18B Gainsborough Avenue St Albans Hertfordshire Al1 4Nl

1. 13 Mar 2026

   Received by St Albans

2. 16 Mar 2026

   Validated

   Checked as complete and ready for consideration.

3. 16 Jun 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

• 28 Gainsborough Avenue St Albans Hertfordshire Al1 4Nl

  TP/2026/0035 Submitted 28 Jan 2026 0m away

  Proposed Works: Fell one Cherry tree located in the rear garden. Reasons for Work: The tree is exhibiting significant decay to the basal heartwood, compromising its structural integrity. Due to the advanced nature of the decay and the associated risk of f

  Granted Trees 2 docs

• Lichfield 30A Gainsborough Avenue St Albans Hertfordshire Al1 4Nl

  TP/2026/0248 Submitted 4 May 2026 0m away

  Noticed the cherry tree in my garden has large cracks on trunk and wood inside looks dead. Tree itself has no leaves or blossom and is likely to become a hazard. House is in conservation area and at 1.5m the trunk is approx 120mm in diameter. Do I need pe

  Decided Trees 3 docs

• 28 Gainsborough Avenue St Albans Hertfordshire Al1 4Nl

  5/2025/2359 Submitted 24 Dec 2025 0m away

  Demolition of existing dwelling and construction of two detached four bedroom dwellings with associated works and wall mounted heat pump for each dwellings

  Refused Demolition 25 docs
  Domestic

• 30 Gainsborough Avenue St Albans Hertfordshire Al1 4Nl

  5/2026/1015 Submitted 21 May 2026 0m away

  Demolition of existing side covered storage and construction of a new single storey garage with part pitched roof and part flat roof; double storey front extension (in line with previously approved extension)

  Decided Householder Extension Demolition 12 docs
  Small domestic

• 13 Gainsborough Avenue St Albans Hertfordshire Al1 4Nj

  TP/2026/0295 Submitted 9 Jun 2026 41m away

  Side up side boundary

  Decided Trees 2 docs

• 13 Gainsborough Avenue St Albans Hertfordshire Al1 4Nj

  5/2026/1291 Submitted 3 Jul 2026 41m away

  Single storey wrap around extension both side of house and rear elevation, internal alterations, install solar panels to existing house and annexe in rear garden.

  Decided Householder Extension 22 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