Planning application
89 Sebastian Avenue Shenfield Essex CM15 8PP
Works: Extension Small domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Single storey rear extension and part conversion of garage to habitable accommodation.
As published by the council, reference 26/00417/HHA
Application record
- Reference
- 26/00417/HHA
- Type
- Householder Application
- Status
- Approved
- Decision
- Application Permitted
- Received
- 9 Apr 2026
- Validated
- 9 Apr 2026
- Decided
- 19 Jun 2026
- Ward
- Shenfield
- Decision by
- Delegated Decisions
- 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
-
26/00321/S192 Granted
89 Sebastian Avenue Shenfield Essex CM15 8PP
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.
Timeline
Dates from the published record
-
9 Apr 2026
Received by Brentwood
-
19 Jun 2026
Decision issued: Application Permitted
-
23 Jul 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
92 applications on PlanIndex · across 7 councils · 82% 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
- OFFICERS REPORT
- APPLICATION FORM
- 2076 03 REV D EXISTING GF, FF, RP
- 2076 04 REV D EXISTING SECTIONS
- 2076 05 REV D EXISTING ELEVATIONS
- 2076 08 REV D PROPOSED ELEVATIONS
- EXISTING AND PROPOSED 3D PLANS
- 2076 01 REV D THE LOCATION PLAN
- 2076 02 REV D BLOCK PLAN
- 2076 07 REV D PROPOSED SECTIONS
- 2076 06 REV D PROPOSED GF, FF, RP
Trade members open them from here.
Open the documentsWhat this grant of permission means
Brentwood granted permission on 19 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 householder applications
Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
89 Sebastian Avenue Shenfield Essex CM15 8PP
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.
Granted Lawful development Loft or dormer 12 docs -
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
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 -
89 Sebastian Avenue Shenfield Essex CM15 8PP
89% 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 Extension Loft or dormer 12 docsSmall domestic -
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 -
83 Sebastian Avenue Shenfield Brentwood Essex CM15 8PP
Demolition of existing garage, increase in height of ridge to create new floor, construction of two story front and side extension. New open porch with pitched roof. Fenestration and roof alterations.
Refused Householder Extension Roofing +2 7 docsSmall domestic
Other householder applications
In Brentwood
-
26/00467/HHA Granted
14 Friars Avenue Shenfield Essex CM15 8HY
Erection of a single storey outbuilding (Retrospective)
-
26/00166/HHA Granted
53 Kilworth Avenue Shenfield Essex CM15 8PT
Enlargement of existing dwelling comprising side extension at first floor level, two storey rear extension with single storey rear projection, raising and extending of existing hipped roof to accommodate en-suite bedroom in newly formed roofspace, formation of 2 no. rear dormers, provision of 3 no. front roof lights and 1 no. rear roof light, new front porch (open), changes to existing fenestration and new external materials treatment.
-
26/00404/HHA Refused
2 Chapel Croft Ingatestone Essex CM4 0BU
Front single storey infill extension to include widening of porch and alterations to external materials to include black cladding.
-
26/00858/HHA Awaiting decision
10 Britannia Road Warley Essex CM14 5LD
Demolition of existing rear ground floor single storey projection and construction of a single storey rear extension and terrace (retrospective)
-
26/00556/HHA Granted
34 Hillside Walk Brentwood Essex CM14 4RB
Demolition of garage and shed. Construction of two storey side extension, single storey side and rear extensions, addition of chimney and front entrance porch, flat roof dormer to the rear and two rooflights, extension to rear patio and alterations to fenestration