138 Cottimore Lane Walton-On-Thames Surrey KT12 2BN Data via plota.co.uk

2026/2243 - Householder Application Registered
Extensions & alterations

Proposal

Single storey rear extension following demolition of existing rear conservatory. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
15 Sept 2026
✓
Validated
28 Sept 2026
Decision
Expected by 23 Nov 2026

Under consideration

No decision has been issued yet. Plota predicts a decision around 23 Nov 2026, from Elmbridge's recent extensions.

Documents

View the documents on the council's website ↗

Site constraints 2

Flood zone 3, rivers and sea
High chance: a 1 in 100 or greater annual chance from rivers, or 1 in 200 from the sea. Any development here needs a flood risk assessment. Defences are not counted.
The Environment Agency flood map for planning. Homes in zone 3 must also pass the sequential test. Surface water flooding is a separate map.
Flood map ↗
Also on the record
Inside the Walton-on-Thames built-up area.
Not affected
Not green belt · No scheduled monument 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.

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Other new applications on this street

25 Jun 2026Approved

26A Cottimore Lane Walton-On-Thames Surrey KT12 2BS

Conversion of garage into habitable space, changes to fenestration and single st...

2026/1574

Nearby new applications

16 Sept 2026Pending

9 Fairfax Close Walton-On-Thames Surrey KT12 2AJ

Single-storey rear/side extension following demolition of existing detached gara...

2026/2250
16 Sept 2026Pending

9 Fairfax Close Walton-On-Thames Surrey KT12 2AJ

Hip-to-gable roof extension with rear dormer to provide rooms in the roofspace i...

2026/2249
4 Aug 2026Pending

2 Willowhayne Drive Walton-On-Thames Surrey KT12 2NR

Single storey rear extension and alterations to fenestration.

2026/1897
24 Jul 2026Approved

51 Sidney Road Walton-On-Thames Surrey KT12 2LZ

Variation of Condition: 2 (Approved plans) and 3 (Materials) of planning permiss...

2026/1809
28 Jul 2026Approved

5A Sassoons Cottages Cottimore Crescent Walton-On-Thames Surrey KT12 2DA

Single-storey rear infill extension below existing structure and alterations to ...

2026/1833
9 Jul 2026Refused

13 The Chestnuts Walton-On-Thames Surrey KT12 1EE

Two storey side extension including side and rear rooflights and alterations to ...

2026/1683

Important details

Council
Elmbridge
Application type
Householder Application
Postcode
KT12 2BN
Received
15 Sept 2026
Validated
28 Sept 2026
Ward
Walton Central WardWalton North Ward

Decision outlook

Day 11 of the 56-day target. Elmbridge usually decides extensions by day 56.

Day 1145 days to the 56-day target
59%decided within 8 weeks
79%approved
944decided in the last year

