Portsmouth Grammar School Cambridge Road Portsmouth Data via plota.co.uk

26/00313/FUL - Full Application Approved

Proposal

Conversion of school (Class F1) to form 16no. residential dwellings (Class C3), including associated landscaping, refuse and cycle storage and demolition of existing ancillary rifle range/swimming pool buildings Data via plota.co.uk

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View original council record ↗Last checked 13 Oct 2026, 12:52

Street View

Application progress

✓

Received

16 Mar 2026

✓

Validated

25 Mar 2026

✓

Consultation

7 Apr 2026

✓

Approved

7 Oct 2026

Approved on 7 Oct 2026 · Fully Delegated Decision · Last checked 13 Oct 2026

Documents 13

Decision & officer reports 1

PDF DECISION NOTICE Decision · 7 Oct 2026 View ↗

Plans & drawings 10

Associated applications 2

FullApproved7 Oct 202626/00313/FULThis application
Conversion of school (Class F1) to form 16no. residential dwellings (Class C3), including associated landscaping, refuse…
Conditions 7, 8 awaiting decision
- ConditionsApplication to discharge conditions 7 (Water Calculations) and 8 (Phase 1 Survey)9 Oct 202626/01177/DOC

Site constraints 7

Grade II listed: Lower School, Portsmouth Grammar School

List entry 1386917 · 0 m away · 4 more listed buildings within 150 m (1 Grade I, 3 Grade II)

Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.

Show the other 4 with distances

102 mLandport GateGrade I
121 mPortsmouth Grammar School and Attached RailingsGrade II
132 m133 and 134, High StreetGrade II
144 mNumber 132 1/2 and Attached RailingsGrade II

Historic England ↗

Nutrient neutrality catchment: Solent: Includes Chichester and Langstone Harbours SPA/Ramsar, Solent and Southampton Water SPA/Ramsar, Solent Maritime SAC, Portsmouth Harbour SPA/Ramsar

New homes and overnight accommodation must show nutrient neutrality before approval.

Natural England advice: extra wastewater in these catchments harms protected habitats, so schemes must offset their nutrient load, usually through credits.

Old Portsmouth conservation area

Demolition needs planning permission and permitted development is restricted.

The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.

In flood zones plus climate change

Inside the extent flood zones 2 and 3 could reach with climate change: the Central allowance for the 2080s on rivers, the Upper End allowance for sea level rise to 2125. From the sea. Defences are not counted.

The Environment Agency flood map for planning. Councils use it to decide when a flood risk assessment and the sequential test are needed. It is indicative and does not show whether a particular property will flood.

Flood map ↗

Air quality management area: Portsmouth AQMA No.7

The council has declared the area as failing an air quality objective.

Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.

Council record ↗

Also on the record

Special protection area 400 m away: Solent and Dorset Coast; Inside the Portsmouth 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. 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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Important details

Council: Portsmouth
Application type: Full Application
Received: 16 Mar 2026
Validated: 25 Mar 2026
Ward: St Thomas
Case officer: Show
Target decision: 9 Oct 2026
Decision: Conditional Permission
Decision date: 7 Oct 2026
Decision level: Fully Delegated Decision
Applicant: Show
Agent: Town Planning Expert

How this decision compares

Decided in 196 days from validation, 130 days slower than Portsmouth's median of 66 for changes of use. Approved, as 56% of changes of use here are.

This one196d

Council66d

UK56d

44%decided within 8 weeks

56%approved

21%go to committee

Plota live figures for changes of use decided by Portsmouth in the last twelve months, from validation. Portsmouth decision record →

Public comments

No public comments yet.

14 neighbours consulted · Last counted 13 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference: PP-14745398
Planning Portal ref: PP-14745398
Neighbours: 7 Apr 2026
Consultation: 7 Apr 2026
Comments by: 5 May 2026
Site or press notice: 10 Apr 2026
Statutory expiry: 24 Jun 2026
Env. assessment: No

Portsmouth

Planning Authority Score

3.1/10

Poor

#232 of 296 councils

Relevant to this application:

Householder decisions

Portsmouth ranks #188 out of 296 councils for householder decision speed. 48% of applications have the time limit extended, above the 41% national average. Householder applications are slightly less likely to be approved here (89%) than the national average (90%).

These figures are council-wide context, not a prediction for this application. View full council performance

Portsmouth decision statistics

Based on MHCLG data, the year to March 2026

86%

Overall approval rate

Below avg (87%) #196 of 296

89%

Householder approved

Below avg (90%) #207 of 296

60%

Decided in 8 weeks

Below avg (63%) #188 of 296

48%

Extended time limit

Above avg (41%) #217 of 296

61%

Minor dwellings approved

44 decided (1-9 homes)

90%

Major dwellings approved

10 decided (10+ homes)

77%

Change of use approved

99 decided

613

Total decisions

85 refused in the year to March 2026