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
- Granted As published: 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
114 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
- 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
Watch members (£5 a month) open the document list 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 0.3 miles
-
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 -
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 -
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 householder applications
In Brentwood
-
26/00843/HHA Awaiting decision
Greenwoods 68 Selwood Road Brentwood Essex CM14 4QA
Demolition of existing single storey garage and construction of a part single and part two storey side and rear extension. The existing house roof is to be removed and a new roof created to cover the existing house and the new extensions. The new roof is to contain a second floor room and will include a rear dormer and 3 rooflights to front elevation.
-
26/01011/HHA Awaiting decision
Harrington House 24 Worrin Road Shenfield Essex CM15 8DE
Add hipped roof to front bay window
-
26/00988/HHA Awaiting decision
57 Kilworth Avenue Shenfield Essex CM15 8PT
Raise ridge to create two storey dwelling with rear extensions, pergola and layout drive
-
26/00986/HHA Awaiting decision
66 Avenue Road Ingatestone Essex CM4 9HB
Part single part two storey rear extension, part conversion of garage to habitable accommodation, apply render finish to dwelling, add AC unit to side
-
26/00980/HHA Awaiting decision
7 Weald Road Brentwood Essex CM14 4SX
Remove porch and construct part single part two storey front extension