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Planning application

26/00564/CLEU

1 Sish Close Stevenage Herts SG1 3LT

Awaiting decision Stevenage Cert. of Lawful EXISTING use

Proposal

Lawful Development Certificate (Existing) for a Two storey side and rear extension

As published by the council, reference 26/00564/CLEU

Timeline

Dates from the published record

  1. 28 Jul 2026

    Received by Stevenage

  2. 29 Jul 2026

    Validated

    Checked as complete and ready for consideration.

  3. 1 Aug 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.

What happens while it is decided

The process from here

This application is with Stevenage 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 lawful development applications

How this application type works

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

Nearby applications

Within 500 metres

  • 26/00177/FPH Awaiting decision

    1 Sish Close Stevenage Herts SG1 3LT

    Retrospective consent for the construction of a two storey side and rear extension

    24 Feb 2026 0m away Householder
  • 26/00396/TPTPO Granted

    41 Sish Lane Stevenage Herts SG1 3LS

    Works to trees protected by TPO 94: Oak (T1) - fell and remove stump, plant 1no. replacement tree; Oak (T2) - reduce crown 1m, thin crown 20%, remove epicormic growth and ivy.

    18 May 2026 173m away Trees
  • 26/00443/COND Decided

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    Discharge of condition 9 (Construction Traffic Management Plan) attached to planning permission reference number 25/00894/FP.

    8 Jun 2026 217m away Conditions
  • 26/00403/FPH Granted

    2 Lintott Close Stevenage Herts SG1 3LZ

    Installation of a Air Source Heat Pump to the front elevation of the property

    21 May 2026 313m away Householder
  • 26/00408/FP Awaiting decision

    Land To The West Of The Tarmac Tennis Courts King George V Playing Field Sish Lane Stevenage Herts SG1 3LS

    Installation of Space Age Musical Pavilion

    22 May 2026 314m away Full applications
  • 25/00884/FP Awaiting decision

    Aldi Stores Fairlands Way Stevenage Herts SG1 1FZ

    Incorporation of existing car park into foodstore car park, creation of a pedestrian route and ancillary works

    15 Dec 2025 335m away Full applications

In Stevenage

  • 26/00553/CLPD Awaiting decision

    8 Pigeonswick Close Stevenage Herts SG1 2GU

    Lawful Development Certificate (Proposed) for single storey rear extension

    27 Jul 2026 Lawful development
  • 26/00555/CLPD Awaiting decision

    25 Neptune Gate Stevenage Herts SG2 7SH

    Lawful Development Certificate (Proposed) for loft conversion

    27 Jul 2026 Lawful development
  • 26/00492/CLPD Granted

    42 Brimstone Drive Stevenage Herts SG1 4FX

    Lawful Development Certificate (Proposed) for loft conversion with rear dormer and 3 velux to front

    30 Jun 2026 Lawful development
  • 26/00524/CLPDFT Granted

    75 Wheatlands Stevenage Herts SG2 0JU

    Lawful Development Certificate (Proposed) construction of loft conversion.

    14 Jul 2026 Lawful development
  • 26/00527/CLPD Awaiting decision

    47 Nodes Drive Stevenage Herts SG2 8AJ

    Lawful Development Certificate (Proposed) for detached garden room

    16 Jul 2026 Lawful development