7 Third Avenue Chelmsford Essex CM1 4EX Data via plota.co.uk

26/00611/NMAT/1 Pending Consideration
Admin / procedural

Proposal

Non Material Amendment for planning permission - 26/00611/FUL - (Single storey rear extension and loft conversion including velux windows to front and a rear dormer) Existing stairway window: Retention of the existing side window opening, with the existing window replaced by a fixed, single-pane clear-glazed unit. The existing opening, size and position are retained. The replacement window is to be fixed rather than opening for safety reasons adjacent to the proposed staircase. Rear dormer: Adjustment of the front face of the approved rear dormer by approximately 150 mm to align with and bear directly onto the existing masonry wall below, following detailed structural coordination. The approved dormer parapet, roof form and overall design remain otherwise unchanged. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
22 Sept 2026
Decision
Expected by 20 Oct 2026

Under consideration

No decision has been issued yet. A decision is expected by 20 Oct 2026.

Documents

View the documents on the council's website ↗

Associated applications 2

Site constraints 3

Local nature reserve about 309 m away: Chelmer Valley Riverside
Work nearby can need a habitats assessment.
Harm to a protected site is only accepted where there is no alternative and an overriding public interest.
Also on the record
National infrastructure project about 1967 m away: Norwich to Tilbury; Inside the Chelmsford built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 6 October 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. Historic England, the Environment Agency, Natural England, the Planning Inspectorate 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.

Sales history 1

Last sold for £525,000 in March 2018. Semi-detached house, freehold.

2 March 2018£525,000

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

Building

Floor area131 m² (1,410 sq ft)
Energy ratingD (58 out of 100), could reach C
PropertySemi-detached house, 8 habitable rooms
Built1930 to 1949
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in January 2017, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate

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Important details

Council
Chelmsford
Postcode
CM1 4EX
Received
22 Sept 2026
Validated
22 Sept 2026
Target decision
20 Oct 2026

Public comments

No public comments yet.

Last counted 8 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15239993
Planning Portal ref
PP-15239993

Historical activity at this location

27 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2017 Approved
Conversion of the garage into a habitable room.
17/00706/CLEUD
2017 Approved
Conversion of the garage into a habitable room.
17/00706/CLEUD
Within ~100m

Nearby activity

2025 Approved
17 Third Avenue Chelmsford Essex CM1 4EX
Erection of a two storey side extension, partial conversion of garage, loft conversion wi…
25/01497/FUL
2025 Approved
40 Third Avenue Chelmsford Essex CM1 4EY
Single storey front/side extension with pitched lean-to roof
25/00265/FUL
2023 Approved
54 Fourth Avenue Chelmsford Essex CM1 4HA
Demolition of existing garage and conservatory and construction of side extension with ne…
23/01241/FUL
2023 Approved
20 Fourth Avenue Chelmsford Essex CM1 4HA
Part garage conversion.
23/00236/CLOPUD
2023 Approved
20 Fourth Avenue Chelmsford Essex CM1 4HA
Part garage conversion.
23/00236/CLOPUD
2021
32 Fourth Avenue Chelmsford Essex CM1 4HA
Two storey side and rear extension. Demolition of existing external garage to rear. Alter…
21/00402/FUL
2020 Approved
36 Fourth Avenue Chelmsford Essex CM1 4HA
Two storey side extension and single storey rear extension.
20/00550/FUL
2020 Approved
36 Fourth Avenue Chelmsford Essex CM1 4HA
Two storey side extension and single storey rear extension.
20/00550/FUL
2020 Approved
24 Third Avenue Chelmsford Essex CM1 4EY
Part two storey, part single storey rear extension.
20/00112/FUL
2020 Approved
24 Third Avenue Chelmsford Essex CM1 4EY
Part two storey, part single storey rear extension.
20/00112/FUL
2019 Approved
33 Third Avenue Chelmsford Essex CM1 4EX
First floor front extension with additional roof alterations.
19/01701/FUL
2019 Approved
33 Third Avenue Chelmsford Essex CM1 4EX
First floor front extension with additional roof alterations.
19/01701/FUL
2019 Approved
52 Third Avenue Chelmsford Essex CM1 4EY
Garage conversion and raising of roof
19/01613/FUL
2019 Approved
52 Third Avenue Chelmsford Essex CM1 4EY
Garage conversion and raising of roof
19/01613/FUL
2019 Approved
55 Third Avenue Chelmsford Essex CM1 4EX
Conversion of garage to habitable room, replacing garage door with window, fitting of win…
19/01301/FUL
2019 Approved
55 Third Avenue Chelmsford Essex CM1 4EX
Conversion of garage to habitable room, replacing garage door with window, fitting of win…
19/01301/FUL
2018 Approved
46 Fourth Avenue Chelmsford Essex CM1 4HA
Proposed enlarged roof dormer and rear extension.
18/01247/FUL
2018 Approved
30 Fourth Avenue Chelmsford Essex CM1 4HA
Single storey rear extension.
18/01170/FUL
2018 Approved
48 Fourth Avenue Chelmsford CM1 4HA
Proposed single storey rear extension and loft conversion with rear dormer.
18/01073/CLOPUD
2018 Approved
28 - 30 Third Avenue Chelmsford Essex CM1 4EY
Two storey side and rear extension, to create 4no. apartments.
18/00049/FUL
2016 Approved
58 Third Avenue Chelmsford Essex CM1 4EY
Demolition of existing side building and proposed single storey side and front extension…
16/00890/FUL
2016 Approved
61 Third Avenue Chelmsford Essex CM1 4EX
Proposed single storey front, two storey side and rear and ground floor rear extensions…
16/00710/FUL
2016 Approved
58 Third Avenue Chelmsford Essex CM1 4EY
Demolition of existing side building and proposed single storey side extension.
16/00415/FUL
2016 Approved
19 Third Avenue Chelmsford Essex CM1 4EX
Single storey front, two storey side and single storey rear extensions.
16/00327/FUL
2016 Approved
24 Fourth Avenue Chelmsford Essex CM1 4HA
Part first floor, part two storey side extension. Single storey rear extension. Porch can…
16/00104/FUL
Chelmsford
Planning Authority Score
7.4/10
Good
#45 of 296 councils
Relevant to this application:
Householder decisions

Chelmsford is one of the fastest councils in England for householder decisions, ranking #23 out of 296. Only 21% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Householder applications are slightly more likely to be approved here (90%) than the national average (90%).

Among the fastest councils in England
for householder decisions
These figures are council-wide context, not a prediction for this application. View full council performance
Chelmsford decision statistics
Based on MHCLG data, the year to March 2026
87%
Overall approval rate
Above avg (87%) #167 of 296
90%
Householder approved
Above avg (90%) #188 of 296
84%
Decided in 8 weeks
Above avg (63%) #23 of 296
21%
Extended time limit
Below avg (41%) #19 of 296
76%
Minor dwellings approved
164 decided (1-9 homes)
88%
Major dwellings approved
8 decided (10+ homes)
79%
Change of use approved
52 decided
1,304
Total decisions
168 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

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.