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12 Blackthorn Terrace, Cumberland Street, Portsmouth, PO1 3JW

Property type
Semi-detached
Habitable rooms
6
From EPC
Floor area
108 m²
1163 sq ft
Energy rating
C
Score 69
Council tax
Band B
Tenure
Social Rental
Overview

About 12 Blackthorn Terrace

A plain-English summary derived from public records, EPC certificates, sold prices and local data.

12 Blackthorn Terrace is a semi-detached house in Portsmouth (PO1 3JW). It has a recorded floor area of 108 m² (around 1163 sq ft), construction records dating it to 1983-1990 and council tax band B. The latest certificate (October 2025) shows a C (score 69), just inside the C band. The rating has held steady at C across 2 certificates since June 2010. Between certificates, window efficiency dropped from Good to Poor and lighting dropped from Very Good to Average.

Before you decide

Everything you need to know about 12 Blackthorn Terrace

The true value, the hidden risks and the full sale history, in one report.

Pick your report · every report is £14.99

One time fee only - money back guarantee

Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
Current Certificate(1 of 2)
Oct 2025

EPC Rating

A
B
C
C69
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Poor
CO2 Emissions
3.0 t/year
Occupancy
Rented

Property Improvements

Changes detected from historical EPC data

Oct 2025from Jun 2010
Roof Insulation
PartialWell Insulated

Loft insulation upgraded to recommended levels

Low Energy Lighting
80%100%

More low energy lighting installed

SDL Surveying

Get a survey for this property

Level 2 HomeBuyer Report

Late 20th centurySemi-Detached HouseEPC C

We've checked 10 risk factors against the available data for this property and believe a Level 2 HomeBuyer Report could be a suitable option for you.

From £545 · Includes VAT

Planning

Planning history

Applications and permits filed against 12 Blackthorn Terrace, Cumberland Street, Portsmouth, PO1 3JW, sourced from the PlanIt planning register.

12 Blackthorn Terrace has no planning applications on record.

3

But the area is active

3 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.

Price

Sales history & valuation

Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.

12 Blackthorn Terrace has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.

Current estimate

£286,000

Modelled from EPC, postcode comparables.

See how we calculated this

No sales recorded with HM Land Registry

That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.

Median price across the last 5 sales in PO1 3JW: £180,000 (2021–2004).

On the street

Versus other Cumberland Street homes

Four headline reads against 10 similar houses on this street, drawn from the latest EPC and Land Registry data.

On epc rating, 12 Blackthorn Terrace runs well behind the street norm.

EPC Rating

69 (C)

Street avg 74 (C)

Strongly below

Floor Area

108 m²

Street avg 101 m²

Strongly above

CO₂ Emissions

3.0 t/year

Street avg 2.5 t/year

Below

Habitable Rooms

6 rooms

Street avg 5 rooms

Strongly above
Before you decide

Everything you need to know about 12 Blackthorn Terrace

The true value, the hidden risks and the full sale history, in one report.

Pick your report · every report is £14.99

One time fee only - money back guarantee

Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£282k

1 Eva Allaway Court, St Georges Square

PO1 3AU

£301k

1 Curzon Howe Road

PO1 3BZ

£303k

1 Ensign Mews, Cross Street

PO1 3FZ

£307k

1 Arethusa House, Gunwharf Quays

PO1 3TQ

£310k

1 Dean Street

PO1 3BH

4 bed3 bath
£263k

1 Britain Street

PO1 3RG

£336k

1 Centurion Court, The Canalside, Gunwharf Quays

PO1 3BQ

2 bed2 bath
£341k

1 Blackthorn Terrace, Cumberland Street

PO1 3JW

4 bed2 bath
Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the Portsmouth district page.
Full Portsmouth report

Rail-style transport is unusually close for this postcode.

Crime

9/mo

Steady year-on-year across the wider district.

Nearest stop

0.2 km

Curzon Howe Road — bus stop.

Closest school

0.3 km

St George's Beneficial Church of England (Voluntary Controlled) Primary School. 34 schools nearby.

Go deeper on the local area

A Local Area report breaks down crime, transport links, schools and air quality in depth.

Noise

Road noise across the postcode

Modelled day and night-time noise levels around PO1 3JW from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for PO1 3JW

Daytime· 07:00 – 23:00

47.9dB

Low
Night-time road noise heatmap for PO1 3JW

Night-time· 23:00 – 07:00

40.4dB

Low
55 dB
60 dB
65 dB
70 dB
75 dB
80 dB
Defra Road Noise Strategic Mapping, Round 4
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 12 Blackthorn Terrace, Cumberland Street, Portsmouth, PO1 3JW. Each answer is also embedded as structured data for search engines.