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Planning application

178 Knella Road Welwyn Garden City AL7 3NN

Awaiting decision Welwyn Hatfield 6/2026/1316/HOUSE HOUSEHOLDER APPLICATION

Works: Extension Domestic

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

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Erection of part single and part two storey rear extension with alterations to openings on rear elevation

As published by the council, reference 6/2026/1316/HOUSE

Application record

Reference
6/2026/1316/HOUSE
Type
HOUSEHOLDER APPLICATION
Status
Under Consideration
Received
27 Jul 2026
Validated
28 Jul 2026
Ward
Peartree
Decision by
Delegated
Postcode
AL7 3NN

Timeline

Dates from the published record

  1. 27 Jul 2026

    Received by Welwyn Hatfield

  2. 28 Jul 2026

    Validated

    Checked as complete and ready for consideration.

  3. 22 Aug 2026

    Added to PlanIndex

  4. 7 Sep 2026

    Status changed to Under Consideration

    Previously Under Consultation.

  5. Decision

    Awaiting decision

    Decision expected by 22 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.

What happens while it is decided

The process from here

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.

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

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