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Planning application

37 Mardley Avenue Welwyn AL6 0TU

Refused Welwyn Hatfield 6/2025/2248/FULL FULL PERMISSION

Refused. Only the applicant can appeal, within the statutory time limit, and a revised scheme can be submitted instead.

Proposal

Erection of a single chalet dwelling

As published by the council, reference 6/2025/2248/FULL

Application record

Reference
6/2025/2248/FULL
Type
FULL PERMISSION
Status
Decided - Refused
Decision
Refused
Received
23 Oct 2025
Validated
14 Nov 2025
Decided
15 May 2026
Ward
Welwyn East
Parish
Welwyn
Decision by
Delegated
Postcode
AL6 0TU

Timeline

Dates from the published record

  1. 23 Oct 2025

    Received by Welwyn Hatfield

  2. 14 Nov 2025

    Validated

    Checked as complete and ready for consideration.

  3. 15 May 2026

    Decision issued: Refused

  4. 9 Aug 2026

    Added to PlanIndex

What refusal means

The process from here

The council refused this application for the reasons set out on the decision notice, which the council portal holds in full. Only the applicant can appeal a refusal; the time limit runs from the decision date and is shorter for householder schemes.

Refusal does not prevent a fresh attempt. Applicants often address the reasons for refusal and resubmit, so a refused scheme is not necessarily the end of proposals for the site.

About full applications applications

How this application type works

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

Nearby applications

Within 500 metres

  • 20 Mardley Heights Welwyn AL6 0SX

    6/2024/1895/TPO Submitted 1 Oct 2024 17m away

    2 x Silver birches branches thinned out. Fell 1 x Hornbeam. (TPO 641 G5 (2017))

    Refused Trees

  • 5 Mardley Heights Welwyn AL6 0TX

    6/2021/1299/TPO Submitted 22 Apr 2021 46m away

    Prune T1 Oak located at the front of property according to the following specifications: • Crown reduction by removing up to 2 meters growth pruning back to suitable growth points to leave a balanced crown Crown clean removing any damaged, diseased and deadwood Prune G1 Various Species, Beech, Berberis and flowering Current located at the front garden according to the following specifications: • Prune back hard garden side back to mainstem of Beech and following line down other species garden side Prune T3 Pine located at the front of property according to the following specifications: • Crown reduction by removing 1.5 meters growth in height pruning back to suitable growth points reduce lateral branches to leave a balanced crown Prune G3 Mixed Hegde located at the Left of driveway according to the following specifications: • Trim back sides and top to leave a tidy formative shaped hedge trimming back hard form driveway without cuasing possible future browning off Prune T1 Beech located at the left rear of house according to the following specifications: • Crown reduction by removing up to 2.5 meters growth pruning back to suitable growth points to leave a balanced crown bring down height enough but not too much as to keep privacy Crown clean removing any damaged, diseased and deadwood

    Granted Trees

  • 8 Mardley Heights Welwyn AL6 0TX

    6/2024/1922/TPO Submitted 8 Oct 2024 49m away

    Oak tree to reduce by 25% back to previous cuts (TPO 641 (2017))

    Granted Trees

  • 35 Mardley Hill Welwyn AL6 0TT

    6/2021/1099/HOUSE Submitted 6 Apr 2021 89m away

    Replacement garage

    Granted Householder
    Domestic

  • 28 Mardley Avenue Welwyn AL6 0TZ

    6/2022/2776/HOUSE Submitted 7 Dec 2022 95m away

    Erection of single storey part rear extension following the demolition of existing rear conservatory and the continuation of raised patio and partial garage conversion to form larger utility room and ensuite and installation of skylights.

    Granted Householder Extension Demolition
    Small domestic

  • 31 Mardley Hill Welwyn AL6 0TT

    6/2024/1990/TPO Submitted 16 Oct 2024 100m away

    13 x multi-stemmed beech (Fagus sylvatica) trees to the front of the property to be crown reduced by 20% and deadwood removed TPO 641 (2017) G6

    Granted Trees

In Welwyn Hatfield

  • 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