield Road East Northampton NN3 2SY

  2026/0572/NMA Submitted 5 Feb 2026 233m away

  Non-Material Amendment to planning permission 2025/1207/FULL [Demolition of existing single-storey rear outbuilding and erection of a single-storey rear extension. Erection of single storey timber summerhouse to rear of garden] is sought to amend the width and roof height of the proposed extension, along with position of the bathroom wall corner to the north-west side. Additionally, change to the height of the obscure bathroom window and change from lantern roof light to flat roof light on the proposed extension.

  Granted Amendments Extension Loft or dormer +2 11 docs
  Small domestic

• 2026/2627/HH Granted

  506 Wellingborough Road Northampton NN3 3HX

  Rear Balcony extension and tree removal.

  17 Jun 2026 Householder
• 2026/2913/HH Refused

  21 Draycott Close Northampton NN3 3BD

  Proposed side extension with rear dormer

  7 Jul 2026 Householder
• 2026/2867/HH Granted

  1 Jones Close Brackley NN13 6JD

  Retrospective planning application for the retention of a timber-framed children’s play structure in the rear garden

  6 Jul 2026 Householder
• 2026/2488/HH Granted

  15 Valley Road Brackley NN13 7DQ

  Demolition of existing single storey rear extension, construction of single storey rear extension and new side window

  8 Jun 2026 Householder
• 2026/2935/HH Granted

  12 Primrose Hill, Daventry NN11 4GF

  Single-Storey Side Extension

  8 Jul 2026 Householder