89 Sebastian Avenue Shenfield Essex CM15 8PP Data via plota.co.uk

26/00837/HHA - Householder Application Pending Consideration
Extensions & alterations

Proposal

Extend hipped roof to gable and add rear dormer, construct first floor side and single storey rear extensions Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
around 18 Aug 2026
Decision
Expected by 13 Oct 2026

Under consideration

No decision has been issued yet. Plota predicts a decision between 13 Oct 2026 and 23 Oct 2026, from Brentwood's recent extensions.

The consultation period closed on 25 Sept 2026.

Documents 12

Statements & assessments 1

PDF SUPPORTING STATEMENT Supporting Documents · 28 Jul 2026 View ↗

Plans & drawings 9

PDF 07 /G PROPOSED ROOF PLAN Drawing · 18 Aug 2026 View ↗ PDF 02/G BLOCK PLAN Block Plan · 28 Jul 2026 View ↗ PDF 03/G EXISTING FLOOR LAYOUT Drawing · 28 Jul 2026 View ↗ PDF 04/G EXISTING SECTION Drawing · 28 Jul 2026 View ↗ PDF 05/G EXISTING ELEVATIONS Drawing · 28 Jul 2026 View ↗ PDF 06/G PROPOSED FLOOR LAYOUT Drawing · 28 Jul 2026 View ↗ PDF 08/G PROPOSED SECTION Drawing · 28 Jul 2026 View ↗ PDF 09/G PROPOSED ELEVATIONS Drawing · 28 Jul 2026 View ↗ PDF 01/G SITE LOCATION Site Plan · 28 Jul 2026 View ↗

Application forms 1

PDF APPLICATION FORM Application Form · 28 Jul 2026 View ↗

Other documents 1

PDF 3D VISUAL REV G Supporting Documents · 28 Jul 2026 View ↗

All documents on the council site ↗

Site constraints 1

Also on the record
Inside the Brentwood built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt · No listed building at the site

Checked on 6 October 2026. Historic England, the Environment Agency, Natural England and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

Building

Floor area97 m² (1,044 sq ft)
Energy ratingC (73 out of 100)
PropertySemi-detached house, 5 habitable rooms
Built1950 to 1966
HeatingBoiler and radiators, mains gas
WallsCavity wall, filled cavity

From the energy performance certificate lodged in July 2025, the latest held for this property. The building may have changed since. View the certificate

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Other new applications on this street

27 Aug 2026Pending

81 Sebastian Avenue Shenfield Essex CM15 8PP

Demolition of existing bungalow and detached garage. Construction of replacement...

26/00984/FUL
2 Jul 2026Refused

90 Sebastian Avenue Shenfield Essex CM15 8PP

Remove rear pitched roof, remove hip and form gable. Proposed flat roof dormer a...

26/00749/HHA
8 Jun 2026Approved

25 Sebastian Avenue Shenfield Essex CM15 8PN

Discharge of condition 4 (Detail of crown roof) of original application 25/01127...

25/01127/COND/1

Nearby new applications

1 Oct 2026Pending

85 Chelmsford Road Shenfield Essex CM15 8QP

Discharge of Condition 4 (Water Efficiency) of application 25/00421/FUL (Demolit...

25/00421/COND/3
21 Sept 2026Pending

50 Rayleigh Road Hutton Essex CM13 1BA

5 x Yew trees on property boundary, propose to reduce height by 3 metres to allo...

26/01074/TPO
10 Sept 2026Pending

2A Bowmont Close Hutton Essex CM13 1EB

1 x Oak Crown Reduction - Reducing the height and spread of the tree back to pre...

26/01037/TPO
28 Aug 2026Pending

57 Kilworth Avenue Shenfield Essex CM15 8PT

Raise ridge to create two storey dwelling with rear extensions, pergola and layo...

26/00988/HHA
27 Aug 2026Pending

81 Sebastian Avenue Shenfield Essex CM15 8PP

Demolition of existing bungalow and detached garage. Construction of replacement...

26/00984/FUL
26 Aug 2026Pending

Land Off Chelmsford Road Shenfield Essex

Discharge of Section 106 planning obligations relating to Habitat Management and...

22/01324/CONENQ/1

Important details

Council
Brentwood
Application type
Householder Application
Postcode
CM15 8PP
Received
around 18 Aug 2026
Validated
18 Aug 2026
Ward
Shenfield
Case officer
Show
Target decision
13 Oct 2026
Applicant
Show
Agent
A9 Architecture

Decision outlook

Day 52 of the 56-day target. Brentwood usually decides extensions by day 59.

Day 527 days to the predicted decision (day 59)
45%decided within 8 weeks
85%approved
341decided in the last year

Plota live figures for extensions decided by Brentwood in the last twelve months, from validation. Brentwood decision record →

Public comments

No public comments yet.

8 neighbours consulted · Last counted 7 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15100666
Planning Portal ref
PP-15100666
Comments by
25 Sept 2026
Statutory expiry
13 Oct 2026
Env. assessment
No

Historical activity at this location

25 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2025 Approved
87 Sebastian Avenue Shenfield Essex CM15 8PP
Demolish garage, raise ridge and add part single part two storey, part first floor side a…
25/00982/HHA
2025 Refused
87 Sebastian Avenue Shenfield Essex CM15 8PP
Demolition of Existing Side Shed, Proposed Double Storey Side and Rear Extension, Alterat…
24/01412/HHA
2024 Approved
82 Sebastian Avenue Shenfield Essex CM15 8PP
Proposed single storey first floor rear extension
24/01285/HHA
2024 Approved
82 Sebastian Avenue Shenfield Essex CM15 8PP
Proposed single storey first floor rear extension
24/01285/HHA
2024 Approved
83 Sebastian Avenue Shenfield Essex CM15 8PP
Single storey rear extension and alterations to fenestration
24/00903/HHA
2024 Approved
83 Sebastian Avenue Shenfield Essex CM15 8PP
Single storey rear extension and alterations to fenestration
24/00903/HHA
2024 Approved
72 Sebastian Avenue Shenfield Essex CM15 8PP
Demolish conservatory and add part single, part two storey rear extension with juliette b…
24/00726/HHA
2024 Approved
72 Sebastian Avenue Shenfield Essex CM15 8PP
Demolish conservatory and add part single, part two storey rear extension with juliette b…
24/00726/HHA
2024 Approved
83 Sebastian Avenue Shenfield Essex CM15 8PP
Single storey side and rear extensions. Fenestration alterations.
24/00206/HHA
2024 Approved
83 Sebastian Avenue Shenfield Essex CM15 8PP
Single storey side and rear extensions. Fenestration alterations.
24/00206/HHA
2023 Approved
88 Sebastian Avenue Shenfield Brentwood Essex CM15 8PP
Application for a Lawful Development Certificate for a proposed use or development for a…
23/00985/S192
2023 Approved
88 Sebastian Avenue Shenfield Brentwood Essex CM15 8PP
Application for a Lawful Development Certificate for a proposed use or development for a…
23/00985/S192
2023 Approved
88 Sebastian Avenue Shenfield Brentwood Essex CM15 8PP
Single storey rear extension
23/00986/HHA
2023 Approved
88 Sebastian Avenue Shenfield Brentwood Essex CM15 8PP
Single storey rear extension
23/00986/HHA
2023 Approved
83 Sebastian Avenue Shenfield Brentwood Essex CM15 8PP
Demolition of existing garage. Increase in height of ridge to create new floor. Construct…
23/00629/HHA
2023 Approved
83 Sebastian Avenue Shenfield Brentwood Essex CM15 8PP
Demolition of existing garage. Increase in height of ridge to create new floor. Construct…
23/00629/HHA
2023 Approved
82 Sebastian Avenue Shenfield Brentwood Essex CM15 8PP
Weeping willow- remove the tree, large stem snapped out from the tree leaving the tree ve…
23/00518/TPO
2023 Approved
82 Sebastian Avenue Shenfield Brentwood Essex CM15 8PP
Weeping willow- remove the tree, large stem snapped out from the tree leaving the tree ve…
23/00518/TPO
2023 Refused
83 Sebastian Avenue Shenfield Brentwood Essex CM15 8PP
Demolition of existing garage, increase in height of ridge to create new floor, construct…
23/00200/HHA
2023 Refused
83 Sebastian Avenue Shenfield Brentwood Essex CM15 8PP
Demolition of existing garage, increase in height of ridge to create new floor, construct…
23/00200/HHA
2016 Approved
67 Sebastian Avenue Shenfield Essex CM15 8PP
Demolish existing garage and construct part single storey part two storey side and rear e…
16/01081/FUL
2016 Approved
93 Sebastian Avenue Shenfield Essex CM15 8PP
Retention of front dormers (retrospective)
16/00758/FUL
2016 Withdrawn
67 Sebastian Avenue Shenfield Essex CM15 8PP
Demolish garage and construct part single storey part two storey side and rear extension…
16/00627/FUL
2016 Approved
94 Hunter Avenue Shenfield Essex CM15 8PG
Application for a Lawful Development Certificate for a loft conversion to include hip to…
16/00170/S192
2016 Approved
94 Hunter Avenue Shenfield Essex CM15 8PG
Single Storey Rear Extension
16/00169/FUL
Brentwood
Planning Authority Score
0.9/10
Poor
#294 of 296 councils
Relevant to this application:
Householder decisions

Brentwood is one of the slowest councils in England for householder decisions, ranking #278 out of 296. The council extends the time limit on 68% of applications - one of the highest rates in England. Expect your application to take longer than the standard deadline. Householder applications are slightly less likely to be approved here (85%) than the national average (90%).

Among the slowest councils in England
for householder decisions
These figures are council-wide context, not a prediction for this application. View full council performance
Brentwood decision statistics
Based on MHCLG data, the year to March 2026
83%
Overall approval rate
Below avg (87%) #234 of 296
85%
Householder approved
Below avg (90%) #248 of 296
35%
Decided in 8 weeks
Below avg (63%) #278 of 296
68%
Extended time limit
Above avg (41%) #283 of 296
76%
Minor dwellings approved
97 decided (1-9 homes)
64%
Major dwellings approved
11 decided (10+ homes)
79%
Change of use approved
19 decided
717
Total decisions
124 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.