25 Porson Road Cambridge Cambridgeshire CB2 8ET Data via plota.co.uk

26/01153/HFUL - Householder Works/Extension Approved

Proposal

Application of external render throughout, installation of solar panels to the front roof slope, alteration to bay window roof, replacement windows and doors, and removal of chimney Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
24 Mar 2026
✓
Consultation
22 Apr 2026
✓
Approved
18 May 2026

Approved on 18 May 2026 · Delegated Decision · Last checked 9 Jul 2026

Site constraints 4

Also on the record
Nature recovery project: Cambridge Core Area; Conservation area about 53 m away: Barrow Road; National infrastructure project about 477 m away: East West Rail - Bedford to Cambridge and Western improvements, at pre-application; Inside the Cambridge (Cambridge) 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 2

Last sold for £1,770,000 in November 2025. Detached house, freehold.

7 November 2025£1,770,000
4 July 1996£195,000

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

Building

Floor area171 m² (1,841 sq ft)
Energy ratingD (64 out of 100), could reach C
PropertyDetached house, 9 habitable rooms
Built1967 to 1975
HeatingBoiler and radiators, mains gas
WallsCavity wall, filled cavity

From the energy performance certificate lodged in October 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
Cambridge
Application type
Householder Works/Extension
Postcode
CB2 8ET
Received
24 Mar 2026
Validated
24 Mar 2026
Ward
Trumpington
Case officer
Show
Target decision
19 May 2026
Decision
Granted Permission
Decision date
18 May 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Marrons

How this decision compares

Decided in 55 days from validation, about the council's usual 54 days. Approved, as 96% of extensions here are.

82%decided within 8 weeks
96%approved
511decided in the last year

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

Consultation & key dates

Site or press notice
22 Apr 2026
Statutory expiry
19 May 2026
Env. assessment
No
Cambridge
Planning Authority Score
8.3/10
Excellent
#18 of 296 councils
Relevant to this application:
Householder decisions

Cambridge is one of the fastest councils in England for householder decisions, ranking #21 out of 296. Only 26% 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 (94%) 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
Cambridge decision statistics
Based on MHCLG data, the year to March 2026
90%
Overall approval rate
Above avg (87%) #108 of 296
94%
Householder approved
Above avg (90%) #100 of 296
86%
Decided in 8 weeks
Above avg (63%) #21 of 296
26%
Extended time limit
Below avg (41%) #34 of 296
74%
Minor dwellings approved
86 decided (1-9 homes)
80%
Major dwellings approved
5 decided (10+ homes)
80%
Change of use approved
41 decided
1,014
Total decisions
100 refused in the year to March 2026

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.