Planning application
89 Sebastian Avenue Shenfield Essex CM15 8PP
Works: Loft or dormer
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Application for a Lawful Development Certificate for a Proposed Use or Development for a hip to gable roof with rear dormer, together with rooflights on the front roofslope.
As published by the council, reference 26/00321/S192
Application record
- Reference
- 26/00321/S192
- Type
- Certificate of Lawfulness (proposed)
- Status
- Decided
- Decision
- Granted As published: Lawful
- Received
- 19 Mar 2026
- Validated
- 19 Mar 2026
- Decided
- 1 Jun 2026
- Ward
- Shenfield
- Decision by
- Delegated Decision COND S191/S192
- Postcode
- CM15 8PP
Site history
Applications at this address on the Brentwood register
This site has had 3 applications since 2026: 2 approved, 0 refused.
-
26/00837/HHA Awaiting decision
89 Sebastian Avenue Shenfield Essex CM15 8PP
Extend hipped roof to gable and add rear dormer, construct first floor side and single storey rear extensions
-
26/00417/HHA Granted
89 Sebastian Avenue Shenfield Essex CM15 8PP
Single storey rear extension and part conversion of garage to habitable accommodation.
Timeline
Dates from the published record
-
19 Mar 2026
Received by Brentwood
-
1 Jun 2026
Decision issued: Lawful
-
9 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
A9 Architecture Ltd Agent, an architecture practice registered in Benfleet
Active · incorporated 2010 · Benfleet
116 applications on PlanIndex · across 9 councils · 85% granted
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
12 documents on file for this application
- DECISION NOTICE
- REPORT
- APPLICATION FORM
- 04 - REV C - EXISTING SECTIONS
- 05 - REV C - EXISTING ELEVATIONS
- 01 - REV C - SITE LOCATION PLAN
- 02 - REV C - EXISTING AND PROPOSED BLOCK PLAN
- 03 - REV C - EXISTING GF, FF & ROOF PLANS
- EXISTING AND PROPOSED FRONT & REAR 3D VIEWS - REV C
- 08 - REV C - PROPOSED SECTIONS
- 06 - REV C - PROPOSED GF, FF & LOFT FLOOR PLANS
- 09 - REV C - PROPOSED ELEVATIONS
Watch members (£5 a month) open the document list from here.
Open the documentsWhat this grant of permission means
Brentwood granted permission on 1 June 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
About lawful development applications
A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
89 Sebastian Avenue Shenfield Essex CM15 8PP
87% historically approved · decision due ~13 Oct
Extend hipped roof to gable and add rear dormer, construct first floor side and single storey rear extensions
Awaiting decision Householder Extension Loft or dormer 12 docsSmall domestic -
89 Sebastian Avenue Shenfield Essex CM15 8PP
Single storey rear extension and part conversion of garage to habitable accommodation.
Granted Householder Extension 12 docsSmall domestic -
87 Sebastian Avenue Shenfield Essex CM15 8PP
Demolish garage, raise ridge and add part single part two storey, part first floor side and rear extensions, add rear dormer, rooflights, solar panels and front entrance, provision of side garage/store, alterations to fenestration. Construct raised patio, pergola and outbuilding within rear garden (revised application to 25/00982/HHA)
Granted Householder Extension Loft or dormer +2 22 docsSmall domestic -
85 Sebastian Avenue Shenfield Brentwood Essex CM15 8PP
Demolition of existing dwelling, construction of new detached dwelling.
Refused Full applications New dwelling Demolition 11 docsDomestic -
85 Sebastian Avenue Shenfield Brentwood Essex CM15 8PP
Variation of condition 2 of application 22/00180/FUL (Demolition of existing dwelling, construction of new detached dwelling) for the change of external materials on the western elevation bay from brick, render and vertical tiles, to brick.
Granted Full applications New dwelling Demolition 9 docsDomestic -
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.
Refused Loft or dormer Windows or glazing
Other lawful development applications
In Brentwood
-
26/00679/S192 Awaiting decision
Fieldings 21 Rectory Chase Doddinghurst Essex CM15 0QN
Application for a Lawful Development Certificate for a proposed use or development for a disability access prorch.
-
26/00680/S191 Awaiting decision
Chivers Chivers Road Stondon Massey Essex CM15 0LL
Application for a Lawful Development certificate for an existing use or operation or activity for single-storey detached outbuilding to be used as a gym, garage and wellness space
-
26/00414/S192 Granted
262 Ongar Road Brentwood Essex CM15 9EA
Application for a Certificate of Lawfulness for proposed use or development for single storey side and rear extensions.
-
26/00914/S192 Awaiting decision
Hall Farm House Hall Lane Ingatestone Essex CM4 9NP
Application for a Lawful Development Certificate for a Proposed Use or Development to increase height of flank wall, remove side dormers and extend cat slide roof into hipped roof and enlarge front hip.
-
26/00907/S191 Awaiting decision
Cheale Meats Ltd Orchard Farm Little Warley Hall Lane West Horndon Little Warley Essex CM13 3EN
Application for a Lawful Development Certificate for an Existing Use or Operation or Activity to confirm a lawful material operation has been undertaken in accordance with Planning Permission 22/01205/FUL.