11 Rosebery Avenue Harpenden Hertfordshire Al5 2Qt

1. 22 Dec 2025

   Received by St Albans

2. 23 Dec 2025

   Validated

   Checked as complete and ready for consideration.

3. 10 Apr 2026

   Decision issued: DC3 Conditional Permission

4. 7 Sep 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

• 9 Rosebery Avenue Harpenden Hertfordshire Al5 2Qt

  5/2021/1575 Submitted 24 May 2021 0m away

  Erection of part two storey side extension and part single storey rear extension, with installation of rear dormer (resubmission following withdrawal of 5/2021/0488)

  Decided Householder Extension Loft or dormer 16 docs
  Small domestic

• 5 Rosebery Avenue Harpenden Hertfordshire Al5 2Qt

  5/2026/1003 Submitted 20 May 2026 0m away

  Proposed new 5-bed dwelling within existing residential plot with private off-street parking located to the front of site, refuse and recycling allocation, and private external amenity areas and new vehicle crossover

  Decided 31 docs
  Domestic

• 1A Rosebery Avenue Harpenden Hertfordshire Al5 2Qt

  5/2025/1378 Submitted 18 Jul 2025 0m away

  Condition 3 (further details - windows) of planning permission 5/2024/1316 dated 03/03/2025 for Proposed garage conversion into habitable accommodation, replacement window/doors and alterations to window/door openings, new gable roof and entrance steps to

  Decided Conditions Windows or glazing 3 docs

• 22 Longcroft Avenue Harpenden Al5 2Qz

  TP/2017/0445 Submitted 1 Sep 2017 51m away

  2 x Tree of unknown species - Fell.

  Granted Trees 2 docs

• The Croft 4 Longcroft Avenue Harpenden Hertfordshire Al5 2Qz

  TP/2026/0214 Submitted 7 May 2026 51m away

  T1- Pittsporum tree to fell to stump level as it is outgrowing it's position and start to effect the boundary wall.

  Granted Trees 3 docs
  Small domestic

• 18 Longcroft Avenue Harpenden Al5 2Qz

  TP/2017/0518 Submitted 9 Oct 2017 51m away

  1 x Laburnum - Fell.

  Granted Trees 2 docs

• 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