25 Aldwickbury Crescent Harpenden Hertfordshire Al5 5Sa

1. 9 Mar 2026

   Received by St Albans

2. 10 Mar 2026

   Validated

   Checked as complete and ready for consideration.

3. 12 May 2026

   Decision issued: DC3 Conditional Permission

4. 31 Aug 2026

   Added to PlanIndex

The council has decided this application; the published outcome sits in the record above and the decision notice on the council portal carries the detail, including any conditions.

If permission was granted, work must normally begin within three years of the decision. If it was refused, the applicant can appeal within the statutory time limit or submit a revised scheme.

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

• 41 Aldwickbury Crescent Harpenden Hertfordshire Al5 5Sa

  5/2026/0868 Submitted 1 May 2026 0m away

  Single storey front & rear extensions

  Decided Householder Extension 10 docs
  Small domestic

• 9 Aldwickbury Crescent Harpenden Hertfordshire Al5 5Rs

  5/2026/0388 Submitted 2 Mar 2026 151m away

  Part single storey front extension with pitched roof to existing extension and alterations to openings

  Decided Householder Extension 9 docs
  Small domestic

• 6 Wendover Close Harpenden Hertfordshire Al5 5Sh

  5/2016/3026 Submitted 5 Oct 2016 152m away

  Two storey front and single storey rear extensions, garage conversion with pitched roof and alterations to openings

  Decided Householder Extension 10 docs
  Small domestic

• 31 The Cleave Harpenden Hertfordshire Al5 5Sj

  5/2026/0234 Submitted 9 Feb 2026 157m away

  Replacement windows and external cladding, garage conversion and replacement roof finishes and warm roof deck. New roof light to front and rear elevations

  Decided Householder Loft or dormer Roofing +1 14 docs
  Small domestic

• 14 Tylers Harpenden Hertfordshire Al5 5Rt

  5/2026/0348 Submitted 24 Feb 2026 172m away

  Single storey front extension & conversion of existing garage plus addition of patio doors to rear elevation

  Decided Householder Extension Windows or glazing 16 docs
  Small domestic

• 7 Tylers Harpenden Hertfordshire Al5 5Rt

  5/2025/2282 Submitted 15 Dec 2025 172m away

  Single-storey rear extension, ground-floor front infill extension and first-floor front extension

  Decided Householder Extension 13 docs
  Small domestic

• 5/2026/1173 Decided

  6 Longacres St Albans Hertfordshire Al4 0Dr

  Demolition of existing outbuilding and construction of single storey rear extension

  18 Jun 2026 Householder
• 5/2026/0299 Decided

  12 Rowlatt Drive St Albans Hertfordshire Al3 4Nb

  Demolition of existing side and rear extension and construction of a canopy porch, part single, part two storey front, two storey side and single storey rear extension

  17 Feb 2026 Householder
• 5/2026/0318 Refused

  7 Ardens Way St Albans Hertfordshire Al4 9Uw

  Demolition of existing side canopy, detached garage, rear patio and garden shed and the construction of two storey front, side and rear extensions, together with part single storey rear extension and a front porch canopy and extension to driveway

  19 Feb 2026 Householder
• 5/2026/1139 Decided

  50 Fontmell Close St Albans Hertfordshire Al3 5Hu

  Single storey rear extension and side windows with top openers over 1.7m high

  10 Jun 2026 Householder
• 5/2026/0525 Decided

  11 Hillside Road Harpenden Hertfordshire Al5 4Bs

  Garage conversion, with part roof extension and new front porch extension

  17 Mar 2026 Householder