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Open data · updated 8 August 2026

The South Coast Property Report

What the public registers say about the South Coast’s housing stock — energy performance, flood exposure and planning designations for Southampton, Portsmouth and Bournemouth. Every figure below states exactly what was counted and how. Sampled figures are indicative: they describe locations, never an individual property.

Southampton

Southampton City Council

Energy performance

Of 69,627 domestic energy certificates counted, 49.4% are rated band D or worse.

A 116B 6,466C 28,616D 23,832E 7,646F 2,350G 601

What was counted: all 69,627 domestic certificates lodged for Southampton City Council between 2016-08-07 and 2026-08-07; 69,627 carried a band A–G and only those are counted in band shares

Flood-risk exposure (indicative)

Of 90 randomly sampled residential postcode locations, 8 (8.9%) sit inside a mapped rivers-and-sea flood-risk area, 6 of them in a High or Medium band.

SO14: worst sampled band HighSO15: no sampled point in a mapped risk areaSO16: no sampled point in a mapped risk areaSO17: worst sampled band LowSO18: worst sampled band HighSO19: no sampled point in a mapped risk area

What was counted: 90 randomly sampled addresses' postcode locations across 6 districts (SO14, SO15, SO16, SO17, SO18, SO19); 0 lookups failed and are excluded — indicative, area-based: this describes locations, not any individual property

Planning designations (indicative)

SO14: Article 4 directionSO15: Article 4 directionSO16: Article 4 directionSO17: Conservation area, Article 4 directionSO18: Article 4 directionSO19: Article 4 direction

What was counted: 6 postcode-district centroids — indicative by location; designations are area facts, never a property-level determination

Portsmouth

Portsmouth City Council

Energy performance

Of 60,580 domestic energy certificates counted, 47.3% are rated band D or worse.

A 114B 3,443C 28,365D 22,771E 4,639F 888G 360

What was counted: all 60,580 domestic certificates lodged for Portsmouth City Council between 2016-08-07 and 2026-08-07; 60,580 carried a band A–G and only those are counted in band shares

Flood-risk exposure (indicative)

Of 90 randomly sampled residential postcode locations, 12 (13.3%) sit inside a mapped rivers-and-sea flood-risk area, 10 of them in a High or Medium band.

PO1: no sampled point in a mapped risk areaPO2: no sampled point in a mapped risk areaPO3: worst sampled band HighPO4: worst sampled band MediumPO5: worst sampled band HighPO6: no sampled point in a mapped risk area

What was counted: 90 randomly sampled addresses' postcode locations across 6 districts (PO1, PO2, PO3, PO4, PO5, PO6); 0 lookups failed and are excluded — indicative, area-based: this describes locations, not any individual property

Planning designations (indicative)

PO1: none at the sampled pointPO2: none at the sampled pointPO3: none at the sampled pointPO4: none at the sampled pointPO5: Conservation areaPO6: none at the sampled point

What was counted: 6 postcode-district centroids — indicative by location; designations are area facts, never a property-level determination

Bournemouth

Bournemouth, Christchurch and Poole Council

Energy performance

Of 110,043 domestic energy certificates counted, 46.8% are rated band D or worse.

A 678B 11,976C 45,896D 38,399E 10,969F 1,661G 464

What was counted: all 110,043 domestic certificates lodged for Bournemouth, Christchurch and Poole Council between 2016-08-07 and 2026-08-07; 110,043 carried a band A–G and only those are counted in band shares

Flood-risk exposure (indicative)

Of 135 randomly sampled residential postcode locations, 0 (0.0%) sit inside a mapped rivers-and-sea flood-risk area, 0 of them in a High or Medium band.

BH1: no sampled point in a mapped risk areaBH2: no sampled point in a mapped risk areaBH3: no sampled point in a mapped risk areaBH4: no sampled point in a mapped risk areaBH5: no sampled point in a mapped risk areaBH6: no sampled point in a mapped risk areaBH7: no sampled point in a mapped risk areaBH8: no sampled point in a mapped risk areaBH9: no sampled point in a mapped risk area

What was counted: 135 randomly sampled addresses' postcode locations across 9 districts (BH1, BH2, BH3, BH4, BH5, BH6, BH7, BH8, BH9); 0 lookups failed and are excluded — indicative, area-based: this describes locations, not any individual property

Planning designations (indicative)

BH1: Conservation areaBH2: none at the sampled pointBH3: Conservation areaBH4: none at the sampled pointBH5: none at the sampled pointBH6: none at the sampled pointBH7: none at the sampled pointBH8: none at the sampled pointBH9: none at the sampled point

What was counted: 9 postcode-district centroids — indicative by location; designations are area facts, never a property-level determination

Sources & licence. Energy data: Energy Performance of Buildings Register © Crown copyright (OGL). Flood data: Contains Environment Agency information © Environment Agency and/or database right (OGL). Planning designations: contains data from planning.data.gov.uk © Crown copyright and database right (OGL v3). Geocoding: ONS/OS open data via postcodes.io (OGL). Figures are reproducible from the stated methods; the underlying queries send only public reference identifiers (local-authority codes, postcode districts, coordinates). Press enquiries: hello@tradelynx.co.uk.