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

Historical activity at this location

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

Within ~100m

Nearby activity

2025 Approved
42 Cottimore Crescent Walton-On-Thames Surrey KT12 2DD
Single-storey rear extension, side dormer windows and changes to fenestration.
2025/0205
2025 Approved
42 Cottimore Crescent Walton-On-Thames Surrey KT12 2DD
Single-storey rear extension, side dormer windows and changes to fenestration.
2025/0205
2024 Approved
166 Cottimore Lane Walton-On-Thames Surrey KT12 2BL
Vehicular access.
2024/1311
2022 Approved
127 Cottimore Lane Walton-on-Thames Surrey KT12 2BN
Part two/part single-storey rear/side extension, hip-to-gable roof extension incorporatin…
2022/1715
2022 Approved
127 Cottimore Lane Walton-on-Thames Surrey KT12 2BN
Part two/part single-storey rear/side extension, hip-to-gable roof extension incorporatin…
2022/1715
2022 Approved
162 Cottimore Lane Walton-on-Thames Surrey KT12 2BL
Hip-to-gable roof extension, rear dormer window and front rooflights.
2022/1391
2022 Approved
162 Cottimore Lane Walton-on-Thames Surrey KT12 2BL
Hip-to-gable roof extension, rear dormer window and front rooflights.
2022/1391
2022 Approved
4 Fairfax Close Walton-On-Thames Surrey KT12 2AJ
Hip-to-gable roof extension and front rooflights.
2022/0674
2022 Approved
4 Fairfax Close Walton-On-Thames Surrey KT12 2AJ
Hip-to-gable roof extension and front rooflights.
2022/0674
2022 Refused
22 Cottimore Crescent Walton-On-Thames Surrey KT12 2DD
Hip-to-gable roof extension, rear dormer window incorporating rear juliet balcony and fro…
2022/0358
2022 Approved
22 Cottimore Crescent Walton-on-Thames Surrey KT12 2DD
Single-storey rear/side extension following demolition of existing rear conservatory and…
2022/0762
2022 Refused
22 Cottimore Crescent Walton-On-Thames Surrey KT12 2DD
Hip-to-gable roof extension, rear dormer window incorporating rear juliet balcony and fro…
2022/0358
2022 Approved
22 Cottimore Crescent Walton-on-Thames Surrey KT12 2DD
Single-storey rear/side extension following demolition of existing rear conservatory and…
2022/0762
2022 Refused
127 Cottimore Lane Walton-On-Thames Surrey KT12 2BN
Part two/part single-storey side/rear extension, single-storey front extension, hip-to-ga…
2022/0327
2022 Refused
127 Cottimore Lane Walton-On-Thames Surrey KT12 2BN
Part two/part single-storey side/rear extension, single-storey front extension, hip-to-ga…
2022/0327
2021 Refused
22 Cottimore Crescent Walton-On-Thames Surrey KT12 2DD
Single-storey rear/side extension following demolition of existing rear conservatory and…
2021/3956
2021 Refused
22 Cottimore Crescent Walton-On-Thames Surrey KT12 2DD
Single-storey rear extension linking garage to house, part conversion of garage into livi…
2021/2308
2021 Approved
10 Monks Crescent Walton-On-Thames Surrey KT12 2AH
Single-storey rear/side extension following demolition of existing garage.
2021/1807
2020 Approved
13 Fairfax Close Walton-On-Thames Surrey KT12 2AJ
Retrospective application to alter roof tiles of existing roof to Rivendale black slate.
2020/2958
2020 Approved
13 Fairfax Close Walton-On-Thames Surrey KT12 2AJ
Retrospective application to alter roof tiles of existing roof to Rivendale black slate.
2020/2958
2016 Refused
160 Cottimore Lane Walton-On-Thames Surrey KT12 2BL
Single storey rear extension, hip to gable roof extension incorporating rear dormer window
2016/1785
2016 Approved
148 Cottimore Lane Walton-On-Thames Surrey KT12 2BL
Single storey side/front extension incorporating a porch, replace existing flat roof to s…
2016/1010
2016 Refused
115 Cottimore Lane Walton-On-Thames Surrey KT12 2BN
PD Prior Notification: Single storey rear extension
2016/1627
2016 Approved
125 Cottimore Lane Walton-On-Thames Surrey KT12 2BN
Lawful Development Certificate: Whether planning permission is required for proposed sing…
2016/1298
2016 Refused
125 Cottimore Lane Walton-On-Thames Surrey KT12 2BN
Single storey rear extension and partial conversion of garage into habitable accommodation
2016/0269
Elmbridge
Planning Authority Score
2.6/10
Poor
#247 of 296 councils
Relevant to this application:
Householder decisions

Elmbridge ranks #195 out of 296 councils for householder decision speed. Elmbridge is also one of the strictest councils - it refuses more householder applications than almost any other, with only 79% approved vs 90% nationally.

One of the strictest councils
only 79% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Elmbridge decision statistics
Based on MHCLG data, the year to March 2026
77%
Overall approval rate
Below avg (87%) #277 of 296
79%
Householder approved
Below avg (90%) #281 of 296
57%
Decided in 8 weeks
Below avg (63%) #195 of 296
44%
Extended time limit
Above avg (41%) #178 of 296
68%
Minor dwellings approved
195 decided (1-9 homes)
60%
Major dwellings approved
15 decided (10+ homes)
72%
Change of use approved
32 decided
1,358
Total decisions
314 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings