18 Mount Keen Great Ashby Stevenage Hertfordshire SG1 6BP

1. 14 Oct 2026

   Received by North Hertfordshire

2. 27 Oct 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 9 December 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   North Hertfordshire took a median of 48 days over the applications it decided in the last year.

This application is with North Hertfordshire for determination, against a statutory target of eight weeks. Over the last year North Hertfordshire's median decision took 48 days. More in our guide to how long planning decisions take.

The published feed does not state which type of application this is; the register entry on North Hertfordshire's portal will say. Our guide explains the common types.

• 44 Ryders Hill Great Ashby Stevenage Hertfordshire SG1 6BJ

  22/02415/FPH Submitted 7 Oct 2022 50 yards away

  Retention of alterations to ground levels to facilitate rear patio (as indicated by plans received 29 November 2022).

  Granted Householder 15 docs
  Domestic

• 14 Mount Keen Great Ashby Stevenage Hertfordshire SG1 6BP

  26/00771/LDCP Submitted 8 Apr 2026 50 yards away

  Single storey rear extension following removal of existing conservatory

  Granted Lawful development Extension 6 docs
  Small domestic

• 12 Ryders Hill Great Ashby Stevenage Hertfordshire SG1 6BJ

  26/01444/FPH Submitted 23 Jun 2026 50 yards away

  Insertion of rear box dormer, raised ridge height and front rooflight to facilitate loft conversion into habitable accommodation.

  Granted Loft or dormer Roofing

• 11 Pentland Rise Great Ashby Stevenage Hertfordshire SG1 6BW

  23/01048/NMA Submitted 5 May 2023 200 yards away

  Insertion of obscured window to first floor side elevation (as Non-Material Amendment to planning permission 23/00003/FPH granted 23.02.2023)

  Decided Amendments Windows or glazing 5 docs

• 11 Pentland Rise Great Ashby Stevenage Hertfordshire SG1 6BW

  23/00003/FPH Submitted 2 Jan 2023 200 yards away

  Two storey side extension following demolition of existing side extension (as a variation of planning permission 22/01971/FPH granted 22.09.2022)

  Granted Householder Extension Demolition 10 docs
  Domestic

• 237 Cleveland Way Great Ashby Stevenage Hertfordshire SG1 6BX

  23/00370/NCS Submitted 21 Feb 2023 250 yards away

  Single storey rear extension with the following dimension: Length as measured from rear wall of original dwelling - 4.0 metres

  Granted Outline Extension
  Small domestic