What type of property is 31 Sebastopol Street, SA1 8BN?

31 Sebastopol Street, SA1 8BN is a mid-terrace house.

What did 31 Sebastopol Street, SA1 8BN sell for?

31 Sebastopol Street, SA1 8BN last sold for £122,000 in July 2021, around 5 years ago. Before that, it sold for £80,000 in December 2013, so prices have been rising over 8 years on record. Source: HM Land Registry.

How has the value of 31 Sebastopol Street, SA1 8BN changed over time?

Across 2 sales between December 2013 and July 2021, 31 Sebastopol Street, SA1 8BN rose from £80,000 to £122,000, a change of £42,000. That works out to roughly +5.7% per year compounded over 8 years. Source: HM Land Registry.

What is the EPC rating for 31 Sebastopol Street, SA1 8BN?

The current EPC rating for 31 Sebastopol Street, SA1 8BN is C with a score of 69 out of 100, lodged in September 2025. It has improved from a E recorded in January 2011 (2 bands). Source: EPC Register.

What is the floor area of 31 Sebastopol Street, SA1 8BN?

31 Sebastopol Street, SA1 8BN has a recorded floor area of 101 m² (1,087 sq ft). That makes it about 28% larger than the median EPC-recorded property in SA1 8BN. Source: EPC Register.

How is 31 Sebastopol Street, SA1 8BN heated?

The latest EPC at 31 Sebastopol Street, SA1 8BN records mains gas as the main heating fuel. Source: EPC Register.

What council tax band is 31 Sebastopol Street, SA1 8BN?

31 Sebastopol Street, SA1 8BN is in council tax band B. That sits at the lower end of the A-H ladder, typically reflecting smaller floor areas or lower 1991 valuations.

Where is 31 Sebastopol Street, SA1 8BN located?

31 Sebastopol Street, SA1 8BN sits in St. Thomas, Swansea, Swansea. It falls within the SA1 postcode district.

Is 31 Sebastopol Street, SA1 8BN in a safe area?

Police records around 31 Sebastopol Street, SA1 8BN show an average of 3 reported crimes per month over the last 11 months. Violent crime makes up roughly 35% of reports, the most common category. The overall trend is broadly stable. Source: Police UK.

How well connected is 31 Sebastopol Street, SA1 8BN?

The closest bus stop to 31 Sebastopol Street, SA1 8BN is St Thomas Church, 80m away. In total there are 30 bus stops within the surrounding area.

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31 Sebastopol Street, St Thomas, Swansea, SA1 8BN

1 planning record

Property type

Mid terrace

Habitable rooms

From EPC

Floor area

101 m²

1087 sq ft

Energy rating

Score 69

Council tax

Band B

Tenure

Private Rental

Overview

About 31 Sebastopol Street

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

31 Sebastopol Street is a mid-terrace house in St. Thomas, Swansea, Swansea (SA1 8BN). It has a recorded floor area of 101 m² (around 1087 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (September 2025) shows a C (score 69), just inside the C band. When first surveyed in January 2011 the rating was E, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Very Good and window efficiency went from Poor to Average.

At 101 m² it's 27% larger than the typical home in the postcode (80 m² median across 22 EPCs). On energy efficiency it sits in the top 10% of properties in this postcode. Across 2013–2021, sale prices on this property compounded at 5.7% per year. Today's modelled estimate of £150,000 is 23% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£112/sq ft) was about 24.2% above the typical sold price in the postcode. Sold July 2021 for £122,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. One historical planning record sits against the property in 2021.

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Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.

