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Planning application

26/00450/S192

90 Sebastian Avenue Shenfield Essex CM15 8PP

Decided Brentwood Certificate of Lawfulness (proposed)

Proposal

Application for a Lawful Development Certificate for a proposed use or development to reconfigure existing roof pitch to a proposed flat roof rear dormer with juliette balcony and 3 x roof lights to front elevation

As published by the council, reference 26/00450/S192

Timeline

Dates from the published record

  1. 29 Apr 2026

    Received by Brentwood

  2. 2 Jul 2026

    Decision issued: Not Lawful

  3. 23 Jul 2026

    Added to PlanIndex

After the decision

The process from here

The council has decided this application; the published outcome sits in the record above and the decision notice on the council portal carries the detail, including any conditions.

If permission was granted, work must normally begin within three years of the decision. If it was refused, the applicant can appeal within the statutory time limit or submit a revised scheme.

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

  • 26/00749/HHA Awaiting decision

    90 Sebastian Avenue Shenfield Essex CM15 8PP

    Remove rear pitched roof, remove hip and form gable. Proposed flat roof dormer and roof windows to front elevation.

    2 Jul 2026 1m away Householder
  • 26/00562/HHA Awaiting decision

    34 Oliver Road Shenfield Essex CM15 8QA

    Part two-storey, part single-storey, side and rear extension with new porch.

    27 May 2026 46m away Householder
  • 26/00417/HHA Granted

    89 Sebastian Avenue Shenfield Essex CM15 8PP

    Single storey rear extension and part conversion of garage to habitable accommodation.

    9 Apr 2026 61m away Householder
  • 21/00871/FUL Refused

    50 Oliver Road Shenfield Brentwood Essex CM15 8QA

    Demolition of existing bungalow, construction of two three bedroom dwellings with off street parking

    2 Jun 2021 88m away Full applications
  • 21/00960/S192 Decided

    84 Hunter Avenue Shenfield Brentwood Essex CM15 8PG

    Application for a Lawful Development Certificate for a proposed use or development of a loft conversation to include a hip to gable extension, dormer to rear with juliette balcony. Single storey rear extension with roof lights. Alteration to fenestration.

    27 May 2021 152m away Lawful development
  • 23/00070/S192 Decided

    109 Hunter Avenue Shenfield Brentwood Essex CM15 8PG

    Application for a Lawful Development Certificate for a proposed use or development for conversion of garage into habitable living space. Fenestration alterations.

    24 Jan 2023 161m away Lawful development

In Brentwood

  • 26/00609/S192 Decided

    Willow Brook Primary School Rosen Crescent Hutton Essex CM13 2TU

    Application for a Lawful Development Certificate for a proposed development for the construction of a new building to the rear of the school to be used as two classrooms, WC and kitchen area. replacing the hard surfaced pavement with paving stones, removing two sheds and providing two raised planters

    29 May 2026 Lawful development
  • 26/00606/S192 Decided

    The Laurels 143 Ingrave Road Brentwood Essex CM13 2AA

    Application for a Lawful Development Certificate for a Proposed Use or Development for the siting of a mobile home on residential land for ancillary residential use.

    29 May 2026 Lawful development
  • 26/00695/S192 Awaiting decision

    3 Albany Road Pilgrims Hatch Essex CM15 9PJ

    Application for a lawful development certificate for a proposed use or development for the construction of a single storey rear extension and x1 roof light

    22 Jul 2026 Lawful development
  • 26/00734/S192 Decided

    43 Rose Valley Brentwood Essex CM14 4HT

    Application for a Lawful Development Certificate for a Proposed Use or Development for a rear box dormer with Juliet balcony and 3 rooflights to the front elevation.

    30 Jun 2026 Lawful development
  • 26/00783/S192 Awaiting decision

    42 Edwards Way Hutton Essex CM13 1BT

    Application for a Lawful Development Certificate for a Proposed Use or Development for the demolition of existing rear extension and construction of a single storey rear extension. A hip to gable loft conversion with rear dormer and 3 no rooflights to front roof slope.

    13 Jul 2026 Lawful development