Royal Veterinary College Hawkshead Lane North Mymms AL9 7TA

1. 30 Jul 2026

   Received by Welwyn Hatfield

2. 3 Aug 2026

   Validated

   Checked as complete and ready for consideration.

3. 9 Aug 2026

   Added to PlanIndex

4. 31 Aug 2026

   Status changed to Under Consideration

   Previously Under Consultation.

5. Decision

   Awaiting decision

   Decision expected by 28 September 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Welwyn Hatfield took a median of 58 days over the applications it decided in the last year.

This application is with Welwyn Hatfield 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.

A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.

More on full applications applications in our guide

• Hawkshead Lane North Mymms Brookmans Park Hatfield AL9 7TA

  6/2023/0424/PN15 Submitted 23 Feb 2023 64m away

  Erection of a 15m high slim-line monopole with 3 no. antennas, 3 no. equipment cabinets and ancillary development

  Refused Prior approval

• Small Animal Hospital at the Hawkshead Campus of the Royal Veterinary College AL9 7TA

  6/2026/0765/EIA Submitted 30 Apr 2026 144m away

  Request for a screening opinion for proposal to implement the proposals for a new Small Animal Hospital as per the Approved Hawkshead Campus Masterplan (2018): Request for an Environmental Impact Assessment (EIA) Screening Opinion under Regulations 5 and 6 of the Town and Country Planning (E nvironmental Impact Assessment) Regulations 2017 (as amended)

  Decided Outline

• Royal Veterinary College Hawkshead Lane North Mymms AL9 7TA

  6/2026/1030/FULL Submitted 11 Jun 2026 188m away

  Proposed new manège with associated lighting, fencing, landscaping, and associated works

  Granted Full applications

• 24 Hawkshead Lane North Mymms AL9 7TB

  6/2026/0700/HOUSE Submitted 20 Apr 2026 446m away

  Alteration and extension to roof with the insertion of a new rooflight. Garage conversion involving the replacement of garage door with window

  Refused Householder Extension Loft or dormer +1
  Small domestic

• 22 Hawkshead Lane Hatfield AL9 7TB

  6/2021/2348/LAWP Submitted 9 Aug 2021 489m away

  Certificate of lawfulness for the erection of a 3m two storey rear extension

  Granted Lawful development Extension

• 22 Hawkshead Lane Hatfield AL9 7TB

  6/2021/2347/LAWP Submitted 9 Aug 2021 489m away

  Certificate of lawfulness for the creation of loft conversion incorporating hip to gable enlargements, introduction of rear dormer and insertion of front, side and rear roof lights.

  Granted Lawful development Loft or dormer

• 6/2026/0929/FULL Granted

  Old Owen's Sports Ground Coopers Lane Potters Bar EN6 4NF

  Installation of 1 no. single padel court

  27 May 2026 Full applications
• 6/2026/0740/FULL Withdrawn

  Land to the rear of 8 Birds Close Welwyn Garden City AL7 4AR

  Erection of a single storey detached dwelling with basement

  27 Apr 2026 Full applications
• 6/2026/1231/FULL Withdrawn

  St Johns Church Of England Jmi School Lemsford Village Lemsford Welwyn Garden City AL8 7TR

  Installation of new fencing and gates across the school boundary adjacent to the main road

  13 Jul 2026 Full applications
• 6/2026/0960/FULL Refused

  15 Tiger Moth Way Hatfield AL10 9LT

  Change of use of general amenity land to residential garden and erection of a 2 metre high timber boundary fence following removal of existing hedge and boundary treatment

  1 Jun 2026 Full applications
• 6/2026/0300/FULL Refused

  Warren Lodge Stables Great North Road Hatfield AL9 5JX

  Change of use of land to use as a Gypsy/Traveller caravan site, comprising 9 pitches each accommodating two caravans, including no more than one static caravan/mobile home per pitch, together with the laying of hardstanding and erection of acoustic fence

  19 Feb 2026 Full applications