31 Sebastopol Street ranks among the most efficient homes in the postcode for energy use.

Current Certificate(1 of 3)

Sept 2025

EPC Rating

C69

Main Heating

Gas

Main Fuel

Gas

Hot Water

Good

Windows

Average

CO2 Emissions

2.8 t/year

Occupancy

Rented

Property Improvements

Changes detected from historical EPC data

Mar 2021from Jan 2011

EPC improved fromE40toD61

Heating Controls

Prog + StatFull

Heating controls upgraded for better temperature management

Windows

Mostly DoubleFull Double

Windows upgraded, improving insulation

Roof Insulation

UninsulatedInsulated

Roof insulation improved

Low Energy Lighting

80%100%

More low energy lighting installed

Sept 2025from Mar 2021

EPC improved fromD61toC69

Roof Insulation

InsulatedWell Insulated

Loft insulation upgraded to recommended levels

Get a survey for this property

Level 3 Building Survey

Victorian-eraMid-Terrace HouseEPC CPre-1919 buildExtended multiple times (2+ extensions)

Because the property was built before 1919 and has been extended more than once, we believe a Level 3 building survey should be considered.

From £820 · Includes VAT

Planning

Planning history

Applications and permits filed against 31 Sebastopol Street, St Thomas, Swansea, SA1 8BN, sourced from the PlanIt planning register.

1 application on record at 31 Sebastopol Street, St Thomas, Swansea, SA1 8BN

1decisions11documents53nearby

Flagged:HMO conversion

Aug 2021
HMOAmendment
Outcome in report
Continued use as a 4 bed HMO (application for a Certificate of Existing Lawful Use)
Documents
11 docs on file
Reference
2021/1841/ELD
Full record in report

Unlock 31 Sebastopol Street, St Thomas, Swansea, SA1 8BN's full planning history

You're seeing the shape of it. The report has the substance.

Every decision — granted, refused or withdrawn (1 on record)
All 1 application on this property in full, plus 53 notable nearby
The 11 documents, officer reports & conditions
What the pattern means for extending or converting here

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Price

Sales history & valuation

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

The latest sale landed in the post-pandemic price surge — useful context when reading the figure.

Current estimate

£150,000

Modelled from EPC, postcode comparables and a sale-price growth of 5.7% per year over 8 years.

See how we calculated this

Last sold (2021)

£122,000

Growth on file: 5.7% per year over 8 years.

Sales timeline

1 July 2021Most recent
£122,000
+52.5%over 7 years
9 December 2013
£80,000

Median price across the last 5 sales in SA1 8BN: £128,000 (2022–2018).

Nearby sales in SA1 8BN

On the street

Versus other Sebastopol Street homes

Four headline reads against 20 similar houses on this street, drawn from the latest EPC and Land Registry data.

31 Sebastopol Street outperforms the street on epc rating by a wide margin.

Price per m²

£1,208

Street avg £1,136

Above

Floor Area

101 m²

Street avg 88 m²

Strongly above

Habitable Rooms

6 rooms

Street avg 5 rooms

Strongly above

CO₂ Emissions

2.8 t/year

Street avg 4.4 t/year

Strongly above

Before you decide

Everything you need to know about 31 Sebastopol Street

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

Signs of HMO activity in the areaLarger development activity nearby

Pick your report · every report is £14.99

One time fee only - money back guarantee

The data behind every report

Comparables

Similar properties nearby

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

£148k

1 Balaclava Street, St Thomas

SA1 8BS

4 bed1 bath

£154k

1 Beaumont Crescent, St Thomas

SA1 8DW

£143k

1 Bay Street, Port Tennant

SA1 8LB

£139k

1 George Powell House, Balaclava Street, St Thomas

SA1 8BR

£164k

1 Llys Hafan, Lamberts Road

SA1 8QH

£169k

1 Danygraig Road, Port Tennant

SA1 8LY

1 bed

£131k

1 Grenfell Park Road, St Thomas

SA1 8EY

£172k

1 Bay View, St Thomas

SA1 8BB

Area

The neighbourhood at a glance

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

Full Swansea report

Crime

3/mo

Steady year-on-year across the wider district.

Nearest stop

0.1 km

St Thomas Church — bus stop.

Go deeper on the local area

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

FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 31 Sebastopol Street, St Thomas, Swansea, SA1 8BN. Each answer is also embedded as structured data for search engines.