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12 Gwynne Terrace, St Thomas, Swansea, SA1 8HP

Estimated value

£153,000

  • Since the 2025 sale (£146,000)+5%
  • Against SA1 8HP's recent median (£33,000)+364%

Newest record on this page: September 2025. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.

Learn about this valuation
Property type
Mid terrace
Habitable rooms
3
From EPC
Floor area
68 m²
732 sq ft
Energy rating
C
Score 69
Council tax
Band A
Tenure
Owner Occupied
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Valuation

About this valuation

How the figure is worked out and what it's based on. If you know this home, you can tell other visitors what you think it's worth.

Our estimate

£153,000

  • Against its 2025 sale (£146,000)+5%
  • Against SA1 8HP's recent median (£33,000)+364%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 12 Gwynne Terrace is modelled from its 68 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in SA1 8HP. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.

What it's based on

  • Floor area

    68 m² from the EPC lodged in March 2025

  • Sales of this home

    2 sales recorded, the latest in 2025

  • Recent sales in SA1 8HP

    5 sales, median £33,000 (2023–1997)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: September 2025Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
PlanningNone on this homeFull history, plus nearby schemes
Flood riskNot shownIncluded
Price

Sales history & valuation

Every recorded sale of this home, how its price has moved, and what neighbouring properties have sold for.

12 Gwynne Terrace valuation sits well clear of the typical sold price in this postcode.

Sales timeline

  1. 24 September 2025Most recent

    £146,000

    +39.0%over 18 years

  2. 9 August 2007

    £105,000

Median price across the last 5 sales in SA1 8HP: £33,000 (2023–1997).

Risks

What this page doesn't show

2 potential issues have already been flagged for 12 Gwynne Terrace, St Thomas, Swansea, SA1 8HP. The detail, evidence and what to ask about it are in the Risks Report.
  • Signs of HMO activity in the areaIn report
  • Larger development activity nearbyIn report
  • Flood risk from rivers, sea and surface waterIn report
  • Subsidence and ground-stability signalsIn report
  • Refusals, enforcement and big schemes nearbyIn report

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Overview

About 12 Gwynne Terrace

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

12 Gwynne Terrace is a mid-terrace house in St. Thomas, Swansea, Swansea (SA1 8HP). It has a recorded floor area of 68 m² (around 732 sq ft), construction records dating it to 1930-1949 and council tax band A. The latest certificate (March 2025) shows a C (score 69), just inside the C band. The recommended improvements would push it to B (score 87).

Most recent transfer was September 2025 at £146,000 — fresh data. Across 2007–2025, sale prices on this property compounded at 1.8% per year. On a £-per-square-foot basis, the last sale (£199/sq ft) was about 64.2% above the typical sold price in the postcode.

Before you decide

Everything you need to know about 12 Gwynne Terrace

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

Signs of HMO activity in the areaLarger development activity nearby

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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
Mar 2025

EPC Rating

A
B
C
C69
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
2.4 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 14 March 2035

8 years remaining
Planning

Planning history

Applications and permits filed against 12 Gwynne Terrace, St Thomas, Swansea, SA1 8HP, sourced from the PlanIt planning register.

12 Gwynne Terrace has no planning applications on record.

47

But the area is active

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

On the street

Versus other Gwynne Terrace homes

Four headline reads against 8 similar houses on this street, drawn from the latest EPC and Land Registry data.

On price per m², 12 Gwynne Terrace stands well clear of the street.

Price per m²

£2,147

Street avg £1,202

Strongly above

Floor Area

68 m²

Street avg 66 m²

Strongly above

Habitable Rooms

3 rooms

Street avg 4 rooms

Strongly below

CO₂ Emissions

2.4 t/year

Street avg 2.4 t/year

On par
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

580/mo

Steady year-on-year across the wider district.

Nearest stop

0.1 km

Jersey Park — bus stop.

Nearest stops

  • Jersey ParkBus stop73m
  • Jersey ParkBus stop131m
  • Jersey ParkBus stop158m
  • Wallace RoadBus stop241m

Most reported crime locally

  • Violence & Sexual Offences3,276 reports35%
  • Anti-social Behaviour1,210 reports13%
  • Shoplifting1,135 reports12%
  • Public Order981 reports11%

Go deeper on the local area

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

SDL Surveying

Get a survey for this property

Level 2 HomeBuyer Report

Early 20th centuryMid-Terrace 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 £495 · Includes VAT

Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£153k

1 Llys Hafan, Lamberts Road

SA1 8QH

£152k

1 Bay View, St Thomas

SA1 8BB

£152k

1 Beaumont Crescent, St Thomas

SA1 8DW

£159k

1 Elba Crescent, Crymlyn Burrows

SA1 8QQ

£147k

1 Balaclava Street, St Thomas

SA1 8BS

4 bed1 bath
£136k

1 Bay Street, Port Tennant

SA1 8LB

£173k

1 Glenroy Avenue, St Thomas

SA1 8DU

£174k

1 Danygraig Road, Port Tennant

SA1 8LY

1 bed

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Method

How to read this page

Where every figure above comes from, how current it is and what it can't tell you.
Valuation method in detail
How the estimate is made
The estimate for 12 Gwynne Terrace is modelled from its 68 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in SA1 8HP. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.
Where sold prices come from
Sold prices are HM Land Registry Price Paid Data, which covers residential sales in England and Wales since 1995. 2 sales are recorded for 12 Gwynne Terrace. Sales normally appear two to three months after completion, so the most recent ones take time to show up anywhere.
Reading the EPC
Energy Performance Certificates rate homes from A (most efficient) to G and last 10 years. The latest one for 12 Gwynne Terrace was lodged in March 2025 at band C and is valid until March 2035. Floor area, heating and insulation details on this page come from it.
Planning records
Planning applications are collected from local authority registers through PlanIt. None is matched to 12 Gwynne Terrace. Councils sometimes file applications under a different address format, and applications on neighbouring land aren't listed here; the report covers both.
Area figures
Crime is police-recorded street-level data over the last 16 months, which places each incident at an approximate point. Schools and stops are measured in a straight line from SA1 8HP.
Council tax band
12 Gwynne Terrace is in council tax band A. Bands are set by the Valuation Office Agency from historic values (1 April 1991 in England, 1 April 2003 in Wales), not today's price; the amount you pay depends on the council's rate for the band.
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 12 Gwynne Terrace, St Thomas, Swansea, SA1 8HP. Each answer is also embedded as structured data for search engines.

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