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Planning application

26 Lower Mardley Hill Welwyn AL6 0UQ

Refused Welwyn Hatfield 6/2021/0972/HOUSE HOUSEHOLDER APPLICATION

Works: Extension Loft or dormer Demolition Windows or glazing Small domestic

Read from the description, not a valuation. How we read the register

At appeal, which passes the decision to the national inspectorate. Anyone who commented before is normally able to comment again.

Proposal

Erection of two storey side and rear extensions and a first floor rear extension, insertion of 6 x side facing dormer windows and 3 x side facing roof lights to facilitate extension of existing first floor plan. Alterations to fenestration on existing front, side and rear elevations and demolition of outbuilding attached to existing garage, to facilitate erection of new detached outbuilding.

As published by the council, reference 6/2021/0972/HOUSE

Application record

Reference
6/2021/0972/HOUSE
Type
HOUSEHOLDER APPLICATION
Status
Appeal Decided - Allowed
Decision
Refused
Received
25 Mar 2021
Validated
25 Mar 2021
Decided
20 May 2021
Ward
Welwyn East
Parish
Welwyn
Decision by
Delegated
Postcode
AL6 0UQ

Timeline

Dates from the published record

  1. 25 Mar 2021

    Received by Welwyn Hatfield

  2. 20 May 2021

    Decision issued: Refused

  3. 9 Aug 2026

    Added to PlanIndex

What happens at appeal

The process from here

This application is at appeal, which passes the decision from the council to the national planning inspectorate, or in Scotland usually to a local review body first. The appeal considers the scheme afresh against the same policies.

Anyone who commented on the original application is normally notified and can comment again within the appeal deadline. Appeal decisions take months rather than weeks, and the outcome replaces the council's decision.

About householder applications

How this application type works

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

Nearby applications

Within 500 metres

  • 4 Marlborough Close Welwyn AL6 0UG

    6/2026/0674/HOUSE Submitted 16 Apr 2026 47m away

    Erection of single storey rear infill extension

    Granted Householder Extension
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  • 9 Mardley Hill Welwyn AL6 0UE

    6/2026/1198/HOUSE Submitted 10 Jul 2026 89m away

    83% historically approved · decision due ~4 Sep

    Erection of single storey front, side and rear extension, raising the existing roof and formation of rear dormer. Alterations to the fenestration, including, installation of new windows and doors and external rendering and cladding, following the demolition of garage and porch

    Awaiting decision Householder Extension Loft or dormer +2
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  • 1A Marlborough Close Welwyn AL6 0UG

    6/2022/2782/HOUSE Submitted 7 Dec 2022 103m away

    Erection of front porch, and part two, part single storey side and rear extension incorporating conversion of existing garage space and elongation of existing rear dormer window. Elongation of front dormer window and external alterations. Change of external materials and landscape works

    Granted Householder Extension Loft or dormer +1 2 docs
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  • 19 Robbery Bottom Lane Welwyn AL6 0UL

    6/2021/1409/HOUSE Submitted 4 May 2021 114m away

    Demolition of existing rear terrace and construction of part side, part rear double storey extension with associated dormer windows and single storey front extension.

    Granted Householder Extension Loft or dormer +2
    Small domestic

  • 8 Robbery Bottom Lane Welwyn AL6 0UW

    6/2026/1436/FULL Submitted 14 Aug 2026 117m away

    81% historically approved · decision due ~9 Oct

    Erection of two 2-bed chalet bungalows (Use Class C3) following the subdivision of existing residential plot

    Awaiting decision Full applications

  • 16 Marlborough Close Welwyn AL6 0UG

    6/2026/0351/HOUSE Submitted 26 Feb 2026 124m away

    Erection of single storey porch extension, garage conversion, first floor front extension with replacement dormer roof, enlarged first floor rear dormers, reroofing whole roof with a slate coloured plain tile and rendering of front elevation

    Granted Householder Extension Loft or dormer
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In Welwyn Hatfield

  • 6/2026/1228/HOUSE Granted

    109 Mount Way Welwyn Garden City AL7 4LA

    Erection of single storey front extension

    13 Jul 2026 Householder
  • 6/2026/1011/HOUSE Granted

    5 Brookside Crescent Cuffley Potters Bar EN6 4QW

    Erection of rear extension, single storey side extension, new porch, additions/alterations to windows on side elevation and demolition of garage

    9 Jun 2026 Householder
  • 6/2026/0703/HOUSE Granted

    57 Great North Road Brookmans Park AL9 6LA

    Erection of part double part single storey rear extension, single storey front porch extension, raising of roof and eaves to accommodate loft conversion, alterations to materials and fenestration, erection of front boundary wall and gates

    20 Apr 2026 Householder
  • 6/2026/0534/HOUSE Refused

    16 Chipmunk Chase Hatfield AL10 9GH

    Retention of single storey rear extension and garage conversion to study/office

    24 Mar 2026 Householder
  • 6/2026/1175/HOUSE Granted

    5A Honeycroft Welwyn Garden City AL8 6HR

    Erection of a single storey rear extension, alterations to opening on side elevation and garden room with covered area following demolition of conservatory

    7 Jul 2026 Householder