12 Carmarthen Street, Gloucester, GL1 4SX
About 12 Carmarthen Street
12 Carmarthen Street is a three-bedroom semi-detached house in Gloucester (GL1 4SX). It has a recorded floor area of 80 m² (around 861 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (September 2017) shows a D (score 60), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since October 2014. Between certificates, wall efficiency went from Very Poor to Poor and roof efficiency went from Poor to Average; while lighting dropped from Very Good to Good. The recommended improvements would lift it to B (score 84), a 2-band jump.
Today's modelled estimate of £194,000 sits 55.2% above the 2018 sale of £125,000. On a £-per-square-foot basis, the last sale (£145/sq ft) was about 31.9% above the typical sold price in the postcode. Last sold in February 2018, so it's been off the market for around 8 years.
What this property has
Inside
- Bedrooms3
- Bathrooms1
- Dining roomYes
Outside
- Private gardenRear
Building
- Heating systemGas
Everything you need to know about 12 Carmarthen Street
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Wall insulation improved
Roof insulation improved
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
12 Carmarthen Street has no planning applications on record.
But the area is active
4 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
12 Carmarthen Street valuation sits well clear of the typical sold price in this postcode.
£194,000
Modelled from EPC, postcode comparables.
£125,000
Recorded with HM Land Registry.
Sales timeline
23 February 2018Most recent
£125,000
Median price across the last 5 sales in GL1 4SX: £133,000 (2024–2019).
Nearby sales in GL1 4SX
31 Carmarthen Street, Gloucester, GL1 4SX
Sold Nov 2024
£120,00027 Carmarthen Street, Gloucester, GL1 4SX
Sold Jun 2023
£162,00017 Carmarthen Street, Gloucester, GL1 4SX
Sold Feb 2022
£133,00024 Carmarthen Street, Gloucester, GL1 4SX
Sold Sept 2020
£136,00015 Carmarthen Street, Gloucester, GL1 4SX
Sold Jan 2019
£86,800
Versus other Carmarthen Street homes
Price per m²
£1,563
Street avg £1,283
Floor Area
80 m²
Street avg 78 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
3.9 t/year
Street avg 3.9 t/year
Everything you need to know about 12 Carmarthen Street
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

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The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
12/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Melbourne St West — bus stop.
Closest school
0.2 km
Tredworth Infant and Nursery Academy. 29 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
49.9dB

Night-time· 23:00 – 07:00
39.7dB






