Skip to content
UK Property Looker

18 Carmarthen Street, Gloucester, GL1 4SX

3 sales on record

Estimated value

£188,000

  • Since the 2018 sale (£133,000)+41%
  • Against GL1 4SX's recent median (£136,000)+38%

Newest record on this page: January 2026. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.

Learn about this valuation
Property type
Semi-detached
Bedrooms
2
Floor area
81 m²
872 sq ft
Energy rating
E
Score 54
Council tax
Band A
Tenure
Owner Occupied
Get directions (opens in a new tab)
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

£188,000

  • Against its 2018 sale (£133,000)+41%
  • Against GL1 4SX's recent median (£136,000)+38%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 18 Carmarthen Street is modelled from its 81 m² EPC floor area, its 3 recorded sales and recent sales of comparable homes in GL1 4SX. 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

    81 m² from the EPC lodged in April 2018

  • Sales of this home

    3 sales recorded, the latest in 2018

  • Recent sales in GL1 4SX

    5 sales, median £136,000 (2026–2020)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: January 2026Latest 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.

18 Carmarthen Street has more than quadrupled in price since its earliest registered sale in 1995.

Sales timeline

  1. 14 June 2018Most recent

    £133,000

    +88.4%over 14 years

  2. 17 May 2004

    £70,600

    +292.2%over 8 years

  3. 22 December 1995

    £18,000

Median price across the last 5 sales in GL1 4SX: £136,000 (2026–2020).

Risks

What this page doesn't show

2 potential issues have already been flagged for 18 Carmarthen Street, Gloucester, GL1 4SX. The detail, evidence and what to ask about it are in the Risks Report.
  • Signs of HMO activity in the areaIn report
  • Environmental risk flaggedIn report
  • Flood risk from rivers, sea and surface waterIn report
  • Subsidence and ground-stability signalsIn report
  • Refusals, enforcement and big schemes nearbyIn report

One time fee only - money back guarantee

Overview

About 18 Carmarthen Street

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

18 Carmarthen Street is a two-bedroom semi-detached house in Gloucester (GL1 4SX). It has a recorded floor area of 81 m² (around 872 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (April 2018) shows an E (score 54), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since October 2009. Between certificates, window efficiency went from Average to Good and hot-water efficiency went from Good to Very Good; while lighting dropped from Very Good to Average. The recommended improvements would lift it to C (score 77), a 2-band jump.

Across 1995–2018, sale prices on this property compounded at 9.3% per year. Today's modelled estimate of £188,000 is 41.4% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£153/sq ft) was about 37% above the typical sold price in the postcode. On the market in June 2018 and unlisted since — roughly 8 years.

Specifications

What this property has

Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.

Inside

  • Bedrooms2
Before you decide

Everything you need to know about 18 Carmarthen Street

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

Signs of HMO activity in the areaEnvironmental risk flagged

Pick your report · from £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.

Recommended upgrades on file would lift this property by multiple EPC bands.

Current Certificate(1 of 2)
Apr 2018

EPC Rating

A
B
C
D
E
E54
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Very Good
Windows
Good
CO2 Emissions
4.3 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 30 April 2028

1 year remaining

Property Improvements

Changes detected from historical EPC data

Apr 2018from Oct 2009
Hot Water
GoodVery Good

Hot water efficiency improved

Windows
AverageGood

Window efficiency improved

Low Energy Lighting
100%44%

Low energy lighting percentage decreased

Ventilation
NaturalMVHR

MVHR (mechanical ventilation with heat recovery) installed

Planning

Planning history

Applications and permits filed against 18 Carmarthen Street, Gloucester, GL1 4SX, sourced from the PlanIt planning register.

18 Carmarthen Street has no planning applications on record.

4

But the area is active

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

On the street

Versus other Carmarthen Street homes

Four headline reads against 21 similar houses on this street, drawn from the latest EPC and Land Registry data.

18 Carmarthen Street outperforms the street on floor area by a wide margin.

Price per m²

£1,642

Street avg £1,316

Above

Floor Area

81 m²

Street avg 78 m²

Above

Habitable Rooms

4 rooms

Street avg 4 rooms

On par

CO₂ Emissions

4.3 t/year

Street avg 3.9 t/year

Below
Area

The neighbourhood at a glance

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

Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.

Crime

440/mo

Falling 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.

Nearest schools

  • Tredworth Infant and Nursery AcademyPrimary228m
  • Tredworth Junior SchoolPrimary284m
  • St James' Church of England Junior SchoolPrimary374m
  • Hatherley Infant SchoolPrimary420m

Nearest stops

  • Melbourne St WestBus stop107m
  • Victory HotelBus stop235m
  • Upton StreetBus stop240m
  • Junior SchoolBus stop315m

Most reported crime locally

  • Violence & Sexual Offences2,988 reports36%
  • Anti-social Behaviour1,640 reports20%
  • Public Order740 reports9%
  • Shoplifting719 reports9%

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 GL1 4SX from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for GL1 4SX

Daytime· 07:00 – 23:00

49.9dB

Low
Night-time road noise heatmap for GL1 4SX

Night-time· 23:00 – 07:00

39.7dB

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

Get a survey for this property

Level 3 Building Survey

Victorian-eraSemi-Detached HouseEPC EPre-1919 buildSolid (non-cavity) walls

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

Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£185k

1 Conduit Street

GL1 4XH

2 bed1 bath
£167k

1 Beckside Court, Millbrook Street

GL1 4BJ

2 bed1 bath
£213k

1 Diamond Jubilee Close

GL1 4LR

2 bed1 bath
£153k

1 Belgrove Terrace

GL1 4UZ

2 bed1 bath
£187k

1 Bishopstone Road

GL1 4BZ

3 bed1 bath
£176k

1 Clement Cottages, Clement Street

GL1 4JP

3 bed1 bath
£170k

1 Clement Street

GL1 4JW

3 bed
£184k

1 Dynevor Street

GL1 4ST

4 bed

Property research, connected

Get up to date data on unlimited properties per month

Explore sale histories, valuations, energy ratings and local areas. Ask the assistant to connect the details and take your research further.

Start your research
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 18 Carmarthen Street is modelled from its 81 m² EPC floor area, its 3 recorded sales and recent sales of comparable homes in GL1 4SX. 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. 3 sales are recorded for 18 Carmarthen Street. 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 18 Carmarthen Street was lodged in April 2018 at band E and is valid until April 2028. 2 certificates are on record, which shows how the home has changed.
Planning records
Planning applications are collected from local authority registers through PlanIt. None is matched to 18 Carmarthen Street. 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 19 months, which places each incident at an approximate point. The 29 schools and 30 stops listed are measured in a straight line from GL1 4SX, not by walking route. Road noise is Defra's strategic noise modelling, averaged across the postcode.
Council tax band
18 Carmarthen Street 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 18 Carmarthen Street, Gloucester, GL1 4SX. Each answer is also embedded as structured data for search engines.

Know this home? Think our valuation is wrong?

Leave a note for other visitors about work done or anything the records miss, and say what you think it's worth. It takes about two minutes.

Keep exploring